[특허]Process for cracking low-quality feed stock and system used for said process

Process for cracking low-quality feed stock and system used for said process 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C10G-009/36
출원번호	US-0241676 (1994-05-12)
우선권정보	JP-0221653 (1988-09-05)
발명자 / 주소	Yoshida Masahiko (Chiba JPX) Kitayama Yutaka (Chiba JPX) Iida Tsukasa (Chiba JPX)
출원인 / 주소	Mitsui Petrochemical Industries, Ltd. (Tokyo JPX 03)
인용정보	피인용 횟수 : 52 인용 특허 : 0

초록 ▼

In a process for thermally cracking a low-quality feed stock containing a considerable proportion of heavy fractions such as high-boiling fractions, and evaporation residual oil, and a system used therefor, in which the low-quality feed stock is withdrawn from the preheater of the thermal cracking furnace to separate and remove a required proportion of said heavy fractions and thereafter returned to subject the feed stock to further preheating and thermal cracking. The low-quality feed stock thermally cracked has a predetermined proportion of the heavy fractions removed, and coking in the thermal cracking system at various lines is avoided from occurring.

대표청구항 ▼

A process for thermally cracking a heavy natural gas liquid containing heavy fractions in a cracking furnace having a convection zone containing a first preheater and a second preheater and a radiation zone containing a thermally cracking reactor comprising the steps of: supplying said heavy natural gas liquid to the first preheater provided in a top portion of said convection zone of the cracking furnace; preheating the supplied heavy natural gas liquid to a temperature and pressure at which fractions unlikely to cause coking problems are fully evaporated and fractions likely to cause coking problems are maintained in a liquid phase, in the first preheater and maintaining an exit temperature thereof in the range of from 200°to less than 300°C. and a gas/liquid ratio of the preheated heavy natural gas liquid in the range of from 60/40 to 98/2; withdrawing the preheated heavy natural gas liquid from said first preheater; superheating a suitable amount of dilution steam at a temperature higher than that of the preheated heavy natural gas liquid; mixing a required amount of superheated dilution steam with the heavy natural gas liquid from said first preheater through a connection line between said first preheater and a gas-liquid separator to obtain an adjusted gas/liquid ratio of the heavy natural gas liquid, corresponding to the properties of differing heavy natural gas liquid feedstocks, to result in a predetermined gas/liquid separation in said gas-liquid separator; supplying said mixture of said superheated dilution steam and said heavy natural gas liquid, having an adjusted gas/liquid ratio, to said gas-liquid separator; separating and removing the heavy fractions from the withdrawn heavy natural gas liquid in said gas-liquid separator; mixing the heavy-fraction-removed heavy natural gas liquid from the separator with a remaining amount of the superheated dilution steam necessary for thermal cracking; passing said heavy-fraction-removed heavy natural gas liquid from the gas-liquid separator to said second preheater provided in said convection zone of the cracking furnace; preheating the passed heavy-fraction-removed heavy natural gas liquid to a temperature below the temperature at which cracking is promoted; introducing the preheated heavy-fraction-removed heavy natural gas liquid into the thermally cracking reactor; and thermally cracking the introduced heavy-fraction-removed heavy natural gas liquid in said thermally cracking reactor.

이 특허를 인용한 특허 (52)

Stell,Richard C.; McCoy,James N., Apparatus and process for controlling temperature of heated feed directed to a flash drum whose overhead provides feed for cracking.
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Stell, Richard C.; Stephens, George; Bancroft, Jennifer L.; Messinger, John R., Cracking hydrocarbon feedstock containing resid utilizing partial condensation of vapor phase from vapor/liquid separation to mitigate fouling in a flash/separation vessel.
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Stell,Richard C.; Stephens,George; Bancroft,Jennifer L.; Messinger,John R., Cracking hydrocarbon feedstock containing resid utilizing partial condensation of vapor phase from vapor/liquid separation to mitigate fouling in a flash/separation vessel.
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Stell,Richard C.; Stephens,George; Bancroft,Jennifer L.; Messinger,John R., Cracking hydrocarbon feedstock containing resid utilizing partial condensation of vapor phase from vapor/liquid separation to mitigate fouling in a flash/separation vessel.
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Davis, S. Mark; Stell, Richard C.; Liou, Jiunn-Shyan; Brown, Stephen H.; Keusenkothen, Paul F.; Di Nicolantonio, Arthur R.; Waldrop, John J., Integrated process for steam cracking.
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Davis, S. Mark; Stell, Richard C.; Liou, Jiunn-Shyan; Brown, Stephen H.; Keusenkothen, Paul F.; DiNicolantonio, Arthur R.; Waldrop, John J., Integrated process for steam cracking.
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Zhai, Yumei; Guan, Shan; Sridhar, Narasi; Agarwal, Arun S., Method and apparatus for the electrochemical reduction of carbon dioxide.
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Powers,Donald H., Olefin production utilizing condensate feedstock.
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Stell, Richard C.; Balinsky, George J.; McCoy, James N.; Keusenkothen, Paul F., Process and apparatus for cracking hydrocarbon feedstock containing resid.
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Stell, Richard C.; Balinsky, George J.; McCoy, James N.; Keusenkothen, Paul F., Process and apparatus for cracking hydrocarbon feedstock containing resid.
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Stell,Richard C.; Balinsky,George J.; McCoy,James N.; Keusenkothen,Paul F., Process and apparatus for cracking hydrocarbon feedstock containing resid.
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Stell, Richard C.; Bancroft, Jennifer L.; Dinicolantonio, Arthur R.; Annamalai, Subramanian; McCoy, James N.; Keusenkothen, Paul F.; Stephens, George; Messinger, John R.; Frye, James Mitchell; Vidonic, Nick G.; Balinsky, George J., Process and apparatus for cracking hydrocarbon feedstock containing resid to improve vapor yield from vapor/liquid separation.
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Stell,Richard C.; Bancroft,Jennifer L.; DiNicolantonio,Arthur R.; Annamalai,Subramanian; McCoy,James N.; Keusenkothen,Paul F.; Stephens,George; Messinger,John R.; Frye,James Mitchell; Vidonic,Nick G., Process and apparatus for cracking hydrocarbon feedstock containing resid to improve vapor yield from vapor/liquid separation.
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Stell, Richard C.; Di Nicolantonio, Arthur R.; Frye, James M.; Annamalai, Subramanian; Vidonic, Nicholas G., Process and apparatus for removing coke formed during steam cracking of hydrocarbon feedstocks containing resids.
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Stell,Richard C.; Di Nicolantonio,Arthur R.; Frye,James M.; Annamalai,Subramanian; Vidonic,Nicholas G., Process and apparatus for removing coke formed during steam cracking of hydrocarbon feedstocks containing resids.
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Stell, Richard C.; Annamalai, Subramanian; Frye, James M., Process and draft control system for use in cracking a heavy hydrocarbon feedstock in a pyrolysis furnace.
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Stell,Richard C.; Annamalai,Subramanian; Frye,James M., Process and draft control system for use in cracking a heavy hydrocarbon feedstock in a pyrolysis furnace.
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Spicer, David B.; Scherer, Caleb M.; Frye, James M.; Annamalai, Subramanian, Process for cracking a heavy hydrocarbon feedstream.
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Overwater, Jacobus Arie Schilleman; Van Der Eijk, Johannes Pieter, Process for cracking a hydrocarbon feedstock comprising a heavy tail.
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Bridges, Robert S.; Chellappan, Sellamuthu G., Process for cracking heavy hydrocarbon feed.
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Bridges, Robert S.; Chellappan, Sellamuthu G., Process for cracking heavy hydrocarbon feed.
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Bridges, Robert S.; Chellappan, Sellamuthu G., Process for cracking heavy hydrocarbon feed.
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Coleman, Steven T., Process for cracking heavy hydrocarbon feed.
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Spicer,David B.; Dinicolantonio,Arthur R.; Frye,James Mitchell; Stell,Richard C., Process for cracking hydrocarbon feed with water substitution.
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Baumgartner, Arthur James; Ngan, Danny Yuk-Kwan, Process for producing lower olefins from heavy hydrocarbon feedstock utilizing two vapor/liquid separators.
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Stell, Richard C.; Vidonic, Nicholas G., Process for reducing fouling from flash/separation apparatus during cracking of hydrocarbon feedstocks.
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Stell, Richard C.; Vidonic, Nicholas G., Process for reducing fouling from flash/separation apparatus during cracking of hydrocarbon feedstocks.
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Stell,Richard C.; Vidonic,Nicholas G., Process for reducing fouling from flash/separation apparatus during cracking of hydrocarbon feedstocks.
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Stell,Richard C.; Vidonic,Nicholas G., Process for reducing fouling from flash/separation apparatus during cracking of hydrocarbon feedstocks.
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Stell,Richard C., Process for reducing vapor condensation in flash/separation apparatus overhead during steam cracking of hydrocarbon feedstocks.
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Stell,Richard C., Process for reducing vapor condensation in flash/separation apparatus overhead during steam cracking of hydrocarbon feedstocks.
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Stell,Richard C., Process for reducing vapor condensation in flash/separation apparatus overhead during steam cracking of hydrocarbon feedstocks.
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McCoy, James N.; Spicer, David B.; Stell, Richard C., Process for steam cracking heavy hydrocarbon feedstocks.
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Stell, Richard C.; Dinicolantonio, Arthur R.; Frye, James Mitchell; Spicer, David B.; McCoy, James N.; Strack, Robert David, Process for steam cracking heavy hydrocarbon feedstocks.
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Stell,Richard C.; DiNicolantonio,Arthur R.; Frye,James Mitchell; Spicer,David B.; McCoy,James N.; Strack,Robert David, Process for steam cracking heavy hydrocarbon feedstocks.
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Keusenkothen,Paul F., Reduction of total sulfur in crude and condensate cracking.
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Stell,Richard C.; Strack,Robert D.; Frye,James M.; Srivastava,Alok; Annamalai,Subramanian; McCoy,James N., Steam cracking of hydrocarbon feedstocks containing non-volatile components and/or coke precursors.
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McCoy,James N.; Di Nicolantonio,Arthur R.; Frye,James M.; Stapleton,Melissa D.; Stell,Richard C., Steam cracking of hydrocarbon feedstocks containing salt and/or particulate matter.
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Beattie,David; Stell,Richard C.; Srivastava,Alok; McCoy,James N., Steam cracking of light hydrocarbon feedstocks containing non-volatile components and/or coke precursors.
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McCoy, James N.; DiNicolantonio, Arthur R.; Stell, Richard C., Steam cracking of partially desalted hydrocarbon feedstocks.
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Sundaram, Kandasamy Meenakshi, Thermal cracking of crudes and heavy feeds to produce olefins in pyrolysis reactor.
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Frye,James M.; Beattie,David; Stell,Richard C.; Annamalai,Subramanian; Srivastava,Alok, Vapor/liquid separation apparatus.
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Stell,Richard C.; Di Nicolantonio,Arthur R.; Stephens,George; Frye,James M., Vapor/liquid separation apparatus for use in cracking hydrocarbon feedstock containing resid.
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Stell,Richard C.; Di Nicolantonio,Arthur R.; Stephens,George; Frye,James M., Vapor/liquid separation apparatus for use in cracking hydrocarbon feedstock containing resid.
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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

내보내기 구분	파일저장 인쇄 메일전송
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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

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Process for cracking low-quality feed stock and system used for said process 원문보기

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Process for cracking low-quality feed stock and system used for said process 원문보기

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이 특허를 인용한 특허 (52)

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