[특허]Catalyst, method and apparatus for an on-stream particle replacement system for countercurrent contact of a gas and liqu

Catalyst, method and apparatus for an on-stream particle replacement system for countercurrent contact of a gas and liqu 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01J-023/58
출원번호	US-0235777 (1994-04-29)
발명자 / 주소	Scheuerman Georgieanna L. (1155 Sanders Dr. Moraga CA 94556) Johnson David R. (7 Azalea Ct. Petaluma CA 94954) Kramer David C. (54 Brookside Dr. San Anselmo CA 94960)
인용정보	피인용 횟수 : 35 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 catalyst bed. Catalyst are selected by density, shape and size at a design feed rate of liquids and gas to prevent ebullation of the packed bed at the design feed rates. Catalysts are selected by measuring bed expansion 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 reactor vessel by introducing fresh catalyst at the top of the catalyst bed by laminarly flowing such catalyst in a liquid stream on a periodic or semicontinuous basis. Catalyst is removed by laminarly flowing catalyst particles in a liquid stream out of the bottom of the catalyst 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. The catalyst produces a plug-flowing substantially packed bed of hydroprocessing catalyst which occupies at least about 75% by volume of the reactor volume.

대표청구항 ▼

A catalyst for producing a plug-flowing substantially packed bed of hydroprocessing catalyst during hydroprocessing by contacting a substantially packed bed of hydroprocessing catalyst with an upflowing hydrocarbon feed stream having a liquid component and a hydrogen-containing gas component comprising a plurality of catalytic particulates having a mean diameter ranging from about 35 Tyler mesh to about 3 Tyler mesh; and a size distribution such that at least about 90% by weight of said catalytic particulates have a diameter ranging from R1 to R2, wherein: (1) R1 has a value ranging from about 1/64 inch to about ¼inch, (2) R2 has a value ranging from about 1/64 inch to about ¼inch, (3) a value of a ratio R2/R1 ranges from about 1.0 to about 1.4; and an aspect ratio less than about 2.0 and further wherein: said catalytic particulates have a size distribution such that a maximum of about 2.0% by weight of said catalytic particulates have a diameter less than R1 and a maximum of about 0.4% by weight of said catalytic particulates have a diameter less than R3, wherein R3 is less than R1 and the value of the ratio R1/R3 is about 1.4; and such that when said catalytic particulates are disposed in a hydrocarbon reaction zone to produce a substantially packed bed of hydroprocessing catalyst and a hydrocarbon feed stream flows upwardly through the substantially packed bed of hydroprocessing catalyst, plug-flowing of the substantially packed bed of hydroprocessing catalyst commences when a volume of the catalytic particulates is withdrawn from a bottom of the hydrocarbon reaction zone.

이 특허를 인용한 특허 (35)

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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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Fujita, Katsuhisa; Shimowake, Masafumi; Kamo, Tetsuro, Hydroprocessing catalyst and process.
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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

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연합인증

Catalyst, method and apparatus for an on-stream particle replacement system for countercurrent contact of a gas and liqu 원문보기

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Catalyst, method and apparatus for an on-stream particle replacement system for countercurrent contact of a gas and liqu 원문보기

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연구과제 타임라인

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이 특허를 인용한 특허 (35)

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