CN205832922U - A kind of coalitenessity kiln gas Environmental-protection comprehensive processing system - Google Patents
A kind of coalitenessity kiln gas Environmental-protection comprehensive processing system Download PDFInfo
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- CN205832922U CN205832922U CN201620393542.4U CN201620393542U CN205832922U CN 205832922 U CN205832922 U CN 205832922U CN 201620393542 U CN201620393542 U CN 201620393542U CN 205832922 U CN205832922 U CN 205832922U
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- China
- Prior art keywords
- desulfurizing tower
- air
- introduced machine
- coke oven
- flue
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- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 37
- 239000003546 flue gas Substances 0.000 claims abstract description 28
- 239000000571 coke Substances 0.000 claims abstract description 27
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000428 dust Substances 0.000 claims abstract description 17
- 239000007789 gas Substances 0.000 claims abstract description 15
- 238000011084 recovery Methods 0.000 claims abstract description 15
- 239000002918 waste heat Substances 0.000 claims abstract description 15
- 239000003054 catalyst Substances 0.000 claims abstract description 12
- 238000005507 spraying Methods 0.000 claims abstract description 8
- 238000010410 dusting Methods 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 230000001681 protective effect Effects 0.000 abstract description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 12
- 238000006477 desulfuration reaction Methods 0.000 description 10
- 230000023556 desulfurization Effects 0.000 description 9
- 229910021529 ammonia Inorganic materials 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000004939 coking Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000779 smoke Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The utility model discloses a kind of coalitenessity kiln gas Environmental-protection comprehensive processing system, including ammonia-spraying grid, middle low-temperature SCR reactor, catalyst, waste-heat recovery device, air-introduced machine one, desulfurizing tower, exhaust dust device with bag, air-introduced machine two and the former chimney of coke oven, coke oven flue gas outlet is connected with middle low-temperature SCR reactor inlet by flue, it is provided with ammonia-spraying grid between coke oven flue gas outlet and SCR reactor, waste-heat recovery device is arranged between middle low-temperature SCR reactor and air-introduced machine one, it is joined directly together by flue, one end of air-introduced machine one is connected with desulfurizing tower entrance, desulfurizing tower entrance is positioned at a side lower part of desulfurizing tower, desulfurizing tower outlet is positioned at desulfurizing tower opposite side top, desulfurizing tower outlet by flue successively with exhaust dust device with bag, air-introduced machine two and the former chimney of coke oven connect.This utility model is according to low temperature SCR denitration, waste heat recovery, the dust removal integrated route of semi-dry desulphurization in using according to coke oven flue gas feature, NOx, the SO in effective removing flue gas2, dust, reduce operating cost, improve work efficiency, ecological, environmental protective.
Description
Technical field
This utility model relates to the technical field of industrial smoke environmental protection treatment, and specifically a kind of coalitenessity kiln gas environmental protection is combined
Close processing system.
Background technology
Along with the development of society, environmental protection increasingly comes into one's own, and the discharge standard of atmosphere pollution has been had tighter by country
The requirement of lattice.Due to coking industry exhaust gas temperature relatively low (250～300 DEG C), traditional middle high temperature SCR denitration temperature requirement exists
More than 300 DEG C, therefore need to improve flue-gas temperature to meet denitration temperature requirement before denitration.
Existing sulfur method can be divided into dry method, semidry method, wet method three kinds.Dry desulfurization efficiency is low, the by-product of generation
More, existing discharge standard basically can not be met at present；Wet desulphurization effect is the highest, is applied to Jiao the most widely
Changing industry, but can cause secondary pollution, severe corrosion equipment, water consumption is high, floor space is big, and investment operating cost is high；Half-dried
Method product is powdered, does not produce secondary pollution, and equipment corrosion problem is relatively light, and its desulfurization degree is between the above two.Tradition
Industrial smoke denitration typically use in high temperature SCR denitration, must first improve flue-gas temperature owing to coke oven flue gas temperature is relatively low and enter again
Row denitration.Desulfurization typically uses wet desulphurization, and temperature loss is relatively big, and the flue gas after purification is directed to former chimney and discharges and need to additionally increase
Add heat to improve flue-gas temperature.
For coking industry, a suitable process route can not meet new environmental requirement at present, can subtract again
Invest operating cost less.
Utility model content
The purpose of this utility model is to provide a kind of coalitenessity kiln gas Environmental-protection comprehensive processing system, to solve the above-mentioned back of the body
The problem proposed in scape technology.
For achieving the above object, the following technical scheme of this utility model offer:
A kind of coalitenessity kiln gas Environmental-protection comprehensive processing system, including ammonia-spraying grid, middle low-temperature SCR reactor, catalyst,
Waste-heat recovery device, air-introduced machine one, desulfurizing tower, exhaust dust device with bag, air-introduced machine two and the former chimney of coke oven, coke oven flue gas outlet is logical
Cross flue to be connected with middle low-temperature SCR reactor inlet, between the outlet of described coke oven flue gas and SCR reactor, be provided with spray ammonia lattice
Grid, the catalyst in described middle low-temperature SCR reactor uses " 2+1 " layer design pattern, during described waste-heat recovery device is arranged on
Between low-temperature SCR reactor and air-introduced machine one, being joined directly together by flue, one end of described air-introduced machine one enters with desulfurizing tower
Mouth connects, and described desulfurizing tower entrance is positioned at a side lower part of desulfurizing tower, and desulfurizing tower outlet is positioned at desulfurizing tower opposite side top, described
Desulfurizing tower outlet is connected with exhaust dust device with bag, air-introduced machine two and the former chimney of coke oven successively by flue.
Catalyst in described middle low-temperature SCR reactor uses " 3+1 " layer design pattern to substitute " 2+1 " layer design mould
Formula.
Described middle low-temperature SCR reactor accessible coke oven flue gas SO2Content is less than 600mg/Nm3, dust content is little
In 1000mg/Nm3。
Described desulfurizing tower desulfurization is semi-dry desulphurization, with CaO as desulfurizing agent.
Compared with prior art, the beneficial effects of the utility model are:
1, coking industry exhaust gas temperature is relatively low, high temperature SCR denitration technology during low temperature SCR denitration technology replaces in employing, burnt
Without heating, therefore energy efficient before kiln gas entrance Benitration reactor, reduce investment operating cost.
2, the flue gas after desulphurization denitration dedusting introduces the former smoke stack emission of coke oven, and flue-gas temperature requires more than 140 DEG C, utilizes
Semi-dry desulphurization replaces the wet desulphurization that coking industry is conventional, reduces temperature loss, without hot standby before introducing the former chimney of coke oven.
3, semi-dry desulphurization coordinates bag-type dust to solve in the case of ensureing desulfurization degree compared to traditional wet desulphurization
The problems such as equipment corrosion is serious, investment operating cost is high, thermal loss is big.
On the one hand 4, setting up of waste-heat recovery device reclaims a part of heat energy, on the one hand can by control steam pressure and
Yield controls desulfurizing tower inlet temperature, and in making desulfurizing tower, temperature is in conveniently temperature range, improves desulfuration efficiency.
5, desulphurization denitration waste heat recovery integration can effectively remove NOx, the SO in flue gas2, dust, reduce running cost
With, improve work efficiency, ecological, environmental protective.
Accompanying drawing explanation
Fig. 1 is the structural representation of coalitenessity kiln gas Environmental-protection comprehensive processing system.
1: ammonia-spraying grid；2:SCR reactor；3: catalyst；4: waste-heat recovery device；5: air-introduced machine；6: desulfurizing tower；7: bag
Formula dust arrester；8: air-introduced machine；9: the former chimney of coke oven.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under making creative work premise
The every other embodiment obtained, broadly falls into the scope of this utility model protection.
Referring to Fig. 1, in this utility model embodiment, a kind of coalitenessity kiln gas Environmental-protection comprehensive processing system, including spray
Ammonia grid 1, middle low-temperature SCR reactor 2, catalyst 3, waste-heat recovery device 4, air-introduced machine 1, desulfurizing tower 6, exhaust dust device with bag
7, air-introduced machine 28 and the former chimney of coke oven 9, coke oven flue gas outlet is connected with middle low-temperature SCR reactor 2 entrance by flue,
It is provided with ammonia-spraying grid 1, the catalyst 3 in described middle low-temperature SCR reactor 2 between the outlet of described coke oven flue gas and SCR reactor 2
Use two-layer that catalyst is installed, reserve for one layer and do not install, or three layers are installed catalyst, reserve the pattern do not installed, i.e. for one layer
" 2+1 " layer or " 3+1 " layer design pattern.
Described waste-heat recovery device 4 is arranged between middle low-temperature SCR reactor 2 and air-introduced machine 1, straight by flue
Connecing connected, one end of described air-introduced machine 1 is connected with desulfurizing tower 6 entrance, and described desulfurizing tower 6 entrance is positioned at the side of desulfurizing tower 6
Bottom, desulfurizing tower 6 outlet is positioned at desulfurizing tower 6 opposite side top, and described desulfurizing tower 6 is exported and removed with pocket type successively by flue
Dirt device 7, air-introduced machine 28 and the former chimney of coke oven 9 connect.
Described middle low-temperature SCR reactor accessible coke oven flue gas SO2Content is less than 600mg/Nm3, dust content is little
In 1000mg/Nm3.Middle low temperature SCR denitration temperature requirement is between 180～300 DEG C, and coke oven flue gas temperature fully meets this denitration
Reaction requirement, therefore decreases flue gas link.According to flue-gas temperature gradient arrange after Benitration reactor waste heat recovery with
Improve capacity usage ratio,
This utility model removes according to low temperature SCR denitration, waste heat recovery, semi-dry desulphurization in using according to coke oven flue gas feature
Dirt integration route.
Described desulfurizing tower 6 desulfurization is semi-dry desulphurization, with CaO as desulfurizing agent.Semi-dry desulphurization coordinates bag-type dust phase
, investment operating cost height, heat serious compared with traditional wet desulphurization solution equipment corrosion in the case of ensureing desulfurization degree damage
Lose the problems such as big.
Operation principle of the present utility model is:
After coke oven flue gas uniformly mixes with the reducing agent gas ammonia sprayed in ammonia-spraying grid 1 in flue, low in entrance
Temperature SCR reactor 2, is reduced to N by NOx under the effect of catalyst 32And H2O, the flue gas after denitration enters waste-heat recovery device
4, utilize air-introduced machine 5 that flue gas causes desulfurizing tower 6 desulfurization, containing more dust in the flue gas after desulfurization, be therefore followed by desulfurizing tower 6
Dust is down to below discharge standard by bag-type dust collector 7, and the flue gas after purification is caused the former chimney of coke oven 9 by air-introduced machine 8 and discharges.
Gas ammonia is produced by liquefied ammonia evaporation, it is possible to produced by ammonia atomization.
It is obvious to a person skilled in the art that this utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, it is possible to realize this practicality in other specific forms new
Type.Therefore, no matter from the point of view of which point, all should regard embodiment as exemplary, and be nonrestrictive, this practicality is new
The scope of type is limited by claims rather than described above, it is intended that by the containing of equivalency in claim that fall
All changes in justice and scope are included in this utility model.Should not be considered as any reference in claim limiting
Involved claim.
Although moreover, it will be appreciated that this specification is been described by according to embodiment, but the most each embodiment only wraps
Containing an independent technical scheme, this narrating mode of description is only that for clarity sake those skilled in the art should
Description can also be formed those skilled in the art through appropriately combined as an entirety, the technical scheme in each embodiment
May be appreciated other embodiments.
Claims (2)
1. a coalitenessity kiln gas Environmental-protection comprehensive processing system, it is characterised in that include that ammonia-spraying grid, middle low-temperature SCR react
Device, catalyst, waste-heat recovery device, air-introduced machine one, desulfurizing tower, exhaust dust device with bag, air-introduced machine two and the former chimney of coke oven, coke oven
Exhanst gas outlet is connected with middle low-temperature SCR reactor inlet by flue, between the outlet of described coke oven flue gas and SCR reactor
Being provided with ammonia-spraying grid, described waste-heat recovery device is arranged between middle low-temperature SCR reactor and air-introduced machine one, passes through flue
Being joined directly together, one end of described air-introduced machine one is connected with desulfurizing tower entrance, and described desulfurizing tower entrance is positioned under the side of desulfurizing tower
Portion, desulfurizing tower outlet is positioned at desulfurizing tower opposite side top, and the outlet of described desulfurizing tower is filled with bag-type dusting successively by flue
Put, air-introduced machine two and the former chimney of coke oven connect.
Coalitenessity kiln gas Environmental-protection comprehensive processing system the most according to claim 1, it is characterised in that described middle low temperature
Catalyst in SCR reactor uses " 2+1 " layer design pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620393542.4U CN205832922U (en) | 2016-05-03 | 2016-05-03 | A kind of coalitenessity kiln gas Environmental-protection comprehensive processing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620393542.4U CN205832922U (en) | 2016-05-03 | 2016-05-03 | A kind of coalitenessity kiln gas Environmental-protection comprehensive processing system |
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| Publication Number | Publication Date |
|---|---|
| CN205832922U true CN205832922U (en) | 2016-12-28 |
Family
ID=57628338
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| CN201620393542.4U Active CN205832922U (en) | 2016-05-03 | 2016-05-03 | A kind of coalitenessity kiln gas Environmental-protection comprehensive processing system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109464897A (en) * | 2018-10-25 | 2019-03-15 | 南京华电节能环保设备有限公司 | A kind of coke oven flue gas desulphurization denitration waste heat recycling comprehensive application system |
| CN110779344A (en) * | 2018-07-11 | 2020-02-11 | 河北鸿科碳素有限公司 | Method for purifying carbon calcination flue gas for aluminum |
-
2016
- 2016-05-03 CN CN201620393542.4U patent/CN205832922U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110779344A (en) * | 2018-07-11 | 2020-02-11 | 河北鸿科碳素有限公司 | Method for purifying carbon calcination flue gas for aluminum |
| CN109464897A (en) * | 2018-10-25 | 2019-03-15 | 南京华电节能环保设备有限公司 | A kind of coke oven flue gas desulphurization denitration waste heat recycling comprehensive application system |
| CN109464897B (en) * | 2018-10-25 | 2024-01-26 | 南京华电节能环保股份有限公司 | Comprehensive application system for flue gas desulfurization and denitrification waste heat recovery of coke oven |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170303 Address after: 433226 Jingzhou City, Honghu, China Town, the city of road, No. 23 Patentee after: HUBEI SIBOYING ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Address before: 433200 Honghu City, Jingzhou, China Town, the town of road Patentee before: HUBEI SIBOYING ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180423 Address after: 433226 Jingzhou City, Honghu, China Town, the city of road, No. 23 Patentee after: HUBEI SIBOYING ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Address before: 433226 Jingzhou City, Honghu, China Town, the city of road, No. 23 Patentee before: HUBEI SIBOYING ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A comprehensive environmental protection treatment system for low-temperature coke oven flue gas Effective date of registration: 20231211 Granted publication date: 20161228 Pledgee: Bank of China Limited Jingzhou Branch Pledgor: HUBEI SIBOYING ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Registration number: Y2023980070472 |