[특허]Use of a molecular sieve bed to minimize emissions during cold start of internal combustion engines

Use of a molecular sieve bed to minimize emissions during cold start of internal combustion engines 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01D-053/36
출원번호	US-0556149 (1990-07-20)
발명자 / 주소	Dunne Stephen R. (Bethel CT) Reber Raymond A. (Montrose NY)
출원인 / 주소	UOP (Des Plaines IL 02)
인용정보	피인용 횟수 : 44 인용 특허 : 0

초록 ▼

This invention relates to a process for treating an engine exhaust gas stream. The process involves first flowing the engine exhaust stream, which is relatively cool, over an adsorbent zone which comprises an adsorbent bed, i.e., a molecular sieve bed, capable of preferentially adsorbing pollutants such as hydrocarbons. This provides a first exhaust stream which is flowed over a primary castalyst which converts the pollutants to innocuous compounds and then discharging the resultant treated exhaust stream to the atmosphere. When the adsorbent bed reaches a temperature of about 150°C., the entire engine exhaust stream is completely diverted over the primary catalyst. When the inlet temperature to the primary catalyst has reached about 350°C., a minor portion of the engine exhaust stream is diverted over the adsorbent bed to desorb the pollutants adsorbed on the bed and carry them over the primary catalyst where they are converted to innocuous components. After a certain amount of time, the entire engine exhaust stream is again diverted over the primary catalyst, thereby isolating the adsorbent bed to minimize deterioration. The adsorbent zone may also have a secondary catalyst bed arranged immediately after it.

대표청구항 ▼

A process for treating an engine exhaust gas stream containing hydrocarbons and other pollutants comprising directing the engine exhaust gas stream over an adsorbent zone comprising a molecular sieve bed which preferentially adsorbs the hydrocarbons over water, to provide a first exhaust stream, flowing the first exhaust stream over a primary catalyst to convert substantially all the pollutants contained in the first exhaust stream to innocuous products, thereby providing a treated exhaust gas stream and discharging the treated exhaust stream into the atmosphere, said process being carried out for a time until the molecular sieve bed temperature is about 150°C., at which time the engine exhaust gas stream is diverted completely away from the adsorbent zone and routed directly over the primary catalyst until such time as the primary catalyst reaches its operating temperature, at which time the engine exhaust gas stream is divided into a major and minor portion, flowing the major portion of the engine exhaust gas stream over the primary catalyst and then discharging the treated exhaust gas stream from the primary catalyst into the atmosphere, flowing the minor portion of the engine exhaust gas stream over the adsorbent zone for a time sufficient to desorb substantially all the hydrocarbons adsorbed on the molecular sieve bed and provide a second exhaust gas stream containing desorbed hydrocarbons, flowing the second exhaust stream over the primary catalyst to provide a treated exhaust stream and discharging the treated exhaust stream to the atmosphere and after such time as necessary to desorb substantially all the hydrocarbons from the molecular sieve bed, the engine exhaust gas stream is completely directed over the primary catalyst to provide a treated exhaust stream and then discharging the treated exhaust stream to the atmosphere; the molecular sieve characterized in that it is selected from the group consisting of molecular sieves which have: 1) a framework Si:Al ratio of at least 2.4; 2) are hydrothermally stable; and 3) have a hydrocarbon selectivity (a2O) greater than 1 where a2O is defined by the following equation: [Figure] where XHC is the hydrocarbon co-loading on the molecular sieves in equilibrium with the hydrocarbon water vapor mixture in the gas phase over the molecular sieve adsorbent; XH2O is the water co-loading on the zeolite in equilibrium with the water and hydrocarbon vapor mixture in the gas phase over the molecular sieve adsorbent; [H2O]is the concentration of water and [HC]is the concentration of hydrocarbon.

이 특허를 인용한 특허 (44)

Webb Cynthia Chaffin, Active porous medium aftertreatment control system.
상세보기
Hochmuth John K., Air injection strategies for effectively burning hydrocarbons released from a hydrocarbon trap.
상세보기
Kharas Karl C. C., Catalyst support having zeolite with high sodium back ion-exchange capacity and catalysts made therefrom.
상세보기
Hoke, Jeffrey Barmont; Buelow, Mark Thomas; Kauffman, John Joseph, Coated screen adsorption unit for controlling evaporative hydrocarbon emissions.
상세보기
Ansell Graham Paul,GBX ; Fisher Janet Mary,GBX ; Gray Peter Geoffrey,GBX ; Hamilton Hugh Gavin Charles,GBX ; Rajaram Raj Rao,GBX, Diesel engine exhaust gas purification method.
상세보기
Kazuhiro Sakurai JP; Takashi Watanabe JP, Emission control apparatus and method of internal combustion engine.
상세보기
Matros Yurii Sh. ; Bunimovich Grigorii A. ; Strots Vadim O., Emission control system.
상세보기
Wan, Chung-Zong; Zheng, Xiaolai; Stiebels, Susanne; Wendt, Claudia; Neubauer, Torsten; Boorse, R. Samuel, Emissions treatment system with ammonia-generating and SCR catalysts.
상세보기
Wan, Chung-Zong; Zheng, Xiaolai; Stiebels, Susanne; Wendt, Claudia; Neubauer, Torsten; Boorse, R. Samuel, Emissions treatment system with ammonia-generating and SCR catalysts.
상세보기
Wan, Chung-Zong; Zheng, Xiaolai; Stiebels, Susanne; Wendt, Claudia; Neubauer, Torsten; Boorse, R. Samuel, Emissions treatment system with ammonia-generating and SCR catalysts.
상세보기
Wan, Chung-Zong; Zheng, Xiaolai; Stiebels, Susanne; Zabel, Claudia; Neubauer, Torsten; Boorse, R. Samuel, Emissions treatment system with ammonia-generating and SCR catalysts.
상세보기
Wan, Chung-Zong; Zheng, Xiaolai; Stiebels, Suzanne; Wendt, Claudia; Neubauer, Torsten; Boorse, R. Samuel, Emissions treatment system with ammonia-generating and SCR catalysts.
상세보기
Day John P. ; Frost Rodney I. ; Socha ; Jr. Louis S. ; Lachman Irwin M. ; Patil Mallanagouda D., Engine exhaust system with reduced hydrocarbon emissions.
상세보기
Abe Fumio (Handa JPX) Suzuki Junichi (Kuwana JPX) Ogawa Masato (Komaki JPX), Exhaust gas purification method and apparatus therefor.
상세보기
Abe Fumio,JPX ; Suzuki Junichi,JPX ; Ogawa Masato,JPX, Exhaust gas purification method and apparatus therefor.
상세보기
Onoe, Ryota; Yoshioka, Mamoru; Chiba, Fumito; Tsukagoshi, Takahiro, Fuel injection apparatus for internal combustion engine.
상세보기
Tsukagoshi, Takahiro; Chiba, Fumito; Yoshioka, Mamoru; Onoe, Ryota, Fuel injection apparatus for internal combustion engine.
상세보기
Yoshioka, Mamoru; Chiba, Fumito; Tsukagoshi, Takahiro; Onoe, Ryota, Fuel injection apparatus for internal combustion engine.
상세보기
Hertl William ; Guile Donald L. ; Patil Mallanagouda D. ; Williams Jimmie L., Gas treatment systems.
상세보기
Yan, JiYang; Robota, Heinz J., High-temperature aging tolerance catalyzed adsorber system for treating internal combustion engine exhaust gas.
상세보기
Buelow, Mark Thomas; Hoke, Jeffrey Barmont; Steger, John Joseph, Hydrocarbon adsorption filter for air intake system evaporative emission control.
상세보기
Buelow, Mark Thomas; Hoke, Jeffrey Barmont; Steger, John Joseph, Hydrocarbon adsorption filter for air intake system evaporative emission control.
상세보기
Hoke, Jeffrey Barmont; Buelow, Mark Thomas; Kauffman, John Joseph, Hydrocarbon adsorption method and device for controlling evaporative emissions from the fuel storage system of motor vehicles.
상세보기
Hoke, Jeffrey Barmont; Buelow, Mark Thomas; Kauffman, John Joseph, Hydrocarbon adsorption slurry washcoat formulation for use at low temperature.
상세보기
Hoke,Jeffrey Barmont; Buelow,Mark Thomas; Kauffman,John Joseph, Hydrocarbon adsorption trap for controlling evaporative emissions from EGR valves.
상세보기
Lupescu, Jason, Hydrocarbon retaining and purging system.
상세보기
Hertl William ; Guile Donald L. ; Patil Mallanagouda D. ; Williams Jimmie L., In-line adsorber system.
상세보기
Hertl William ; Guile Donald L. ; Patil Mallanagouda D. ; Williams Jimmie L., In-line adsorber system.
상세보기
Clawson, Lawrence G.; Dorson, Matthew H.; Mitchell, William L.; Nowicki, Brian J.; Thijssen, Johannes; Davis, Robert; Papile, Christopher; Rumsey, Jennifer W.; Longo, Nathan; Cross, III, James C.; Ri, Integrated hydrocarbon reforming system and controls.
상세보기
Nakatani, Koichiro; Tanaka, Toshiaki; Hirota, Shinya; Asanuma, Takamitsu; Kimura, Koichi; Toshioka, Shunsuke; Mikami, Akira, Internal combustion engine emission control apparatus and method.
상세보기
Hsueh-Chia Chang ; David T. Leighton, Method and Apparatus for treating exhaust gases.
상세보기
Zahn Wolfgang,DEX ; Loose Gunter,DEX ; Hirschmann Axel,DEX, Method and apparatus for purifying exhaust gases from internal combustion engines.
상세보기
Burk Patrick Lee ; Hochmuth John Karl ; Dettling Joseph Charles ; Heck Ronald Marshall ; Steger John Joseph ; Tauster Samuel Jack, Method and apparatus for treating an engine exhaust gas stream.
상세보기
Buelow, Mark T.; Alden, Laif R.; Kauffman, John; Steger, John J.; McMaster, William; Liu, Zhenguo; Gummaraju, Raghuram, Polymeric trap with adsorbent.
상세보기
Pollica,Darryl; Northrop,William F.; Qi,Chunming (Frank C.); Hagan,Mark R.; Smith,Alexis; Clawson,Lawrence, Preferential oxidation reactor temperature regulation.
상세보기
Bortun I. Anatoly ; John Gerard Nunan, Preparation of multi-component Ce, Zr, Mox high oxygen-ion-conduct/oxygen-storage-capacity materials.
상세보기
Sugimoto Takashi (Toyota JPX) Kato Takashi (Okazaki JPX) Harada Masashi (Shinnanyo JPX) Asano Seiichi (Hikari JPX), Process for adsorbing the vapor of alcoholic fuels.
상세보기
Sharma Sanjay B. (Princeton NJ) Shihabi David S. (Pennington NJ), Process for exhaust gas NOx, CO, and hydrocarbon removal.
상세보기
Kharas Karl C. C. ; Henk Michael George ; Robota Heinz Juergen, Reduction of NO.sub.x in the exhaust gases from internal combustion engines containing excess oxygen.
상세보기
Karl C. C. Kharas ; Heinz J. Robota, Reduction of NOx in the exhaust from leanOx internal combustion engines.
상세보기
Peters, Mark William; Roth, John M.; Jahr, Ken O.; Devries, Jason Eugene; Hedges, John, System and method to improve engine emissions for a dual fuel engine.
상세보기
Foong,John S.; Hoke,Jeffrey B., Volatile hydrocarbon adsorber unit.
상세보기
Yavuz Bulent O. ; Voss Kenneth E. ; Deeba Michel ; Adomaitis John R. ; Farrauto Robert J., Zeolite-containing oxidation catalyst and method of use.
상세보기
Yavuz Bulent O. ; Voss Kenneth E. ; Deeba Michel ; Adomaitis John R. ; Farrauto Robert J., Zeolite-containing oxidation catalyst and method of use.
상세보기

내보내기 메뉴

내보내기 구분

파일저장
인쇄
메일전송

구성항목

기본정보
상세정보

관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC

저장형식

Text(ASCII format)
Excel format
PIAS분석(.xls)

메일정보

받는사람 (필수): @
보내는사람 (선택): @
제목
내용: KISTI 검색결과 이메일 서비스

안내

총 건의 자료가 검색되었습니다.

다운받으실 자료의 인덱스를 입력하세요. (1-10,000)

검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다.

데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요)

다운로드 파일은 UTF-8 형태로 저장됩니다.
파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오.

Text(ASCII format)
Excel format

AI-Helper ※ AI-Helper는 을 사용합니다.

AI-Helper

안녕하세요, AI-Helper입니다. 좌측 "선택된 텍스트"에서 텍스트를 선택하여 요약, 번역, 용어설명을 실행하세요.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.

IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

연합인증

Use of a molecular sieve bed to minimize emissions during cold start of internal combustion engines 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

이 특허를 인용한 특허 (44)

관련 콘텐츠

특허 원문 보기

IPC 상위 출원인

AI-Helper ※ AI-Helper는 오픈소스 모델을 사용합니다.

선택된 텍스트

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증

Use of a molecular sieve bed to minimize emissions during cold start of internal combustion engines 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

전체(0) 논문(0) 특허(0) 보고서(0)

전체(0) 논문(0) 특허(0) 보고서(0)

이 특허를 인용한 특허 (44)

관련 콘텐츠

특허 원문 보기

IPC 상위 출원인

AI-Helper ※ AI-Helper는 오픈소스 모델을 사용합니다.

선택된 텍스트