CN101732938A - Method and device for electric catching and dry-process purification of carbon baking flue gas - Google Patents
Method and device for electric catching and dry-process purification of carbon baking flue gas Download PDFInfo
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- CN101732938A CN101732938A CN200810159188A CN200810159188A CN101732938A CN 101732938 A CN101732938 A CN 101732938A CN 200810159188 A CN200810159188 A CN 200810159188A CN 200810159188 A CN200810159188 A CN 200810159188A CN 101732938 A CN101732938 A CN 101732938A
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Abstract
The invention relates to a method for electric catching and dry-process purification of flue gas containing fluoride, tar and other harmful substances, in particular to a method and a device for electric catching and dry-process purification of carbon baking flue gas. The invention is characterized in that the flue gas is cooled through a dry bottom type cooler; tar and dust of coarse particles in the cooled flue gas are caught through an electrical tar precipitator; fluoride, dust and other harmful substances in the cooled and decoked flue gas are adsorbed through alumina in a reactor; gas is separated from mixture in a bag dust collector and then discharged; alumina containing adsorbed substances is separated from alumina; and the method and the device for electric catching and dry-process purification dust removal of carbon baking flue gas are high in efficiency of purification and dust removal. The invention has the advantages of simple process flow, thorough primary purification of the flue gas, no secondary pollution, capability of recycling alumina serving as adsorbent, capability of creating added value of tar, advanced art, high automation degree, effective reduction of production-operation costs, economical efficiency, reasonability, high efficiency of removing the flue gas and flue-gas emission superior to national emission standards.
Description
Technical field
The present invention relates to flue gas purifying method and device, particularly a kind of carbon baking flue gas electric fishing and dry cleaning method and device to fluorine-containing, tar and harmful substance.
Background technology
The flue dust that carbon element factory's roasting produces contains harmful substances such as a large amount of fluorine, tar, these materials all can produce serious harm to animals and plants, human body, multiclass carcinogenic substance harm wherein is bigger, and particularly fluorine gas has the corrosivity of height, and simple substance fluoride and fluorine ion all have hypertoxicity.Processing to carbon calcination fume is to adopt single electrical tar precipitator mostly at present, can only collect tar, and fluorine-containing material almost can't be handled in the flue gas, and very big harm is caused to environment in the discharging back; The tradition purification style adopts wet cleaning in addition, solution washing flue gas with sodium carbonate water, hydrogen fluoride gas is become to enter liquid by water-soluble sodium fluoride, spray makes flue gas cool-down simultaneously, tar cohesion back in the flue gas enters liquid with dust in flue gas and floats on the surface, other directly do not discharge glance coals etc. with the gas of alkali lye precursor reactant, this wet cleaning only becomes the part pernicious gas in the flue gas the water-soluble salt of energy, also to adopt in limewash and the washing lotion, making in the washing lotion harmful fluorine ion become the calcirm-fluoride solid that is not soluted in water refilters and discharges, but washing lotion can not be administered fully, also produce harmful solid slag, form secondary pollution, alkali lye is serious to equipment corrosion in addition, and operating cost is high.
Summary of the invention:
The objective of the invention is in order to solve the deficiency of above-mentioned technology, provide a kind of reasonable in design, technological process is simple, cost is low, adopt tar and coarse grained dust in the electrical tar precipitator seizure flue gas, harmful substances such as the fluorine in the alumina adsorption flue gas, dust, the carbon baking electric fishing that purifying and dedusting efficient is high and dry cleaning dust collection method and device.
The present invention can reach by following measure:
A kind of carbon baking flue gas electric fishing and dry cleaning method, it is characterized in that with the suction that blower fan produces flue gas being entered in the cooler cools off, cooled smoke enters the tar in the electrical tar precipitator seizure flue gas, through supercooling with remove defocused gas and enter reactor, with the alumina powder is pernicious gases such as the abundant mixing and absorption fluoride of adsorbent and flue gas, enter bagroom again and carry out gas, mixture separates, discharge isolated gas, the aluminium oxide that contains adsorbate separates with aluminium oxide, the aluminium oxide circulation utilizes once more, and the aluminium oxide collection that contains adsorbate enters collecting bin as the electrolytic aluminium raw material for standby.
A kind of carbon baking flue gas electric fishing and dry cleaning device, it is characterized in that device is mainly by dry bottom formula cooler, the electrically trapped tar oil deduster, reactor, bagroom, blower fan, flue is formed, be connected with roaster in end formula cooler inlet through the air inlet flue, dry bottom formula cooler outlet is connected with the electrical tar precipitator import, the electrical tar precipitator outlet is connected with Reactor inlet, reactor is provided with the alumina powder nozzle, the outlet of reactor is connected with the import of bagroom, the outlet flue of bagroom is connected with chimney, and flue is provided with blower fan.
Dry bottom formula cooler in carbon baking flue gas electric fishing and the dry cleaning device, it is characterized in that under the suction of blower fan, baking furnace fume enters dry bottom formula cooler from flue, its flue is provided with temperature sensor, dry bottom formula cooler top is provided with spray equipment, and spray equipment is connected with water pump with autocontrol valve.When surpassing design temperature from roaster tunnel gas temperature, temperature sensor provides signal, and the spray equipment in the dry bottom formula cooler sprays from top to bottom, and autocontrol valve control water yield size is lowered the temperature to flue gas.
Electrical tar precipitator of the present invention is provided with casing, tank ends is respectively equipped with the air inlet smoke box and the smoke box of giving vent to anger, give vent to anger and be provided with distribution grid in the smoke box, be furnished with smoke ventilator on the distribution grid, give vent to anger and be provided with the groove type plate of taking pore out of in the smoke box, be divided into two above process chambers in the casing, each process chamber all comprises one group of positive plate and minus plate, and positive plate is made up of pipe pole plate and plate plate, and minus plate is made up of cathode line, positive plate and minus plate are by entablature, lower plate is connected and fixed, process chamber top is electric device, and electric device is connected with minus plate with positive plate, and the process chamber bottom is provided with the tar ash bucket, ash bucket is provided with inside and outside two cover insulating tubes, and the tar ash bucket is provided with ash discharging hole.
Be provided with the multilayer distribution grid in the air inlet smoke box, be furnished with smoke ventilator on the distribution grid, make flue gas as far as possible evenly pass through electric field.Be equipped with temperature sensor in the electrical tar precipitator inlet, outlet smoke box, measure flue-gas temperature, carry out temperature difference contrast, judge whether electrical tar precipitator inside has burning through importing and exporting.If the temperature difference surpasses limit value, promptly working as the electrical tar precipitator outlet temperature sets value greater than inlet temperature, when catching fire in the electrical tar precipitator, sensor provides the steam annihilator in the signal enabling electrical tar precipitator automatically, by the high-pressure steam pipe ejection high steam that is installed in the electrical tar precipitator middle part, reduce flue-gas temperature, cause anaerobic environment to put out a fire; Close the high voltage electric field device in the electrical tar precipitator simultaneously, the safety of assurance equipment operation.The ash bucket of electrical tar precipitator bottom is provided with inside and outside two cover insulating tubes, and the tar in the ash bucket is incubated, and to improve its flowability, is convenient to reclaim.Positive plate in the electrical tar precipitator is made up of pipe pole plate and plate plate, saves great deal of steel than simple employing pipe pole plate, and minus plate is made up of cathode line.Entablature is fixed on positive plate and minus plate top, and the bottom is connected on the lower plate.When flue gas after being purified also will increase the flow of flue gas resistance by being arranged at the two-layer groove type plate of taking pore out of that is no less than in the smoke box of giving vent to anger during by electrical tar precipitator, reduce flowing velocity, play the effect of further gathering dust simultaneously.
Dry cleaning device in carbon baking flue gas electric fishing and the dry cleaning device, it is characterized in that the electrical tar precipitator efferent duct is connected to reactor, reactor is provided with the alumina powder nozzle, the reactor efferent duct is connected to bagroom, sack cleaner is provided with deashing device and carries out deashing, the top outlet of bagroom is provided with flue, which is provided with blower fan links to each other with chimney, a part of aluminium oxide in the ash bucket of bagroom bottom can be transported to reactor and utilize once more, and a part is transported to storage in the fluoro-containing alumina feed bin.
Technological process of the present invention is simple, first flue gas is purified thoroughly, do not produce secondary pollution, can reclaim the adsorbent aluminium oxide simultaneously and utilize, tar can be created added value, advanced technology, the automatic controlling level height effectively reduces the production run cost, economical rationality, remove flue dust efficient height, fume emission is better than discharging standards.
Description of drawings:
Fig. 1 is a process flow diagram of the present invention.
Fig. 2 is the schematic diagram of the dry bottom formula cooler among the present invention.
Fig. 3 is the schematic diagram of the electrical tar precipitator among the present invention.
Fig. 4 is the schematic diagram of the electrical tar precipitator oil storage system among the present invention.
Fig. 5 is the schematic diagram of the electrical tar precipitator anode system among the present invention.
Fig. 6 is the schematic diagram of the electrical tar precipitator cathod system among the present invention.
Fig. 7 is the schematic diagram of the electrical tar precipitator distribution grid among the present invention.
Fig. 8 is the schematic diagram of the electrical tar precipitator groove type plate among the present invention.
Mark among the figure: dry bottom formula cooler 1, electrical tar precipitator 2, bagroom 3, reactor 4, aluminum oxide warehouse 5 contains adsorbate aluminum oxide warehouse 6, blower fan 7, temperature sensor 8, spray equipment 9, air inlet smoke box 10, distribution grid 11, anode system 12, high steam shower 13, electric device 14, cathod system 15, groove type plate 16, the smoke box 17 of giving vent to anger, ash bucket 18, insulating tube 19, entablature 20, pipe pole plate 21, plate plate 22, lower plate 23, brace summer 24, porcelain pillar 25, incubator 26, support 27, dirt-proof boot 28, cathode line 29, ground floor distribution grid 31,32, the three layers of distribution grid 33 of second layer distribution grid, ground floor distribution grid suspention beam 34,35, the three layers of distribution grid suspention of second layer distribution grid suspention beam beam 36, groove type plate 37,38.
The specific embodiment:
Below in conjunction with accompanying drawing the utility model is described further:
Referring to Fig. 1, make flue gas enter cooling in the dry bottom formula cooler 1 by blower fan 7 air inducing suction, cooled smoke enters electrical tar precipitator 2, catches the tar in the flue gas.Flue gas through decoking enters reactor 4 and the abundant mixing and absorption pernicious gas of alumina powder, enter bagroom 3 again and carry out gas, mixture separation, discharge isolated gas, the aluminium oxide that contains adsorbate separates with aluminium oxide, the aluminium oxide circulation utilizes once more, and the aluminium oxide collection that contains adsorbate enters and contains adsorbate aluminum oxide warehouse 6 as the electrolytic aluminium raw material for standby.
Enter dry bottom formula cooler top referring to Fig. 2 baking furnace fume from flue, temperature sensor 8 is arranged on its flue, spray equipment 9 is arranged at dry bottom formula cooler top, when temperature sensor provides signal, a plurality of nozzle automatic sprays on the vavle shelf, automatic controlling system water yield size drops to below the design temperature flue-gas temperature, because temperature is higher in the dry bottom formula cooler, water mixes the flue bottom the formation spray pattern enters after supercooling with flue gas.
Referring to Fig. 3,4,5,6,7,8, flue gas through supercooling, enter by electrical tar precipitator air inlet smoke box 10, by the distribution grid in the air inlet smoke box 11, distribution grid has 3 layer 31,32,33, be fixed on the air inlet smoke box by suspention beam 34,35,36 respectively, be furnished with smoke ventilator on the plate, make flue gas as far as possible evenly pass through electric field.Be provided with temperature sensor in the smoke box of air inlet simultaneously 10, be used to measure flue-gas temperature through import.As discharge electrode, anode system 12 utilizes the high-voltage DC power supply of electric device 14 to set up high voltage electric field between its discharge electrode and dust collector pole as dust collector pole to electrical tar precipitator with cathod system 15.Be brace summer 24 above the porcelain pillar 25 in the electric device, the electric device outside is provided with incubator 26, and the bottom is a support 27, and is provided with dirt-proof boot 28, prevents that flue gas from entering in the electric device.When carbon baking flue gas enters electric field, its tar and dust particle are adsorbed by charged ion, form charged particle, under the effect of electric field force, charged tar and dust particle move to dust collector pole, and are adsorbed in the dust collector pole surface, and the tar particle that is adsorbed in the dust collector pole surface discharges electric charge, be adsorbed onto and flow to bottom ash bucket 18 by centralized collection along dust collector pole after to a certain degree forming oil droplet, reach Purge gas and reclaim the purpose of tar.The ash bucket 18 of electrical tar precipitator is provided with inside and outside two cover insulating tubes 19, keeps the tar temperature, improves the tar flowability, is convenient to reclaim.Positive plate 12 in the electrical tar precipitator is made up of with plate plate 22 pipe pole plate 21, saves great deal of steel than simple employing pipe pole plate, and entablature 20 is fixed on positive plate top, and the bottom is connected on the lower plate 23.Minus plate 15 is made up of cathode line 29.When flue gas after being purified also will be by being arranged at the groove type plate of taking pore out of 16 in the smoke box 17 of giving vent to anger during by electrical tar precipitator, groove type plate has 2 layer 37,38, increases the flow of flue gas resistance, reduces flowing velocity, plays the effect of further gathering dust simultaneously.Electrical tar precipitator is given vent to anger and also is provided with temperature sensor in the smoke box 17, measures the flue-gas temperature through outlet, carries out temperature difference contrast with the flue-gas temperature of import, and then judges whether electrical tar precipitator inside has burning.If surpass limit value, promptly working as the electrical tar precipitator outlet temperature sets value greater than inlet temperature, when catching fire in the electrical tar precipitator, sensor provides the steam annihilator in the signal enabling electrical tar precipitator automatically, high steam shower 13 spray high steams reduce flue-gas temperature, cause anaerobic environment to reach the purpose of fire extinguishing, close the high voltage electric field device in the electrical tar precipitator simultaneously, guarantee the security of operation of equipment.
Referring to Fig. 1, when flue gas removes defocused through 1 cooling of dry bottom formula cooler and electrical tar precipitator 2, enter the reactor 4 on the flue, with the alumina powder in the aluminum oxide warehouse 5 is that adsorbent enters the abundant mixing and absorption pernicious gas of flue gas in reactor 4 and the flue, enter bagroom 3, carry out gas again, the mixture separation process, isolated gas is through the discharging of the flue on the bagroom 3, contain the aluminium oxide of adsorbate and do not separate with the aluminium oxide that flue gas mixes, the aluminium oxide circulation utilizes once more, the aluminium oxide collection that contains adsorbate enters and contains adsorbate aluminum oxide warehouse 6, carry out gas, mixture separates, flue gas after being purified is directly discharged, and the aluminium oxide in the cloth bag control of dust does not mix capable of circulation the utilization once more and enters reactor 4 with flue gas.
Claims (7)
1. carbon baking flue gas electric fishing and dry cleaning method, the suction that it is characterized in that air-introduced machine makes flue gas enter cooling in the cooler, enter electrical tar precipitator through the flue gas of cooler cooling and catch tar in the flue gas, through supercooling with remove defocused gas and enter reactor, with the alumina powder is the abundant mixing and absorption pernicious gas of adsorbent and flue gas, enter bagroom again and carry out gas, mixture separation, flue gas is discharged by the gas outlet.
2. carbon baking flue gas electric fishing and dry cleaning device, it is characterized in that device is mainly by dry bottom formula cooler, the electrically trapped tar oil deduster, reactor, bagroom, blower fan, flue is formed, be connected with roaster through flue dry bottom formula cooler inlet, dry bottom formula cooler outlet is connected with the electrical tar precipitator import, the electrical tar precipitator outlet is connected with Reactor inlet, reactor is provided with the alumina powder nozzle, the outlet of reactor is connected with the import of bagroom, the outlet flue of bagroom is connected with chimney, and flue is provided with blower fan.
3. a kind of carbon baking flue gas electric fishing as claimed in claim 2 and dry cleaning device, it is characterized in that electrical tar precipitator is provided with casing, tank ends is respectively equipped with the air inlet smoke box and the smoke box of giving vent to anger, give vent to anger and be provided with distribution grid in the smoke box, be furnished with smoke ventilator on the distribution grid, give vent to anger and be provided with the groove type plate of taking pore out of in the smoke box, be divided into two above process chambers in the casing, each process chamber all comprises one group of positive plate and minus plate, positive plate is made up of pipe pole plate and plate plate, minus plate is made up of cathode line, positive plate and minus plate are connected and fixed by the entablature lower plate, and process chamber top is electric device, and electric device is connected with minus plate with positive plate, the process chamber bottom is provided with the tar ash bucket, and the tar ash bucket is provided with ash discharging hole.
4. a kind of carbon baking flue gas electric fishing as claimed in claim 3 and dry cleaning device, it is characterized in that in electrical tar precipitator air inlet smoke box, the smoke box of giving vent to anger, being respectively equipped with temperature sensor, be provided with the high steam shower in the electrical tar precipitator, the high steam shower is connected with electrical tar precipitator high steam pipeline outward, the high steam pipeline is provided with magnetic valve, and magnetic valve is connected with controller respectively with temperature sensor.
5. a kind of carbon baking flue gas electric fishing as claimed in claim 3 and dry cleaning device is characterized in that the ash bucket of electrical tar precipitator is provided with inside and outside two cover insulating tubes..
6. a kind of carbon baking flue gas electric fishing as claimed in claim 2 and dry cleaning device, it is characterized in that dry bottom formula cooler flue is provided with temperature sensor, dry bottom formula cooler top is provided with spray equipment, and temperature sensor is connected with water pump with autocontrol valve by the PLC spray equipment that links to each other with spray equipment.
7. a kind of carbon baking flue gas electric fishing as claimed in claim 2 and dry cleaning device, it is characterized in that electrical tar precipitator is connected with the pipeline of dry bottom formula cooler lower part outlet, efferent duct is connected to reactor, be connected to bagroom at last, sack cleaner is provided with deashing device and carries out deashing, the outlet of bagroom is provided with flue, which is provided with blower fan links to each other with chimney, a part of aluminium oxide in the ash bucket of bagroom bottom can be transported to reactor and utilize once more, and a part is transported to storage in the fluoro-containing alumina feed bin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810159188A CN101732938A (en) | 2008-11-26 | 2008-11-26 | Method and device for electric catching and dry-process purification of carbon baking flue gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810159188A CN101732938A (en) | 2008-11-26 | 2008-11-26 | Method and device for electric catching and dry-process purification of carbon baking flue gas |
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| CN101732938A true CN101732938A (en) | 2010-06-16 |
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| CN200810159188A Pending CN101732938A (en) | 2008-11-26 | 2008-11-26 | Method and device for electric catching and dry-process purification of carbon baking flue gas |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102755806A (en) * | 2012-07-17 | 2012-10-31 | 上海旌督机电科技有限公司 | Parasitic combined dust collector and operation method thereof |
| CN105195008A (en) * | 2015-10-23 | 2015-12-30 | 河北金科环保设备有限公司 | Process and equipment for flue gas roasting, adsorption desulfurization, dust removal and purification by adopting combination process |
| CN105214421A (en) * | 2014-06-27 | 2016-01-06 | 沈阳铝镁设计研究院有限公司 | A kind of administering method of baking flue gas |
| CN106152801A (en) * | 2015-04-23 | 2016-11-23 | 沈阳铝镁科技有限公司 | A kind of baking flue gas tar controlling device and method |
| CN106139792A (en) * | 2015-04-23 | 2016-11-23 | 沈阳铝镁科技有限公司 | A kind of baking flue gas governing system and administering method |
| CN106731407A (en) * | 2017-01-09 | 2017-05-31 | 高国纯 | A kind of carbon anode roasting gas cleaning minimum discharge system and technique |
| CN106731599A (en) * | 2016-12-14 | 2017-05-31 | 国源设计院有限公司 | A kind of flue spray dust remover |
| CN109157957A (en) * | 2018-10-26 | 2019-01-08 | 航天环境工程有限公司 | A kind of ultra-clean processing method of electrolytic aluminium carbon anode roasting flue gas and the system and application for implementing this method |
| CN109260638A (en) * | 2018-09-19 | 2019-01-25 | 广州广大气治理工程有限公司 | A kind of fire protection monitoring device and monitoring method for soot emissions processing system |
| CN110369132A (en) * | 2019-08-01 | 2019-10-25 | 福建德运科技有限公司 | Forming machine flue gas purification system |
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2008
- 2008-11-26 CN CN200810159188A patent/CN101732938A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102755806A (en) * | 2012-07-17 | 2012-10-31 | 上海旌督机电科技有限公司 | Parasitic combined dust collector and operation method thereof |
| CN102755806B (en) * | 2012-07-17 | 2016-04-20 | 上海旌督机电科技有限公司 | A kind of cleaner of parasitic type combination and operation method thereof |
| CN105214421A (en) * | 2014-06-27 | 2016-01-06 | 沈阳铝镁设计研究院有限公司 | A kind of administering method of baking flue gas |
| CN106152801A (en) * | 2015-04-23 | 2016-11-23 | 沈阳铝镁科技有限公司 | A kind of baking flue gas tar controlling device and method |
| CN106139792A (en) * | 2015-04-23 | 2016-11-23 | 沈阳铝镁科技有限公司 | A kind of baking flue gas governing system and administering method |
| CN106152801B (en) * | 2015-04-23 | 2019-03-01 | 沈阳铝镁科技有限公司 | A kind of baking flue gas tar controlling device and method |
| CN105195008A (en) * | 2015-10-23 | 2015-12-30 | 河北金科环保设备有限公司 | Process and equipment for flue gas roasting, adsorption desulfurization, dust removal and purification by adopting combination process |
| CN106731599A (en) * | 2016-12-14 | 2017-05-31 | 国源设计院有限公司 | A kind of flue spray dust remover |
| CN106731407A (en) * | 2017-01-09 | 2017-05-31 | 高国纯 | A kind of carbon anode roasting gas cleaning minimum discharge system and technique |
| CN109260638A (en) * | 2018-09-19 | 2019-01-25 | 广州广大气治理工程有限公司 | A kind of fire protection monitoring device and monitoring method for soot emissions processing system |
| CN109157957A (en) * | 2018-10-26 | 2019-01-08 | 航天环境工程有限公司 | A kind of ultra-clean processing method of electrolytic aluminium carbon anode roasting flue gas and the system and application for implementing this method |
| CN110369132A (en) * | 2019-08-01 | 2019-10-25 | 福建德运科技有限公司 | Forming machine flue gas purification system |
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Open date: 20100616 |