CN209287018U - Calcination plant steam exhaust system - Google Patents
Calcination plant steam exhaust system Download PDFInfo
- Publication number
- CN209287018U CN209287018U CN201821463833.1U CN201821463833U CN209287018U CN 209287018 U CN209287018 U CN 209287018U CN 201821463833 U CN201821463833 U CN 201821463833U CN 209287018 U CN209287018 U CN 209287018U
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- spray
- pipe
- air
- shell
- baffle plate
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- 238000001354 calcination Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 128
- 239000007921 spray Substances 0.000 claims abstract description 84
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 9
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 8
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 4
- 239000000843 powder Substances 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 35
- 238000011144 upstream manufacturing Methods 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 2
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 80
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 24
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 18
- 235000011116 calcium hydroxide Nutrition 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model discloses a kind of calcination plant steam exhaust systems, including exhaust pipe, exhaust pipe series connection is equipped with spray equipment and electrostatic tar collecting apparatus, it further include having circulated sprinkling mechanism, circulated sprinkling mechanism includes Ladder Overflow pond, spray water inlet pipe, the spray equipment and spray outlet pipe；Spray equipment connects the spray water inlet pipe and spray outlet pipe；It sprays water inlet pipe and is equipped with water circulating pump；The end of spray outlet pipe is located at the top of Ladder Overflow pond water inlet end；The buffer bin for being loaded with calcium hydroxide powder is equipped at the top of Ladder Overflow pond, material stock lower box part is connected with feeder pipe, and feeder pipe is equipped with baiting valve.It is absorbed by baffling spray and alkaline water, substantially increases the efficiency for absorbing pollutant；In the utility model baffling access is surrounded by ponding, overhead gage and lower baffle plate together, neither influences draining, in turn simplify the structure of baffling access.
Description
Technical field
The utility model relates to industrial gas emission technical fields.
Background technique
Contain sulfur dioxide, nitrogen oxides and tar in the exhaust gas of our factory calcination plant discharge, and temperature is higher, needs
It purifies and is discharged into atmosphere after temperature adjustment.Our factory use the sulfur dioxide made a return journey in removing exhaust gas using the technical measures that water spray absorbs with
Nitrogen oxides, but removal effect is poor, and exhaust gas exhaust temperature cannot be guaranteed.Exhaust gas exhaust temperature is too low, haze easy to form；
Exhaust gas exhaust temperature is excessively high, and may bring thermal pollution.
Utility model content
The purpose of this utility model is to provide a kind of calcination plant steam exhaust systems that exhaust-gas treatment effect is good, can
Efficiently remove the pollutants such as sulfur dioxide and the nitrogen oxides in water removal.
To achieve the above object, the calcination plant steam exhaust system of the utility model includes exhaust pipe, with fluid
Flow direction is downstream direction, and exhaust pipe is equipped with spray equipment and electrostatic tar collecting apparatus, exhaust gas by upstream toward downstream series connection
The end of delivery pipe is connected with the chimney for exhaust gas to be discharged into atmosphere, and the exhaust pipe of spray equipment upstream side is equipped with row
Gas blower；
It further include having circulated sprinkling mechanism, circulated sprinkling mechanism includes Ladder Overflow pond, spray water inlet pipe, spray dress
Set and spray outlet pipe；Spray equipment connects the spray water inlet pipe and spray outlet pipe；
Ladder Overflow pond top is its water inlet end and its bottom is equipped with water chamber；Spray water inlet pipe one end is connected with water chamber
The logical and other end is connected with the case top of spray equipment, and spray water inlet pipe is equipped with water circulating pump；Spray the end of outlet pipe
End is equipped with the top for being open and being located at Ladder Overflow pond water inlet end；It is equipped at the top of Ladder Overflow pond and is loaded with calcium hydroxide powder
Buffer bin, material stock lower box part are connected with feeder pipe, and towards Ladder Overflow pond below, feeder pipe is equipped with for the lower end of feeder pipe
Baiting valve.
Spray equipment includes shell, and shell bottom right side is equipped with overflow water outlet baffle plate, overflow water outlet baffle plate and its on the left of
Shell surrounds ponding chamber, and overflow water outlet baffle plate and the shell on the right side of it surround spill cavity, spill cavity and the spray outlet pipe phase
Connection；Alternately it is equipped with lower baffle plate and overhead gage in shell above spill cavity in left-right direction, overhead gage and lower baffle plate are and shell
Body sidewall is fixedly connected, and overhead gage lower end is higher than overflow water outlet baffle plate top and overhead gage upper end is connected with housing top wall；
Lower baffle plate upper end is lower than housing top wall and its lower end is higher than shell bottom wall, and lower baffle plate lower end is lower than overflow water outlet baffle plate
Top；
It is logical that the ponding water surface of shell and spill cavity between lower baffle plate, overhead gage, overhead gage and lower baffle plate surrounds baffling
Road；Inlet chamber is surrounded between the lower baffle plate and housing left side wall of leftmost, is enclosed between the overhead gage and housing right side wall of rightmost
At outlet chamber；Inlet chamber bottom is connected with the exhaust pipe of spray equipment upstream side and junction is discharged higher than overflow
Baffle, outlet chamber top are connected with the exhaust pipe in spray equipment downstream side；
Case top is equipped with horizontally disposed spray tube in left-right direction, and spray tube is higher than each lower baffle plate and passes through each upper gear
Plate；Spray tube in inlet chamber, outlet chamber and baffling access is equipped with several nozzles separately down；Spray water inlet pipe protrudes into shell
And it is connected with spray tube.
The water chamber bottom is equipped with hollow air-spreading disk, air-spreading disk is horizontally disposed and its upper surface be evenly distributed with it is several
Qi-emitting hole；Air-spreading disk is connected with stirring gas circuit, and stirring gas circuit is connected with air pump, is equipped with intake valve at air pump air inlet.
Thermoregulative mechanism is equipped at the exhaust pipe of the electrostatic tar collecting apparatus downstream side；The exhaust gas of chimney entrance discharges
Pipe is equipped with temperature sensor and/or thermometer, and the exhaust pipe of electrostatic tar collecting apparatus downstream side is equipped with shut-off valve；
Thermoregulative mechanism includes shell and tube heat exchanger, shell and tube heat exchanger be connected with temperature adjustment air inlet path, temperature adjustment exhaust line,
Gas inlet road and exhaust gas return-air road；Shell and tube heat exchanger have tube side and shell side, the two of the tube side of shell and tube heat exchanger
End is separately connected the temperature adjustment air inlet path and temperature adjustment exhaust line, and the both ends of the shell side of shell and tube heat exchanger are separately connected described useless
Gas air inlet path and exhaust gas return-air road；Temperature adjustment exhaust line is connected with atmosphere or external heat recovery apparatus；
Temperature adjustment air inlet path is connected by three-way connection with the air pump, described in the first interface connection of the three-way connection
The gas outlet of air pump, the second interface of three-way connection connect the temperature adjustment air inlet path, described in the third interface connection of three-way connection
Gas circuit is stirred, the air inlet of air pump is connected to external high-temperature vapour pipe or connection atmosphere；Temperature adjustment air inlet path is equipped with heat exchange wind
Valve, blender gas road are equipped with stirring air-valve；Gas inlet road is equipped with outlet valve, and exhaust gas return-air road is equipped with air returning valve.
Chimney top is equipped with shielding cap.
Be equipped with pH value sensor in spill cavity, the shut-off valve, outlet valve, air returning valve, heat exchange air-valve, stirring air-valve and under
Expect that valve is solenoid valve；
PH value sensor, air exhauster, temperature sensor, air pump, shut-off valve, outlet valve, air returning valve, changes water circulating pump
Hot-blast valve, stirring air-valve and baiting valve are connected with an electric control gear.
It is absorbed by baffling spray and alkaline water, the utility model substantially increases sulfur dioxide absorption and nitrogen oxides
Efficiency；Lower baffle plate lower end is lower than overflow water outlet baffle plate, can use ponding and forms sealing, by ponding, overhead gage and lower baffle plate
Baffling access is surrounded together, neither the discharge of influence ponding, in turn simplify the structure of setting baffling access.The setting of air-spreading disk can
Water body is stirred by bubble floating, so that the pH value of water body is more uniform, alkali solute dissolves more abundant.This reality
Different temperature adjustment operations can be carried out according to different adjusting targets (haze or anti-thermal pollution) with novel, it can be flexibly square
Just adjusting target is realized.
The utility model both can opening or closing by each component of staff's manual control, carry out manual control,
Can by each sensor of electric control gear automatic collection signal and automatically control opening or closing for each component, controlled automatically
System.
Since the aqueous solution of sulfur dioxide and nitrogen oxides is in acidity, alkaline water, phase are used in the utility model
It, can be before equipment volume be constant compared with the efficiency that can greatly improve water sulfur dioxide absorption and nitrogen oxides using neutral water
It puts, substantially more absorbs the sulfur dioxide and nitrogen oxides in exhaust gas, calcination plant is made to be discharged into the exhaust gas of atmosphere to environment
Pollution it is smaller.
For alkaline solution, pH value is all safe (short-time contact) to human body below 9.In the utility model
The pH value of water is controlled in 8.0-8.7, on the one hand ensure that water is in alkalinity, to improve shower water sulfur dioxide absorption and nitrogen
The efficiency of oxide, on the other hand considers safe clearance, it is contemplated that launches calcium hydroxide and measures the difference in pH value place, i.e.,
Just the pH value that the water PH value of calcium hydroxide release position is spaced a period of time measurement point water body after reaching 8.7 just reaches 8.7, from
And launched some calcium hydroxides in this interval period more, the pH value of water body entirety is not more than 9, to guarantee to recycle
Safety of the water to human body, prevents personnel from surprisingly contacting recirculated water and causing personal injury.
Recirculated water can be adjusted and is continuously maintained in compared with alkalescent by the steam discharge technology of the utility model, and pass through gas
Body stirring operation makes alkali solute more uniformly be dissolved in the water, and improves the efficiency that shower water absorbs oxious component in exhaust gas, both
Energy manual control, and can be automatically controled, and prevent sensor error bring in long-term work from controlling Problem of Failure, it prevents from following
Ring water is very few.
Possible contradiction between the various operations of reasonable coordination in the utility model, in the operation item of the utility model setting
Under part, Gas Stirring operation can enable air pump by air with to prevent the temperature adjustment operation under thermal pollution target from carrying out simultaneously
It is sent into air-spreading disk and shell and tube heat exchanger simultaneously, while carrying out Gas Stirring operation and temperature adjustment operation.The utility model simultaneously
Gas Stirring operation is prevented again and to prevent haze as the temperature adjustment operation of target while carry out, reduces and external high-temperature is steamed
The dependence of gas source.Fluctuation range stops gas less than 0.5 and when the duration is greater than 1 minute above and below the pH value of the water in water chamber
Body stirring, by stopping air pump because air-spreading disk gas distribution does work, can be dropped when alkali solute dissolves more uniform in water
Low energy consumption.
When exhaust gas temperature is more than or equal to 90 degree, intake valve and air pump are closed to stop temperature adjustment operation；Work as exhaust gas temperature
When less than 80 degree, intake valve and air pump are opened to be again turned on temperature adjustment operation；Such operation both can guarantee haze target
Realization, and prevent system energy consumption excessively high.
When the difference of exhaust gas temperature and atmospheric temperature is less than 3 DEG C, intake valve and air pump are closed to stop temperature adjustment operation；
When the difference of exhaust gas temperature and atmospheric temperature is greater than 6 DEG C, intake valve and air pump are opened to be again turned on temperature adjustment operation.In this way
Operation, not only can guarantee the realization of solar heat protection pollution target, and but also prevented system energy consumption excessively high.
Human body can short-time contact without the upper limit of the pH value of harm be 9.0, therefore the utility model passes through control
Baiting valve can guarantee the regulation that pH value carries out the safety in operational process.
The temperature for opening air pump and the temperature for closing air pump have certain difference, can prevent from frequenting switch on and closing gas
Pump, extend air pump and intake valve service life) calcination plant stop discharge steam when, stop calcination plant steam exhaust system
Operation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of spray equipment；
Fig. 3 is the structural schematic diagram of the water chamber in Ladder Overflow pond；
Fig. 4 is the electric control schematic diagram of the utility model；
Fig. 5 is the overlooking structure diagram of air-spreading disk.
Specific embodiment
Direction shown in arrow is the flow direction of fluid at this in Fig. 1.
As shown in Figures 1 to 5, the calcination plant steam exhaust system of the utility model includes exhaust pipe 1, with fluid
Flow direction is downstream direction, and exhaust pipe 1 is equipped with spray equipment 2 and electrostatic tar collecting apparatus 3 by upstream toward downstream series connection, is given up
The end of gas delivery pipe 1 is connected with the chimney 4 for exhaust gas to be discharged into atmosphere, on the exhaust pipe 1 of 2 upstream side of spray equipment
Equipped with air exhauster 5；
It further include having circulated sprinkling mechanism, circulated sprinkling mechanism includes Ladder Overflow pond 6, spray water inlet pipe 7, the spray
Device 2 and spray outlet pipe 8；Spray equipment 2 connects the spray water inlet pipe 7 and spray outlet pipe 8；
6 top of Ladder Overflow pond is its water inlet end and its bottom is equipped with water chamber 9；Spray 7 one end of water inlet pipe and water chamber 9
It is connected and the other end is connected with the case top of spray equipment 2, spray water inlet pipe 7 is equipped with water circulating pump 10；It sprays out
The end of water pipe 8 is equipped with the top for being open and being located at the water inlet end in Ladder Overflow pond 6；It is equipped with and is loaded at the top of Ladder Overflow pond 6
The buffer bin 11 of calcium hydroxide powder, 11 lower part of buffer bin are connected with feeder pipe 12, and the lower end of feeder pipe 12 is towards below
Ladder Overflow pond 6, feeder pipe 12 are equipped with baiting valve 13.
Spray equipment 2 include shell 14,14 bottom right side of shell be equipped with overflow water outlet baffle plate 15, overflow water outlet baffle plate 15 with
Shell 14 on the left of it surrounds ponding chamber 16, and overflow water outlet baffle plate 15 and the shell 14 on the right side of it surround spill cavity 17, spill cavity
17 are connected with the spray outlet pipe 8；It is alternately equipped with 19 He of lower baffle plate in left-right direction in the shell 14 of 17 top of spill cavity
Overhead gage 18, overhead gage 18 and lower baffle plate 19 are vertically arranged and be fixedly connected with 14 side wall of shell, and 18 lower end of overhead gage is high
In 15 top of overflow water outlet baffle plate and 18 upper end of overhead gage is connected with 14 roof of shell；
19 upper end of lower baffle plate is lower than 14 roof of shell and its lower end is higher than 14 bottom wall of shell, and 19 lower end of lower baffle plate is lower than overflow
15 top of water outlet baffle plate；In this manner it is ensured that lower baffle plate 19 is inserted into 17 liquid level of spill cavity hereinafter, preventing gas by under lower baffle plate 19
End and the gap between 14 bottom wall of shell or liquid level are directly flowed out to the right, guarantee the effect of baffling spray.
The ponding water of shell 14 and spill cavity 17 between lower baffle plate 19, overhead gage 18, overhead gage 18 and lower baffle plate 19
Face surrounds baffling access 20；Inlet chamber 21, the upper gear of rightmost are surrounded between 14 left side wall of lower baffle plate 19 and shell of leftmost
Outlet chamber 22 is surrounded between 14 right side wall of plate 18 and shell；The exhaust gas of 21 bottom of inlet chamber and 2 upstream side of spray equipment is arranged
Put that pipe 1 is connected and junction is higher than overflow water outlet baffle plate 15, the exhaust gas at outlet chamber 22 top and 2 downstream side of spray equipment
Delivery pipe 1 is connected；
Horizontally disposed spray tube 23 in left-right direction is equipped at the top of shell 14, spray tube 23 is higher than each lower baffle plate 19 and wears
Cross each overhead gage 18；Spray tube 23 in inlet chamber 21, outlet chamber 22 and baffling access 20 is equipped with several nozzles separately down
24；Spray water inlet pipe 7 protrudes into shell 14 and is connected with spray tube 23.
9 bottom of water chamber is equipped with hollow air-spreading disk 25, and air-spreading disk 25 is horizontally disposed and its upper surface is uniformly distributed
There are several qi-emitting holes 26；Air-spreading disk 25 is connected with stirring gas circuit 27, and stirring gas circuit 27 is connected with air pump 28, at 28 air inlet of air pump
Equipped with intake valve 29.
Thermoregulative mechanism is equipped at the exhaust pipe 1 of 3 downstream side of electrostatic tar collecting apparatus；The exhaust gas of 4 entrance of chimney
Delivery pipe 1 is equipped with temperature sensor 30 and/or thermometer 31, and the exhaust pipe 1 of 3 downstream side of electrostatic tar collecting apparatus is equipped with
Shut-off valve 32；
Thermoregulative mechanism includes shell and tube heat exchanger 33, and shell and tube heat exchanger 33 is connected with temperature adjustment air inlet path 34, temperature adjustment
Exhaust line 35, gas inlet road 36 and exhaust gas return-air road 37；Shell and tube heat exchanger 33 has tube side and shell side, and shell-tube type heat is handed over
The both ends of the tube side of parallel operation 33 are separately connected the temperature adjustment air inlet path 34 and temperature adjustment exhaust line 35, the shell of shell and tube heat exchanger 33
The both ends of journey are separately connected the gas inlet road 36 and exhaust gas return-air road 37；Temperature adjustment exhaust line 35 and atmosphere or external heat
Recyclable device is connected.
Temperature adjustment air inlet path 34 is connected by three-way connection 38 with the air pump 28, the first interface of the three-way connection 38
The gas outlet of the 39 connection air pumps 28, the second interface 40 of three-way connection 38 connect the temperature adjustment air inlet path 34, three-way connection
38 third interface 41 connects the stirring gas circuit 27, and it is big that the air inlet of air pump 28 is connected to external high-temperature vapour pipe or connection
Gas；Temperature adjustment air inlet path 34 is equipped with heat exchange air-valve 42, and stirring gas circuit 27 is equipped with stirring air-valve 43；Gas inlet road 36 is equipped with
Outlet valve 44, exhaust gas return-air road 37 are equipped with air returning valve 45.
4 top of chimney is equipped with shielding cap 46.
Be equipped with pH value sensor 47 in spill cavity 17, the shut-off valve 32, outlet valve 44, air returning valve 45, heat exchange air-valve 42,
It stirs air-valve 43 and baiting valve 13 is solenoid valve；
PH value sensor 47, water circulating pump 10, air exhauster 5, temperature sensor 30, air pump 28, shut-off valve 32, outlet valve
44, air returning valve 45, heat exchange air-valve 42, stirring air-valve 43 and baiting valve 13 are connected with an electric control gear 48.Electric control gear 48
It is preferred that using 51 single-chip microcontrollers.
The invention also discloses the steam discharge technologies of a kind of nitrogen-containing oxide and tar, pass through above-mentioned calcination plant
Steam exhaust system carries out；The steam discharge technology of nitrogen-containing oxide and tar is:
Outlet valve 44, air returning valve 45, heat exchange air-valve 42, stirring air-valve 43, intake valve 29 and air pump 28 are closed, cut-off is opened
Valve 32, water circulating pump 10 and air exhauster 5, water circulating pump 10 open water cycle process, and water chamber 9 is in full water state at this time；
It opens baiting valve 13 and discharges calcium hydroxide into the water in Ladder Overflow pond 6 to form alkaline water in Ladder Overflow pond 6, work as rank
When pH value in terraced 6 water of run-off is more than or equal to 8.7, baiting valve 13 is closed；
Water circulating pump 10 extracts the water in Ladder Overflow pond 6 out, the spray being sent into spray equipment 2 by spray water inlet pipe 7
Shower pipe 23, and inlet chamber 21, outlet chamber 22 and baffling access 20 are sprayed into downwards by nozzle 24, and from top to bottom fall into ponding chamber
16；After water level in ponding chamber 16 reaches the height on 15 top of overflow water outlet baffle plate, water overflow enters spill cavity 17, passes through spray
Outlet pipe 8 passes back into Ladder Overflow pond 6；
The exhaust gas (steam) that calcination plant generates is sent into spray equipment 2 by exhaust pipe 1 and entered by air exhauster 5
Inlet chamber 21, exhaust gas baffling enter outlet chamber 22 after passing through baffling access 20, then enter chimney 4 side by side along exhaust pipe 1
Enter atmosphere；
Exhaust gas sprays to downwards ponding chamber with by spray tube 23 when through inlet chamber 21, baffling access 20 and outlet chamber 22
16 water is come into full contact with, and in exhaust gas and water contact process, sulfur dioxide and nitrogen oxides in exhaust gas are dissolved in alkaline water
In；
Water, by Ladder Overflow, comes into full contact with heat exchange with air and partial moisture is steamed when passing through Ladder Overflow pond 6
Hair especially when needing prevents flue gas emission from externally generating thermal pollution, has good reduction thermal pollution to reduce water temperature
Effect.
In systems stay operational process, baiting valve 13 is opened and closed according to the following rules:
When the pH value in Ladder Overflow pond 6 in water is less than or equal to 8.0, baiting valve 13 is opened；When in 6 water of Ladder Overflow pond
PH value be more than or equal to 8.7 when, close baiting valve 13；
There are two types of targets for the adjusting tool of exhaust gas exhaust temperature, and one is haze is prevented, one is prevent thermal pollution；Work
The adjusting target of exhaust gas exhaust temperature is determined as personnel；
When adjusting target is to prevent haze, in systems stay operational process, opens and stop according to the following rules
Temperature adjustment operation: the air inlet of air pump 28 is made to be connected to external high-temperature vapour pipe (steam pipe of such as boiler system), as the row of exhaust gas
When putting temperature lower than 80 DEG C, outlet valve 44, air returning valve 45, heat exchange air-valve 42 and intake valve 29 are opened, closes shut-off valve 32, starting
Air pump 28, to open temperature adjustment operation；External high-temperature vapour passes through shell by the tube side in shell and tube heat exchanger 33, exhaust gas
The shell side of tubing heat exchanger 33, exhaust gas are heated in shell and tube heat exchanger 33 by high-temperature vapour；Then in systems stay
In operation, when exhaust gas temperature is more than or equal to 90 degree, intake valve 29 and air pump 28 are closed to stop temperature adjustment operation；Work as exhaust gas
When temperature is less than 80 degree, intake valve 29 and air pump 28 are opened to be again turned on temperature adjustment operation；
When adjusting target is to prevent thermal pollution, in systems stay operational process, opens according to the following rules and stop adjusting
Warm operation: making the air inlet of air pump 28 be connected to atmosphere, when the exhaust temperature of exhaust gas is higher than 50 DEG C, opens outlet valve 44, return air
Valve 45, heat exchange air-valve 42 and intake valve 29 close shut-off valve 32, and booster air pump 28 is to start temperature adjustment operation；Air passes through shell
Tube side in tubing heat exchanger 33, exhaust gas pass through the shell side of shell and tube heat exchanger 33, and exhaust gas is in shell and tube heat exchanger 33
It is interior to be cooled down by air；Then it in systems stay operation, when the difference of exhaust gas temperature and atmospheric temperature is less than 3 DEG C, closes
Intake valve 29 and air pump 28 are to stop temperature adjustment operation；When the difference of exhaust gas temperature and atmospheric temperature be greater than 6 DEG C when, open into
Air valve 29 and air pump 28 are to be again turned on temperature adjustment operation.
The temperature for opening air pump 28 and the temperature for closing air pump 28 have certain difference, can prevent from frequenting switch on and closing
Hold one's breath pump 28, extend the service life of air pump 28 and intake valve 29) calcination plant when stopping discharge steam, stops calcination plant and steams
The operation of gas exhaust system.
During systems stay, Gas Stirring operation is opened and closed according to the following rules:
Above and below the pH value of the water in water chamber 9 fluctuation range be more than or equal to 0.5 and the duration be greater than 1 minute and
When system does not carry out the temperature adjustment operation to prevent haze as target, it is ensured that the air inlet of air pump 28 is connected to atmosphere, opens
Air pump 28 and stirring air-valve 43, air enters air-spreading disk 25 by stirring gas circuit 27, and forms bubble to floating through each qi-emitting hole 26
It rises, the water in water chamber 9 is stirred during bubble floating, calcium hydroxide is made equably to be dissolved in the water, to make
The pH value of water tends towards stability；
Fluctuation range is less than 0.5 above and below the pH value of the water in water chamber 9 and the duration is greater than 1 minute and system
When not carrying out temperature adjustment operation (including the temperature adjustment operation under two kinds of targets of haze and anti-thermal pollution), stirring 43 He of air-valve is closed
Air pump 28, to stop Gas Stirring operation；
Fluctuation range is less than 0.5 above and below the pH value of the water in water chamber 9 and the duration is greater than 1 minute and system
When carrying out the temperature adjustment operation under anti-thermal pollution target, closes stirring air-valve 43 but air pump 28 is kept to run, to stop gas
Body stirs operation but persistently carries out temperature adjustment operation；
When system starts to carry out the temperature adjustment operation to prevent haze as target, stirring air-valve 43 is closed, gas is stopped
Body stirs operation.
Be equipped with pH value sensor 47 in spill cavity 17, the shut-off valve 32, outlet valve 44, air returning valve 45, heat exchange air-valve 42,
It stirs air-valve 43 and baiting valve 13 is solenoid valve；
PH value sensor 47, water circulating pump 10, air exhauster 5, temperature sensor 30, air pump 28, shut-off valve 32, outlet valve
44, air returning valve 45, heat exchange air-valve 42, stirring air-valve 43 and baiting valve 13 are connected with an electric control gear 48；
Water circulating pump 10 and air exhauster 5 are controlled by electric control gear 48 to be opened；
The data of 48 continuous collecting pH value sensor 47 of electric control gear to obtain the pH value in Ladder Overflow pond 6 in water,
And then baiting valve 13 is controlled by electric control gear 48 and stirs the opening and closing of air-valve 43；
The data of 48 continuous collecting temperature sensor 30 of electric control gear to obtain the exhaust gas temperature of 4 entrance of chimney, into
And the opening and closing of air pump 28, shut-off valve 32, outlet valve 44, air returning valve 45 and the air-valve 42 that exchanges heat are controlled by electric control gear 48.
In this way, the utility model can be largely fulfilled automatic control, the running human cost of system is saved.
Certainly, the utility model is also fully able to the operation of manual control whole system by manually controlling each component.
Primary transducer correction operation is carried out every two weeks, including temperature sensor 30 verifies operation and 47 school of pH value sensor
Test operation；
Temperature sensor 30 verify operation be: staff by thermometer 31 read exhaust gas temperature, by the temperature value with
The reading of temperature sensor 30 is compared, when the registration of thermometer 31 differs 1 DEG C or more with the reading of temperature sensor 30,
Thermometer 31 and temperature sensor 30 are replaced simultaneously；
When pH value sensor 47 verifies operation: staff passes through the pH value of water in PH detector test water chamber 9, by this
PH value is compared with the reading of pH value sensor 47, when the difference of the two is greater than 0.5, replaces pH value sensor 47.
Temperature sensor 30 verifies operation and pH value sensor 47 verifies operation and can ensure the correctness of sensor, prevents
Sensor error bring controls Problem of Failure.
When in Ladder Overflow pond 6 discharge reduction, water level reduces by 10 centimetres or more compared with original state in water chamber 9 when, lead to
It crosses external water source (such as tap water) and carries out moisturizing into water chamber 9.The purpose of water-refilling operation is to make up in system operation
Moisture content reduce phenomenon, there is in holding system sufficient recirculated water.
Above embodiments are only to illustrate rather than limit the technical solution of the utility model, although referring to above-described embodiment pair
The utility model is described in detail, those skilled in the art should understand that: still can to the utility model into
Row modification or equivalent replacement should all without departing from any modification or partial replacement of the spirit and scope of the utility model
Cover in the scope of the claims of the utility model.
Claims (5)
1. calcination plant steam exhaust system, including exhaust pipe, using fluid flow direction as downstream direction, exhaust pipe
Spray equipment and electrostatic tar collecting apparatus are equipped with by upstream toward downstream series connection, the end of exhaust pipe is connected with for arranging exhaust gas
Enter the chimney of atmosphere, the exhaust pipe of spray equipment upstream side is equipped with air exhauster；
It is characterized by also including there is circulated sprinkling mechanism, circulated sprinkling mechanism includes Ladder Overflow pond, spray water inlet pipe, institute
State spray equipment and spray outlet pipe；Spray equipment connects the spray water inlet pipe and spray outlet pipe；
Ladder Overflow pond top is its water inlet end and its bottom is equipped with water chamber；Spray water inlet pipe one end be connected with water chamber and
The other end is connected with the case top of spray equipment, and spray water inlet pipe is equipped with water circulating pump；The end of spray outlet pipe is set
There is the top for being open and being located at Ladder Overflow pond water inlet end；The material stock for being loaded with calcium hydroxide powder is equipped at the top of Ladder Overflow pond
Case, material stock lower box part are connected with feeder pipe, and towards Ladder Overflow pond below, feeder pipe is equipped with blanking for the lower end of feeder pipe
Valve.
2. calcination plant steam exhaust system according to claim 1, it is characterised in that: spray equipment includes shell, shell
Body bottom right side is equipped with overflow water outlet baffle plate, and overflow water outlet baffle plate and the shell on the left of it surround ponding chamber, overflow water outlet baffle plate
Spill cavity is surrounded with the shell on the right side of it, spill cavity is connected with the spray outlet pipe；Along a left side in shell above spill cavity
Right direction is alternately equipped with lower baffle plate and overhead gage, and overhead gage and lower baffle plate are fixedly connected with housing sidewall, and overhead gage lower end is high
In overflow water outlet baffle plate top and overhead gage upper end is connected with housing top wall；
Lower baffle plate upper end is lower than housing top wall and its lower end is higher than shell bottom wall, and lower baffle plate lower end is lower than overflow water outlet baffle plate top
End；
The ponding water surface of shell and spill cavity between lower baffle plate, overhead gage, overhead gage and lower baffle plate surrounds baffling access；Most
Inlet chamber is surrounded between the lower baffle plate and housing left side wall of left, surrounds outlet between the overhead gage and housing right side wall of rightmost
Chamber；Inlet chamber bottom is connected with the exhaust pipe of spray equipment upstream side and junction is higher than overflow water outlet baffle plate,
It is connected at the top of outlet chamber with the exhaust pipe in spray equipment downstream side；
Case top is equipped with horizontally disposed spray tube in left-right direction, and spray tube is higher than each lower baffle plate and passes through each overhead gage；
Spray tube in inlet chamber, outlet chamber and baffling access is equipped with several nozzles separately down；Spray water inlet pipe protrudes into shell simultaneously
It is connected with spray tube.
3. calcination plant steam exhaust system according to claim 1, it is characterised in that: during the water chamber bottom is equipped with
Empty air-spreading disk, air-spreading disk is horizontally disposed and its upper surface is evenly distributed with several qi-emitting holes；Air-spreading disk is connected with stirring gas circuit,
Stirring gas circuit is connected with air pump, is equipped with intake valve at air pump air inlet.
4. calcination plant steam exhaust system according to claim 3, it is characterised in that: under the electrostatic tar collecting apparatus
Thermoregulative mechanism is equipped at the exhaust pipe of roam all around the would；The exhaust pipe of chimney entrance is equipped with temperature sensor and/or temperature
Table is spent, the exhaust pipe of electrostatic tar collecting apparatus downstream side is equipped with shut-off valve；
Thermoregulative mechanism includes shell and tube heat exchanger, and shell and tube heat exchanger is connected with temperature adjustment air inlet path, temperature adjustment exhaust line, exhaust gas
Air inlet path and exhaust gas return-air road；Shell and tube heat exchanger has tube side and shell side, the both ends point of the tube side of shell and tube heat exchanger
Do not connect the temperature adjustment air inlet path and temperature adjustment exhaust line, the both ends of the shell side of shell and tube heat exchanger be separately connected the exhaust gas into
Gas circuit and exhaust gas return-air road；Temperature adjustment exhaust line is connected with atmosphere or external heat recovery apparatus；
Temperature adjustment air inlet path is connected by three-way connection with the air pump, and the first interface of the three-way connection connects the air pump
Gas outlet, the second interface of three-way connection connects the temperature adjustment air inlet path, and the third interface of three-way connection connects the stirring
Gas circuit, the air inlet of air pump are connected to external high-temperature vapour pipe or connection atmosphere；Temperature adjustment air inlet path is equipped with heat exchange air-valve, stirs
It mixes gas circuit and is equipped with stirring air-valve；Gas inlet road is equipped with outlet valve, and exhaust gas return-air road is equipped with air returning valve.
5. calcination plant steam exhaust system according to claim 1, it is characterised in that: chimney top is equipped with shielding cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821463833.1U CN209287018U (en) | 2018-09-07 | 2018-09-07 | Calcination plant steam exhaust system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821463833.1U CN209287018U (en) | 2018-09-07 | 2018-09-07 | Calcination plant steam exhaust system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209287018U true CN209287018U (en) | 2019-08-23 |
Family
ID=67653005
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821463833.1U Expired - Fee Related CN209287018U (en) | 2018-09-07 | 2018-09-07 | Calcination plant steam exhaust system |
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| Country | Link |
|---|---|
| CN (1) | CN209287018U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108889109A (en) * | 2018-09-07 | 2018-11-27 | 河南嵩岳碳素有限公司 | Calcination plant steam exhaust system |
-
2018
- 2018-09-07 CN CN201821463833.1U patent/CN209287018U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108889109A (en) * | 2018-09-07 | 2018-11-27 | 河南嵩岳碳素有限公司 | Calcination plant steam exhaust system |
| CN108889109B (en) * | 2018-09-07 | 2024-05-24 | 河南嵩岳碳素有限公司 | Calcination workshop steam exhaust system |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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