KR930016134A - Treatment method of combustion exhaust gas - Google Patents

Treatment method of combustion exhaust gas Download PDF

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KR930016134A
KR930016134A KR1019930000489A KR930000489A KR930016134A KR 930016134 A KR930016134 A KR 930016134A KR 1019930000489 A KR1019930000489 A KR 1019930000489A KR 930000489 A KR930000489 A KR 930000489A KR 930016134 A KR930016134 A KR 930016134A
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exhaust gas
carbon dioxide
combustion exhaust
aqueous solution
recovering
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KR1019930000489A
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Korean (ko)
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마스미 후지이
타이이치로 수다
요시쯔구 훗타
켄지 코바야시
쿠니히코 요시다
시게루 시모죠
코오이치 키타무라
마사미 카와사키
무쯔노리 카라사키
마사키 이이지마
토우루 세토
시게아키 미쯔오카
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아끼야마 요시히사
칸사이덴료꾸 가부시기가이샤
코오노 미찌아끼
미쯔비시주우고오교오 가부시기가이샤
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Publication of KR930016134A publication Critical patent/KR930016134A/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
    • B01D53/14—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 by absorption
    • B01D53/1456—Removing acid components
    • B01D53/1475—Removing carbon dioxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/06—Spray cleaning
    • B01D47/063—Spray cleaning with two or more jets impinging against each other
    • 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
    • B01D53/14—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 by absorption
    • B01D53/1406—Multiple stage absorption
    • 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
    • B01D53/14—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 by absorption
    • B01D53/1418—Recovery of products
    • 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
    • B01D53/14—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 by absorption
    • B01D53/1493—Selection of liquid materials for use as absorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/54—Nitrogen compounds
    • B01D53/56—Nitrogen oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77—Liquid phase processes
    • B01D53/78—Liquid phase processes with gas-liquid contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/20—Reductants
    • B01D2251/206—Ammonium compounds
    • B01D2251/2062—Ammonia
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/80—Organic bases or salts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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
    • Y02C20/40—Capture or disposal of greenhouse gases of CO2

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Treating Waste Gases (AREA)
  • Gas Separation By Absorption (AREA)

Abstract

본 발명은 알칸올아민 수용액을 사용해서 연소배기가스중에 함유되는 CO2를 흡수해서 회수하는 CO2의 회수방법에 있어서, CO2흡수후의 처리배기가스와 CO2를 함유한 물을 접촉시켜, 그 접촉수를 계바깥으로 배출하도록한 CO2의 회수방법. 환원제로서 NH3을 사용하는 연소배기가스의 탈질산공정 및 연소배기가스와 알칸올아민수용액을 접촉시켜 연소배기가스중에 함유되는 CO2를 제거하는 탈 CO2공정을 가진 연소배기가스의 처리방법에 있어서, 알칸올아민수용액과 접촉시킨 탈 CO2처리연소배기가스중에 함유되는 암모니아를 회수해서 상기 탈질산공정의 환원제로서 사용하도록한 연소배기가스의 처리방법과, 연소배기가스와 모노에탄올아민수용액을 상압하에서 접촉시켜, 연소배기가스중에 함유되는 CO2를 제거하는 탈 CO2방법에 있어서, 농도 35중량%이상의 모노에탄올 수용액을 사용하도록한 연소배기가스의 탈 CO2방법을 제공하는 것이다.The present invention relates to a method for recovering CO 2 recovering to absorb the CO 2 contained in the combustion exhaust gas using an alkanolamine solution, it is brought into contact with water containing a processing exhaust gas and CO 2 and after CO 2 absorption, the contact A method for recovering CO 2 that allows water to be discharged out of the system. In the method for treating combustion exhaust gas having a denitrification step of combustion exhaust gas using NH 3 as a reducing agent and a de-CO 2 process for removing CO 2 contained in the combustion exhaust gas by contacting the combustion exhaust gas with an alkanolamine aqueous solution. The combustion exhaust gas treatment method for recovering ammonia contained in the de-CO 2 treated combustion exhaust gas contacted with the amine aqueous solution and using it as a reducing agent in the denitrification process, and the combustion exhaust gas and the monoethanolamine aqueous solution are brought into contact with each other under normal pressure to produce a combustion exhaust gas. in the de-CO 2 to remove CO 2 contained in the method, to provide a method of de-CO 2 combustion exhaust gas to use a concentration of at least 35% by weight monoethanolamine aqueous solution.

Description

연소배기가스의 처리방법Treatment method of combustion exhaust gas

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명의 제1에스펙트(Aspect)의 CO2회수방법에서 채용하는 과정의 일시시태양을 설명하기 위한 개략도. 제2도는 본 발명의 제2애스펙트의 방법이 적용되는 연소배기가스의 처기공정의 일예를 표시한 다이어그램, 제3도는 본 발명의 제2애스펙트의 방법이 적용되는 CO2공정의 일예를 표시한 개략도.1 is a schematic view for explaining the temporal aspect of the process employed in the method of recovering CO 2 of the first aspect of the present invention. FIG. 2 is a diagram showing an example of a process of disposing combustion exhaust gas to which the method of the second aspect of the present invention is applied, and FIG. 3 is a schematic diagram showing an example of a CO 2 process to which the method of the second aspect of the present invention is applied.

Claims (8)

알칸올아민수용액을 사용해서 연소배기가스중에 함유되는 2산화탄소를 흡수해서 회수하는 2산화탄소의 회수방법에 있어서, 2산화탄소를 홀수에 의해 제거한 후의 배기가스를 2산화탄소를 함유한 물에 접촉시키는 것을 특징으로 하는 2산화탄소의 회수방법.In a method for recovering carbon dioxide, which absorbs and recovers carbon dioxide contained in combustion exhaust gas using an alkanolamine aqueous solution, the exhaust gas after removing carbon dioxide by an odd number is brought into contact with water containing carbon dioxide. Carbon dioxide recovery method characterized in that. 제1항에 있어서, 2산화탄소를 함유한 물로서 연소배기가스의 냉각응축수 또는 연소배기가스와 접촉시킨 냉각수를 2산화탄소흡수탑의 탑정상에 공급하고, 2산화탄소를 흡수에 의해 제거한 후의 배기가스와 접촉시키는 것을 특징으로 하는 2산화탄소의 회수방법.The exhaust gas according to claim 1, wherein the water containing carbon dioxide is supplied to the cooling condensate of the combustion exhaust gas or the cooling water contacted with the combustion exhaust gas on the top of the carbon dioxide absorption tower, and carbon dioxide is removed by absorption. The method of recovering carbon dioxide, characterized in that in contact with. 환원제로서 암모니아를 사용하는 연소배기가스의 탈질산공정 및 연소배기가스와 알칸올아민수용액을 접촉시켜서 연소배기가스중에 함유되는 2산화탄소를 제거하는 탈 2산화탄소공정을 가진 연소배기가스의 처리방법에 있어서, 알칸올아민수용액과 접촉시킨 2산화탄소를 흡수에 의해 제거한 연소배기가스중에 함유되는 암모니아를 회수해서 상기 탈질산공정의 환원제로서 사용하는 것을 특징으로 하는 연소배기가스의 처리방법.In the method for treating combustion exhaust gas having a denitrification step of combustion exhaust gas using ammonia as a reducing agent and a decarbonation step of removing carbon dioxide contained in the combustion exhaust gas by contacting the combustion exhaust gas with an alkanolamine aqueous solution. A method for treating combustion exhaust gas, characterized by recovering ammonia contained in combustion exhaust gas from which carbon dioxide contacted with an aqueous amine solution is removed by absorption and using as a reducing agent in the denitrification step. 환원제로서 암모니아를 사용하는 연소배기가스의 탈질산공정 및 연소배기가스와 알칸올아민수용액을 접촉시켜서 연소배기가스중에 함유되는 2산화탄소를 제거하는 탈2산화탄소공정을 가진 연소배기가스의 처리방법에 있어서, 상기 탈2산화탄소공정으로 부터 배출된 2산화탄소를 흡수한 알칸올아민수용액으로 부터 2산화탄소를 분리하여 상기 알칸올아민수용액을 재생하는 재생공정과, 상기 재생공정에서 분리된 2산화탄소와 그것에 동반하는 수증기를 냉각하는 냉각공정으로 이루어지고, 상기 냉각공정에서 발생한 환류수의 적어도 일부를 상기 재생공정에 공급하고, 나머지를 상기 탈 2산화탄소공정에 공급하는 것을 특징으로 하는 연소배기가스의 처리방법.A process for treating a combustion exhaust gas having a denitrification step of a combustion exhaust gas using ammonia as a reducing agent and a decarbonation step for removing carbon dioxide contained in the combustion exhaust gas by contacting the combustion exhaust gas with an alkanolamine aqueous solution. A regeneration step of regenerating the alkanolamine aqueous solution by separating carbon dioxide from an alkanolamine aqueous solution absorbing carbon dioxide discharged from the decarbonation step, and carbon dioxide separated from the regeneration step, and And a cooling step of cooling the accompanying steam, wherein at least a part of reflux water generated in the cooling step is supplied to the regeneration step, and the remainder is supplied to the decarbonation step. . 알칸올아민 수용액을 사용해서 연소배기가스중에 함유된 2산화탄소를 흡수해서 회수하는 탈 2산화탄소공정을 포함한 2산화탄소의 회수방법에 있어서, 2산화탄소를 흡수에 의해 제거한 후의 배기가스를 2산화탄소를 함유한 물에 접촉시키는 2산화탄소 함유수접촉공정과, 상기 탈 2산화탄소공정으로 부터 배출된 2산화탄소를 흡수한 알칸올아민수용액으로부터 2산화탄소를 분리하여 상기 알칸올아민수용액을 재생하는 재생공정과, 상기 재생공정에서 분리된 2산화탄소와 그것에 동반하는 수증기를 냉각하는 냉각공정으로 이루어지고, 상기 냉각공정에서 발생한 환류수의 적어도 일부를 상기 재생공정에 공급하고 나머지를 상기 탈 2산화탄소공정에 공급하는 것을 특징으로 하는 2산화탄소의 회수방법.A method for recovering carbon dioxide, including a decarbonation step of absorbing and recovering carbon dioxide contained in combustion exhaust gas using an aqueous alkanolamine solution, wherein the exhaust gas after carbon dioxide has been removed by absorption is subjected to oxidation. The alkanolamine aqueous solution was separated by separating carbon dioxide from a carbon dioxide-containing water contacting step of contacting carbon-containing water and an aqueous alkanolamine solution absorbing carbon dioxide discharged from the decarbonation step. A regeneration process for regenerating and a cooling process for cooling the carbon dioxide separated in the regeneration process and water vapor accompanying thereto, wherein at least a portion of the reflux water generated in the cooling process is supplied to the regeneration process, and the rest is removed. A method for recovering carbon dioxide, characterized in that it is supplied to a carbon dioxide process. 제5항에 있어서, 2산화탄소를 함유한 물로서, 연소배기가스의 냉각응축수 또는 연소배기가스와 접촉시킨 냉각수를 상기 탈 2산화탄소공정을 행하는 반응탑의 정상부에 공급하는 것을 특징으로 하는 2산화탄소의 회수방법.6. The carbon dioxide as claimed in claim 5, wherein the water containing carbon dioxide is supplied to the condensate of the combustion exhaust gas or the cooling water in contact with the combustion exhaust gas to the top of the reaction column in which the decarbonization process is performed. How to recover. 연소배기가스와 모노에탄올아민수용액을 상압하에서 접촉시켜, 연소배기가스중에 함유되는 2산화탄소를 흡수제거하는 2산화탄소의 회수방법에 있어서, 농도 35중량% 이상의 모노에탄올아민수용액을 사용하는 것을 특징으로 하는 연소배기가스로 부터의 2산화탄소의 회수방법.A method for recovering carbon dioxide in which a combustion exhaust gas is brought into contact with an aqueous solution of monoethanolamine under normal pressure to absorb and remove carbon dioxide contained in the combustion exhaust gas, characterized by using an aqueous solution of monoethanolamine having a concentration of 35% by weight or more. Recovery of carbon dioxide from combustion exhaust gas. 제7항에 있어서, 2산화탄소를 흡수에 의해 제거한 후의 배기가스를 2산화탄소를 함유하는 물에 접촉시키는 것을 특징으로 하는 연소배기가스로 부터의 2산화탄소의 회수방법.The method for recovering carbon dioxide from combustion exhaust gas according to claim 7, wherein the exhaust gas after carbon dioxide has been removed by absorption is brought into contact with water containing carbon dioxide. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930000489A 1992-01-17 1993-01-15 Treatment method of combustion exhaust gas KR930016134A (en)

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JP92-64660 1992-01-17
JP4006466A JP2786559B2 (en) 1992-01-17 1992-01-17 Method for recovering carbon dioxide from flue gas

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