Patent US4049734A successfully refreshed from Google Patents.
US4049734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of coal to high octane gasoline
Assignee: Mobil Oil AS
•
Filing: 1975-04-08
•
Granted: 1977-09-20
•
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 gasolines; and subjecting the C2- portion of the product to catalytic methanation via a nickel catalyst to produce synthetic natural gas.
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
2026-11-07 18:29
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/04; C10L1/06; C07; C07C; C07C2/00; C07C2/54; C07C2/56; C07C2/58; C07C2/62; Y; Y02; Y02P; Y02P20/00; Y02P20/10; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/93; Y10S585/934; Y10S585/943
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
123 words
A process of converting coal to aromatic gasoline comprising: reacting coal with oxygen and steam at about 1450° to 1800° F to produce a synthesis gas product comprising carbon oxides, hydrogen and methane; catalyzing the conversion of said carbon oxides and hydrogen to a product comprising water, C 4 - gas and C 5 + `aromatic gasoline by 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; contacting at least the C 2 - portion of said C 4 - gas with a methanation catalyst at about 525° to 1000° F to convert such to synthetic natural gas; and recovering synthetic natural gas, aromatic gasoline and LPG.
Claim 2
Dependent Claim
123 words
A process of converting coal to aromatic gasoline comprising: reacting coal with oxygen and steam at about 1450° to 1800° F to produce a synthesis gas product comprising carbon oxides, hydrogen and methane; catalyzing the conversion of said carbon oxides and hydrogen to a product comprising water, C 4 - gas and C 5 + `aromatic gasoline by 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; contacting at least the C 2 - portion of said C 4 - gas with a methanation catalyst at about 525° to 1000° F to convert such to synthetic natural gas; and recovering synthetic natural gas, aromatic gasoline and LPG.
Claim 3
Dependent Claim
72 words
The process claimed in claim 1 including converting said synthesis gas to a product comprising methanol by contact with a catalyst comprising zinc and copper at about 350° to 650° F and about 700 to 2500 psig; recycling unreacted synthesis gas to said methanol synthesis; and converting a portion of the methanol synthesis product to a product comprising aromatic gasoline by contact thereof at about 500° to 1200° F with said zeolite.
Claim 4
Dependent Claim
56 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 activity for reducing carbon monoxide and low catalytic activity for hydrogenating olefins, at about 300° to 800° F and about 50 to 1500 psig.
Claim 5
Dependent Claim
27 words
The process claimed in claim 3 wherein said metal value is at least one member selected from the group consisting of thorium, ruthenium, iron, rhodium and cobalt.
Claim 6
Dependent Claim
12 words
The process claimed in claim 1 wherein said zeolite is a ZSM-5.
Claim 7
Dependent Claim
29 words
The process claimed in claim 2 including admixing methane containing off gas from said methanol synthesis and C 4 - gas from said methanol aromatization and methanating said admixture.
Claim 8
Dependent Claim
24 words
The process claimed in claim 1 wherein said methanation catalyst is a member selected from the group consisting of nickel, cobalt, platinum and ruthenium.
References Cited (Backward Citations)
US60192A
Cited
US3013984A
Cited
US3709919A
Cited
US3755137A
Cited
US3839186A
Cited
US3930812A
Cited
US3894107A
Cited
US3904386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-19 | 1981-03-21 | 1981-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-19 | 1985-03-21 | 1985-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-19 | 1989-03-21 | 1989-09-20 | $7700.00 | Window Closed / Lapsed |