CN108087851A - A kind of binary channels waste heat boiler for preventing SCR denitration ammonium salt crystallization - Google Patents
A kind of binary channels waste heat boiler for preventing SCR denitration ammonium salt crystallization Download PDFInfo
- Publication number
- CN108087851A CN108087851A CN201810115043.2A CN201810115043A CN108087851A CN 108087851 A CN108087851 A CN 108087851A CN 201810115043 A CN201810115043 A CN 201810115043A CN 108087851 A CN108087851 A CN 108087851A
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- passage
- waste heat
- heat boiler
- boiler
- denitration
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- 239000002918 waste heat Substances 0.000 title claims abstract description 82
- 238000002425 crystallisation Methods 0.000 title claims abstract description 29
- 230000008025 crystallization Effects 0.000 title claims abstract description 29
- 150000003863 ammonium salts Chemical class 0.000 title claims abstract description 28
- 239000007789 gas Substances 0.000 claims abstract description 16
- 230000008676 import Effects 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 32
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 26
- 239000003546 flue gas Substances 0.000 claims description 26
- 229910021529 ammonia Inorganic materials 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000004071 soot Substances 0.000 claims description 13
- 239000012895 dilution Substances 0.000 claims description 11
- 238000010790 dilution Methods 0.000 claims description 11
- 239000007921 spray Substances 0.000 claims description 11
- 238000011084 recovery Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000006200 vaporizer Substances 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 6
- 238000007664 blowing Methods 0.000 claims description 5
- 230000035939 shock Effects 0.000 claims description 5
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 239000010410 layer Substances 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 3
- 230000007774 longterm Effects 0.000 abstract description 4
- 230000007423 decrease Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- AQGDXJQRVOCUQX-UHFFFAOYSA-N N.[S] Chemical compound N.[S] AQGDXJQRVOCUQX-UHFFFAOYSA-N 0.000 description 2
- 230000002146 bilateral effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 206010020843 Hyperthermia Diseases 0.000 description 1
- BIGPRXCJEDHCLP-UHFFFAOYSA-N ammonium bisulfate Chemical compound [NH4+].OS([O-])(=O)=O BIGPRXCJEDHCLP-UHFFFAOYSA-N 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000036031 hyperthermia Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements or dispositions of combustion apparatus
- F22B31/08—Installation of heat-exchange apparatus or of means in boilers for heating air supplied for combustion
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chimneys And Flues (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of binary channels waste heat boilers for preventing SCR denitration ammonium salt crystallization, including boiler steel structure, boiler inlet passage, denitration exit passageway, boiler export passage, exhanst gas outlet, waste heat boiler high temperature section, waste heat boiler denitration section and two sets of waste heat boiler low-temperature zones, the denitration exit passageway includes passage A, passage B, the first stop valve being arranged on passage A and the second stop valve being arranged on passage B；The boiler export passage includes channel C, passage D, the 3rd stop valve being arranged in channel C and the 4th stop valve being arranged on passage D；Two sets of waste heat boiler low-temperature zones are arranged on correspondingly between the outlet of the passage A and the import of channel C and between the outlet of the passage B and the import of passage D.The binary channels waste heat boiler of the present invention can effectively avoid because ammonium salt crystallization causes waste heat boiler efficiency to decline and stop, it can be ensured that device long-term operation.
Description
Technical field
The present invention relates to a kind of binary channels waste heat boilers for preventing SCR denitration ammonium salt crystallization.
Background technology
Generally, oil refining, the waste heat boiler of chemical metallurgy device are responsible for the waste heat recovery of device, self-produced steam, feedwater
The multinomial effects such as preheating, device vapour and power output.At present, due to the needs of environmental requirement, waste heat boiler is often fitted in SCR
Warm denitration function, the principle of SCR denitration are to reduce the NOx in flue gas with ammonia so as to achieve the purpose that denitration.Consider anyization
Learning reaction can not possibly convert completely, therefore using inevitably there are ammonia in the flue gas after Benitration reactor during SCR denitration
Gas remains, and is commonly called as the escaping of ammonia.The escaping of ammonia be facts have proved in more than 3ppm, the ammonia of escape inevitably with the SO3 in flue gas
Generate ammonium sulfate or hydrogen sulfate ammonia with water, be commonly called as the crystallization of sulphur ammonia, the sulphur ammonia crystalline melt point of generation is relatively low, often with the catalysis in flue gas
Agent and particulate matter, which combine to be attached on boiler heating surface, causes flue gas to block, and so as to influence boiler efficiency, can seriously influence boiler
Safe operation causes to be forced blowing out or destructive consequence.
The content of the invention
The defects of the purpose of the present invention is overcoming the prior art, provides a kind of bilateral for preventing SCR denitration ammonium salt crystallization
Road waste heat boiler, with it is light-weight, rational in infrastructure, heat-transfer effect is good, modularized design, binary channels design and installation are convenient
The advantages of, it is realized on the basis of being removed to flue gas waste heat recovery and to nitrogen oxides in effluent and avoids ammonium salt crystallization so as to ensure
Waste heat boiler long-term operation.
Realizing the technical solution of above-mentioned target is：A kind of binary channels waste heat boiler for preventing SCR denitration ammonium salt crystallization, bag
Include boiler steel structure, boiler inlet passage, denitration exit passageway, boiler export passage, exhanst gas outlet, waste heat boiler high temperature section,
Waste heat boiler denitration section and two sets of waste heat boiler low-temperature zones, wherein：
The boiler steel structure includes steelframe and the platform staircase that is arranged on the steelframe, the boiler inlet passage,
Denitration exit passageway and boiler export passage are separately fixed on the steelframe；
The denitration exit passageway includes passage A, passage B, the first stop valve being arranged on passage A and is arranged on passage
The second stop valve on B, the port of export of the boiler inlet passage connect respectively with the passage A and passage B；
The boiler export passage includes channel C, passage D, the 3rd stop valve being arranged in channel C and is arranged on passage
The 4th stop valve on D, the channel C and passage D are connected respectively with the exhanst gas outlet；
The passage A and channel C are oppositely arranged, and the passage B and passage D are oppositely arranged；
The waste heat boiler high temperature section includes water conservation section, high temperature superheater, low temperature superheater and high-temperature evaporator；
The waste heat boiler denitration section includes dilution wind preheater, spray ammonia module and Benitration reactor；
The water conservation section, high temperature superheater, low temperature superheater, high-temperature evaporator, dilution wind preheater, spray ammonia module and
The flow direction of Benitration reactor along flue gas is successively set in the boiler inlet passage；
Two sets of waste heat boiler low-temperature zones be arranged on correspondingly the passage A outlet and channel C import it
Between and the outlet of the passage B and the import of passage D between；
It often covers in the waste heat boiler low-temperature zone and is respectively arranged with flue gas waste heat recovery equipment；
Ash cleaner for exhaust-heating boiler is provided in the waste heat boiler low-temperature zone.
A kind of above-mentioned binary channels waste heat boiler for preventing SCR denitration ammonium salt crystallization, wherein, the flue gas waste heat recovery
Equipment includes the cryogenic vaporizer, high-temperature economizer and the low-level (stack-gas) economizer that are set gradually along the flow direction of flue gas.
A kind of above-mentioned binary channels waste heat boiler for preventing SCR denitration ammonium salt crystallization, wherein, the water conservation section, height
Warm superheater, low temperature superheater, high-temperature evaporator, dilution wind preheater, spray ammonia module, Benitration reactor, cryogenic vaporizer, height
Modular structure is respectively adopted in warm economizer and low-level (stack-gas) economizer.
A kind of above-mentioned binary channels waste heat boiler for preventing SCR denitration ammonium salt crystallization, wherein, the waste heat boiler low temperature
Duan Caiyong external thermal insulation hot-wall structures.
A kind of above-mentioned binary channels waste heat boiler for preventing SCR denitration ammonium salt crystallization, wherein, the waste heat boiler deashing
Device includes the shock wave soot blower of online soot blowing and the water flushing device of excision soot blower, and the shock wave soot blower is arranged on described
On the external thermal insulation hot wall of waste heat boiler low-temperature zone.
A kind of above-mentioned binary channels waste heat boiler for preventing SCR denitration ammonium salt crystallization, wherein, the Benitration reactor is adopted
With single-layer or multi-layer Benitration reactor, the multilayer Benitration reactor is set gradually along the flow direction of flue gas.
The binary channels waste heat boiler for preventing SCR denitration ammonium salt crystallization of the present invention, with light-weight, structure conjunction
Reason, the advantages of heat-transfer effect is good, modularized design, binary channels design and installation facilitate, to flue gas waste heat recovery and to flue gas
On the basis of middle removal of nitrogen oxide realize avoid ammonium salt crystallization so as to ensure waste heat boiler long-term operation, can effectively avoid because
Ammonium salt crystallization causes waste heat boiler efficiency to decline and stop.
Description of the drawings
Fig. 1 is the structure diagram of the binary channels waste heat boiler for preventing SCR denitration ammonium salt crystallization of the present invention；
Fig. 2 is the side view of Fig. 1；
Fig. 3 is the process flow chart of the binary channels waste heat boiler for preventing SCR denitration ammonium salt crystallization of the present invention.
Specific embodiment
It is right below in conjunction with the accompanying drawings in order to which those skilled in the art is made to be better understood when technical scheme
Its specific embodiment is described in detail：
It please refers to Fig.1, Fig. 2 and Fig. 3, highly preferred embodiment of the present invention, a kind of bilateral for preventing SCR denitration ammonium salt crystallization
Road waste heat boiler, including boiler steel structure, boiler inlet passage 10, denitration exit passageway, boiler export passage, exhanst gas outlet
50th, waste heat boiler high temperature section, waste heat boiler denitration section and two sets of waste heat boiler low-temperature zones.
Boiler steel structure includes steelframe 71 and platform staircase 72.Boiler inlet passage 10, denitration exit passageway and boiler go out
Mouth passage is separately fixed on steelframe 71.
Denitration exit passageway includes passage A 31, passage B 33, the first stop valve 32 being arranged on passage A 31 and sets
The second stop valve 34 on passage B 33 is put, the port of export of boiler inlet passage 10 connects respectively with passage A 31 and passage B 33
It is logical.
Boiler export passage includes channel C 51, passage D 53, the 3rd stop valve 52 being arranged in channel C 51 and sets
The 4th stop valve 54 on passage D 53 is put, channel C 51 and passage D 53 are connected respectively with exhanst gas outlet 50.Passage A 31
It is oppositely arranged with channel C 51, passage B 33 and passage D 53 are oppositely arranged；
Waste heat boiler high temperature section includes water conservation section 11, high temperature superheater 12, low temperature superheater 13 and high-temperature evaporator 14；
Waste heat boiler denitration section includes dilution wind preheater 21, spray ammonia module 22 and Benitration reactor 23；Water conservation section 11, hyperthermia and superheating
Device 12, low temperature superheater 13, high-temperature evaporator 14, dilution wind preheater 21, spray ammonia module 22 and Benitration reactor 23 are along flue gas
Flow direction be successively set in boiler inlet passage 10.
Two sets of waste heat boiler low-temperature zones are arranged on correspondingly between the outlet of passage A 31 and the import of channel C 51
And between the outlet of passage B 33 and the import of passage D 53；It often covers in waste heat boiler low-temperature zone and is respectively arranged with fume afterheat
Reclaimer, flue gas waste heat recovery equipment can be identical, can also arrange difference；In the present embodiment, flue gas waste heat recovery equipment
Include the cryogenic vaporizer 41, high-temperature economizer 42 and the low-level (stack-gas) economizer 43 that are set gradually along the flow direction of flue gas.
Ash cleaner for exhaust-heating boiler is provided in waste heat boiler low-temperature zone.Waste heat boiler low-temperature zone uses external thermal insulation hot wall knot
Structure is conducive to set effective soot blowing facility, so as to control ammonium salt crystallization.Ash cleaner for exhaust-heating boiler includes swashing for online soot blowing
The water flushing device 62 of ripple soot blower 61 and excision soot blower, shock wave soot blower 61 are arranged on the external thermal insulation of waste heat boiler low-temperature zone
On hot wall.
Water conservation section 11, high temperature superheater 12, low temperature superheater 13, high-temperature evaporator 14, dilution wind preheater 21, spray ammonia
Modular structure is respectively adopted in module 22, Benitration reactor 23, cryogenic vaporizer 41, high-temperature economizer 42 and low-level (stack-gas) economizer 43.
Water conservation section 11, high temperature superheater 12, low temperature superheater 13, high-temperature evaporator 14, dilution wind preheater 21, spray ammonia module 22,
Benitration reactor 23, cryogenic vaporizer 41, high-temperature economizer 42 and low-level (stack-gas) economizer 43 form each heating surface of waste heat boiler.I.e.
Each heating surface of waste heat boiler is designed as modular structure, has and is replaced using maintenance.
Benitration reactor 23 use single-layer or multi-layer Benitration reactor, multilayer Benitration reactor along the flow direction of flue gas according to
Secondary setting.
Again referring to Fig. 3, flue gas enters from the input end of boiler inlet passage 10, successively by water conservation section 11, high temperature
At superheater 12, low temperature superheater 13, high-temperature evaporator 14, dilution wind preheater 21, spray ammonia module 22 and Benitration reactor 23
Then reason enters waste heat boiler low-temperature zone by passage A and/or passage B respectively and carries out flue gas waste heat recovery, last flue gas is from logical
Road C and/or passage D enters exhanst gas outlet 50, can lead on the passage A, passage B, channel C, passage D before and after waste heat boiler low-temperature zone
It crosses corresponding stop valve effectively to cut off, the pipe-line system of two sets of waste heat boiler low-temperature zones also can effectively be cut off and two sets of waste heat boilers
Low-temperature zone is spare each other.
In conclusion the binary channels waste heat boiler of the present invention can prevent the binary channels waste heat boiler of SCR denitration ammonium salt crystallization,
Have the advantages that with it is light-weight, rational in infrastructure, heat-transfer effect is good, modularized design, binary channels design and installation are convenient, can have
Effect avoids because of ammonium salt crystallization waste heat boiler efficiency being caused to decline and stop, it can be ensured that device long-term operation.
Those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate the present invention,
And be not used as limitation of the invention, as long as in the spirit of the present invention, the change to embodiment described above
Change, modification will all fall in the range of claims of the present invention.
Claims (6)
1. a kind of binary channels waste heat boiler for preventing SCR denitration ammonium salt crystallization, which is characterized in that including boiler steel structure, pot
Stove intake channel, denitration exit passageway, boiler export passage, exhanst gas outlet, waste heat boiler high temperature section, waste heat boiler denitration section and
Two sets of waste heat boiler low-temperature zones, wherein：
The boiler steel structure includes steelframe and the platform staircase being arranged on the steelframe, the boiler inlet passage, denitration
Exit passageway and boiler export passage are separately fixed on the steelframe；
The denitration exit passageway includes passage A, passage B, the first stop valve being arranged on passage A and is arranged on passage B
The second stop valve, the port of export of the boiler inlet passage connects respectively with the passage A and passage B；
The boiler export passage includes channel C, passage D, the 3rd stop valve being arranged in channel C and is arranged on passage D
The 4th stop valve, the channel C and passage D are connected respectively with the exhanst gas outlet；
The passage A and channel C are oppositely arranged, and the passage B and passage D are oppositely arranged；
The waste heat boiler high temperature section includes water conservation section, high temperature superheater, low temperature superheater and high-temperature evaporator；
The waste heat boiler denitration section includes dilution wind preheater, spray ammonia module and Benitration reactor；
The water conservation section, high temperature superheater, low temperature superheater, high-temperature evaporator, dilution wind preheater, spray ammonia module and denitration
The flow direction of reactor along flue gas is successively set in the boiler inlet passage；
Two sets of waste heat boiler low-temperature zones be arranged on correspondingly between the outlet of the passage A and the import of channel C with
And between the outlet of the passage B and the import of passage D；
It often covers in the waste heat boiler low-temperature zone and is respectively arranged with flue gas waste heat recovery equipment；
Ash cleaner for exhaust-heating boiler is provided in the waste heat boiler low-temperature zone.
2. a kind of binary channels waste heat boiler for preventing SCR denitration ammonium salt crystallization according to claim 1, feature exist
In, the flue gas waste heat recovery equipment include the cryogenic vaporizer set gradually along the flow direction of flue gas, high-temperature economizer and
Low-level (stack-gas) economizer.
3. a kind of binary channels waste heat boiler for preventing SCR denitration ammonium salt crystallization according to claim 2, feature exist
In the water conservation section, high temperature superheater, low temperature superheater, high-temperature evaporator, dilution wind preheater, spray ammonia module, denitration are anti-
Answer device, cryogenic vaporizer, high-temperature economizer and low-level (stack-gas) economizer that modular structure is respectively adopted.
4. a kind of binary channels waste heat boiler for preventing SCR denitration ammonium salt crystallization according to claim 1, feature exist
In the waste heat boiler low-temperature zone uses external thermal insulation hot-wall structure.
5. a kind of binary channels waste heat boiler for preventing SCR denitration ammonium salt crystallization according to claim 4, feature exist
In the ash cleaner for exhaust-heating boiler includes the shock wave soot blower of online soot blowing and the water flushing device of excision soot blower, described
Shock wave soot blower is arranged on the external thermal insulation hot wall of the waste heat boiler low-temperature zone.
6. a kind of binary channels waste heat boiler for preventing SCR denitration ammonium salt crystallization according to claim 1, feature exist
In the Benitration reactor uses single-layer or multi-layer Benitration reactor, flow direction of the multilayer Benitration reactor along flue gas
It sets gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810115043.2A CN108087851A (en) | 2018-02-06 | 2018-02-06 | A kind of binary channels waste heat boiler for preventing SCR denitration ammonium salt crystallization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810115043.2A CN108087851A (en) | 2018-02-06 | 2018-02-06 | A kind of binary channels waste heat boiler for preventing SCR denitration ammonium salt crystallization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108087851A true CN108087851A (en) | 2018-05-29 |
Family
ID=62193886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810115043.2A Pending CN108087851A (en) | 2018-02-06 | 2018-02-06 | A kind of binary channels waste heat boiler for preventing SCR denitration ammonium salt crystallization |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5943865A (en) * | 1998-12-03 | 1999-08-31 | Cohen; Mitchell B. | Reheating flue gas for selective catalytic systems |
| CN204345682U (en) * | 2014-12-22 | 2015-05-20 | 山东恒涛节能环保有限公司 | A kind of boiler flue gas treatment system with SCR denitration function |
| CN105833695A (en) * | 2016-05-03 | 2016-08-10 | 浙江天蓝环保技术股份有限公司 | Device and technology for wet desulfurization and denitrification of flue gas of coal-fired boiler and treatment of wastewater |
| CN206198975U (en) * | 2016-10-31 | 2017-05-31 | 中钢集团鞍山热能研究院有限公司 | A kind of desulphurization denitration energy saving integral cleaning system of flue gases of cock oven |
| US20170197180A1 (en) * | 2014-06-05 | 2017-07-13 | Meihua ZOU | Process and device for desulphurization and denitration of flue gas |
| CN107174927A (en) * | 2017-07-13 | 2017-09-19 | 北京建筑材料科学研究总院有限公司 | The method of denitration and system of a kind of cement rotary kiln |
| CN207849329U (en) * | 2018-02-06 | 2018-09-11 | 上海宁松热能环境工程有限公司 | A kind of binary channels waste heat boiler preventing SCR denitration ammonium salt crystallization |
-
2018
- 2018-02-06 CN CN201810115043.2A patent/CN108087851A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5943865A (en) * | 1998-12-03 | 1999-08-31 | Cohen; Mitchell B. | Reheating flue gas for selective catalytic systems |
| US20170197180A1 (en) * | 2014-06-05 | 2017-07-13 | Meihua ZOU | Process and device for desulphurization and denitration of flue gas |
| CN204345682U (en) * | 2014-12-22 | 2015-05-20 | 山东恒涛节能环保有限公司 | A kind of boiler flue gas treatment system with SCR denitration function |
| CN105833695A (en) * | 2016-05-03 | 2016-08-10 | 浙江天蓝环保技术股份有限公司 | Device and technology for wet desulfurization and denitrification of flue gas of coal-fired boiler and treatment of wastewater |
| CN206198975U (en) * | 2016-10-31 | 2017-05-31 | 中钢集团鞍山热能研究院有限公司 | A kind of desulphurization denitration energy saving integral cleaning system of flue gases of cock oven |
| CN107174927A (en) * | 2017-07-13 | 2017-09-19 | 北京建筑材料科学研究总院有限公司 | The method of denitration and system of a kind of cement rotary kiln |
| CN207849329U (en) * | 2018-02-06 | 2018-09-11 | 上海宁松热能环境工程有限公司 | A kind of binary channels waste heat boiler preventing SCR denitration ammonium salt crystallization |
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: Jinhui town Fengxian District Shanghai city 201403 North Village four group B -28 Applicant after: SHANGHAI NINGSONG THERMAL & ENVIRONMENTAL ENGINEERING CO.,LTD. Applicant after: Zhejiang ningsong thermal boiler equipment Co.,Ltd. Address before: Jinhui town Fengxian District Shanghai city 201403 North Village four group B -28 Applicant before: SHANGHAI NINGSONG THERMAL & ENVIRONMENTAL ENGINEERING CO.,LTD. Applicant before: ZHEJIANG NINGSONG HEAT ENERGY BOILER EQUIPMENT CO.,LTD. |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180529 |