Patent US3867281A successfully refreshed from Google Patents.
US3867281A
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US
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Hydroconversion process
Assignee: Chevron USA Inc
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Filing: 1973-08-01
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Granted: 1975-02-18
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Expires: 1993-08-01
Abstract
Abstract In a hydroconversion process wherein a hydrocarbon feedstock is contacted with solid catalyst particles prepared by forming a hydrogel and then shaping the hydrogel into a pellet, and wherein said contacting is carried out at a temperature between 400* and 900*F., and a hydrogen partial pressure between 100 and 10,000 psig, the improvement which comprises preparing said catalyst by adding to said hydrogel a catalyst fines-water mixture containing at least 10 weight percent free water and at least 80 percent total water, before the hydrogel is shaped into a pellet.
Inventors
- 👤 Barry S Morgan
- 👤 Joseph Jaffe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:08
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/0009; C; C10; C10G; C10G45/00; C10G45/02; C10G45/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
96 words
IN A HYDROCONVERSION PROCESS WHEREIN A HYDROCARBON FEEDSTOCK IS CONTACTED WITH SOLID CATALYST PARTICLES PREPARED BY FORMING A HYDROGEL AND THEN SHAPING THE HYDROGEL INTO A PEILET, AND WHEREIN SAID CONTACTING IS CARRIED OUT AT A TEMPERATURE BETWEEN 400* AND 900*F., AND A HYDROGEN PARTIAL PRESSURE BETWEEN 100 AND 10,000 PSIG, THE IMPROVEMENT WHICH COMPRISES USING AS SAID CATALYST A CATALYST PREPARED BY STEPS COMPRISING ADDING TO SAID HYDROGEL A CATALYST FINES-WATER MIXTURE CONTAINING AT LEAST 10 WEIGHT PERCENT FREE WATER AND AT LEAST 80 PERCENT TOTAL WATER, BEFORE THE HYDROGEL IS SHAPED INTO A PELLET.
Claim 2
Dependent Claim
96 words
IN A HYDROCONVERSION PROCESS WHEREIN A HYDROCARBON FEEDSTOCK IS CONTACTED WITH SOLID CATALYST PARTICLES PREPARED BY FORMING A HYDROGEL AND THEN SHAPING THE HYDROGEL INTO A PEILET, AND WHEREIN SAID CONTACTING IS CARRIED OUT AT A TEMPERATURE BETWEEN 400* AND 900*F., AND A HYDROGEN PARTIAL PRESSURE BETWEEN 100 AND 10,000 PSIG, THE IMPROVEMENT WHICH COMPRISES USING AS SAID CATALYST A CATALYST PREPARED BY STEPS COMPRISING ADDING TO SAID HYDROGEL A CATALYST FINES-WATER MIXTURE CONTAINING AT LEAST 10 WEIGHT PERCENT FREE WATER AND AT LEAST 80 PERCENT TOTAL WATER, BEFORE THE HYDROGEL IS SHAPED INTO A PELLET.
Claim 3
Dependent Claim
14 words
A process in accordance with claim 1, wherein the hydrogel comprises an alumina precursor.
Claim 4
Dependent Claim
14 words
A process in accordance with claim 1, wherein the hydrogel comprises a silica precursor.
Claim 5
Dependent Claim
13 words
A process in accordance with claim 1, wherein the hydrogel comprises alumina-silica precursors.
Claim 6
Dependent Claim
17 words
A process in accordance with claim 1, wherein a sulfur containing feedstock is treated under hydrodesulfurization condition.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |