CN106915731A - A kind of adjustable application inertia catalyst treatment high concentration SO2Flue gas produces SO3The device of gas - Google Patents
A kind of adjustable application inertia catalyst treatment high concentration SO2Flue gas produces SO3The device of gas Download PDFInfo
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- CN106915731A CN106915731A CN201710245706.8A CN201710245706A CN106915731A CN 106915731 A CN106915731 A CN 106915731A CN 201710245706 A CN201710245706 A CN 201710245706A CN 106915731 A CN106915731 A CN 106915731A
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- Prior art keywords
- inertia
- gas
- converting layer
- flue gas
- catalytic converting
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- 239000003054 catalyst Substances 0.000 title claims abstract description 76
- 230000003197 catalytic effect Effects 0.000 claims abstract description 114
- 239000007789 gas Substances 0.000 claims abstract description 103
- 239000003546 flue gas Substances 0.000 claims abstract description 101
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 72
- 239000002918 waste heat Substances 0.000 claims abstract description 68
- 238000006243 chemical reaction Methods 0.000 claims abstract description 30
- 238000001816 cooling Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims description 29
- 230000000694 effects Effects 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 12
- 230000001706 oxygenating effect Effects 0.000 claims description 12
- 150000003681 vanadium Chemical class 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 229910052720 vanadium Inorganic materials 0.000 claims description 4
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000007739 conversion coating Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000012495 reaction gas Substances 0.000 abstract 1
- RAHZWNYVWXNFOC-UHFFFAOYSA-N sulfur dioxide Inorganic materials O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 61
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Inorganic materials O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 31
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 15
- 239000002253 acid Substances 0.000 description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 9
- 229910052760 oxygen Inorganic materials 0.000 description 9
- 239000001301 oxygen Substances 0.000 description 9
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 229920006395 saturated elastomer Polymers 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- 239000005864 Sulphur Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 238000002407 reforming Methods 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052792 caesium Inorganic materials 0.000 description 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/74—Preparation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Chimneys And Flues (AREA)
Abstract
The invention discloses a kind of adjustable application inertia catalyst treatment high concentration SO2Flue gas produces SO3The device of gas, including SO2Blower fan（1）, described SO2Blower fan（1）By pipeline and heat exchanger（2）It is connected with to containing SO2Concentration is that 13%~32% flue gas is tentatively heated, heat exchanger（2）With the catalytic converting layer of inertia（3）It is connected and send into the catalytic converting layer of inertia with by flue gas（3）Carry out quasi-adiabatic exothermic reaction, and flue gas is reached after design temperature from the catalytic converting layer of inertia（3）It is expelled to waste heat using device（4）Exchanged heat, the low-temperature flue gas after heat exchange cooling are input into traditional activated catalyst layer（5）To produce high concentration SO3Gas.The present invention can concentration for the treatment of be 13%~32% high concentration SO2Gas, and can reduce investment outlay 20%~50%, save and take up an area 30%~50%, utilization rate of waste heat and improve 2~5 times, production intensity is high and clean energy-saving.
Description
Technical field
The present invention relates to contact process technique, specifically one kind can be by high concentration SO2Gas is converted into height
Concentration SO3Gas and production intensity is high, clean energy-saving adjustable application inertia catalyst treatment high concentration SO2Flue gas produces SO3Gas
The device of body.
Background technology
Flue gas Sulphuric acid industry, flue gas used is essentially from troilite, sulphur, non-ferrous metal metallurgy and metallurgy, fire coal, stone
The SO that the industry environmental protecting devices such as change are reclaimed2What gas, especially Air combustion with oxygen enrichment oxygen-enriched air were smelted developing rapidly and reclaiming
The development of method green technology, flue gas SO2Concentration is likely to be breached 13% to 93%, traditional flue gas acid preparing double conversion double absorption, either 3+1
Or 3+2 techniques, or 1+3+1 or 4+1 can only also process SO2Concentration reaches 13% to 18% flue gas, is all difficult to process SO2Concentration reaches
To 13% to 32% flue gas；The many units of sulfuric acid industry and the positive innovative technology method of expert solve this problem, such as：
CN10532220A combined non-steady state SO 2 converters, CN102079511A are applied to sulfur-bearing high-concentration sulfur dioxide cigarette
A kind of conversion of a kind of quasi- isothermal venturi heat energy displacement converter of the acid making system of gas, CN102910592A, CN104084094A
SO2The device and SO of concentration2Conversion system and method for transformation, CN103011092A SO2Non- weighing apparatus state high concentration convert system twice
Technology of sulfuric acid etc.；Above-mentioned technology is required for that using large quantity of air dilution Conventional reformat technique could be applied, thus invests too high
And the energy can not be utilized effectively, therefore economical and efficient energy-conservation ground processes high concentration SO2Gas technology gas production high concentration SO3Gas
Conversing technology is still popular section's topic.
The content of the invention
Can be by high concentration SO it is an object of the invention to provide one kind2Gas is converted into high concentration SO3Gas and production intensity
The adjustable application inertia catalyst treatment high concentration SO of high, clean energy-saving2Flue gas produces SO3The device of gas, the device can be located
Reason contains S02Concentration（Volumetric ratio）In the range of 13%~32% fluctuate flue gas and can process tolerance fluctuate in 40%~100% model
Enclose interior flue gas；To solve SO in flue gas2Concentration it is high and need using large quantity of air dilution could apply Conventional reformat technique skill
The problems such as art too high, energy of involved investment can not be utilized effectively.
The purpose of the present invention is solved by the following technical programs：
A kind of adjustable application inertia catalyst treatment high concentration SO2Flue gas produces SO3The device of gas, including SO2Blower fan, it is special
Levy and be：Described SO2Blower and pipeline is connected with to containing SO with heat exchanger2Concentration be 13%~32% flue gas carry out just
Step heating, heat exchanger is connected with the catalytic converting layer of inertia and carried out with by the flue gas feeding catalytic converting layer of inertia after preliminary heating
Quasi-adiabatic exothermic reaction causes part SO2Gas generates SO3Gas, and flue gas reached after design temperature from the catalytic converting layer of inertia
It is expelled to waste heat using device to be exchanged heat, the low-temperature flue gas after heat exchange cooling are input into traditional activated catalyst layer to produce high concentration
SO3Gas.
The rear side of the catalytic converting layer of inertia is all provided with the waste heat using device with its supporting setting；And the UTILIZATION OF VESIDUAL HEAT IN
Corresponding bypass temperature control valve is all provided with pipeline on front side of device, bypass temperature control valve is used to connect the air inlet pipe of waste heat using device and goes out
Tracheae.
The catalytic converting layer of described inertia includes the catalytic converting layer of the first inertia or including the catalytic converting layer of the first inertia
It is with the catalytic converting layer of the second inertia or lazy including the catalytic converting layer of the first inertia and the catalytic converting layer of the second inertia and the 3rd
The catalytic converting layer of property；When by the SO in the high-temperature flue gas after the catalytic converting layer treatment of the first inertia2When concentration is higher than 11%, then
Need the SO entered during the catalytic converting layer of the second inertia processes the high-temperature flue gas after causing treatment again2Concentration is down to 7%~11%；
When by the SO in the high-temperature flue gas after the catalytic converting layer treatment of the second inertia2When concentration is higher than 11%, then need lazy into the 3rd
Property catalytic converting layer process again, by three times process after high-temperature flue gas in SO2Concentration is down to 7%~11%.
Described waste heat using device includes the first waste heat using device or including the first waste heat using device and the second waste heat profit
With device or including the first waste heat using device and the second waste heat using device and the 3rd waste heat using device, and the first UTILIZATION OF VESIDUAL HEAT IN
Device is located at the catalytic converting layer rear side of the first inertia and is used to exchange heat the high-temperature gas after the catalytic converting layer treatment of the first inertia
Cooling is processed；Second waste heat using device is located on rear side of the catalytic converting layer of the second inertia and is used to at the catalytic converting layer of the second inertia
High-temperature gas after reason carries out heat exchange cooling treatment；The rear side that 3rd waste heat using device is located at the 3rd catalytic converting layer of inertia is used to
Heat exchange cooling treatment is carried out to the high-temperature gas after the catalytic converting layer treatment of the 3rd inertia.
The upper correspondence bypass temperature control valve for setting can be shunted and processed through the catalytic converting layer of inertia on described waste heat using device
The 0%~50% of high-temperature flue gas amount afterwards, to adjust the temperature of the gas reacted again after the catalytic converting layer of inertia is converted.
Oxygenating gas blower fan is additionally provided with described device, oxygenating gas blower fan is by the benefit with oxygenating gas regulating valve
Feed channel is connected with the output end of the catalytic converting layer of output end and/or inertia of waste heat using device；And the SO2Blower fan it is defeated
Go out pipeline to be connected with tonifying Qi pipeline by the flue gas branch pipe with mixing valve.
The low activity catalyst used in the catalytic converting layer of described inertia is can to promote SO2Gas changes into SO3Gas
Containing V2OXFor 2.0%~9.5% vanadium series catalyst or containing Fe2OXFe-series catalyst or above-mentioned vanadium system for 35%~85%
The layering of catalyst and Fe-series catalyst loads in mixture thing.
Described described vanadium series catalyst selects vanadium system diatomite catalyst.
Described preliminary heating-up temperature is 360 DEG C~410 DEG C, and design temperature is 530 DEG C~720 DEG C.
The low activity catalyst that the catalytic converting layer of described inertia is used for vanadium series catalyst when then design temperature be 530 DEG C~
670℃；The low activity catalyst that the catalytic converting layer of described inertia is used for Fe-series catalyst when then design temperature be 620 DEG C~
720℃。
The waste heat using device carries out the low-temperature flue gas temperature after heat exchange cooling and cannot be below heat exchanger to SO2Blower fan is supplied
Flue gas carry out tentatively heating after temperature.
The present invention has the following advantages compared to existing technology：
The present invention passes through the catalytic converting layer of inertia by high concentration SO2Flue gas carries out conversion processing, and sets waste heat using device and carry out
The catalytic converting layer of next inertia is entered back into after heat exchange cooling, SO in flue gas is finally caused2Concentration enters back into biography after being down to 7%~11%
The active catalyst layer of system carries out last treatment, production high concentration SO3Gas, forms the catalytic converting layer of inertia and traditional activated catalyst
The combination reforming unit of layer, can be processed containing S02Flue gas that concentration fluctuates in the range of 13%~32%, while tolerance fluctuation exists
Flue gas in the range of 40%~100%；With traditional contact process compared with scale set, conversion system investment is saved the device
Save 20%~50%, take up an area and save 30%~50%, utilization rate of waste heat and improve 2~5 times, with production intensity is high, clean energy-saving spy
Point, is both adapted to new equipment construction, is also suitable old device upgrading.
Brief description of the drawings
Accompanying drawing 1 is adjustable application inertia catalyst treatment high concentration SO of the invention2Flue gas produces SO3The device of gas is former
Reason figure.
Wherein：1—SO2Blower fan；2-heat exchanger；The catalytic converting layer of 3-inertia；The catalytic converting layer of 31-the first inertia；
The catalytic converting layer of 32-the second inertia；33-the three catalytic converting layer of inertia；4-waste heat using device；41-the first UTILIZATION OF VESIDUAL HEAT IN
Device；42-the second waste heat using device；43-the three waste heat using device；5-traditional activated catalyst layer；6-oxygenating gas blower fan；
7-oxygenating gas regulating valve；8-bypass temperature control valve；9-mixing valve；10-flue gas replenishment valve.
Specific embodiment
The present invention is further illustrated with embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1：A kind of adjustable application inertia catalyst treatment high concentration SO2Flue gas produces SO3The device of gas, bag
Include SO2Blower fan 1, SO2Blower fan 1 is connected with to containing SO by pipeline with heat exchanger 22Concentration be 13%~32% flue gas carry out just
Step heating, heat exchanger 2 to be connected with the catalytic converting layer 3 of inertia and send into the catalytic converting layer 3 of inertia with by the flue gas after preliminary heating
Quasi-adiabatic exothermic reaction is carried out so that part SO2Gas generates SO3Gas, and flue gas reaches and turn from inertia catalyst after design temperature
Change layer 3 to be expelled to waste heat using device 4 and exchanged heat, and waste heat using device 4 carry out the low-temperature flue gas temperature after heat exchange cooling can not
Less than heat exchanger 2 to SO2The flue gas of the supply of blower fan 1 carries out the temperature after tentatively heating, the low-temperature flue gas input after heat exchange cooling
Traditional activated catalyst layer 5 is producing high concentration SO3Gas, and the high concentration SO produced through traditional activated catalyst layer 53Gas
Through heat exchanger 2 to SO2Absorb relieving haperacidity to produce oleum, sulphur after heat exchanger 2 is sent out after the flue gas heat exchange that blower fan 1 is provided
Acid or liquid SO3Product.The low activity catalyst used in the catalytic converting layer 3 of inertia that the present invention is provided is for that can promote SO2Gas
Change into SO3Gas containing V2OXFor 2.0%~9.5% vanadium series catalyst or containing Fe2OXIron system for 35%~85% is catalyzed
Agent or the layering of above-mentioned vanadium series catalyst and Fe-series catalyst load in mixture thing, and the low activity that the catalytic converting layer of inertia is used is touched
The activity of matchmaker is the 30%~95% of the catalyst activity that Conventional reformat bed is used, and vanadium series catalyst is preferentially from addition caesium potassium auxiliary material
Vanadium system diatomite catalyst with reduce initial reaction temperature, improve heat resistance.Other preliminarily heated temperature is 360 DEG C~
410 DEG C and design temperature are 530 DEG C~720 DEG C, when the low activity catalyst that the catalytic converting layer 3 of inertia is used is for vanadium series catalyst
Then design temperature is 530 DEG C~670 DEG C, is then set when the low activity catalyst that the catalytic converting layer 3 of inertia is used is for Fe-series catalyst
Constant temperature degree is 620 DEG C~720 DEG C.
To expand the application effect of the present apparatus, now said apparatus are needed with further refinement, in the catalytic converting layer 3 of inertia
Rear side be all provided with waste heat using device 4 with its supporting setting, and the pipeline of the front side of waste heat using device 4 and be all provided with corresponding side
Circuit temperature-controlling valve 8, bypass temperature control valve 8 is used to connect the air inlet pipe and escaping pipe of waste heat using device 4, and bypass temperature control valve 8 can be shunted
Through 0%~50% of the high-temperature flue gas amount after the catalytic converting layer treatment of inertia, to adjust after the catalytic converting layer 3 of inertia is converted to enter again
The temperature of the gas of row reaction.The other catalytic converting layer 3 of inertia includes the catalytic converting layer 31 of the first inertia or lazy including first
Property the catalytic converting layer 32 of the inertia of catalytic converting layer 31 and second or including the catalytic converting inertia of layer 31 and second of the first inertia touch
The catalytic converting layer 33 of inertia of matchmaker's conversion coating 32 and the 3rd；The structure of the above-mentioned catalytic converting layer 3 of three kinds of inertia is needed according to reality
Situation is set, the SO in the high-temperature flue gas after being processed by the catalytic converting layer 31 of the first inertia2When concentration is higher than 11%, then need
The SO that enter during the catalytic converting layer 32 of the second inertia processes the high-temperature flue gas after causing treatment again2Concentration is down to 7%~11%；
SO in the high-temperature flue gas after being processed by the catalytic converting layer 32 of the second inertia2When concentration is higher than 11%, then need to enter the 3rd
The catalytic converting layer 33 of inertia is processed again, the SO in high-temperature flue gas after three times are processed2Concentration is down to 7%~11%.With
The catalytic converting layer 31 of one inertia, the catalytic converting layer 32 of the second inertia, the catalytic converting layer 33 of the 3rd inertia it is corresponding be：Waste heat profit
With device 4 include the first waste heat using device 41 or including the first waste heat using device 41 and the second waste heat using device 42 or including
First waste heat using device 41 and the second waste heat using device 42 and the 3rd waste heat using device 43, and the first waste heat using device 41 is located at
The rear side of the catalytic converting layer 31 of the first inertia is used to the high-temperature gas after processing the catalytic converting layer 31 of the first inertia and exchanges heat
Cooling is processed；The rear side that second waste heat using device 42 is located at the catalytic converting layer 32 of the second inertia is used to catalytic converting to the second inertia
High-temperature gas after the treatment of layer 32 carries out heat exchange cooling treatment；3rd waste heat using device 43 is located at the catalytic converting layer 33 of the 3rd inertia
Rear side be used to the high-temperature gas after processing the catalytic converting layer 33 of the 3rd inertia and carry out heat exchange cooling treatment.Need explanation
Be, assembly of the invention provides accompanying drawing be that a kind of catalytic converting layer 3 of inertia includes the catalytic converting layer 31 of the first inertia and the
The catalytic converting catalytic converting layer 33 of inertia of layer 32 and the 3rd of two inertia, waste heat using device 4 include the and of the first waste heat using device 41
The structure type of the second waste heat using device 42 and the 3rd waste heat using device 43；Can also there are other multiple structural forms.
It is in addition O in the flue gas for causing to enter subsequent treatment2/SO2Mol ratio be 0.5~1.3, be additionally provided with a device
Oxygenating gas blower fan 6, oxygenating gas blower fan 6 is defeated with waste heat using device 4 by the tonifying Qi pipeline with oxygenating gas regulating valve 7
The output end for going out end and/or the catalytic converting layer 3 of inertia is connected；And SO simultaneously2The output channel of blower fan 1 is by with mixing valve
9 flue gas branch pipe is connected with tonifying Qi pipeline.Other SO2The gas outlet of blower fan also can be set the pipe with flue gas replenishment valve 10
Road, the pipeline is connected with the outlet of heat exchanger 2.
Adjustable application inertia catalyst treatment high concentration SO of the invention2Flue gas produces SO3It is first when the device of gas is used
First to containing SO2Concentration is that 13%~32% flue gas carries out tentatively being heated to 360 DEG C~410 DEG C；Flue gas after preliminary heating is sent
Entering the catalytic converting layer 3 of inertia carries out quasi-adiabatic exothermic reaction so that part SO2Gas generates SO3Gas, flue gas reaches design temperature
Discharged from the catalytic converting layer 3 of inertia afterwards；Measure SO in the high-temperature flue gas of discharge2Concentration and will discharge high-temperature flue gas through waste heat profit
Exchanged heat with device 4；The SO in measuring through the high-temperature flue gas after the catalytic converting treatment of layer 3 of inertia2When concentration is higher than 11%, then
Quasi-adiabatic exothermic reaction is carried out again so that part SO into the new catalytic converting layer 3 of inertia2Gas generates SO3Gas and heat exchange
Cooling；The SO into the high-temperature flue gas measured after being processed through the catalytic converting layer 3 of inertia2When concentration is 7%~11%, then after exchanging heat
Low-temperature flue gas（Temperature range is 390 DEG C~480 DEG C）Traditional activated catalyst layer 5 is input into produce high concentration SO3Gas；And it is high
Concentration SO3Gas contains SO for 2 pairs through heat exchanger2Concentration be 13%~32% flue gas heat exchange after send out again carry out absorb relieving haperacidity to produce
Oleum, sulfuric acid or liquid SO3Product.Simultaneously in order that obtaining O in the flue gas that will carry out subsequent treatment2/SO2Mol ratio
It is 0.5~1.3, has processed and needed the SO for processing again2After flue gas is through heat exchange cooling, as desired by oxygenating gas wind
Machine 6 fills into a kind of through mending in one kind or dry air and dry oxygen rich gas in dry air and dry oxygen rich gas
SO after the offer of carrier of oxygen blower fan 6 with unconverted treatment2Flue gas is filled at wait continuation after the conducting of mixing valve 9 mixes
In the flue gas of reason；It should be noted that oxygenating gas regulating valve 7 be arranged on connection waste heat using device 4 pipeline on or directly
It is arranged on the pipeline of the connection catalytic converting layer 3 of inertia, then the above-mentioned gas for filling into can be adjusted by corresponding oxygenating gas
Valve 7 is controlled to determine whether to fill into and the amount of filling into.
Device of the invention will contain high concentration SO2Flue gas is defeated after loading the catalytic converting layer 3 of the inertia of inertia catalyst and reacting
The gas for going out through after the cooling that heat exchange, fill into as needed partially dried air or dry oxygen rich gas or dry air and
One kind and SO in dry oxygen rich gas2The mixed gas of process gas, with O in the flue gas for causing to carry out subsequent treatment2/SO2
Mol ratio be 0.5~1.3, make containing SO2Flue gas conversion reaction exotherm, 530~720 DEG C of catalyst safe operating range with
Interior, 530~670 DEG C of vanadium series catalyst heat resisting temperature, Fe-series catalyst heat resisting temperature is 620~720 DEG C, it is possible to use two kinds are urged
The temperature-resistance characteristic of agent carries out layering collocation filling.When by one layer, two layers or three layers inertia catalytic converting layer 3 conversion reaction
Afterwards, SO in flue gas2Concentration at 7%~11%, after fully heat exchange cooling, into traditional activated catalyst layer 5 is interior located by flue gas
Manage to produce high concentration SO3Gas, the number of plies for forming the catalytic converting layer 3 of inertia adds the number of plies of traditional activated catalyst layer 5：3+1、2+
2nd, 1+3 or a kind of reforming unit of other combinations, produce high concentration SO3Gas.High concentration SO3Gas can be used for making
Take the products such as sulfuric acid, oleum or liquid sulphur trioxide.
Device of the invention is further described below by specific embodiment.
Embodiment one
Certain power plant's environment protection desulphurization reclaims SO2Gas is used for extracting sulfuric acid, and the gas ingredients of its flue gas are after drying：SO2 —
30.69%、O2—18.47%、N2—49.36%、CO2- 1.48%, total tolerance about 90000Nm3/hr.Flue gas is through SO2Blower fan 1 boosts
Afterwards, after being heated up to 390 DEG C through heat exchanger 2 enter the catalytic converting layer 31 of the first inertia, conversion ratio about 35%, 660 DEG C of air outlet temperature and
Containing SO2Concentration is 21.43%；Exchanged heat through the first waste heat using device 41（2.5MPa saturated vapors 17.7t/hr is pressed in product）Cool to
Enter the catalytic converting layer 32 of the second inertia after 390 DEG C, react total conversion about 60%, 580 DEG C of air outlet temperature and containing SO2Concentration is
13.75%；Exchanged heat through the second waste heat using device 42（2.5MPa saturated vapors 12.6t/hr is pressed in product）Enter after cooling to 390 DEG C
The catalytic converting layer 33 of 3rd inertia, reacts total conversion about 80%, 535 DEG C of air outlet temperature and containing SO2Concentration is 7.12%；Through the 3rd
Waste heat using device 43 exchanges heat (2.5MPa saturated vapor 9.3t/hr are pressed in product) after cooling to 390 DEG C and enters into traditional activated catalyst
Reacted in layer 5, reacted total conversion about 90%, 498 DEG C of air outlet temperature and containing SO2Concentration is 3.6%, and discharge gas is through heat exchanger
2 couples of SO2Being sent out after the heat exchange heating of the outlet of blower fan 1 carries out absorption relieving haperacidity, to produce fuming acid, bright sulfur acid or liquid SO3Product.
Embodiment two
Certain acid production with sulphur factory produces SO using oxygen-enriched combusting2Gas is used for extracting sulfuric acid, and its gas ingredients is after burning：SO2 —
20.78%、O2—17.39%、N2- 61.83%, total tolerance about 115930Nm3/hr.Flue gas is through SO2After blower fan 1 boosts, through heat exchange
Device 2 enters the catalytic converting layer 31 of the first inertia, conversion ratio about 35%, 587 DEG C of air outlet temperature and containing SO after being heated up to 390 DEG C2Concentration
It is 14.28%；Exchanged heat through the first waste heat using device 41（2.5MPa saturated vapors 15.56t/hr is pressed in product）Cool to 420 DEG C it is laggard
Enter the catalytic converting layer 32 of the second inertia, react total conversion about 65%, 585 DEG C of air outlet temperature and containing SO2Concentration is 7.95%；Through
Two waste heat using devices 42 exchange heat（2.5MPa saturated vapors 13.32t/hr is pressed in product）Enter traditional activated touching after cooling to 390 DEG C
The ground floor reaction of matchmaker's layer 5, reacts total conversion about 90%, 530 DEG C of air outlet temperature and containing SO2Concentration is 2.34%, discharge gas warp
The second layer that corresponding heat exchanger is cooled to after 420 DEG C into traditional activated catalyst layer 5 reacts, and reacts total conversion about 97%, goes out
455 DEG C of temperature degree and containing SO2Concentration is 0.71%, and discharge gas is through heat exchanger 2 to SO2Being sent out after the heat exchange heating of the outlet of blower fan 1 is carried out
Relieving haperacidity is absorbed, to produce fuming acid, bright sulfur acid or liquid SO3Product.
Embodiment three
Certain ore deposit copper smelting plant produces SO using oxygen-enriched air smelting and blowing2Gas is used for extracting sulfuric acid, and its gas ingredients is after burning：
SO2—15.26%、O2—13.04%、N2—69.64%、CO2- 2.06%, total tolerance about 154800Nm3/hr.Flue gas is through SO2Blower fan
After 1 boosting, the catalytic converting layer 31 of the first inertia, conversion ratio about 47%, air outlet temperature are entered after being heated up to 390 DEG C through heat exchanger 2
590 DEG C and containing SO2Concentration is 8.55%；Exchanged heat through the first waste heat using device 41（2.5MPa saturated vapors 17.46t/hr is pressed in product）
The ground floor reaction that traditional activated catalyst layer 5 is entered into after 390 DEG C is cooled to, total conversion about 85%, air outlet temperature 550 is reacted
DEG C and containing SO2Concentration is 2.5%, and discharge gas is cooled to after 420 DEG C the into traditional activated catalyst layer 5 through corresponding heat exchanger
Two layers of reaction, react total conversion about 97%, 470 DEG C of air outlet temperature and containing SO2Concentration is 0.51%, and discharge gas is through 2 pairs, heat exchanger
SO2Being sent out after the heat exchange heating of the outlet of blower fan 1 carries out absorption relieving haperacidity, to produce fuming acid, bright sulfur acid or liquid SO3Product.
The present invention passes through the catalytic converting layer 3 of inertia by high concentration SO2Flue gas carries out conversion processing, and sets waste heat using device
The catalytic converting layer of next inertia is entered back into after carrying out heat exchange cooling, SO in flue gas is finally caused2Concentration is entered again after being down to 7%~11%
Entering traditional activated catalyst layer 5 carries out last treatment, production high concentration SO3Gas, forms the catalytic converting layer 3 of inertia and tradition is lived
The combination reforming unit of property catalyst layer 5, can be processed containing S02Flue gas that concentration fluctuates in the range of 13%~32%, while tolerance
The flue gas fluctuated in the range of 40%~100%；The device with traditional contact process compared with scale set, conversion system
Saving 20%~50% is invested, is taken up an area and is saved 2~5 times of 30%~50%, utilization rate of waste heat raising, intensity is high, clean section with producing
The characteristics of energy, both it is adapted to new equipment construction, was also suitable old device upgrading.
Above example is only explanation technological thought of the invention, it is impossible to limit protection scope of the present invention with this, every
According to technological thought proposed by the present invention, any change done on the basis of technical scheme each falls within the scope of the present invention
Within；The technology that the present invention is not directed to can be realized by prior art.
Claims (11)
1. a kind of adjustable application inertia catalyst processes high concentration SO2Flue gas produces SO3The device of gas, including SO2Blower fan（1）,
It is characterized in that：Described SO2Blower fan（1）By pipeline and heat exchanger（2）It is connected with to containing SO2Concentration is 13%~32%
Flue gas is tentatively heated, heat exchanger（2）With the catalytic converting layer of inertia（3）It is connected so that the flue gas feeding after preliminary heating is lazy
The catalytic converting layer of property（3）Quasi-adiabatic exothermic reaction is carried out so that part SO2Gas generates SO3Gas, and flue gas reaches design temperature
Afterwards from the catalytic converting layer of inertia（3）It is expelled to waste heat using device（4）Exchanged heat, the low-temperature flue gas input tradition after heat exchange cooling
Active catalyst layer（5）To produce high concentration SO3Gas.
2. adjustable application inertia catalyst according to claim 1 processes high concentration SO2Flue gas produces SO3The device of gas,
It is characterized in that：The catalytic converting layer of inertia（3）Rear side be all provided with waste heat using device with its supporting setting（4）；And institute
State waste heat using device（4）Corresponding bypass temperature control valve is all provided with the pipeline of front side（8）, bypass temperature control valve（8）It is used to connect remaining
Heat utilization device（4）Air inlet pipe and escaping pipe.
3. adjustable application inertia catalyst according to claim 1 and 2 processes high concentration SO2Flue gas produces SO3The dress of gas
Put, it is characterised in that：The catalytic converting layer of described inertia（3）Including the catalytic converting layer of the first inertia（31）Or including first
The catalytic converting layer of inertia（31）With the catalytic converting layer of the second inertia（32）Or including the catalytic converting layer of the first inertia（31）With
The catalytic converting layer of two inertia（32）And the 3rd catalytic converting layer of inertia（33）；When by the catalytic converting layer of the first inertia（31）Place
The SO in high-temperature flue gas after reason2When concentration is higher than 11%, then need to enter the catalytic converting layer of the second inertia（32）Treatment again makes
The SO in high-temperature flue gas after must processing2Concentration is down to 7%~11%；When by the catalytic converting layer of the second inertia（32）After treatment
SO in high-temperature flue gas2When concentration is higher than 11%, then need to enter the 3rd catalytic converting layer of inertia（33）Process again, by three
The SO in high-temperature flue gas after secondary treatment2Concentration is down to 7%~11%.
4. adjustable application inertia catalyst according to claim 3 processes high concentration SO2Flue gas produces SO3The device of gas,
It is characterized in that：Described waste heat using device（4）Including the first waste heat using device（41）Or including the first waste heat using device
（41）With the second waste heat using device（42）Or including the first waste heat using device（41）With the second waste heat using device（42）And the
Three waste heat using devices（43）, and the first waste heat using device（41）Positioned at the catalytic converting layer of the first inertia（31）Rear side be used to
The catalytic converting layer of one inertia（31）High-temperature gas after treatment carries out heat exchange cooling treatment；Second waste heat using device（42）Positioned at
The catalytic converting layer of two inertia（32）Rear side be used to the catalytic converting layer of the second inertia（32）High-temperature gas after treatment is changed
The treatment of heat drop temperature；3rd waste heat using device（43）Positioned at the 3rd catalytic converting layer of inertia（33）Rear side be used to the 3rd inertia touch
Matchmaker's conversion coating（33）High-temperature gas after treatment carries out heat exchange cooling treatment.
5. adjustable application inertia catalyst according to claim 1 and 2 processes high concentration SO2Flue gas produces SO3The dress of gas
Put, it is characterised in that：Described waste heat using device（4）The correspondence bypass temperature control valve of upper setting（8）Can shunt through inertia catalyst
Conversion coating treatment after high-temperature flue gas amount 0%~50%, to adjust the catalytic converting layer of inertia（3）Reacted again after conversion
The temperature of gas.
6. adjustable application inertia catalyst according to claim 1 processes high concentration SO2Flue gas produces SO3The device of gas,
It is characterized in that：Oxygenating gas blower fan is additionally provided with described device（6）, oxygenating gas blower fan（6）By with oxygenating gas
Regulating valve（7）Tonifying Qi pipeline and waste heat using device（4）Output end and/or the catalytic converting layer of inertia（3）Output end be connected
It is logical；And the SO2Blower fan（1）Output channel by with mixing valve（9）Flue gas branch pipe be connected with tonifying Qi pipeline.
7. adjustable application inertia catalyst according to claim 1 processes high concentration SO2Flue gas produces SO3The device of gas,
It is characterized in that：The catalytic converting layer of described inertia（3）The middle low activity catalyst for using is can to promote SO2Gas changes into SO3
Gas containing V2OXFor 2.0%~9.5% vanadium series catalyst or containing Fe2OXFor 35%~85% Fe-series catalyst or on
The layering for stating vanadium series catalyst and Fe-series catalyst loads in mixture thing.
8. adjustable application inertia catalyst according to claim 7 processes high concentration SO2Flue gas produces SO3The device of gas,
It is characterized in that：Described vanadium series catalyst selects vanadium system diatomite catalyst.
9. adjustable application inertia catalyst according to claim 1 processes high concentration SO2Flue gas produces SO3The device of gas,
It is characterized in that：Described preliminary heating-up temperature is 360 DEG C~410 DEG C, and design temperature is 530 DEG C~720 DEG C.
10. according to any described adjustable application inertia catalyst treatment high concentration SO of claim 1,7,92Flue gas produces SO3Gas
The device of body, it is characterised in that：The catalytic converting layer of described inertia（3）Then set when the low activity catalyst for using is for vanadium series catalyst
Constant temperature degree is 530 DEG C~670 DEG C；The catalytic converting layer of described inertia（3）The low activity catalyst for using for Fe-series catalyst when then
Design temperature is 620 DEG C~720 DEG C.
11. adjustable application inertia catalyst treatment high concentration SO according to claim 12Flue gas produces SO3The dress of gas
Put, it is characterised in that：The waste heat using device（4）Carry out the low-temperature flue gas temperature after heat exchange cooling and cannot be below heat exchanger（2）
To SO2Blower fan（1）The flue gas of supply carries out the temperature after tentatively heating.
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