US3972958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of coal to high octane gasoline
Assignee: Mobil Oil AS
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Filing: 1975-04-08
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Granted: 1976-08-03
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Expires: 1995-04-08
Abstract
Abstract An integrated process for converting coal to high octane gasoline by gasifying the coal in such manner as to form a gas comprising carbon oxides, hydrogen and methane; contacting this gas in one or a series of steps with one or a series of catalysts, respectively comprising a special high silica to alumina ratio zeolite; converting the carbon oxides and hydrogen by such contact to a product comprising water, high octane aromatic gasoline and light hydrocarbon gases; alkylating the C3 and C4 olefins with the isobutane in the light gases to produce alkylate gasoline; admixing the aromatic and alkylate gasoline; and subjecting the C2<-> portion of the product to steam reforming whereby additional synthesis gas to be admixed with the gas produced by coal gasification is formed.
Inventors
- 👤 William E. Garwood
- 👤 Solomon M. Jacob
- 👤 James C. Kuo
- 👤 John J. Wise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:35
CPC Classifications
C; C10; C10G; C10G29/00; C10G29/20; C10G29/205; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/0485; C07C2/00; C07C2/54; C07C2/56; C07C2/58; C07C2/62; C07C29/00; C07C29/15; C07C29/151; C07C29/1516; C07C29/1518; C10G2/00; C10G2/30; C10G2/32; C10J; C10J3/00; C10K; C10K3/00; C10K3/001; C10K3/003; C10K3/006; C10L; C10L1/00; C10L1/04; C10L1/06; C01B2203/00; C01B2203/02; C01B2203/0205; C01B2203/0227; C01B2203/0233; C01B2203/06; C01B2203/062; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/093; C10J2300/0953; C10J2300/0959; C10J2300/0973; C10J2300/16; C10J2300/164; C10J2300/1656; C10J2300/1659; Y; Y02; Y02P; Y02P20/00; Y02P20/10; Y02P20/50; Y02P20/52; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/905; Y10S585/929; Y10S585/943
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
232 words
A process of converting coal to gasoline comprising: a. reacting coal with oxygen and water at about 1450° to 1800° F to produce a synthesis gas product comprising carbon oxides, hydrogen and methane; b. catalyzing the conversion of said synthesis gas product from step (a) to form a product comprising water, C 4 - gas and C 5 + liquid hydrocarbons with a catalyst comprising a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least 12 and a constraint index of 1 to 12; c. separating a gasoline fraction containing aromatic components therein from said liquid hydrocarbons of step b; d. separating said C 4 - gas into a C 2 - tail gas comprising methane, ethane and ethylene, and an alkylation feed comprising saturated and unsaturated C 3 and C 4 hydrocarbons; e. alkylating said alkylation feed in contact with a strong alkylation acid to a reaction temperature up to about 450° F and up to about 500 psig; f. separating C 7 and C 8 alkylate from step (e) and admixing said alkylate with said gasoline from step (c); g. steam reforming said C 2 - tail gas from step (d) to form an auxiliary synthesis gas comprising carbon oxides and hydrogen; and h. admixing said auxiliary synthesis gas from step (g) with said coal gasification gas from step (a) prior to conversion thereof in step (b).
Claim 2
Dependent Claim
232 words
A process of converting coal to gasoline comprising: a. reacting coal with oxygen and water at about 1450° to 1800° F to produce a synthesis gas product comprising carbon oxides, hydrogen and methane; b. catalyzing the conversion of said synthesis gas product from step (a) to form a product comprising water, C 4 - gas and C 5 + liquid hydrocarbons with a catalyst comprising a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least 12 and a constraint index of 1 to 12; c. separating a gasoline fraction containing aromatic components therein from said liquid hydrocarbons of step b; d. separating said C 4 - gas into a C 2 - tail gas comprising methane, ethane and ethylene, and an alkylation feed comprising saturated and unsaturated C 3 and C 4 hydrocarbons; e. alkylating said alkylation feed in contact with a strong alkylation acid to a reaction temperature up to about 450° F and up to about 500 psig; f. separating C 7 and C 8 alkylate from step (e) and admixing said alkylate with said gasoline from step (c); g. steam reforming said C 2 - tail gas from step (d) to form an auxiliary synthesis gas comprising carbon oxides and hydrogen; and h. admixing said auxiliary synthesis gas from step (g) with said coal gasification gas from step (a) prior to conversion thereof in step (b).
Claim 3
Dependent Claim
66 words
The process claimed in claim 1 including contacting said synthesis gas with a catalyst comprising said zeolite as a first component and as a second component a metal value having high catalytic acitivity for reducing carbon monoxide and low catalytic activity for hydrogenating olefins, at about 300° to 800° F and about 50 to 1500 psig; recovering a C 2 - fraction and steam reforming such.
Claim 4
Dependent Claim
27 words
The process claimed in claim 2 wherein said metal value is at least one member selected from the group consisting of thorium, ruthenium, iron, rhodium and cobalt.
Claim 5
Dependent Claim
12 words
The process claimed in claim 1 wherein said zeolite is a ZSM-5.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-03 | 1980-02-02 | 1980-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-03 | 1984-02-02 | 1984-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-03 | 1988-02-02 | 1988-08-03 | $7700.00 | Window Closed / Lapsed |