CN110523265A - A kind of NO_x elimination method - Google Patents

A kind of NO_x elimination method Download PDF

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Publication number
CN110523265A
CN110523265A CN201810506780.5A CN201810506780A CN110523265A CN 110523265 A CN110523265 A CN 110523265A CN 201810506780 A CN201810506780 A CN 201810506780A CN 110523265 A CN110523265 A CN 110523265A
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CN
China
Prior art keywords
catalyst
nitrogen
nitrogen oxides
cuo
feo
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Pending
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CN201810506780.5A
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Chinese (zh)
Inventor
于杨
陈海波
殷玉圣
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China Petroleum and Chemical Corp
China Petrochemical Corp
Research Institute of Sinopec Nanjing Chemical Industry Co Ltd
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China Petrochemical Corp
Research Institute of Sinopec Nanjing Chemical Industry Co Ltd
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Priority to CN201810506780.5A priority Critical patent/CN110523265A/en
Publication of CN110523265A publication Critical patent/CN110523265A/en
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    • 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
    • B01D53/8628—Processes characterised by a specific catalyst
    • 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
    • B01D53/8659—Removing halogens or halogen compounds
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/02—Preparation of nitrogen
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B7/00—Halogens; Halogen acids
    • C01B7/01—Chlorine; Hydrogen chloride
    • C01B7/03—Preparation from chlorides
    • C01B7/04—Preparation of chlorine from hydrogen chloride
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/206—Rare earth metals
    • B01D2255/2065—Cerium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20715—Zirconium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/2073—Manganese
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20738—Iron
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20761—Copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20792—Zinc
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/209—Other metals
    • B01D2255/2092—Aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2256/00—Main component in the product gas stream after treatment
    • B01D2256/10—Nitrogen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2256/00—Main component in the product gas stream after treatment
    • B01D2256/26—Halogens or halogen compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/20—Halogens or halogen compounds
    • B01D2257/204—Inorganic halogen compounds
    • B01D2257/2045—Hydrochloric acid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/40—Nitrogen compounds
    • B01D2257/402—Dinitrogen oxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/40—Nitrogen compounds
    • B01D2257/404—Nitrogen oxides other than dinitrogen oxide
    • 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
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/10—Capture or disposal of greenhouse gases of nitrous oxide (N2O)

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biomedical Technology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

The invention belongs to environmental technology fields, and in particular to a kind of nitrogen oxides catalyzed conversion removing method.In fixed bed reactors, by, by catalyst bed, catalyst, for main activated centre, under reaction temperature and pressure, generates nitrogen, chlorine and water with the oxide of iron and copper after nitrogen oxides, hydrogen chloride and auxiliary gas preheating.While capable of converting nitrogen oxides to nitrogen using the method for the present invention, it converts hydrogen chloride gas in useful chlorine, realizes recycling for chlorine resource again while denitration.

Description

A kind of NO_x elimination method
Technical field
The invention belongs to environmental technology fields, and in particular to a kind of nitrogen oxides catalyzed conversion removing method.
Background technique
It include a large amount of nitrogen oxides harmful substance in exhaust gas caused by steel processing procedure etc., in order to reduce exhaust gas to environment Harm, usually to remove nitrogen oxides using catalyst is escaped danger.In addition, chlor-alkali industry and downstream organic matter chlorization product Production can generate a large amount of hydrogen chloride manufacture gas, and the production process of the products such as especially MDI and TDI, chlorine resource utilization is zero, Whole chlorine atoms are changed into hydrogen chloride.Therefore, it is that chlor-alkali industry and downstream product are looked forward to that the effective of hydrogen chloride gas, high value, which utilize, Industry urgent problem to be solved.
Summary of the invention
The object of the present invention is to provide a kind of effective ways of nitrogen oxides catalytic removal.
Of the invention is mainly characterized by while eliminating nitrogen oxides, using nitrogen oxides autoxidation characteristic, in height It imitates under catalyst action, converts hydrogen chloride in useful chlorine.
The method of the present invention technical solution are as follows: in fixed bed reactors, by nitrogen oxides, hydrogen chloride and auxiliary gas preheating Afterwards by catalyst bed, under reaction temperature and pressure, nitrogen, chlorine and water are generated.
Generally, the nitrogen oxides, hydrogen chloride and auxiliary gas are 10000h with volume space velocity-1Pass through catalyst bed Layer.
The catalyst is with the oxide of iron and copper for main activated centre.
The catalyst is FeO-CuO-ZrO2Or FeO-CuO-CeO2-ZrO2Catalyst.
The catalyst is FeO-CuO-MnO2-Al2O3Or FeO-CuO-ZnO-Al2O3Catalyst.
The nitrogen oxides is NO, NO2、N2O、N2O5At least one of.
The auxiliary gas is one of air, oxygen, nitrogen.
The auxiliary gas is nitrogen.
The reaction temperature is 250 ~ 500 DEG C.
The reaction pressure is 0.1 ~ 5MPa.
While capable of converting nitrogen oxides to nitrogen using the method for the present invention, convert hydrogen chloride gas to useful Chlorine realizes recycling for chlorine resource again while denitration.
Specific embodiment
Embodiment below is not limitation of the present invention for the contents of the present invention to be explained further.
Embodiment 1
Inside in the fixed bed reaction pipe through being 30mm, 50mL FeO-CuO-ZrO is loaded2Catalyst is 300 in reaction temperature DEG C and pressure be 0.1MPa under, by molar ratio be 2:1 NO, HCl gaseous mixture with volume space velocity for 10000h-1Pass through catalyst bed Layer, after reacting 10h, measuring is mainly N in product gas2、Cl2And H2O, also NO and HCl containing volume composition 1%.
Embodiment 2
Inside in the fixed bed reaction pipe through being 30mm, 50mL FeO-CuO-ZrO is loaded2Catalyst is 300 in reaction temperature DEG C and pressure be 1MPa under, by molar ratio be 4:1:0.5 NO2, HCl and O2Gaseous mixture is 10000h with volume space velocity-1Pass through Catalyst bed, after reacting 10h, measuring is mainly N in product gas2、Cl2And H2O, the also NO containing volume composition 5%2And HCl.
Embodiment 3
Inside in the fixed bed reaction pipe through being 30mm, 50mL FeO-CuO-MnO is loaded2-Al2O3Catalyst, in reaction temperature It is the N for being 2:1:1 by molar ratio under 3MPa for 400 DEG C and pressure2O, HCl and air Mixture are 10000h with volume space velocity-1 By catalyst bed, after reacting 10h, measuring is mainly N in product gas2、Cl2And H2O, the also N containing volume composition 0.5%2O And HCl.
Embodiment 4
Inside in the fixed bed reaction pipe through being 30mm, 50mL FeO-CuO-MnO is loaded2-Al2O3Catalyst, in reaction temperature It is the N for being 5:1:1 by molar ratio under 3MPa for 400 DEG C and pressure2O5, HCl and nitrogen mixture with volume space velocity be 10000h-1By catalyst bed, after reacting 10h, measuring is mainly N in product gas2、Cl2And H2O, the also N containing volume composition 1%2O5 And HCl.
Embodiment 5
Inside in the fixed bed reaction pipe through being 30mm, 50mL FeO-CuO-MnO is loaded2-Al2O3Catalyst, in reaction temperature It is the N for being 5:1:1 by molar ratio under 5MPa for 400 DEG C and pressure2O5, HCl and air Mixture with volume space velocity be 10000h-1By catalyst bed, after reacting 10h, measuring is mainly N in product gas2、Cl2And H2O, the also N containing volume composition 2%2O5 And HCl.
Embodiment 6
Inside in the fixed bed reaction pipe through being 30mm, 50mL FeO-CuO-CeO is loaded2-ZrO2Catalyst, in reaction temperature Be under 5MPa for 250 DEG C and pressure, by molar ratio be 2:1 NO, HCl gaseous mixture with volume space velocity for 10000h-1Pass through catalysis Agent bed, after reacting 10h, measuring is mainly N in product gas2、Cl2And H2O, also NO and HCl containing volume composition 2%.
Embodiment 7
Inside in the fixed bed reaction pipe through being 30mm, 50mL FeO-CuO-ZnO-Al is loaded2O3Catalyst, in reaction temperature It is the N for being 2:1:1 by molar ratio under 5MPa for 500 DEG C and pressure2O, HCl and air Mixture are 10000h with volume space velocity-1 By catalyst bed, after reacting 10h, measuring is mainly N in product gas2、Cl2And H2O, the also N containing volume composition 1%2O and HCl。

Claims (10)

1. a kind of NO_x elimination method, which is characterized in that in fixed bed reactors, by nitrogen oxides, hydrogen chloride and auxiliary By catalyst bed after helping gas to preheat, under reaction temperature and pressure, nitrogen, chlorine and water are generated.
2. the method as described in claim 1, it is characterised in that nitrogen oxides, hydrogen chloride and auxiliary gas are with volume space velocity 10000h-1Pass through catalyst bed.
3. the method as described in claim 1, it is characterised in that catalyst is with the oxide of iron and copper for main activated centre.
4. method as claimed in claim 3, it is characterised in that catalyst FeO-CuO-ZrO2Or FeO-CuO-CeO2-ZrO2 Catalyst.
5. method as claimed in claim 3, it is characterised in that catalyst FeO-CuO-MnO2-Al2O3Or FeO-CuO-ZnO- Al2O3Catalyst.
6. the method as described in claim 1, it is characterised in that the nitrogen oxides is NO, NO2、N2O、N2O5In at least one Kind.
7. the method as described in claim 1, it is characterised in that the auxiliary gas is one of air, oxygen, nitrogen.
8. the method for claim 7, it is characterised in that the auxiliary gas is nitrogen.
9. the method as described in claim 1, it is characterised in that the reaction temperature is 250 ~ 500 DEG C.
10. the method as described in claim 1, it is characterised in that the reaction pressure is 0.1 ~ 5MPa.
CN201810506780.5A 2018-05-24 2018-05-24 A kind of NO_x elimination method Pending CN110523265A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115400756A (en) * 2022-09-09 2022-11-29 郑州轻工业大学 Non-noble metal catalyst for removing high-concentration laughing gas at low temperature and preparation method and application thereof

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5179058A (en) * 1988-12-17 1993-01-12 Bergwerksverband Gmbh Process for manufacturing a carbonaceous catalyst for the reduction of nitrogen oxides in exhaust gases
CN1546231A (en) * 2003-12-09 2004-11-17 南化集团研究院 Catalyst for removing nitrogen oxide through selective catalytic reduction and its preparation method
WO2006135074A1 (en) * 2005-06-13 2006-12-21 Sumitomo Chemical Company, Limited Method for producing oxidation catalyst, method for producing chlorine, and method for oxidizing carbon monoxide and/or unsaturated hydrocarbon
CN101912783A (en) * 2010-08-31 2010-12-15 西南化工研究设计院 Catalyst for combustion of ventilation air methane and preparation method thereof
CN102962073A (en) * 2012-12-06 2013-03-13 辽宁科隆精细化工股份有限公司 Catalyst for directly decomposing N2O and preparation method of catalyst
CN105170150A (en) * 2015-10-12 2015-12-23 重庆科技学院 Supported metallic oxide catalyst for assisting microwave denitration and preparation method and using method thereof
CN105381801A (en) * 2015-11-12 2016-03-09 开滦（集团）有限责任公司 Catalyst capable of directly catalytically decomposing N2O
CN105688894A (en) * 2016-03-30 2016-06-22 西安交通大学 Preparation method and use method of manganite catalyst applied to catalytic decomposition of nitrogen oxides at low temperature
CN107952436A (en) * 2016-10-14 2018-04-24 中国石油化工股份有限公司 A kind of preparing chlorine by oxidizing hydrogen chloride copper-zirconium based catalyst and its preparation method and application

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5179058A (en) * 1988-12-17 1993-01-12 Bergwerksverband Gmbh Process for manufacturing a carbonaceous catalyst for the reduction of nitrogen oxides in exhaust gases
CN1546231A (en) * 2003-12-09 2004-11-17 南化集团研究院 Catalyst for removing nitrogen oxide through selective catalytic reduction and its preparation method
WO2006135074A1 (en) * 2005-06-13 2006-12-21 Sumitomo Chemical Company, Limited Method for producing oxidation catalyst, method for producing chlorine, and method for oxidizing carbon monoxide and/or unsaturated hydrocarbon
CN101912783A (en) * 2010-08-31 2010-12-15 西南化工研究设计院 Catalyst for combustion of ventilation air methane and preparation method thereof
CN102962073A (en) * 2012-12-06 2013-03-13 辽宁科隆精细化工股份有限公司 Catalyst for directly decomposing N2O and preparation method of catalyst
CN105170150A (en) * 2015-10-12 2015-12-23 重庆科技学院 Supported metallic oxide catalyst for assisting microwave denitration and preparation method and using method thereof
CN105381801A (en) * 2015-11-12 2016-03-09 开滦（集团）有限责任公司 Catalyst capable of directly catalytically decomposing N2O
CN105688894A (en) * 2016-03-30 2016-06-22 西安交通大学 Preparation method and use method of manganite catalyst applied to catalytic decomposition of nitrogen oxides at low temperature
CN107952436A (en) * 2016-10-14 2018-04-24 中国石油化工股份有限公司 A kind of preparing chlorine by oxidizing hydrogen chloride copper-zirconium based catalyst and its preparation method and application

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
张统主编: "《航天发射污染控制》", 28 February 2013, 国防工业出版社 *
马振华编著: "《烷基苯磺酸钠洗衣粉的生产》", 31 July 1980, 轻工业出版社 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115400756A (en) * 2022-09-09 2022-11-29 郑州轻工业大学 Non-noble metal catalyst for removing high-concentration laughing gas at low temperature and preparation method and application thereof
CN115400756B (en) * 2022-09-09 2023-09-19 郑州轻工业大学 Non-noble metal catalyst for removing high-concentration laughing gas at low temperature and preparation method and application thereof

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