CN108392956A - A kind of system for desulfuration and denitration and method for coke oven flue gas - Google Patents

A kind of system for desulfuration and denitration and method for coke oven flue gas Download PDF

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Publication number
CN108392956A
CN108392956A CN201710064790.3A CN201710064790A CN108392956A CN 108392956 A CN108392956 A CN 108392956A CN 201710064790 A CN201710064790 A CN 201710064790A CN 108392956 A CN108392956 A CN 108392956A
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China
Prior art keywords
flue gas
ammonia
coke oven
sulfur dioxide
oven flue
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CN201710064790.3A
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Inventor
王永
王飞
袁玲
刘芳
胡绍伟
庞克亮
陈鹏
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Angang Steel Co Ltd
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Angang Steel Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/346Controlling the process
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/48Sulfur compounds
    • B01D53/50Sulfur oxides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • B01D53/8621Removing nitrogen compounds
    • B01D53/8625Nitrogen oxides
    • B01D53/8631Processes characterised by a specific device
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2251/00Reactants
    • B01D2251/20Reductants
    • B01D2251/206Ammonium compounds
    • B01D2251/2062Ammonia
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/02Other waste gases
    • B01D2258/0283Flue gases
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2259/00Type of treatment
    • B01D2259/12Methods and means for introducing reactants
    • B01D2259/122Gaseous reactants

Abstract

A kind of system for desulfuration and denitration for coke oven flue gas, including coke oven flue gas pipe, pollutant concentration monitor, sulfur dioxide absorber, bag filter, a heat exchanger, pollutant concentration detector, nox adsorber, booster fan, bypass valve, ammonia source, secondary heat exchanger and chimney.Flue gas is after a heat exchanger heats up, and interior mixed with ammonia generates ammonium salt in sulfur dioxide absorber;Enter nox adsorber progress denitration after capturing desulfurization by bag filter, reaction of nitrogen oxides generates nitrogen and water;Flue gas is by smoke stack emission after reaction.Another variants are that sulfur dioxide absorber and nox adsorber installation flue gas ammonia mixer, blowback cleaning device and low-temperature denitration catalyst to enable coke oven flue gas and ammonia to come into full contact with and mixing, and are realized cleaning and depositing dust.The present invention can prevent denitrating catalyst sulfur poisoning, reduce the replacement frequency of denitrating catalyst, extend the service life of denitrating catalyst, reduce operating cost.

Description

A kind of system for desulfuration and denitration and method for coke oven flue gas
Technical field
The invention belongs to environmental protection technical fields, and in particular to a kind of system for desulfuration and denitration and side for coke oven flue gas Method.
Background technology
The discharged nitrous oxides of all enterprise's Mechanical-coke Oven chimneys are less than from State Ministry of Environmental Protection requires on January in 2015 1 500mg/m3, sulfur dioxide (SO2) emissions are less than 50mg/m3, the region discharged nitrous oxides of certain special emission limits are less than 150mg/ m3, sulfur dioxide (SO2) emissions are less than 50mg/m3.The main heating source of China's coke oven heating is that blast furnace gas is mixed with a small amount of coke-stove gas Mixed mixed gas or pure coke-stove gas.It is less than especially for the discharged nitrous oxides standard of limit value region coke oven flue gas 150mg/m3, can not row up to standard by means such as waste gas circulation, heat stepwise, reduction fire path temperature, control coefficient of excess air It puts, it is necessary to could qualified discharge by the denitrating system of postposition.
Currently, the flue-gas denitration process of the industries such as electric power, cement, waste incineration is quite ripe, but it is not exclusively suitable For coke oven flue gas denitration, coke oven flue gas, which contains sulfur dioxide, can cause denitrating catalyst inactivation and poisoning, to reduce denitration Efficiency.Therefore traditional denitrating technique has been unable to meet coke oven flue gas denitration.
" a kind of coke oven flue gas denitration desulfurization and reheat system process unit " (application number 201410835364.1), takes elder generation Denitration is subsequently into heat exchanger, and desulfurization after cooling, flue gas after desulfurization reheating is entered smoke stack emission by heat smoke after denitration.It can be with It makes full use of plant area's waste ammonia liquor and fume waste heat to reach denitration desulfurization purpose, improves denitration desulfuration efficiency, reduce operating cost, keep away The problems such as exempting from system corrosion.But its deficiency is the sulfur dioxide in coke oven flue gas can be adsorbed on catalyst table in the denitration stage Face reduces the service life of catalyst, increases operating cost.
" a kind of low temperature coke oven flue gas desulfurization systems denitrating technique " (application number 201410088231.2), by defeated in flue It send and sprays into fluidised NaHCO in pipeline3Fine powder, overwhelming majority SO in dry removal flue gas2, while by denitrating catalyst structure For layer with except ammonia catalyst structure layer is used in combination, the NOx in efficient removal flue gases of cock oven, denitrating catalyst uses filter bag shape knot Structure.The remained ammonia of the process makes full use coke-oven plant, the technique being combined with SCR method denitrations using dry desulfurization, and will take off Denox catalyst is realized with except ammonia catalyst combines and carries out high-efficiency desulfurization denitration to low temperature coke oven flue gas.But the technique needs Desulfurizing agent is additionally added, the desulfurizing agent after desulfurization is also required to handle, and increases operating cost.The denitrating catalyst of filter bag shape is easy Particulate matter after being desulfurized, which blocks, influences denitration efficiency.
" a kind of coke oven flue gas desulphurization and denitration and the waste heat recovery integration side that application number 201510261427.1 provides Coke oven flue gas is entered heating furnace first and is heated to 300-400 DEG C by method ", is entered back into denitrification apparatus denitrification reducing agent and is taken off Denox catalyst removes the nitrogen oxides in flue gas;The flue gas that denitrification apparatus comes out recycles heat through waste-heat recovery device and is cooled to 100-150 DEG C, enter back into ammonia desulfuration equipment removing sulfur dioxide in flue gas.This method desulfurizing agent denitrfying agent is ammonia, is reduced Operation, maintenance cost.Heating furnace heat temperature raising, waste-heat recovery device are set, realizes higher denitration, desulfuration efficiency, substantially drops Low Coke-oven flue gas governing operating cost.But its technological process is first denitration desulfurization again, sulfur dioxide can make in denitrating catalyst Poison reduces catalyst service life, increases operating cost.
Invention content
The purpose of the present invention is in carrying out denitration sweetening process to coke oven flue gas, flue gas need not be heated again, from And the replacement frequency of denitrating catalyst is reduced, extend the service life of denitrating catalyst, reduces operating cost.
For this purpose, the technical solution that the present invention is taken is:
A kind of system for desulfuration and denitration for coke oven flue gas, including coke oven flue gas pipe, pollutant concentration monitor, titanium dioxide Sulphur absorber, bag filter, a heat exchanger, pollutant concentration detector, nox adsorber, booster fan, bypass Valve, ammonia source, secondary heat exchanger and chimney.
Coke oven flue gas pipe connects chimney by bypass valve all the way, and another way connects a heat exchanger, a heat exchanger front It is respectively equipped with pollutant concentration monitor, sulfur dioxide absorber and bag filter, rear portion passes sequentially through pollutant concentration inspection It surveys device, nox adsorber, booster fan and secondary heat exchanger to connect with chimney, ammonia source connects sulfur dioxide absorption all the way Device, another way are connected with nox adsorber.
The sulfur dioxide absorber washes dress equipped with flue gas inlet tube, ammonia imports pipe, flue gas ammonia mixer I, blowback Set I, door I and smoke outlet tube.
The nox adsorber is equipped with gas inlet, ammonia imports, flue gas ammonia mixer II, low-temperature denitration catalysis Agent, blowback cleaning device II, door II and exhanst gas outlet.
A kind of desulfurization denitration method for coke oven flue gas, desulphurization denitration process are:
Coke oven flue gas is improved purified flue-gas temperature by a heat exchanger, and will by pollutant concentration monitor The measurement of concetration of nitrogen oxides and sulfur dioxide in flue gas comes out;Thereafter enter in sulfur dioxide absorber, coke oven flue gas The ammonia provided with ammonia source in sulfur dioxide absorber mixes, and the mixed proportion of sulfur dioxide and ammonia is 1:(1.02~ 1.18), sulfur dioxide generates ammonium salt;It is captured by filter bag subsequently into bag filter;Coke oven flue gas after desulfurization enters nitrogen oxygen Compound absorber carries out denitration, and under denitrating catalyst effect, reaction of nitrogen oxides is generated nitrogen and water by ammonia;By reaction After coke oven flue gas afterwards is by booster fan and secondary heat exchanger, by smoke stack emission;Flue gas after desulphurization denitration is changed by secondary Hot device exchanges heat with the ammonia in ammonia source, improves ammonia temperature;Coke oven flue gas can be by bypass valve directly by smoke stack emission.
A kind of another variants of desulfurization denitration method for coke oven flue gas are:
Flue-gas temperature after desulfurization is increased to 160 DEG C or more by 240~280 DEG C of coke oven flue gas by a heat exchanger, Then entered in sulfur dioxide absorber by pollutant concentration monitor, setting flue gas ammonia mixes in sulfur dioxide absorber Device I, blowback cleaning device I, door I and smoke outlet tube, it is mixed that flue gas ammonia mixer I makes coke oven flue gas be come into full contact with ammonia It closes, blowback cleaning device I and door I open sulfur dioxide absorber, with the ammonium adhered to inside sulfur dioxide absorber easy to clean Salt;According to the data of sulfur dioxide in pollutant concentration monitor, ammonia that ammonia source generates by flue gas ammonia mixer I into Enter sulfur dioxide absorber, the ammonia of penetrating and the ratio of sulfur dioxide are (1.02~1.18):1, coke oven flue gas is in titanium dioxide It is mixed with ammonia in sulphur absorber, sulfur dioxide generates ammonium salt, is captured by filter bag subsequently into bag filter, bag filter It is designed as two-stage bag-type dust, undesulfured flue gas is made to enter denitrating system when preventing level-one cloth bag from breaking down;After desulfurization Coke oven flue gas enters nox adsorber, and flue gas ammonia mixer II, low-temperature denitration catalysis are installed in nox adsorber Agent, blowback cleaning device II, door II and exhanst gas outlet make the coke oven flue gas and ammonia after desulfurization by flue gas ammonia mixer II It is uniformly mixed, then the coke oven flue gas after desulfurization, which is reacted with ammonia under the action of low-temperature denitration catalyst, generates nitrogen and water, For cleaning internal structure, the dustiness after bag-type dust of the coke oven flue gas after desulfurization reduces for blowback cleaning device II and door II To 5mg/m3Below;Flue gas after desulfurization and denitrification reaction enters chimney by booster fan, the flue gas warp after desulphurization denitration The ammonia crossed in secondary heat exchanger and ammonia source exchanges heat, and improves ammonia temperature, reduces ammonia in desulphurization denitration and coke oven flue gas It mixes and makes the reduction of coke oven flue gas temperature, coke oven flue gas can be by bypass valve directly by smoke stack emission.
Beneficial effects of the present invention are:
The present invention is using ammonia as desulfurizing agent and denitrfying agent, using the thermal energy of coke oven flue gas itself, need not additionally by Flue gas heats again can meet denitration condition;Denitration again after coke oven flue gas elder generation desulfurization and dedusting is taken simultaneously, it can anti-anti-avulsion Denox catalyst sulfur poisoning reduces the replacement frequency of denitrating catalyst, extends the service life of denitrating catalyst, reduce operation at This, is particularly suitable for the denitration desulfurization of coke oven flue gas.
Description of the drawings
Fig. 1 is coke oven flue gas system for desulfuration and denitration structural schematic diagram;
Fig. 2 is sulfur dioxide absorber structure schematic diagram;
Fig. 3 is nox adsorber structural schematic diagram.
In figure:Pollutant concentration monitor 1, sulfur dioxide absorber 2, bag filter 3, heat exchangers 4, a pollutants Concentration detector 5, nox adsorber 6, booster fan 7, bypass valve 8, ammonia source 9, secondary heat exchanger 10, chimney 11, coke Kiln gas pipe 12, flue gas inlet tube 13, flue gas ammonia mixer I 14, ammonia imports pipe 15, smoke outlet tube 16, door I 17, Blowback cleaning device I 18, gas inlet 19, ammonia imports 20, flue gas ammonia mixer II 21, low-temperature denitration catalyst 22, door II 23, exhanst gas outlet 24, blowback cleaning device II 25.
Specific implementation mode
The present invention is used for the system for desulfuration and denitration of coke oven flue gas, including pollutant concentration monitor 1, sulfur dioxide absorber 2,3, heat exchangers 4, pollutant concentration detector 5, nox adsorber 6, booster fan 7, bypass valves of bag filter 8, ammonia source 9, secondary heat exchanger 10, chimney 11 and coke oven flue gas pipe 12.
12 1 tunnel of coke oven flue gas pipe connects chimney 11 by bypass valve 8, and another way connects a heat exchanger 4, primary to exchange heat 4 front of device is respectively equipped with pollutant concentration monitor 1, sulfur dioxide absorber 2 and bag filter 3,4 rear portion of heat exchanger Pollutant concentration detector 5, nox adsorber 6, booster fan 7 and secondary heat exchanger 10 is passed sequentially through with chimney 11 to connect It connects;9 one tunnel of ammonia source connects sulfur dioxide absorber 2, and another way is connected with nox adsorber 6.
Desulphurization denitration process using above-mentioned coke oven flue gas system for desulfuration and denitration is:
Coke oven flue gas is improved purified flue-gas temperature by a heat exchanger 4, and passes through pollutant concentration monitor 1 The measurement of concetration of nitrogen oxides and sulfur dioxide in flue gas is come out to enter in sulfur dioxide absorber 2 thereafter, coke oven cigarette The ammonia that gas provides in sulfur dioxide absorber 2 with ammonia source 9 mixes, and the mixed proportion of sulfur dioxide and ammonia is 1: (1.02~1.18), sulfur dioxide generate ammonium salt;It is captured by filter bag subsequently into bag filter 3;Coke oven flue gas after desulfurization Into nox adsorber 6 carry out denitration, denitrating catalyst effect under, ammonia by reaction of nitrogen oxides generate nitrogen with Water;After coke oven flue gas after reaction is by booster fan 7 and secondary heat exchanger 10, discharged by chimney 11;After desulphurization denitration Flue gas exchange heat by the ammonia in secondary heat exchanger 10 and ammonia source 9, improve ammonia temperature;Coke oven flue gas can pass through bypass valve 8 are directly discharged by chimney 11.
The present invention another variants be:By newly-designed sulfur dioxide absorber 2 and 6 structure of nox adsorber, Realize another desulphurization denitration process.Specially:
Sulfur dioxide absorber 2 is equipped with flue gas inlet tube 13, flue gas ammonia mixer I 14, ammonia imports pipe 15, flue gas Outlet 16, door I 17, blowback cleaning device I 18.Nox adsorber 6 is equipped with gas inlet 19, ammonia imports 20, cigarette Gas ammonia gas mixer II 21, low-temperature denitration catalyst 22, door II 23, exhanst gas outlet 24, blowback cleaning device II 25.
The desulphurization denitration process of the variants is:
Flue-gas temperature after desulfurization is increased to 160 DEG C or more by 240~280 DEG C of coke oven flue gas by a heat exchanger 4, Then entered in sulfur dioxide absorber 2 by pollutant concentration monitor 1, the flue gas ammonia being arranged in sulfur dioxide absorber 2 Gas mixer I makes coke oven flue gas come into full contact with ammonia to mix, and blowback cleaning device I 18 and door I 17 are opened sulfur dioxide and absorbed Device 2, the ammonium salt adhered to 2 inside of sulfur dioxide absorber easy to clean.According to sulfur dioxide in pollutant concentration monitor 1 Data, the ammonia that ammonia source 9 generates enter sulfur dioxide absorber 2, the ammonia of penetrating and two by flue gas ammonia mixer I 14 The ratio of sulfur oxide is (1.02~1.18):1, coke oven flue gas mixes in sulfur dioxide absorber 2 with ammonia, sulfur dioxide life It at ammonium salt, is captured by filter bag subsequently into bag filter 3, bag filter 3 is designed as two-stage bag-type dust, prevents level-one cloth Bag makes undesulfured flue gas enter denitrating system when breaking down.Coke oven flue gas after desulfurization enters nox adsorber 6, nitrogen Oxide absorber 6 makes the coke oven flue gas after desulfurization be uniformly mixed with ammonia by flue gas ammonia mixer II 21, then desulfurization Coke oven flue gas afterwards, which is reacted with ammonia under the action of low-temperature denitration catalyst 22, generates nitrogen and water, II 25 He of blowback cleaning device For door II 23 for cleaning internal structure, the dustiness after bag-type dust of the coke oven flue gas after desulfurization is reduced to 5mg/m3With Under.Flue gas after desulfurization and denitrification reaction enters chimney 11 by booster fan 7;Flue gas after desulphurization denitration is changed by secondary Ammonia in hot device 10 and ammonia source 9 exchanges heat, and improves ammonia temperature, reduce ammonia mixed with coke oven flue gas in desulphurization denitration and Make the reduction of coke oven flue gas temperature, coke oven flue gas that can directly be discharged by chimney 11 by bypass valve 8.Ammonia source 9 connects titanium dioxide Sulphur absorber 2 and nox adsorber 6, ammonia source 9 can be the objects that ammonium hydroxide, urea etc. can stablize the source for providing ammonia Matter.
Embodiment coke oven flue gas parameter is as shown in the table:

Claims (3)

1. a kind of system for desulfuration and denitration for coke oven flue gas, which is characterized in that monitored including coke oven flue gas pipe, pollutant concentration Device, sulfur dioxide absorber, bag filter, a heat exchanger, pollutant concentration detector, nox adsorber, supercharging Wind turbine, bypass valve, ammonia source, secondary heat exchanger and chimney;
Coke oven flue gas pipe connects chimney by bypass valve all the way, and another way connects a heat exchanger, a heat exchanger front difference Equipped with pollutant concentration monitor, sulfur dioxide absorber and bag filter, rear portion pass sequentially through pollutant concentration detector, Nox adsorber, booster fan and secondary heat exchanger are connect with chimney, and ammonia source connects sulfur dioxide absorber all the way, separately It is connected all the way with nox adsorber.
2. a kind of method using the system for desulfuration and denitration for being used for coke oven flue gas described in claim 1, which is characterized in that its desulfurization Denitrification process is:
Coke oven flue gas is improved purified flue-gas temperature by a heat exchanger, and by pollutant concentration monitor by flue gas In nitrogen oxides and the measurement of concetration of sulfur dioxide come out;Thereafter enter in sulfur dioxide absorber, coke oven flue gas is two The ammonia provided with ammonia source in absorption of sulfur oxides device mixes, and the mixed proportion of sulfur dioxide and ammonia is 1:(1.02~ 1.18), sulfur dioxide generates ammonium salt;It is captured by filter bag subsequently into bag filter;Coke oven flue gas after desulfurization enters nitrogen oxygen Compound absorber carries out denitration, and under denitrating catalyst effect, reaction of nitrogen oxides is generated nitrogen and water by ammonia;By reaction After coke oven flue gas afterwards is by booster fan and secondary heat exchanger, by smoke stack emission;Flue gas after desulphurization denitration is changed by secondary Hot device exchanges heat with the ammonia in ammonia source, improves ammonia temperature;Coke oven flue gas can be by bypass valve directly by smoke stack emission.
3. a kind of method for the system for desulfuration and denitration of coke oven flue gas as described in claim 1, which is characterized in that its desulfurization is de- Nitre process is:
Flue-gas temperature after desulfurization is increased to 160 DEG C or more by 240~280 DEG C of coke oven flue gas by a heat exchanger, then Entered in sulfur dioxide absorber by pollutant concentration monitor, the interior setting flue gas ammonia mixer I of sulfur dioxide absorber, Blowback cleaning device I, door I and smoke outlet tube, flue gas ammonia mixer I make coke oven flue gas come into full contact with ammonia to mix, instead Bubbling device I and door I open sulfur dioxide absorber, with the ammonium salt adhered to inside sulfur dioxide absorber easy to clean;Root According to the data of sulfur dioxide in pollutant concentration monitor, the ammonia that ammonia source generates enters two by flue gas ammonia mixer I Absorption of sulfur oxides device, the ammonia of penetrating and the ratio of sulfur dioxide are (1.02~1.18):1, coke oven flue gas is inhaled in sulfur dioxide It receives and is mixed with ammonia in device, sulfur dioxide generates ammonium salt, is captured by filter bag subsequently into bag filter, bag filter design For two-stage bag-type dust, undesulfured flue gas is made to enter denitrating system when preventing level-one cloth bag from breaking down;Coke oven after desulfurization Flue gas enters nox adsorber, installation flue gas ammonia mixer II in nox adsorber, low-temperature denitration catalyst, anti- Bubbling device II, door II and exhanst gas outlet make the coke oven flue gas after desulfurization be mixed with ammonia by flue gas ammonia mixer II Uniformly, then the coke oven flue gas after desulfurization reacts generation nitrogen and water, blowback with ammonia under the action of low-temperature denitration catalyst For cleaning internal structure, the dustiness after bag-type dust of the coke oven flue gas after desulfurization is reduced to for cleaning device II and door II 5mg/m3Below;Flue gas after desulfurization and denitrification reaction enters chimney by booster fan, and the flue gas after desulphurization denitration passes through Secondary heat exchanger exchanges heat with the ammonia in ammonia source, improves ammonia temperature, and it is mixed with coke oven flue gas in desulphurization denitration to reduce ammonia It closes and makes the reduction of coke oven flue gas temperature, coke oven flue gas can be by bypass valve directly by smoke stack emission.
CN201710064790.3A 2017-02-05 2017-02-05 A kind of system for desulfuration and denitration and method for coke oven flue gas Pending CN108392956A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111298619A (en) * 2020-02-27 2020-06-19 四川恒泰环境技术有限责任公司 Electric smelting furnace flue gas treatment device and method
CN112403232A (en) * 2019-11-05 2021-02-26 中冶长天国际工程有限责任公司 Process method and device for cooperatively purifying multiple pollutants in flue gas

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11114366A (en) * 1997-10-01 1999-04-27 Sumitomo Heavy Ind Ltd Treatment of released gas in waste gas treating device for refuse incinerator
JP2003126654A (en) * 2001-10-19 2003-05-07 Sumitomo Heavy Ind Ltd Flue gas treatment apparatus
CN101422691A (en) * 2008-11-20 2009-05-06 武汉凯迪电力环保有限公司 Multi-pollutant removing technique and device of fuel coal smoke
CN102794080A (en) * 2012-08-30 2012-11-28 北京国电清新环保技术股份有限公司 Method and device for comprehensively treating pollutants jointly aiming at waste heat recovery of flue gas in coke oven
CN103028300A (en) * 2012-11-23 2013-04-10 广东依科电力技术有限公司 Fume cleaning and desulfurizing system and working method thereof
CN103816796A (en) * 2014-03-11 2014-05-28 中冶焦耐工程技术有限公司 Low-temperature coke oven flue waste gas desulphurization and denitration process
CN104923046A (en) * 2015-05-20 2015-09-23 江苏新世纪江南环保股份有限公司 Coke oven flue gas desulfurization, denitration and waste heat recovery integrated method
CN105344236A (en) * 2015-11-13 2016-02-24 西南化工研究设计院有限公司 An integrated desulfurization-denitrification-dedusting process for coke oven flue gas
CN105688566A (en) * 2016-03-02 2016-06-22 钢研晟华工程技术有限公司 Desulfurization and denitrification device and method for sintering flue gas
CN205461790U (en) * 2016-02-17 2016-08-17 中国科学院过程工程研究所 A SOx/NOx control device for coke oven gas cleaning
CN106268230A (en) * 2016-08-18 2017-01-04 山东铁雄冶金科技有限公司 A kind of waste heat of coke-oven flue gas reclaim and purify system and technique

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11114366A (en) * 1997-10-01 1999-04-27 Sumitomo Heavy Ind Ltd Treatment of released gas in waste gas treating device for refuse incinerator
JP2003126654A (en) * 2001-10-19 2003-05-07 Sumitomo Heavy Ind Ltd Flue gas treatment apparatus
CN101422691A (en) * 2008-11-20 2009-05-06 武汉凯迪电力环保有限公司 Multi-pollutant removing technique and device of fuel coal smoke
CN102794080A (en) * 2012-08-30 2012-11-28 北京国电清新环保技术股份有限公司 Method and device for comprehensively treating pollutants jointly aiming at waste heat recovery of flue gas in coke oven
CN103028300A (en) * 2012-11-23 2013-04-10 广东依科电力技术有限公司 Fume cleaning and desulfurizing system and working method thereof
CN103816796A (en) * 2014-03-11 2014-05-28 中冶焦耐工程技术有限公司 Low-temperature coke oven flue waste gas desulphurization and denitration process
CN104923046A (en) * 2015-05-20 2015-09-23 江苏新世纪江南环保股份有限公司 Coke oven flue gas desulfurization, denitration and waste heat recovery integrated method
CN105344236A (en) * 2015-11-13 2016-02-24 西南化工研究设计院有限公司 An integrated desulfurization-denitrification-dedusting process for coke oven flue gas
CN205461790U (en) * 2016-02-17 2016-08-17 中国科学院过程工程研究所 A SOx/NOx control device for coke oven gas cleaning
CN105688566A (en) * 2016-03-02 2016-06-22 钢研晟华工程技术有限公司 Desulfurization and denitrification device and method for sintering flue gas
CN106268230A (en) * 2016-08-18 2017-01-04 山东铁雄冶金科技有限公司 A kind of waste heat of coke-oven flue gas reclaim and purify system and technique

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112403232A (en) * 2019-11-05 2021-02-26 中冶长天国际工程有限责任公司 Process method and device for cooperatively purifying multiple pollutants in flue gas
CN111298619A (en) * 2020-02-27 2020-06-19 四川恒泰环境技术有限责任公司 Electric smelting furnace flue gas treatment device and method

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