KR930007494A - Exhaust gas denitrification method and apparatus - Google Patents

Exhaust gas denitrification method and apparatus Download PDF

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Publication number
KR930007494A
KR930007494A KR1019920018872A KR920018872A KR930007494A KR 930007494 A KR930007494 A KR 930007494A KR 1019920018872 A KR1019920018872 A KR 1019920018872A KR 920018872 A KR920018872 A KR 920018872A KR 930007494 A KR930007494 A KR 930007494A
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exhaust gas
ammonia
combustion engine
internal combustion
measuring
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KR1019920018872A
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Korean (ko)
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KR100220447B1 (en
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도시쯔구 사세
미찌아끼 마쓰다
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후지무라 히로유끼
가부시기가이샤 에바라 세이사꾸쇼
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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
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
    • B01D53/504—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
    • 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
    • B01D53/38—Removing components of undefined structure

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Treating Waste Gases (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Abstract

본 발명은 질소 산화물 환원제인 암모니아를, 배기가스를 외부로 방출하기 위한 배기가스 덕트의 중간부분에 설치된 암모니아 공급장치로부터 내연 엔진에서 나오는 배기가스에 공급하고, 내연 엔진 연소용 흡입공기이 절대습도 및/또는 온도를 암모니아 공급장치로부터 하류에 설치한, 절대습도 측정장치 및/또는 온도 측정장치를 측정하고 상기 측정장치(또는 측정장치들)로 부터 수신된 신호(또는 신호들)를 조절장치로 보내어 암모니아 공급장치에서의 암모니아 공급 속도를 조절하는 배기가스 탈질방법 및 장치에 관한 것이다.The present invention supplies ammonia, a nitrogen oxide reducing agent, to the exhaust gas from the internal combustion engine from an ammonia supply device installed in the middle of the exhaust gas duct for releasing the exhaust gas to the outside, and the intake air for combustion of the internal combustion engine is subjected to absolute humidity and //. Or by measuring the absolute humidity measuring device and / or the temperature measuring device, the temperature of which is installed downstream from the ammonia supply, and sending the signal (or signals) received from the measuring device (or measuring devices) to the controller. An exhaust gas denitrification method and apparatus for controlling ammonia feed rate in a feeder.

Description

배기가스 탈질(脫窒)방법 및 장치Exhaust gas denitrification method and apparatus

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 일실시태양에 있어서의 배기가스 탈질장치의 개략도.1 is a schematic diagram of an exhaust gas denitrification apparatus according to one embodiment of the present invention.

제2도는 배기가스중의 질소 산화물 농도와 연소용 흡입공기의 절대습도와의 관계를 나타낸 그래프.2 is a graph showing the relationship between the concentration of nitrogen oxides in the exhaust gas and the absolute humidity of the intake air for combustion.

Claims (6)

내연엔진에서 나오는 배기 가스를 질소 산화물 환원제로서 암모니아와 함께 배기가스를 외부로 배출시키기 위한 배기가스 덕트의 중간부분에 도입하고, 암모니아와 함께 도입된 배기가스를 질소 산화물 제거용 촉매에 통과시켜 이들이 반응하도록 하는 배기가스 탈질 방법에 있어서, 가변요인의 하나로서 내연엔진의 연소용 흡입공기의 절대습도를 사용하여 암모니아를 배기가스에 공급하는 속도를 조절하는 것을 포함하여 이루어지는 배기가스 탈질방법.The exhaust gas from the internal combustion engine is introduced into the middle of the exhaust gas duct for exhausting the exhaust gas to the outside together with ammonia as a nitrogen oxide reducing agent, and the exhaust gas introduced with the ammonia is passed through a catalyst for removing nitrogen oxides to react them. An exhaust gas denitrification method comprising: controlling a rate at which ammonia is supplied to exhaust gas by using an absolute humidity of combustion air for combustion of an internal combustion engine as one of the variable factors. 제1항에 있어서, 암모니아를 배기가스를 공급하는 속도를 가변요인으로서 내연엔진의 연소용 흡입공기의 온도를 사용하여 더 조절하는 배기가스 탈질방법.The exhaust gas denitrification method according to claim 1, wherein the rate of supplying the exhaust gas to ammonia is further controlled by using the temperature of the combustion suction air of the internal combustion engine as a variable factor. 내연엔진에서 나오는 배기가스를 질소 산화물 환원제로서 암모니아와 함께 배기가스를 외부로 배출하기 위한 배기가스 덕트의 중간부분에 도입하고, 암모니아와 함께 도입된 배기가스를 질소산화물 제거용 촉매를 통과시켜 이들이 반응하도록 하는 배기가스 탈질방법에 있어서, 가변요인의 하나로서 내연엔진의 연소용 흡입공기의 온도를 사용하여 암모니아를 배기가스에 공급하는 속도를 조절하는 것을 포함하여 이루어지는 배기가스 탈질방법.The exhaust gas from the internal combustion engine is introduced into the middle of the exhaust gas duct for exhausting the exhaust gas to the outside with ammonia as a nitrogen oxide reducing agent, and the exhaust gas introduced together with the ammonia is passed through a catalyst for removing nitrogen oxides to react them. An exhaust gas denitrification method comprising adjusting the rate at which ammonia is supplied to the exhaust gas using a temperature of combustion intake air of an internal combustion engine as one of the variable factors. 내연엔진에서 나오는 배기가스를 외부로 배출하기 위한 배기가스 덕트의 중간부분에, 질소 산화물 환원제로서 암모니아를 공급하기 위해 설치된 장치와, 그리고 암모니아 공급장치로부터 하류에 설치된, 질소 산화물 제거용 촉매를 함유한 반응기를 포함하는 배기가스 탈질 장치에 있어서, 내연엔진의 연소용 흡입공기의 절대습도를 측정하는 장치와, 이 측정장치로부터 수신된 신호에 의거하여 암모니아 공급장치에서 암모니아 공급속도를 조절하는 장치를 포함하여 이루어지는 배기가스 탈질장치.In the middle of the exhaust gas duct for exhausting the exhaust gas from the internal combustion engine to the outside, a device installed for supplying ammonia as a nitrogen oxide reducing agent, and a catalyst for nitrogen oxide removal installed downstream from the ammonia supply device An exhaust gas denitrification apparatus including a reactor, the apparatus comprising: an apparatus for measuring the absolute humidity of combustion intake air for an internal combustion engine; and an apparatus for adjusting the ammonia supply rate in the ammonia supply apparatus based on a signal received from the measuring apparatus. Exhaust gas denitrification apparatus. 제4항에 있어서, 내연기관의 연소용 흡입공기의 온도를 측정하는 장치와, 습도 측정장치 및 온도 측정장치로부터 수신된 신호에 의거하여 암모니아 공급속도를 조절하도록 조절장치가 추가로 설치된, 배기가스 탈질장치.The exhaust gas according to claim 4, further comprising an apparatus for measuring the temperature of the combustion intake air for combustion of the internal combustion engine, and a regulator for adjusting the ammonia supply rate based on signals received from the humidity measuring device and the temperature measuring device. Denitrification apparatus. 내연엔진에서 나오는 배기가스를 외부로 배출하기 위한 배기가스 덕트의 중간부분에, 질소산화물 환원제로서 암모니아를 공급하기 위해 설치된 장치와, 그리고 암모니아 공급 장치로부터 하류에 설치된, 질소 산화물 제거용 촉매를 함유한 반응기를 포함하는 배기가스 탈질장치에 있어서, 내연엔진의 연소용 흡입공기의 온도를 측정하는 장치와, 이 측정장치로부터 수신된 신호에 의거하여 암모니아 공급장치에서 암모니아 공급속도를 조절하기 위한 장치를 포함하여 이루어지는 배기가스 탈질장치.In the middle of the exhaust gas duct for exhausting the exhaust gas from the internal combustion engine to the outside, a device installed for supplying ammonia as a nitrogen oxide reducing agent, and a catalyst for nitrogen oxide removal installed downstream from the ammonia supply device An exhaust gas denitrification apparatus comprising a reactor, the apparatus comprising: a device for measuring the temperature of combustion air for combustion of an internal combustion engine; and a device for adjusting the ammonia supply rate in the ammonia supply device based on a signal received from the measurement device. Exhaust gas denitrification apparatus. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920018872A 1991-10-14 1992-10-14 Exhaust gas denitration method and apparatus therefor KR100220447B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP91-291863 1991-10-14
JP3291863A JPH05103951A (en) 1991-10-14 1991-10-14 Exhaust gas-denitrating method and device therefor

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KR100220447B1 KR100220447B1 (en) 1999-09-15

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100515044B1 (en) * 2000-12-12 2005-09-14 주식회사 포스코 Apparatus for reducing nitrogen oxide in the waste gas of sinter machine
KR101470784B1 (en) * 2011-05-18 2014-12-08 스미도모쥬기가이고교 가부시키가이샤 Denitrator and denitration method
KR20220138785A (en) * 2021-03-25 2022-10-13 에스엠씨케미칼(주) Reduction agent for denitrification

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003065037A (en) * 2001-08-30 2003-03-05 Miura Co Ltd Control method for denitration device
JP3718209B2 (en) * 2003-10-03 2005-11-24 日産ディーゼル工業株式会社 Engine exhaust purification system
CN100416054C (en) * 2003-10-22 2008-09-03 日产柴油机车工业株式会社 Engine controller and engine operating method
JP3687915B2 (en) * 2003-10-27 2005-08-24 日産ディーゼル工業株式会社 Liquid discrimination device
JP3687916B2 (en) * 2003-10-28 2005-08-24 日産ディーゼル工業株式会社 Engine exhaust purification system
JP3687917B2 (en) * 2003-10-31 2005-08-24 日産ディーゼル工業株式会社 Liquid reducing agent concentration and remaining amount detection device
CN100377762C (en) * 2005-01-13 2008-04-02 辽宁省燃烧工程技术中心 Method and special system for removing nitrogen oxide from flume gas of coal-burning power station
DE102006047019A1 (en) * 2006-10-02 2008-04-03 Emitec Gesellschaft Für Emissionstechnologie Mbh Exhaust gas system's reduction agent containing gas flow providing method for internal combustion engine, involves adding reduction agent containing gas flow to exhaust gas of internal combustion engine
DE102007046460A1 (en) * 2007-09-28 2009-04-02 Daimler Ag A method for reducing the emission of nitrogen dioxide in a motor vehicle with a lean-burn engine
JP4764463B2 (en) * 2008-09-22 2011-09-07 株式会社日本自動車部品総合研究所 Exhaust gas purification control device and exhaust gas purification system for internal combustion engine
CN101530740B (en) * 2009-03-17 2012-07-25 山东丰元化学股份有限公司 Process for treating tail gas generated by producing oxalic acid
US8459243B2 (en) * 2009-07-31 2013-06-11 Ford Global Technologies, Llc Method, systems and sensor for detecting humidity
JP6032985B2 (en) * 2012-07-18 2016-11-30 大阪瓦斯株式会社 Reducing agent injection device and denitration device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5633025A (en) * 1979-08-28 1981-04-03 Babcock Hitachi Kk Control method for injection quantity of ammonia
DE3704030A1 (en) * 1987-02-10 1988-08-18 Ruhrgas Ag Process for separating off nitrogen oxides from exhaust gases by selective catalytic reduction
JPS647930A (en) * 1987-06-30 1989-01-11 Mitsubishi Heavy Ind Ltd Method for denitrating exhaust gas from internal-combustion engine
JP2551173B2 (en) * 1989-12-05 1996-11-06 株式会社新潟鐵工所 Denitrification method for internal combustion engine exhaust gas
JP3175112B2 (en) * 1992-07-29 2001-06-11 株式会社ニコン Charged particle beam exposure method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100515044B1 (en) * 2000-12-12 2005-09-14 주식회사 포스코 Apparatus for reducing nitrogen oxide in the waste gas of sinter machine
KR101470784B1 (en) * 2011-05-18 2014-12-08 스미도모쥬기가이고교 가부시키가이샤 Denitrator and denitration method
KR20220138785A (en) * 2021-03-25 2022-10-13 에스엠씨케미칼(주) Reduction agent for denitrification

Also Published As

Publication number Publication date
KR100220447B1 (en) 1999-09-15
CN1090047C (en) 2002-09-04
JPH05103951A (en) 1993-04-27
CN1071852A (en) 1993-05-12
CN1206624A (en) 1999-02-03
CN1041172C (en) 1998-12-16

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