CN104548900A - Process device of coke oven fume denitrification, desulfuration and reheating system - Google Patents
Process device of coke oven fume denitrification, desulfuration and reheating system Download PDFInfo
- Publication number
- CN104548900A CN104548900A CN201410835364.1A CN201410835364A CN104548900A CN 104548900 A CN104548900 A CN 104548900A CN 201410835364 A CN201410835364 A CN 201410835364A CN 104548900 A CN104548900 A CN 104548900A
- Authority
- CN
- China
- Prior art keywords
- ammonia
- flue gas
- ammoniacal liquor
- pipeline
- desulfurizing tower
- 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
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 39
- 239000000571 coke Substances 0.000 title claims abstract description 19
- 239000003517 fume Substances 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 title abstract description 12
- 238000003303 reheating Methods 0.000 title abstract description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 41
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 35
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 20
- 239000012895 dilution Substances 0.000 claims abstract description 10
- 238000010790 dilution Methods 0.000 claims abstract description 10
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000003546 flue gas Substances 0.000 claims description 42
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 41
- 239000000779 smoke Substances 0.000 claims description 27
- 230000023556 desulfurization Effects 0.000 claims description 26
- 230000003009 desulfurizing effect Effects 0.000 claims description 23
- 238000010438 heat treatment Methods 0.000 claims description 7
- 230000026676 system process Effects 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 5
- 239000008246 gaseous mixture Substances 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 3
- 239000002918 waste heat Substances 0.000 abstract description 2
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 231100000572 poisoning Toxicity 0.000 description 2
- 230000000607 poisoning effect Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The invention provides a process device of a coke oven fume denitrification, desulfuration and reheating system. The process device consists of an SCR denitrification reactor (1), a GGH fume reheater (2), a desulfuration tower (3), an ammonia water evaporator (4), an ammonia air mixer (5), a dilution fan (6), an ammonia water dilution tank (7), an ammonia pump (8), a pressurizing fan (9), a fume switching valve (10), a chimney (11) and a pipeline which are connected together. The process device has the advantages that waste ammonia water and waste heat of fume in factories can be sufficiently utilized, the purposes of denitrification and desulfuration are achieved, the denitrificatio and desulfuration efficiency is improved, the operation cost is lowered, system corrosion is avoided, and the like.
Description
Technical field
The invention belongs to Coke-oven flue gas governing technical field, relate to a kind of coke oven flue gas denitration desulfurization and reheat system process unit.Be mainly used in the denitrating flue gas desulfurization of coking industry coke oven and the discharge of other Industrial Stoves.
Technical background
The a large amount of raw coke oven gas produced in coke oven production process, by containing a large amount of sulfur dioxide and nitrogen oxides pollution thing pollutant atmosphere in the flue gas of heating furnace post combustion emission, also there is same pollution problem in the flue gas discharged in other kiln production processes.Along with the pay attention to day by day of country to air contaminant treatment and the raising of discharge standard, coke oven flue gas is extremely urgent with other kiln gas pollution controls.Due to the particularity that coke oven is produced, namely coke oven is produced general continuous seepage and can not blowing out be had a power failure, and produces the features such as flue-gas temperature dew point is low of a large amount of remained ammonia, discharge in production.The kiln denitration such as coke oven in the past, generally adopts denitration in the stove or coal gas dry-method denitration, and efficiency is low, especially there is problems such as easily causing main furnace system blocking; Desulfurization generally adopts smoke-gas wet desulfurization, because flue gas after desulfurization temperature is significantly reduced to below 80 DEG C of acid dew points, the follow-up flue of desulfurizing tower and chimney acid corrosion can be caused, and flue and chimney anticorrosion are invested greatly, difficulty of construction is high, operating cost is high, above problem all limits applying of coke oven flue gas denitration desulfurizer.
Summary of the invention
The present invention is by SCR denitration process unit, wet desulfurizing process device and GGH smoke heat replacing device reasonable combination, mutually supplement, take full advantage of the heat energy of high-temperature flue gas itself, adopt heat exchange principle, utilize GGH reheat machine, by wet flue gas reheating after desulfurization, there is provided a kind of coke oven flue gas denitration desulfurization and reheat system process unit, the problems such as denitration desulfuration efficiency was low in the past, operating cost is high, system corrosion that solve coke oven flue gas.
The present invention is achieved through the following technical solutions: a kind of coke oven flue gas denitration desulfurization and reheat system process unit, by SCR denitration reactor, GGH smoke re-heater, desulfurizing tower, ammoniacal liquor evaporimeter, the empty blender of ammonia, dilution air, ammoniacal liquor thinning tank, aqua ammonia pump, booster fan, flue gas transfer valve, chimney and pipeline are connected and form, it is characterized in that: described SCR denitration reactor adopts double-reactor, the pipeline connected with fume pipe is connected to flue gas transfer valve respectively, enter the empty gaseous mixture port of ammonia to be connected with the empty blender pipeline of ammonia, the empty blender of ammonia respectively with ammoniacal liquor evaporimeter, dilution air connects,
The hot air inlet of described GGH smoke re-heater is connected with the outlet of SCR denitration reactor, hot air outlet communicates with desulfurizing tower entrance through booster fan, ammoniacal liquor thinning tank, aqua ammonia pump are also communicated with desulfurizing tower entrance by pipeline, desulfurizing tower outlet communicates with the heating air intake of GGH smoke re-heater by the road, and GGH smoke re-heater heating gas outlet communicates with chimney pipeline;
Described desulfurizing tower is wet desulfuration tower.
Described ammoniacal liquor evaporimeter is the electrically heated ammoniacal liquor evaporimeter of water-bath type.
Apparatus main body comprises the process units such as SCR denitration reactor, GGH smoke re-heater, wet desulfuration tower; First technological process carries out denitrating flue gas, and after denitration, heat smoke enters wet desulfuration tower again and carries out desulfurization after entering GGH smoke re-heater, reaches dew point more than 160 DEG C and enter smoke stack emission after clean wet flue gas enters GGH smoke re-heater and heat smoke heat exchange again after desulfurization; Denitrification reducing agent and wet desulphurization agent all adopt plant area's remained ammonia, enter Benitration reactor again after being heated into ammonia for the ammoniacal liquor of denitration by the ammoniacal liquor evaporimeter of water-bath type electric heater and flue gas carries out denitration reaction, after entering the dilution of ammoniacal liquor thinning tank for the ammoniacal liquor of desulfurization, pump into desulfurizing tower desulfurization; Enter after desulfurizing tower flue gas needs booster fan supercharging and enter desulfurizing tower, when the situations such as desulfurization maintenance or fault outage occur, after denitration, flue gas is opened by transfer valve and is directly entered smoke stack emission.
Described GGH smoke re-heater is a kind of by impeller transmission, and 70-80 DEG C of wet flue gas after DEG C heat smoke of 280-350 after denitration and desulfurization is carried out heat exchange, and make wet flue gas rise to more than 160 DEG C by 70-80 DEG C, heat smoke is down to 150-160 DEG C by 280-350 DEG C.
Described denitration desulfurization all adopts ammoniacal liquor, and ammoniacal liquor makees SCR denitration reducing agent after adopting the electrical heating of ammoniacal liquor evaporimeter to become ammonia, makees wet desulfuration tower desulfurizing agent after ammoniacal liquor dilution.
Described SCR denitration reactor adopts double-reactor, and a preparation and a use, is switched by flue gas transfer valve.Its advantage can be produced by on-line regeneration after avoiding tarry matters in smoke etc. poisoning.
Be placed on by GGH smoke re-heater between denitration sulfur removal technology device, its beneficial effect is:
1, can ensure into desulfurizing tower flue-gas temperature at 150-160 DEG C, ensure wet desulfurization flue gas temperature case;
2, improve wet flue gas dew point, avoid the follow-up flue of desulfurization and chimney corrosion;
3, keep plume rise temperature in chimney, under the accident conditions such as power failure, flue gas can be reached and naturally discharge, chimney of need not temporarily heating, cause coke oven to block up cigarette accident and occur;
4, plant area's remained ammonia is adopted to do denitrification reducing agent and desulfurizing agent, the treatment of wastes with processes of wastes against one another.
Accompanying drawing explanation
Accompanying drawing 1 is present invention process device schematic diagram.
In figure: 1, SCR denitration reactor, 2, GGH smoke re-heater, 3, desulfurizing tower, 4, ammoniacal liquor evaporimeter, 5, the empty blender of ammonia, 6, dilution air, 7, ammoniacal liquor thinning tank, 8, aqua ammonia pump, 9, booster fan, 10, flue gas transfer valve, 11, chimney.
Detailed description of the invention
Below in conjunction with accompanying drawing, specific embodiment is described:
First enter SCR denitration reactor 1 from coke oven flue gas and carry out denitration, wet flue gas after heat smoke enters GGH smoke re-heater 2 and desulfurizing tower 3 desulfurization after denitration carries out heat exchange, by entering desulfurizing tower 3 desulfurization after booster fan 9 supercharging after after heat exchange, heat smoke is down to 150-160 DEG C by 280-350 DEG C, desulfurizing tower 3 exports wet flue gas and enters GGH smoke re-heater and become about 160 DEG C flue gases to enter chimney 11 by 70-80 DEG C of heat exchange to discharge.Whole system flue gas is switched by flue gas transfer valve 10, and namely when the situation such as desulfurization maintenance or fault outage occurs, after denitration, flue gas is opened directly to enter chimney 11 and discharge by transfer valve; Online regenerative ratio is switched by flue gas transfer valve 10 after SCR denitration reactor internal cause tarry matters in smoke etc. are poisoning.
Enter the empty blender 5 of ammonia after being heated into ammonia from the deposed ammonia part of plant area more than 20% by the electrically heated ammoniacal liquor evaporimeter 4 of water-bath type, be diluted to the ammonia of about 5% by dilution air 6 after, do denitrification reducing agent, enter SCR denitration reactor 1 and carry out denitration; Another part ammoniacal liquor enters ammoniacal liquor that ammoniacal liquor thinning tank 7 is diluted to about 6% and regularly squeezes into wet desulfuration tower 3 desulfurization by aqua ammonia pump 8 and make desulfurizing agent and carry out desulfurization use.
Whole set process device organically combines, and mutually supplements, makes full use of plant area's deposed ammonia and fume waste heat, reach denitration desulfurization object, improves denitration desulfuration efficiency, reduces operating cost, avoids the problems such as system corrosion.
Claims (2)
1. a coke oven flue gas denitration desulfurization and reheat system process unit, by SCR denitration reactor (1), GGH smoke re-heater (2), desulfurizing tower (3), ammoniacal liquor evaporimeter (4), the empty blender (5) of ammonia, dilution air (6), ammoniacal liquor thinning tank (7), aqua ammonia pump (8), booster fan (9), flue gas transfer valve (10), chimney (11) and pipeline are connected and form, it is characterized in that: described SCR denitration reactor (1) adopts double-reactor, the pipeline connected with fume pipe is connected to respectively flue gas transfer valve (10), enter the empty gaseous mixture port of ammonia to be connected with empty blender (5) pipeline of ammonia, the empty blender (5) of ammonia respectively with ammoniacal liquor evaporimeter (4), dilution air (6) connects, the hot air inlet of described GGH smoke re-heater (2) is connected with the outlet of SCR denitration reactor (1), hot air outlet communicates with desulfurizing tower (3) entrance through booster fan (9), ammoniacal liquor thinning tank (7), aqua ammonia pump (8) are also communicated with desulfurizing tower (3) entrance by pipeline, desulfurizing tower (3) outlet communicates with the heating air intake of GGH smoke re-heater (2) by the road, and GGH smoke re-heater (2) heating gas outlet communicates with chimney (11) pipeline, described desulfurizing tower (3) is wet desulfuration tower.
2. a kind of coke oven flue gas denitration desulfurization according to claim 1 and reheat system process unit, is characterized in that: described ammoniacal liquor evaporimeter (4) is the electrically heated ammoniacal liquor evaporimeter of water-bath type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410835364.1A CN104548900A (en) | 2014-12-30 | 2014-12-30 | Process device of coke oven fume denitrification, desulfuration and reheating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410835364.1A CN104548900A (en) | 2014-12-30 | 2014-12-30 | Process device of coke oven fume denitrification, desulfuration and reheating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104548900A true CN104548900A (en) | 2015-04-29 |
Family
ID=53066613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410835364.1A Pending CN104548900A (en) | 2014-12-30 | 2014-12-30 | Process device of coke oven fume denitrification, desulfuration and reheating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104548900A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104941423A (en) * | 2015-05-20 | 2015-09-30 | 江苏新世纪江南环保股份有限公司 | Ammonia desulfurization and denitrification dedusting method and device utilizing catalytic cracking regeneration flue gas |
| CN105194990A (en) * | 2015-10-14 | 2015-12-30 | 中国华能集团清洁能源技术研究院有限公司 | Flue gas comprehensive management system applicable to coke refining oven |
| 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 |
| CN109589740A (en) * | 2019-01-04 | 2019-04-09 | 合肥中亚环保科技有限公司 | The processing unit and processing method of wet misty rain after a kind of cement plant wet desulphurization |
| CN110339705A (en) * | 2018-04-02 | 2019-10-18 | 山东莱钢节能环保工程有限公司 | A new technology and device for coke oven flue gas treatment |
| CN112403215A (en) * | 2020-11-17 | 2021-02-26 | 安徽威达环保科技股份有限公司 | Dry-process ultra-clean integrated treatment device and process for high-sulfur coke oven flue gas |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102309918A (en) * | 2011-03-14 | 2012-01-11 | 无锡华光锅炉股份有限公司 | Dedusting and denitration system for thermal power plant fire coal smoke |
| CN202460474U (en) * | 2012-01-19 | 2012-10-03 | 大连贝斯特环境工程设备有限公司 | Integral desulfurization and denitration complete device by catalytic reduction ammonia method for small and medium boilers |
| CN104100964A (en) * | 2014-07-16 | 2014-10-15 | 西安西热锅炉环保工程有限公司 | Synergistic removal system and method for realizing ultra-low emission of multiple pollutants of smoke of thermal power plant |
| CN203899456U (en) * | 2014-05-08 | 2014-10-29 | 南通亚泰工程技术有限公司 | Quick preheating system of selective denitration SCR catalysts for ships |
| CN204365119U (en) * | 2014-12-30 | 2015-06-03 | 大连贝斯特环境工程设备有限公司 | A kind of coke oven flue gas denitration desulfurization and reheat system process unit |
-
2014
- 2014-12-30 CN CN201410835364.1A patent/CN104548900A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102309918A (en) * | 2011-03-14 | 2012-01-11 | 无锡华光锅炉股份有限公司 | Dedusting and denitration system for thermal power plant fire coal smoke |
| CN202460474U (en) * | 2012-01-19 | 2012-10-03 | 大连贝斯特环境工程设备有限公司 | Integral desulfurization and denitration complete device by catalytic reduction ammonia method for small and medium boilers |
| CN203899456U (en) * | 2014-05-08 | 2014-10-29 | 南通亚泰工程技术有限公司 | Quick preheating system of selective denitration SCR catalysts for ships |
| CN104100964A (en) * | 2014-07-16 | 2014-10-15 | 西安西热锅炉环保工程有限公司 | Synergistic removal system and method for realizing ultra-low emission of multiple pollutants of smoke of thermal power plant |
| CN204365119U (en) * | 2014-12-30 | 2015-06-03 | 大连贝斯特环境工程设备有限公司 | A kind of coke oven flue gas denitration desulfurization and reheat system process unit |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104941423A (en) * | 2015-05-20 | 2015-09-30 | 江苏新世纪江南环保股份有限公司 | Ammonia desulfurization and denitrification dedusting method and device utilizing catalytic cracking regeneration flue gas |
| CN108176224A (en) * | 2015-05-20 | 2018-06-19 | 江苏新世纪江南环保股份有限公司 | A kind of regeneration fume from catalytic cracking ammonia process of desulfurization denitration dust collecting method and device |
| CN105194990A (en) * | 2015-10-14 | 2015-12-30 | 中国华能集团清洁能源技术研究院有限公司 | Flue gas comprehensive management system applicable to coke refining oven |
| 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 |
| CN110339705A (en) * | 2018-04-02 | 2019-10-18 | 山东莱钢节能环保工程有限公司 | A new technology and device for coke oven flue gas treatment |
| CN109589740A (en) * | 2019-01-04 | 2019-04-09 | 合肥中亚环保科技有限公司 | The processing unit and processing method of wet misty rain after a kind of cement plant wet desulphurization |
| CN112403215A (en) * | 2020-11-17 | 2021-02-26 | 安徽威达环保科技股份有限公司 | Dry-process ultra-clean integrated treatment device and process for high-sulfur coke oven flue gas |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104548900A (en) | Process device of coke oven fume denitrification, desulfuration and reheating system | |
| CN104174287B (en) | Partial flue gas denitration system and method for sintering machine | |
| CN108579369B (en) | A coke oven flue gas multi-pollutant collaborative treatment system and method | |
| CN104296543A (en) | Denitration and waste heat recovery integrated furnace | |
| CN204555717U (en) | Warm flue gas SCR denitration device in a kind of cement kiln end | |
| CN103785290A (en) | Sintering and pelletizing flue gas desulfurization and denitrification coordinating management system and process | |
| CN102735070A (en) | Desulfurization and denitrification afterheat power generation systematization device of glass melter flue gas | |
| CN103877856B (en) | A method for utilizing and purifying waste heat of coke oven flue gas | |
| CN103900391A (en) | Selective sintering machine flue gas heat exchange denitration system and method thereof | |
| CN109966812A (en) | A kind of cement kiln end denitrating flue gas and system, the process of waste heat recycling | |
| CN104801161A (en) | Glass melting furnace flue gas desulfurization and denitrification process taking petroleum coke as main fuel and equipment of glass melting furnace flue gas desulfurization and denitrification process | |
| CN104548931A (en) | Device for producing ammonia gas through pyrolysis of urea by using high-temperature flue gas as heat source | |
| CN203816509U (en) | Desulfuration and denitration system for low temperature coke oven exhaust | |
| CN107115775B (en) | Iron ore sintering flue gas sectional enrichment self-heat exchange emission reduction SOxAnd NOxMethod of producing a composite material | |
| CN109731472B (en) | Energy-saving boiler flue gas purification system and method | |
| CN208177248U (en) | It is a kind of based on active carbon/coke coke oven flue gas system for desulfuration and denitration | |
| CN204365119U (en) | A kind of coke oven flue gas denitration desulfurization and reheat system process unit | |
| CN210206455U (en) | Sintering low temperature SCR deNOx systems | |
| CN110787620A (en) | Glass melting furnace flue gas is emission reduction coupling waste heat power generation system in coordination | |
| CN207708812U (en) | A kind of coke oven flue gas denitration, desulfurization integrated processing unit | |
| CN102755821A (en) | Carbon calcining furnace waste gas desulfurizing and dust-removing method and device | |
| CN211462717U (en) | Glass melting furnace flue gas is emission reduction coupling waste heat power generation system in coordination | |
| CN204522707U (en) | Electron beam flue gas processing device | |
| CN208066118U (en) | A kind of coke oven flue gas desulphurization denitration dedusting comprehensive treatment device | |
| CN207951086U (en) | A kind of coke oven flue gas denitration desulfurization and residual neat recovering system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150429 |
|
| WD01 | Invention patent application deemed withdrawn after publication |