CN201756541U - Electric furnace gas purifying and recovering equipment - Google Patents
Electric furnace gas purifying and recovering equipment Download PDFInfo
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- CN201756541U CN201756541U CN2010202808871U CN201020280887U CN201756541U CN 201756541 U CN201756541 U CN 201756541U CN 2010202808871 U CN2010202808871 U CN 2010202808871U CN 201020280887 U CN201020280887 U CN 201020280887U CN 201756541 U CN201756541 U CN 201756541U
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- 238000000746 purification Methods 0.000 claims abstract description 62
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000000428 dust Substances 0.000 claims abstract description 37
- 238000011084 recovery Methods 0.000 claims abstract description 21
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 239000007789 gas Substances 0.000 claims description 192
- 239000003034 coal gas Substances 0.000 claims description 31
- 238000001914 filtration Methods 0.000 claims description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- 239000012535 impurity Substances 0.000 claims description 14
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 9
- 238000005496 tempering Methods 0.000 claims description 5
- 238000004458 analytical method Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 2
- 238000002955 isolation Methods 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 239000007921 spray Substances 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 abstract description 2
- 239000002956 ash Substances 0.000 description 22
- 238000000034 method Methods 0.000 description 17
- 230000008569 process Effects 0.000 description 15
- 238000004868 gas analysis Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 239000000203 mixture Substances 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 229910002091 carbon monoxide Inorganic materials 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005108 dry cleaning Methods 0.000 description 3
- 239000010881 fly ash Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
本实用新型公开了一种电炉煤气净化回收设备，包括：荒煤气部，能够燃烧处理及排放电炉产生的荒煤气，荒煤气部连接于电炉；净煤气部，连接于荒煤气部，用于净化并回收炉气，净煤气部还包括：冷却装置，其输入端连接于荒煤气部，冷却装置用于冷却高温炉气；净化除尘装置，其输入端连接于冷却装置的输出端，净化除尘装置用于对炉气进行过滤；回收装置，其输入端连接于净化除尘装置的输出端，回收装置用于回收合格煤气以及燃烧处理不合格煤气，本实用新型的电炉煤气净化回收设备能够实现电炉煤气的高效安全净化回收，并同时具有投资省、能耗低、耗水量小以及占地面积小等优点。
The utility model discloses an electric furnace gas purification and recovery device, comprising: a raw gas part, which can burn and discharge the raw gas produced by the electric furnace, and the raw gas part is connected to the electric furnace; a clean gas part, connected to the raw gas part, is used for purification And recover the furnace gas, the clean gas part also includes: a cooling device, the input end of which is connected to the raw gas part, and the cooling device is used to cool the high-temperature furnace gas; a purification and dust removal device, whose input end is connected to the output end of the cooling device, and the purification and dust removal device It is used to filter the furnace gas; the recovery device, its input end is connected to the output end of the purification and dust removal device, and the recovery device is used to recover qualified gas and burn unqualified gas. The electric furnace gas purification and recovery equipment of the utility model can realize the recovery of electric furnace gas Efficient and safe purification and recycling, and at the same time has the advantages of low investment, low energy consumption, small water consumption and small footprint.
Description
Technical field
The utility model relates to the purification of electric furnace coal gas and reclaims particularly a kind of electric furnace gas purification and reclamation equipment.
Background technology
Can supervene a large amount of furnace gases that contains carbon monoxide in the generative process of Metal smelting, the coal gas that just is commonly called as, because the temperature in the Metal smelting process is very high, so its furnace gas of supervening also is to have the very gas of high-temperature, such as, the furnace gas temperature that converter produced in the blowing process is approximately 1600 degrees centigrade, and the furnace gas that produces in the novel electrosmelting process also up to 600 degrees centigrade about, and, in the high-temperature furnace gas except that the carbon monoxide that contains high level, also contain a large amount of dust impurity, so the recycling of furnace gas has certain degree of difficulty, on the one hand the carbon monoxide content of high density makes high-temperature furnace gas inflammable and explosive, thus in removal process to sealingly secure measure have relatively high expectations; On the other hand, a large amount of dust impurity in the furnace gas also need to carry out filtration, purification, so that the furnace gas that reclaims can reach the use standard.
Raising along with scientific and technological level, the ratio that electric furnace is used at metallurgical technology is more and more higher, and comparatively maturation and common closed electric furnace gas cleaning mode have stove internal combustion treatment scheme, wet purification flow process and dry cleaning flow process etc. at present, wherein: stove internal combustion treatment scheme is that the coal gas that will produce in the stove directly burns at the fire door place, gas after the burning is done purifying treatment, total system is simple relatively, but coal gas can't reclaim; The wet purification flow process is to adopt the wet processed mode flue coal gas behind the reclaiming clean then, its flow process control is simple relatively, help eliminating unsafe factor to a certain extent, recyclable coal gas, but there is the shortcoming that floor space is big, energy consumption is high and water loss is big in this flow process; The dry cleaning flow process is relative wet purification flow process, it does not need bigger industrial water consumption, system energy consumption is low, the purification efficiency height, the coal gas water content that reclaims is low, but dry cleaning also exists many problems to need to solve at present, such as, system's investment is higher relatively, operation is stable inadequately, reveal blast and wait danger coefficient higher, air-flow is more serious to the fly-ash separator internal breakdown, influences dust removing effects and has quickened the aging of device interior, present relevant device all can't above-mentioned each problem of adequate solution, definite says, the technical equipment of association area seldom be we can say the degree that is in technological gap.
Patent case as Chinese patent application numbers 200910024958.3 has proposed a kind of " method that coal gas of converter is absolutely dry purifies and the UTILIZATION OF VESIDUAL HEAT IN Apparatus and method for ", the coal gas of high temperature of this technical scheme by discharging in movable gas hood and the gasification cooling flue cool furnace, afterwards it is fed through the inner dedusting of gravitational precipitator, again successively by the compensation combustion type waste heat boiler, sack cleaner, induced draft fan, finally be sent to gas chamber, at first, this technical scheme is applicable to converter smelting, can only say more approaching with the technical field of electrosmelting, for electrosmelting, its cooling and step such as dedusting and the effect that can reach thereof can not satisfy related request, can not fill up above-mentioned technological gap; In addition, this technical scheme does not fully take into account the damage to fly-ash separator of the dust that contains in the coal gas, makes its aged problem; Have again, do not have the thorough especially danger of considering gas leak or combustion explosion in the whole treating processes, do not fully take into account stopping property at the details place, security in the dust removal process is not avoided gas leak even phenomenon such as is refluxed, fires and design corresponding structure for different operating modes or emergency case yet.
Given this plant situation, the design people borrow its for many years the related-art technology experience and abundant expertise, constantly research and develop improvement, and, proposed the technical scheme of electric furnace gas purification and reclamation equipment of the present utility model through a large amount of practical proofs.
The utility model content
The purpose of this utility model is to provide a kind of electric furnace gas purification and reclamation equipment, can realize that the highly effective and safe of electric furnace coal gas purify to reclaim, and have reduced investment simultaneously, advantage such as energy consumption is low, water loss is little and floor space is little.
To achieve these goals, the utility model provides a kind of electric furnace gas purification and reclamation equipment, comprising:
Can burn processing and the raw gas portion of the raw gas that produces of discharging electric furnace, described raw gas portion is connected in electric furnace;
Purify and reclaim the purified gas portion of furnace gas, be connected in described raw gas portion, described purified gas portion also comprises: the refrigerating unit of cooling down high-temperature furnace gas, its input terminus are connected in described raw gas portion; Furnace gas is carried out filtering purifying and dedusting device, and its input terminus is connected in the output terminal of described refrigerating unit; Reclaim the retrieving arrangement of qualified coal gas and the defective coal gas of burn processing, its input terminus is connected in the output terminal of described purifying and dedusting device.
Above-mentioned electric furnace gas purification and reclamation equipment, wherein, described raw gas portion comprises: water cooled pipeline, the one end is connected in described electric furnace; First pipeline, an end of described first pipeline is connected in the other end of described water cooled pipeline, and the other end of described first pipeline is connected in a water seal safety valve; The raw gas burner of the raw gas of electric furnace generation is diffused in burning; Second pipeline, one end are communicated in described first pipeline, and the other end is connected in described raw gas burner, and described second pipeline is provided with the first water seal trip valve; The 3rd pipeline, one end are communicated with described first pipeline, and the other end is communicated with described refrigerating unit input terminus, and described the 3rd pipeline is provided with the second water seal trip valve.
Above-mentioned electric furnace gas purification and reclamation equipment, wherein, described refrigerating unit is a machine power air cooler.
Above-mentioned electric furnace gas purification and reclamation equipment, wherein, described purifying and dedusting device comprises: the pre-dedusting device of filtration treatment furnace gas in advance, the input terminus of described pre-dedusting device is connected in the output terminal of described refrigerating unit, described pre-dedusting device have the filtering of temporary institute impurity ash bucket and be provided with unloading valve; Main air blower, its input terminus is connected in the output terminal of described pre-dedusting device; Receive and filter the sack cleaner of the furnace gas that is pressed into by described main air blower, described sack cleaner input terminus is connected in described main air blower output terminal, described sack cleaner output terminal is connected in described retrieving arrangement through a water seal reverse checkvalve, described sack cleaner have the filtering of temporary institute impurity ash bucket and be provided with unloading valve; Ash-storing bin, described pre-dedusting device ash bucket and sack cleaner ash bucket are respectively through sending apparatus for ash to be communicated in described ash-storing bin.
Above-mentioned electric furnace gas purification and reclamation equipment, wherein, described pre-dedusting device is tornado dust collector.
Above-mentioned electric furnace gas purification and reclamation equipment, wherein, described main air blower is the frequency-adjustable speed-adjustable blower fan.
Above-mentioned electric furnace gas purification and reclamation equipment wherein, is provided with motor-driven control valve between described pre-dedusting device and the described main air blower.
Above-mentioned electric furnace gas purification and reclamation equipment, wherein, described sack cleaner is a high leakproofness round shape pulse backblowing sack cleaner.
Above-mentioned electric furnace gas purification and reclamation equipment, wherein, described sack cleaner is a nitrogen back flushing type sack cleaner.
Above-mentioned electric furnace gas purification and reclamation equipment, wherein, described retrieving arrangement comprises: to purifying the gas analysis instrument that the back furnace gas carries out composition analysis, described gas analysis instrument input terminus is connected in described purifying and dedusting device output terminal, and described gas analysis instrument output channel is divided into the 4th pipeline and the 5th pipeline two-way; The purified gas burner links to each other with described the 4th pipeline, is provided with pneumatic cut-off valve and tempering partition apparatus by described gas analysis instrument successively to described purified gas burner direction on described the 4th pipeline; Outer trickle water cooler, its input terminus are communicated in described the 5th pipeline, also are provided with pneumatic cut-off valve on described the 5th pipeline; Gas storage holder, its input terminus are connected in described outer trickle water cooler output terminal.
From the above, electric furnace gas purification and reclamation equipment of the present utility model has following advantage and characteristics:
1, electric furnace gas purification and reclamation equipment of the present utility model is by combining refrigerating unit, purifying and dedusting device, retrieving arrangement, can purify safely and efficiently and reclaim electric furnace coal gas, set up water seal and nitrogen seal structure in necessary part, further strengthened the sealingly secure of entire equipment.
2, electric furnace gas purification and reclamation equipment of the present utility model successively cools off coal gas by water cooled pipeline, machine power air cooler and final outer trickle water cooler, has guaranteed that gas temperature is controlled in the reasonable range, has improved the safety coefficient of equipment.
3, the purifying and dedusting device in the electric furnace gas purification and reclamation equipment of the present utility model can comprise tornado dust collector and pulse backblowing sack cleaner, dust impurity in the coal gas is fully filtered, and scavenging process safety coefficient height can be avoided the generation of blast accident.
4; electric furnace gas purification and reclamation equipment of the present utility model includes raw gas part and purified gas part; two parts's complementary work that can match; when also instability or purified gas partly need operating mode such as Maintenance and Repair at just blow-on coal gas generating capacity; can partly handle the raw gas of electric furnace generation (according to the general understanding of this area by raw gas; " raw gas " is meant still the furnace gas without purifying treatment; refer in particular in the utility model at the just blow-on coal gas generating capacity furnace gas that electric furnace produces when also instability or purified gas partly need operating mode such as Maintenance and Repair); and during the normal operating mode that reclaims of electric furnace works better coal gas; can cut off the path of raw gas part by the water seal trip valve, thereby make purified gas part works better collect coal gas.
5, electric furnace gas purification and reclamation equipment of the present utility model is provided with the water seal relief valve device, when electric furnace collapses the material phenomenon and causes the burner hearth internal pressure too high, when for example surpassing 300 handkerchiefs, raw gas in the stove then can break through the water seal of water seal safety valve and discharge atmosphere, avoided having improved the safety coefficient of entire equipment because furnace pressure is excessive and accidents caused.
6, the sack cleaner of electric furnace gas purification and reclamation equipment of the present utility model adopts round shape, and adopts the nitrogen reverse gas cleaning, and is safer when coal gas is purified in fly-ash separator.
7, electric furnace gas purification and reclamation equipment of the present utility model have that floor space is little, reduced investment, advantage such as energy consumption is low and water loss is little.
Description of drawings
The following drawings only is intended to the utility model done and schematically illustrates and explain, does not limit scope of the present utility model.
Fig. 1 is the utility model electric furnace gas purification and reclamation equipment one-piece construction synoptic diagram;
Fig. 2 is the utility model electric furnace gas purification and reclamation equipment raw gas portion synoptic diagram;
Fig. 3 is the utility model electric furnace gas purification and reclamation equipment purified gas portion's refrigerating unit and purifying and dedusting device synoptic diagram;
Fig. 4 is the utility model electric furnace gas purification and reclamation equipment purified gas portion retrieving arrangement synoptic diagram.
Description of reference numerals:
100 raw gas portions
10 water cooled pipelines
11 first pipelines
12 water seal safety valve
13 second pipelines
131 first water seal trip valves
14 raw gas burners
15 the 3rd pipelines
151 second water seal trip valves
200 purified gas portions
21 refrigerating units
22 purifying and dedusting devices
221 pre-dedusting devices
222 main air blowers
223 sack cleaners
224 send apparatus for ash
225 ash-storing bins
226 motor-driven control valves
227 water seal reverse checkvalves
23 retrieving arrangements
231 gas analysis instrument
232 purified gas burners
233 outer trickle water coolers
234 gas storage holders
24 the 4th pipelines
241 pneumatic cut-off valves
242 tempering partition apparatus
25 the 5th pipelines
251 pneumatic cut-off valves
3 electric furnaces
4 nitrogen seal structures
5 unload quick-fried valve
Embodiment
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast description of drawings embodiment of the present utility model, but one of ordinary skill in the art should to understand not be as restriction.
Please refer to Fig. 1, be the utility model electric furnace gas purification and reclamation equipment one-piece construction synoptic diagram, as shown in the figure, electric furnace gas purification and reclamation equipment of the present utility model mainly comprises raw gas portion 100 and purified gas portion 200, wherein raw gas portion 100 is mainly used in the raw gas of burn processing and the generation of discharging electric furnace, purified gas portion 200 is mainly used in and purifies furnace gas and reclaim purified gas, raw gas portion 100 directly connects electric furnace, purified gas portion 200 is connected in raw gas portion 100, purified gas portion 200 further comprises again: refrigerating unit 21, purifying and dedusting device 22 and retrieving arrangement 23, wherein refrigerating unit 21 is mainly used in high-temperature furnace gas is cooled off, purifying and dedusting device 22 is mainly used in a large amount of dust impurity that contain in the filtering furnace gas, and retrieving arrangement 23 is mainly used in the coal gas after purifying is carried out composition analysis, qualified cool off recovery, underproof lighting diffused.
Please in conjunction with reference to figure 1 and Fig. 2, wherein Fig. 2 is the utility model electric furnace gas purification and reclamation equipment raw gas portion synoptic diagram, electric furnace 3 is smelted the furnace gas that produces and is at first inputed to raw gas portion 100, raw gas portion 100 comprises a water cooled pipeline 10, one end of water cooled pipeline 10 is connected in electric furnace 3, the other end is connected in water seal safety valve 12 by first pipeline 11, one second pipeline, 13 one ends are communicated in first pipeline 11, the other end connects raw gas burner 14, second pipeline 13 is provided with the first water seal trip valve 131, an end that also is communicated with one the 3rd pipeline 15 on first pipeline 11, and being communicated in purified gas portion 200, the three pipelines 15, the other end of the 3rd pipeline 15 is provided with the second water seal trip valve 151.
Electric furnace 3 is smelted the high-temperature furnace gas that produces in the production process and is at first tentatively cooled off through water cooled pipeline 10, for example temperature can drop to about 500 degrees centigrade from about 600 degrees centigrade, through after the preliminary cooling of water cooled pipeline 10, furnace gas enters among first pipeline 11, at this moment, if purified gas portion 200 needs Maintenance and Repair or electric furnace just to open also instability of work, then cut off the second water seal trip valve 151, the blocking-up furnace gas flows to purified gas portion 200, the first water seal trip valve 131 is opened, furnace gas is handled in raw gas portion 100, generally speaking, furnace gas is delivered to raw gas burner 14 by second pipeline 13, diffuse by 14 burnings of raw gas burner, in addition, during electric furnace 3 work, " the material phenomenon of collapsing " may take place, cause the pressure in the electric stove hearth to increase rapidly, for example may surpass 300 handkerchiefs, at this moment, the expansible furnace gas is sent to water seal safety valve 12 by first pipeline 11 rapidly, the preset pressure of water seal safety valve 12 can be set at and be equal to or slightly less than 300 handkerchiefs, in this case, the high pressure furnace gas will break through the water seal of water seal safety valve 12 and be discharged into atmosphere, play the effect of decompression for electric furnace 3 inside, avoided causing security incident (carbon monoxide content being lower in the high pressure furnace gas that discharges during " material collapses " situation owing to furnace pressure constantly rapidly rises, can directly discharge atmosphere, this is well known to those skilled in the art, and does not repeat them here).
And when electric furnace 3 works better, furnace gas produces stable can the purification when reclaiming, and then cuts off the first water seal trip valve 131, open the second water seal trip valve 151, like this, furnace gas will be through first pipeline 11 and the 3rd pipeline 15 and is inputed to purified gas portion 200, purifies and reclaims.Because the first water seal trip valve 131 is arranged on second pipeline 13, can't influence the safeguard protection of water seal safety valve 12 effect so it is cut off, the high pressure furnace gas that produces when " material collapses " still can carry out pressure release by water seal safety valve 12.
Under request in person in conjunction with reference to figure 3 and Fig. 4, wherein Fig. 3 is the utility model electric furnace gas purification and reclamation equipment purified gas portion's refrigerating unit and purifying and dedusting device synoptic diagram, Fig. 4 is the utility model electric furnace gas purification and reclamation equipment purified gas portion retrieving arrangement synoptic diagram, as shown in the figure, the 3rd pipeline 15 1 ends are communicated in first pipeline 11, the other end is connected in refrigerating unit 21 input terminuss, the furnace gas that refrigerating unit 21 is mainly used in being about to carry out purifying and dedusting cools off, in the present embodiment, what refrigerating unit adopted is machine power air cooler, high-temperature furnace gas feeds machine power air cooler through the 3rd pipeline 11, its temperature will decline to a great extent, such as by above-mentioned by water cooled pipeline 10 furnace gas temperatures by 600 degrees centigrade of furnace gases of reducing to 500 degrees centigrade, be reduced to about 300 degrees centigrade by 500 degrees centigrade through machine power air cooler furnace gas, the furnace gas of this temperature levels can directly be passed in the purifying and dedusting device 22 and purify again.
The output terminal of refrigerating unit 21 is connected in the input terminus of purifying and dedusting device 22, and purifying and dedusting device 22 is mainly used in furnace gas is filtered, and with filterings such as dust impurity wherein, thereby obtains the satisfactory coal gas of cleanliness factor.Purifying and dedusting device 22 mainly comprises pre-dedusting device 221, main air blower 222, sack cleaner 223, send apparatus for ash 224 and ash-storing bin 225, wherein pre-dedusting device 221 is used for furnace gas is carried out a filtering in advance flow process, its input terminus is connected in the output terminal of refrigerating unit 21, pre-dedusting device 221 mainly is dust and the sedimentation in pre-dedusting device 221 of the spark in the furnace gas that makes the larger particles that furnace gas contains, effectively to alleviate dust impurity to the wearing and tearing of main air blower 222 impellers of back and the filter bag of avoiding furnace gas spark scaling loss sack cleaner 223, the impurity of filtering can temporarily be stored in the ash bucket of pre-dedusting device 221, the unloading valve of ash bucket is closed, in the present embodiment, what pre-dedusting device 221 was selected for use is tornado dust collector, the impurity of filtering temporarily is stored in the ash bucket of tornado dust collector, its concrete structure is well known to those skilled in the art, just repeats no more at this.
The output terminal of pre-dedusting device 221 is connected in the input terminus of main air blower 222, the output terminal of main air blower 222 is connected in the input terminus of sack cleaner 223, enter into main air blower 222 through the filtering in advance furnace gas of pre-dedusting device 221, and furnace gas is pressed in the sack cleaner 223 further dedusting by main air blower 222, main air blower 222 is preferably selected the frequency-adjustable speed-adjustable blower fan for use, so just, can carry out the adjusting of corresponding furnace gas rate of air sucked in required according to the electrosmelting load, so that the total system operation is more stable, and in order further to control the furnace gas amount size that inputs to main air blower 222, between pre-dedusting device 221 and main air blower 222, also be provided with a motor-driven control valve 226, it is an existing apparatus, does not repeat them here.
The input terminus of sack cleaner 223 is connected in the output terminal of main air blower 222, furnace gas is sent to and carries out further dust removal by filtration in the sack cleaner, consider that furnace gas has inflammable and explosive property, and avoid furnace gas to reveal atmosphere pollution, sack cleaner 223 of the present utility model adopts the round shape pulse backblowing sack cleaner of high leakproofness, the columnar structured space of sack cleaner does not have the air-flow dead angle, can effectively reduce the explosion hazard of furnace gas, and adopt the pulse backblowing sack cleaner is in order to obtain better dust removing effects, make filtration back furnace gas cleanliness factor higher, and, preferred, can adopt the mode of nitrogen blowback further to improve security.In one embodiment, sack cleaner inside can be divided into four chambers, wherein three chambers are used for filtering, a chamber is used for deashing, and purge mode adopts special back blowing machine, regularly winding-up in turn, every chamber can be equipped with air inlet and be given vent to anger two Pneumatic butterfly valves, both switch each other, are well known to those skilled in the art about the concrete structure of pulse backblowing sack cleaner, just repeat no more at this.Dust impurity by sack cleaner 223 filterings temporarily is stored in its ash bucket, the unloading valve temporary close of ash bucket.On sack cleaner 223, also can be provided with and unload quick-fried valve 5 security devices such as grade.The output terminal of sack cleaner 223 is connected in retrieving arrangement 23 through a water seal reverse checkvalve 227.
The ash bucket of pre-dedusting device 221 and sack cleaner 223 is respectively through sending apparatus for ash 224 to be communicated in ash-storing bin 225, sending apparatus for ash 224 to be mainly used in is delivered to the dust in pre-dedusting device 221 and sack cleaner 223 ash buckets in the ash-storing bin 225, send an end of apparatus for ash 224 to be connected in the ash bucket of pre-dedusting device 221 or sack cleaner 223, the other end is connected in ash-storing bin 225, in the present embodiment, what send apparatus for ash 224 employings is worm conveyor, but not as restriction.Ash-storing bin 225 is used to dust impurity that stores pre-dedusting device 221 and sack cleaner 223 filterings etc.In the time dust will being sent to ash-storing bin 225, the ash bucket unloading valve of pre-dedusting device 221 and sack cleaner 223 is opened, dust falls and by sending apparatus for ash 224 that it is delivered in the ash-storing bin 225, because pre-dedusting device 221 is to link to each other with ash-storing bin 225 respectively with sack cleaner 223, so send ash manipulation to carry out simultaneously, also can carry out respectively.Conventional roof scrubber can be set on the ash-storing bin 225 and unload quick-fried valve 5 etc., its concrete structure has been familiar with by those skilled in the art, does not repeat them here.
Please refer to Fig. 4 below, synoptic diagram for retrieving arrangement 23, as shown in the figure, the output terminal of purifying and dedusting device 22 is connected in the input terminus of retrieving arrangement 23, retrieving arrangement 23 mainly comprises: gas analysis instrument 231, purified gas burner 232, outer trickle water cooler 233 and gas storage holder 234, wherein, the input terminus of gas analysis instrument 231 links to each other through the output terminal of water seal reverse checkvalve 227 with sack cleaner 223, make the coal gas after the purification can only be by purifying and dedusting device 22 toward the transmission of retrieving arrangement 23 directions, the output channel of gas analysis instrument 231 is divided into the two-way pipeline, i.e. the 4th pipeline 24 and the 5th pipeline 25, the 4th pipeline 24 links to each other with purified gas burner 232,25 in the 5th pipeline is connected in outer trickle water cooler 233 input terminuss, and the output terminal of outer trickle water cooler 233 then is connected with gas storage holder 234.Be provided with successively on pneumatic cut-off valve 241 and tempering partition apparatus 242, the five pipelines 25 to purified gas burner 232 directions by gas analysis instrument 231 on the 4th pipeline 24 and also be provided with pneumatic cut-off valve 251.
Composition analysis through gas analysis instrument 231, can learn whether its composition of coal gas after the purifying and dedusting meets the recovery requirement, when composition is defective, cut off the pneumatic cut-off valve 251 of the 5th pipeline 25, open the pneumatic cut-off valve 241 of the 4th pipeline 24, underproof coal gas is lighted through purified gas burner 232 diffused, the tempering partition apparatus 242 on the 4th pipeline 24 has the effect that prevents the reverse extension of flame; And as dividing when qualified, cut off the pneumatic cut-off valve 241 on the 4th pipeline 24, open the pneumatic cut-off valve 251 of the 5th pipeline 25, make qualified coal gas trickle water cooler 233 outside the 5th pipeline 25 is delivered to, from the above mentioned, furnace gas is being about 300 degrees centigrade through temperature after the cooling of apparatus for supercooling 21, can slightly reduce through purifying and dedusting device 22 temperature, such as dropping to about 250 degrees centigrade, this temperature is still higher, can not directly enter gas storage holder 234 reclaims, and can reduce to about 70 degrees centigrade through outer trickle water cooler 233 temperature of gas again, the coal gas that the outer trickle water cooler 233 of warp cools can directly enter gas storage holder 234 and reclaim, about the concrete structure of outer trickle water cooler, be well known to those skilled in the art, just repeat no more at this.
More than be whole structure of the utility model electric furnace gas purification and reclamation equipment and principle of work, what be worth proposition is, in order further to improve the sealingly secure of entire equipment, nitrogen seal structure 4 can be set on the device of many places, for example on connecting tube, main air blower, sack cleaner and the ash-storing bin between first to the 5th pipeline, each device the nitrogen envelope can be set all, the concrete structure of relevant nitrogen envelope has been the known technology of this area, does not repeat them here.
The above only is the schematic embodiment of the utility model, is not in order to limit scope of the present utility model.Any those skilled in the art, equivalent variations of having done under the prerequisite that does not break away from design of the present utility model and principle and modification all should belong to the scope that the utility model is protected.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202808871U CN201756541U (en) | 2010-08-04 | 2010-08-04 | Electric furnace gas purifying and recovering equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202808871U CN201756541U (en) | 2010-08-04 | 2010-08-04 | Electric furnace gas purifying and recovering equipment |
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| Publication Number | Publication Date |
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| CN201756541U true CN201756541U (en) | 2011-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202808871U Expired - Lifetime CN201756541U (en) | 2010-08-04 | 2010-08-04 | Electric furnace gas purifying and recovering equipment |
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| Country | Link |
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| CN (1) | CN201756541U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892089A (en) * | 2010-08-04 | 2010-11-24 | 中冶京诚工程技术有限公司 | Electric furnace gas purifying and recovering equipment |
| CN109708464A (en) * | 2019-01-02 | 2019-05-03 | 宁波大学 | A dual-tube rotary kiln for flue-gas split-flow purification |
-
2010
- 2010-08-04 CN CN2010202808871U patent/CN201756541U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892089A (en) * | 2010-08-04 | 2010-11-24 | 中冶京诚工程技术有限公司 | Electric furnace gas purifying and recovering equipment |
| CN101892089B (en) * | 2010-08-04 | 2013-10-16 | 中冶京诚工程技术有限公司 | Electric furnace gas purifying and recovering equipment |
| CN109708464A (en) * | 2019-01-02 | 2019-05-03 | 宁波大学 | A dual-tube rotary kiln for flue-gas split-flow purification |
| CN109708464B (en) * | 2019-01-02 | 2024-01-02 | 宁波大学 | Double-cylinder rotary kiln for smoke-gas split-flow purification |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: BEIJING JINGCHENG ZEYU ENERGY ENVIRONMENTAL PROTECTION ENGINEERING TECHNOLOGY Co.,Ltd. Assignor: Capital Engineering & Research Incorporation Limited Contract record no.: 2011110000088 Denomination of utility model: Electric furnace gas purification and reclamation equipment Granted publication date: 20110309 License type: Exclusive License Record date: 20110712 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20110309 Effective date of abandoning: 20131016 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20110309 Effective date of abandoning: 20131016 |
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| RGAV | Abandon patent right to avoid regrant |