[특허]Method and apparatus for an on-stream particle replacement system for countercurrent contact of a gas and liquid feed st

Method and apparatus for an on-stream particle replacement system for countercurrent contact of a gas and liquid feed st 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C10G-035/00
출원번호	US-0381948 (1989-07-19)
발명자 / 주소	Stangeland Bruce E. (Berkeley CA) Kramer David C. (San Anselmo CA) Smith David S. (Baton Rouge LA) McCall James T. (Baton Rouge LA) Scheuerman Georgieanna L. (Moraga CA) Bachtel Robert W. (El Cerrito
출원인 / 주소	Chevron Research & Technology Company (San Francisco CA 02)
인용정보	피인용 횟수 : 28 인용 특허 : 0

초록 ▼

This invention makes possible substantially continuous flow of uniformly distributed hydrogen and hydrocarbon liquid across a densely packed catalyst bed to fill substantially the entire volume of a reactor vessel by introducing the fluids as alternate annular rings of gas and liquid at a rate insufficient to levitate the bed and with catalyst selected by a density, shape and size at a design feed rate of liquids and gas to prevent ebulation of the packed bed at the design feed rates. Catalysts are selected by measuring bed expansion in a large pilot plant run with hydrocarbon, hydrogen, and catalyst at the design pressures and flow velocities. The liquid and gas components of the feed flow into the bed in alternate annular rings across the full area of the bed. At the desired flow rate, such catalyst continually flows in a plug-like manner downwardly through the vessel by introducing fresh catalyst at the top of the bed by laminarly flowing such catalyst in a liquid stream on a periodic or semicontinuous basis. Catalyst is similarly removed by laminarly flowing catalyst particles in a liquid stream out of the bottom of the bed. Intake for such flow is out of direct contact with the stream of gas flowing through the bed and the flow path is substantially constant in cross-sectional area and greater in diameter by several times than the diameter of the catalyst particles.

대표청구항 ▼

A method of on-stream catalyst replacement for continuously supplying replacement catalyst to a substantially packed bed of catalyst downwardly flowing in a reactor vessel during hydroprocessing of an upflowing hydrocarbon feed stream having a liquid component and a hydrogen-containing gas component by contact with said bed at a rate controlled to prevent substantial ebullition of the catalyst particles forming said packed bed, which comprises selecting the size, shape and density of the catalyst particles forming said bed to substantially avoid ebullition or levitation of said particles over a substantial portion of the axial length of said catalyst bed during flow of said hydrocarbon feed stream including said gaseous component therethrough at said controlled rate, uniformly distributing flow of said gas component and the liquid component of said feed stream across the full cross-sectional area of said bed to maintain plug flow of said bed without local ebullition or levitation thereof, including recirculation of catalyst particles within portions of said bed while said bed moves downwardly through said vessel, said uniform distribution including introducing said feed stream containing a mixture of said components into said bed through a plurality of concentric annular rings, forming separate alternate upward flow paths for said liquid component and said gas component through a truncated conical surface supporting the bottom of said catalyst bed, said conical surface being uniformly pervious to said concentric annular rings for upward flow of alternately separated bands of said liquid and said gas components extending circumferentially over the transverse cross-sectional area and along the axis of said bed during downward flow of said catalyst bed, adding replacement catalyst to the top of said downwardly flowing bed at a rate to replace catalyst withdrawn from the bottom of said bed, and transferring catalyst out of said vessel from the bottom of said bed in a liquid stream flowing at laminar flow conditions from above the truncated central area of said conical surface, said truncated central area being impervious to gas and liquid components rising in said annular rings through said conical surface to maintain said laminar flow condition during said transfer.

이 특허를 인용한 특허 (28)

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Trimble Harold J. (Novato CA) Reynolds Bruce E. (Martinez CA) Bachtel Robert W. (El Cerrito CA) Klett Robert J. (San Francisco CA) Brossard David N. (Oakland CA) Earls David E. (Pinole CA), Apparatus and method for quenching in hydroprocessing of a hydrocarbon feed stream.
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Naunheimer, Christopher; Sechrist, Paul A., Apparatus for transferring particles.
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Naunheimer, Christopher; Sechrist, Paul A., Apparatus for transferring particles.
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Gibson,Kirk R.; Threlkel,Richard; Leung,Pak C., Catalyst for conversion processes.
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Stangeland Bruce E. (Berkeley CA) Kramer David C. (San Anselmo CA) Smith David S. (Kingwood TX) McCall James T. (Colorado Springs CO) Scheuerman Georgieanna L. (Moraga CA) Bachtel Robert W. (El Cerri, Catalyst method and apparatus for an on-stream particle replacement system for countercurrent contact of a gas and liqui.
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DiFrancesco, Chris E.; Altizer, James C.; Hastings, Thomas W.; Kassman, Edward F.; Trefzger, Christian, Catalyst systems.
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DiFrancesco, Chris E.; Hastings, Thomas W.; Kassmann, Edward F.; Trefzger, Christian, Catalyst systems advantageous for high particulate matter environments.
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DiFrancesco, Chris E.; Iida, Kozo, Compositions and methods for treating exhaust gases.
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Augier, Frédéric; Beaumont, Robert; Boyer, Christophe; Darmancier, Denis, Enclosure containing a granular bed and a distribution of a gas phase and of a liquid phase circulating in an ascending flow in this enclosure.
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Trimble Harold J. ; Cash Dennis R., Fixed bed reactor assembly having a guard catalyst bed.
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Reynolds Bruce E. ; Stangeland Bruce E. ; Parimi Krishniah ; Bachtel Robert W., Gas pocket distributor for hydroprocessing a hydrocarbon feed stream.
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Reynolds Bruce E. ; Stangeland Bruce E. ; Parimi Krishniah ; Bachtel Robert W., Gas-pocket distributor and method for hydroprocessing a hydrocarbon feed stream.
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Schirmer, Mark L.; Andies, James R.; Benoit, Ernest A.; Freeman, Jeremy T.; Hastings, Thomas W., In-situ catalyst replacement.
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Kassner,Uwe, Method and device for operating an internal combustion engine.
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Naunheimer, Christopher, Method for transferring particles.
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Naunheimer, Christopher; Sechrist, Paul A., Method for transferring particles.
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Naunheimer, Christopher; Sechrist, Paul A., Method of transferring particles.
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Shih John, Mixing system for mixing and distributing fluids in a reactor.
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Scheuerman Georgieanna L., Multistage moving-bed hydroprocessing reactor with separate catalyst addition and withdrawal systems for each stage, and.
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Pilliod, Dana Lynn; Randall, Katy Conley; Harding, Eric Martin, Process for hydrocarbon conversion with on-line solid particulate material removal.
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Pilliod, Dana Lynn; Randall, Katy Conley; Harding, Eric Martin, Process for hydrocarbon conversion with on-line solid particulate material removal.
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Kressmann, Stephane Cyrille; Shafi, Raheel; Alzaid, Ali Hussain; Hamad, Esam Z., Process for the sequential hydroconversion and hydrodesulfurization of whole crude oil.
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Shafi, Raheel; Hamad, Esam Z.; Kressmann, Stephane Cyrille; Alzaid, Ali Hussain, Process for the treatment of heavy oils using light hydrocarbon components as a diluent.
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Reynolds, Bruce E.; Lam, Fred W.; Chabot, Julie; Antezana, Fernando J.; Bachtel, Robert; Gibson, Kirk R.; Threlkel, Richard; Leung, Pak C., Upflow reactor system with layered catalyst bed for hydrotreating heavy feedstocks.
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Method and apparatus for an on-stream particle replacement system for countercurrent contact of a gas and liquid feed st 원문보기

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Method and apparatus for an on-stream particle replacement system for countercurrent contact of a gas and liquid feed st 원문보기

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