CN111895799A - Heating furnace waste gas multi-pollutant cooperative treatment system - Google Patents
Heating furnace waste gas multi-pollutant cooperative treatment system Download PDFInfo
- Publication number
- CN111895799A CN111895799A CN202010863751.1A CN202010863751A CN111895799A CN 111895799 A CN111895799 A CN 111895799A CN 202010863751 A CN202010863751 A CN 202010863751A CN 111895799 A CN111895799 A CN 111895799A
- Authority
- CN
- China
- Prior art keywords
- soot
- air
- heat exchanger
- heating furnace
- purification system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 40
- 239000002912 waste gas Substances 0.000 title claims abstract description 23
- 239000003344 environmental pollutant Substances 0.000 title claims abstract description 15
- 239000004071 soot Substances 0.000 claims abstract description 46
- 238000000746 purification Methods 0.000 claims abstract description 44
- 239000000779 smoke Substances 0.000 claims abstract description 44
- 239000003546 flue gas Substances 0.000 claims abstract description 28
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 12
- 230000023556 desulfurization Effects 0.000 claims abstract description 12
- 239000000428 dust Substances 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 238000010531 catalytic reduction reaction Methods 0.000 claims abstract description 3
- 239000007789 gas Substances 0.000 claims description 14
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 6
- 229910021529 ammonia Inorganic materials 0.000 claims description 3
- 230000003197 catalytic effect Effects 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 abstract description 20
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 12
- 238000011084 recovery Methods 0.000 abstract description 6
- 239000002918 waste heat Substances 0.000 abstract description 6
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 12
- 239000003245 coal Substances 0.000 description 9
- 230000007613 environmental effect Effects 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000003009 desulfurizing effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/504—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8631—Processes characterised by a specific device
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biomedical Technology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chimneys And Flues (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a heating furnace waste gas multi-pollutant cooperative treatment system. The system comprises a soot purification system and an air-smoke purification system, wherein the soot purification system and the air-smoke purification system respectively comprise an SCR (selective catalytic reduction) denitration reactor, a desulfurization reaction tower and a bag type dust collector; the front end of a flue gas inlet of an SCR denitration reactor in the soot purification system is connected with a soot primary heat exchanger and a soot secondary heat exchanger through pipelines, and the soot secondary heat exchanger is connected with an air heating furnace; the front end of a flue gas inlet of an SCR denitration reactor in the air-flue purification system is connected with an air-flue primary heat exchanger and an air mixing device through pipelines, and the air mixing device is connected with a coal-flue secondary heat exchanger. The system can effectively realize synchronous purification of waste gas of the heating furnace, waste heat recovery and combined temperature rise; the system has high purification efficiency, can effectively remove sulfur dioxide, nitrogen oxide and particulate matters in the waste gas at the same time, and can completely meet the requirements of new standard emission limit values or ultra-low emission indexes.
Description
Technical Field
The invention belongs to the technical field of industrial flue gas pollution prevention and control, relates to a heating furnace waste gas multi-pollutant cooperative treatment system, and particularly relates to a steel rolling heating furnace waste gas purification system.
Background
The heating furnace is a reprocessing processing device for heating materials or workpieces, and is also a device for heating the materials or the workpieces.
The waste gas generated after the gas of the heating furnace is combusted mainly comprises SO2, NOx, smoke dust and the like, pollutants are continuously discharged in an organized overhead point source, and the pollution to the atmospheric environment due to the large waste gas discharge amount is not negligible.
In 2019, the department of ecological environment department in 4 months, the department of reform and commission and the like jointly release 'opinions about promoting and implementing ultra-low emission in the steel industry', and the emission indexes of smoke pollutants generated by a heating furnace are required: the standard oxygen content is 8%, and the hourly mean emission concentrations of particulate matters, sulfur dioxide and nitrogen oxides are respectively not higher than 10, 50 and 200 mg/cubic meter.
As mentioned above, the smoke temperature generated by the steel rolling heating furnace is 80-110 ℃, and the concentration of particulate matters is less than 100mg/m3、SO2The concentration is more than 300mg/m3NOx concentration > 500mg/m3The heating furnace smoke is discharged through a coal smoke chimney and an empty smoke chimney respectively, wherein the coal smoke contains CO explosive gas.
The literature review shows that the prior domestic heating furnace NOx adopts a circulating flue gas low-nitrogen combustion technology, but the NOx can not meet the national environmental protection emission requirement and is lack of a process technology for treating particulate matters and sulfur dioxide.
Disclosure of Invention
The invention aims to provide a heating furnace waste gas multi-pollutant cooperative treatment system, and provides a combined heating mode aiming at the smoke characteristics of a steel rolling heating furnace, namely, the smoke on the soot side is heated firstly, and meanwhile, the hot air which heats the smoke on the soot side is used for carrying out mixed heating mode on the smoke on the soot side so as to meet the new environmental standard requirement or the ultra-low emission requirement.
The technical solution of the invention is as follows: a heating furnace waste gas multi-pollutant cooperative treatment system comprises a soot purification system and an air-smoke purification system, wherein the air-smoke purification system respectively comprises an SCR (selective catalytic reduction) denitration reactor, a desulfurization reaction tower and a bag type dust remover; the front end of a flue gas inlet of an SCR denitration reactor in the soot purification system is connected with a soot primary heat exchanger and a soot secondary heat exchanger through pipelines, and the soot secondary heat exchanger is connected with an air heating furnace; the front end of a flue gas inlet of an SCR denitration reactor in the air-flue gas purification system is connected with an air-flue gas primary heat exchanger and an air mixing device through pipelines, and the air mixing device is connected with a coal-flue gas secondary heat exchanger; the hot blast stove is mainly used for heating coal smoke and air smoke to meet the SCR denitration temperature; high-temperature air generated by the hot blast stove firstly exchanges heat with the soot indirectly and then is directly mixed with the air and the soot in a mixing device to be heated; the two sets of purification systems run simultaneously and do not interfere with each other, so that safety is ensured.
According to the embodiment of the invention, a clean flue gas outlet of the bag type dust collector is connected with an induced draft fan and a chimney; the induced draft fan provides power for the waste gas purification system, and the fan control can adopt conventional control or variable frequency control as required.
According to the embodiment of the invention, the SCR denitration reactionThe reactor comprises a catalytic reactor, an ammonia injection grid and a static mixer, wherein the SCR denitration reactor is used for treating NO in the exhaust gasxAnd removing.
According to an embodiment of the present invention, the bag filter is a straight-through bag filter, a pre-charged bag filter or an electric-bag composite bag filter; the bag type dust collector mainly comprises a filter bag cage, a blowing device, a box body, an ash bucket and the like, is used for efficiently removing particulate matters, ensures low-concentration emission of the particulate matters, and meets the requirement of environmental protection.
According to the embodiment of the invention, the first-stage soot heat exchanger, the second-stage soot heat exchanger and the first-stage air-smoke heat exchanger are in a gas-gas indirect heat exchange mode, the heat exchangers are plate type, heat pipe type or tube type, and the heat exchangers have the function of waste heat recovery.
The desulfurization reaction tower sprays desulfurizer to SO in the reaction tower2The high-efficiency removal is carried out, the low-concentration emission of sulfur dioxide is ensured, and the environmental protection requirement is met; different dry or semi-dry desulfurization processes (including but not limited to calcium process, sodium-alkali process, etc.) can be adopted according to different working conditions.
The technical route of the invention is as follows: due to the characteristics of the flue gas of the heating furnace, a coal smoke purification system and an air smoke purification system are adopted, and each system adopts SCR denitration and dry (or semi-dry) desulfurization to efficiently remove nitrogen oxides, sulfur dioxide and particulate matters from the flue gas, purify the flue gas and discharge the flue gas after reaching the standard; a heat exchanger is adopted for cooling and heat energy recovery and utilization; the coal smoke and the air smoke are heated jointly, namely, the high-temperature air generated by the hot blast stove heats the coal smoke indirectly and then is directly mixed with the air smoke to heat.
The system of the invention is characterized by comprising three loops of waste gas purification, waste heat recovery and combined temperature rise.
The purification system of the invention is as follows: the combustion waste gas of the heating furnace is divided into soot and air smoke, and the soot and the air smoke are respectively provided with 1 set of purification systems, namely a soot purification system and an air smoke purification system, because the soot contains CO explosive gas.
A soot purification system: the soot firstly enters the primary heat exchanger and the secondary heat exchanger, and the flue gas firstly enters the SCR denitration deviceFor NO in exhaust gasxRemoving, and desulfurizing by dry (or semi-dry) method to obtain SO2And removing, namely removing the particles in the waste gas by a bag type dust collector, and introducing the purified flue gas into a chimney by an induced draft fan to be discharged at high altitude.
Empty cigarette clean system: empty smoke firstly enters a first-stage heat exchanger, is mixed to raise the temperature and then enters an SCR denitration device to remove NO in the waste gasxRemoving, and desulfurizing by dry (or semi-dry) method to obtain SO2And removing, namely removing the particles in the waste gas by a bag type dust collector, and introducing the purified flue gas into a chimney by an induced draft fan to be discharged at high altitude.
The purification system of the invention is characterized in that: a combined heating process is adopted. Due to the characteristics of the flue gas of the heating furnace, the CO concentration in the flue gas at the soot side is about 30000ppm, and can reach 70000ppm at the highest, so that the flue gas can not be heated by directly mixing hot air with the flue gas, and only an indirect heat exchange heating mode can be adopted to heat the flue gas by using a heat exchanger; the hot air after the temperature of the smoke at the soot side is raised is directly mixed with the smoke at the air smoke side, so that the aim of comprehensively utilizing heat energy of the soot and the air smoke is fulfilled.
The invention has the beneficial effects that: the system can effectively realize synchronous purification of waste gas of the heating furnace, waste heat recovery and combined temperature rise; the system has high purification efficiency, and can effectively remove sulfur dioxide, nitrogen oxide and particulate matters in the waste gas simultaneously to ensure that the discharged SO2The concentration is lower than 30mg/m3，NOxThe concentration is less than 50mg/m3The particles are less than 10mg/m3Completely meet the requirements of new standard emission limit values or ultra-low emission indexes; the system has the remarkable characteristics of waste heat utilization, energy conservation, consumption reduction, low operation cost, safety, reliability and the like, and the temperature of the waste gas is reduced to 130-150 ℃ through flue gas heat exchange; the system adopts combined heating, the SCR denitration temperature of the soot and the empty smoke can be effectively met, and the safe and reliable operation of the soot purification system can be ensured; the SCR denitration method has the advantages of high denitration efficiency, energy consumption saving, small occupied area, low operation cost and the like; the dry (or semi-dry) desulfurization method has the advantages of high desulfurization efficiency, no wastewater, simple operation, low resistance, small land occupation and the like.
Drawings
FIG. 1 is a system for the cooperative treatment of multiple pollutants in the exhaust gas of a heating furnace.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, a heating furnace exhaust gas multi-pollutant cooperative treatment system comprises a soot purification system and an air-smoke purification system, wherein the soot purification system and the air-smoke purification system respectively comprise an SCR denitration reactor, a desulfurization reaction tower and a bag type dust collector; the front end of a flue gas inlet of an SCR denitration reactor in the soot purification system is connected with a soot primary heat exchanger and a soot secondary heat exchanger through pipelines, and the soot secondary heat exchanger is connected with an air heating furnace; the front end of a flue gas inlet of an SCR denitration reactor in the air-flue purification system is connected with an air-flue primary heat exchanger and an air mixing device through pipelines, and the air mixing device is connected with a coal-flue secondary heat exchanger.
As shown in figure 1, the two purification systems of the soot purification system and the air-smoke purification system run simultaneously and do not interfere with each other, so that the safety is ensured.
The SCR denitration reactor comprises a catalytic reactor, an ammonia injection grid and a static mixer and is used for treating NO in the exhaust gasxAnd (4) removing.
The desulfurization reaction tower sprays desulfurizer to SO in the reaction tower2The high-efficiency removal is carried out, the low-concentration emission of sulfur dioxide is ensured, and the environmental protection requirement is met; different dry or semi-dry desulfurization processes (including but not limited to calcium process, sodium-alkali process, etc.) can be adopted according to different working conditions.
The bag type dust collector mainly comprises a filter bag cage, a blowing device, a box body, an ash bucket and the like, and is used for efficiently removing particulate matters, ensuring low-concentration discharge of the particulate matters and meeting the requirement of environmental protection; bag house collectors include, but are not limited to, straight through bag house collectors, pre-charged bag house filters, electro-bag house collectors, and the like.
The coal smoke primary heat exchanger, the coal smoke secondary heat exchanger and the air smoke primary heat exchanger are in a gas-gas indirect heat exchange mode, and the heat exchangers are plate type, heat pipe type or tube type; the heat exchanger has the function of waste heat recovery.
The induced draft fan provides power for the waste gas purification system, and the fan control can adopt conventional control or variable frequency control as required.
The hot blast stove is mainly used for heating coal smoke and air smoke to meet the SCR denitration temperature; the high-temperature air generated by the hot blast stove firstly exchanges heat with the soot indirectly and then is mixed with the air and the soot directly in the mixing device for heating.
The above detailed description of the embodiments with reference to the drawings is only a preferred embodiment of the present invention, however, the present invention is not limited to the details of the above embodiments, and any modifications, substitutions within the spirit and principle of the present invention are possible; such as dry or semi-dry desulfurization processes (including but not limited to calcium, sodium-base, etc.) are within the scope of the present invention.
Claims (5)
1. A heating furnace waste gas multi-pollutant cooperative treatment system is characterized by comprising a soot purification system and an air-smoke purification system, wherein the soot purification system and the air-smoke purification system respectively comprise an SCR (selective catalytic reduction) denitration reactor, a desulfurization reaction tower and a bag type dust collector; the front end of a flue gas inlet of an SCR denitration reactor in the soot purification system is connected with a soot primary heat exchanger and a soot secondary heat exchanger through pipelines, and the soot secondary heat exchanger is connected with an air heating furnace; the front end of a flue gas inlet of an SCR denitration reactor in the air-flue purification system is connected with an air-flue primary heat exchanger and an air mixing device through pipelines, and the air mixing device is connected with a coal-flue secondary heat exchanger.
2. The heating furnace waste gas multi-pollutant cooperative treatment system according to claim 1, wherein a clean flue gas outlet of the bag type dust collector is connected with an induced draft fan and a chimney.
3. The heating furnace exhaust gas multi-pollutant cooperative treatment system according to claim 1, wherein the SCR denitration reactor comprises a catalytic reactor, an ammonia injection grid and a static mixer.
4. The heating furnace exhaust gas multi-pollutant cooperative treatment system according to claim 1, wherein the bag filter is a straight-through bag filter, a pre-charged bag filter or an electric bag composite bag filter.
5. The heating furnace exhaust gas multi-pollutant cooperative treatment system according to claim 1, wherein the first-stage soot heat exchanger, the second-stage soot heat exchanger and the first-stage air-smoke heat exchanger are in a gas-gas indirect heat exchange mode, and the heat exchangers are plate type, heat pipe type or tube type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010863751.1A CN111895799A (en) | 2020-08-25 | 2020-08-25 | Heating furnace waste gas multi-pollutant cooperative treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010863751.1A CN111895799A (en) | 2020-08-25 | 2020-08-25 | Heating furnace waste gas multi-pollutant cooperative treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111895799A true CN111895799A (en) | 2020-11-06 |
Family
ID=73225383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010863751.1A Pending CN111895799A (en) | 2020-08-25 | 2020-08-25 | Heating furnace waste gas multi-pollutant cooperative treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111895799A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113877419A (en) * | 2021-09-16 | 2022-01-04 | 上海嘉德环境能源科技有限公司 | Low-temperature flue gas desulfurization and denitrification system and method for heat accumulating type steel rolling heating furnace |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209630986U (en) * | 2019-01-18 | 2019-11-15 | 浙江蓝天求是环保股份有限公司 | A kind of low-temperature flue gas mixing reheating denitration coordinated desulfurization system |
| CN111495186A (en) * | 2020-06-02 | 2020-08-07 | 北京赛博宇科技发展有限公司 | Flue gas heat exchange heating desulfurization and denitrification system of hot rolled steel heat accumulating type heating furnace |
| CN212431808U (en) * | 2020-08-25 | 2021-01-29 | 中钢集团天澄环保科技股份有限公司 | Heating furnace waste gas multi-pollutant cooperative treatment system |
-
2020
- 2020-08-25 CN CN202010863751.1A patent/CN111895799A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209630986U (en) * | 2019-01-18 | 2019-11-15 | 浙江蓝天求是环保股份有限公司 | A kind of low-temperature flue gas mixing reheating denitration coordinated desulfurization system |
| CN111495186A (en) * | 2020-06-02 | 2020-08-07 | 北京赛博宇科技发展有限公司 | Flue gas heat exchange heating desulfurization and denitrification system of hot rolled steel heat accumulating type heating furnace |
| CN212431808U (en) * | 2020-08-25 | 2021-01-29 | 中钢集团天澄环保科技股份有限公司 | Heating furnace waste gas multi-pollutant cooperative treatment system |
Non-Patent Citations (1)
| Title |
|---|
| 顾璠等: "燃烧学基础", 31 August 2019, 东南大学出版社, pages: 284 - 285 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113877419A (en) * | 2021-09-16 | 2022-01-04 | 上海嘉德环境能源科技有限公司 | Low-temperature flue gas desulfurization and denitrification system and method for heat accumulating type steel rolling heating furnace |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3892358A1 (en) | DEVICE AND METHOD FOR PURIFYING CO AND NOx SINTERED FLUE GAS | |
| CN204555717U (en) | Warm flue gas SCR denitration device in a kind of cement kiln end | |
| CN104174287B (en) | Partial flue gas denitration system and method for sintering machine | |
| CN109381990A (en) | A kind of steel sintering flue gas denitrification system and the method for denitration using system progress | |
| CN209885578U (en) | Dust removal SOx/NOx control takes off white integration system | |
| CN103994456A (en) | Integrated system for efficiently and synergistically removing multiple pollutants | |
| CN105169943A (en) | Integrated system for coke oven flue gas desulfurization and denitrification and waste heat recovery | |
| CN112268293A (en) | Large-scale thermal power generating unit flue gas active coke purification system and method | |
| CN108392956A (en) | Desulfurization and denitrification system and method for coke oven flue gas | |
| CN110833763B (en) | Production process and equipment for organic flue gas incineration, desulfurization, dust removal and denitration | |
| CN109731472B (en) | Energy-saving boiler flue gas purification system and method | |
| CN212431808U (en) | Heating furnace waste gas multi-pollutant cooperative treatment system | |
| CN111895799A (en) | Heating furnace waste gas multi-pollutant cooperative treatment system | |
| CN210267304U (en) | Boiler flue gas denitration device | |
| CN111804138A (en) | Biomass boiler flue gas denitration system and application process thereof | |
| CN204543995U (en) | A kind of cement kiln end low-temperature smoke air SCR denitrification apparatus | |
| CN107420927A (en) | A kind of fire coal boiler fume high-efficient purification and UTILIZATION OF VESIDUAL HEAT IN technique | |
| CN111878835A (en) | Coupling process and system for carbon-containing solid waste combustion utilization and sintering flue gas purification treatment | |
| CN203836997U (en) | Various-contaminant high-efficiency cooperative removing integrated system | |
| CN212841617U (en) | Ultralow discharging equipment of sludge drying incineration tail gas | |
| CN214581129U (en) | SCR (Selective catalytic reduction) treatment system for hazardous waste incineration flue gas | |
| CN213656805U (en) | Active burnt clean system of large-scale thermal power generating unit flue gas | |
| CN112495160B (en) | Device and method for tail gas nitrogen oxide removal process of sulfur recovery device | |
| CN211435702U (en) | Multi-pollutant integrated removing system of circulating fluidized bed boiler | |
| CN113842772A (en) | Grate-rotary kiln pellet flue gas SCR denitration method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |