Patent US4076761A successfully refreshed from Google Patents.
US4076761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of gasoline
Assignee: Mobil Oil AS
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Filing: 1974-12-05
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Granted: 1978-02-28
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Expires: 1994-12-05
Abstract
Abstract Synthesis gas comprising a mixture of carbon monoxide and hydrogen is derived from fossil fuels and catalytically converted in a first reaction zone to a mixture of methanol and dimethyl ether which in turn is converted in a separate reaction zone in contact with a crystalline aluminosilicate zeolite catalyst having a silica to alumina ratio of at least about 12 and a constraint index of about 1 to 12, and preferably a crystal density in the hydrogen form of not substantially below about 1.6 grams per cubic centimeter to a product which is resolved into a high octane gasoline fraction, a light hydrocarbon gas fraction which may be liquefied and a hydrogen-rich gaseous by-product which is recycled to the conversion of fossil fuels to synthesis gas or may be otherwise used.
Inventors
- 👤 Clarence D. Chang
- 👤 Anthony J. Silvestri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:02
CPC Classifications
C; C10; C10G; C10G3/00; C10G3/42; C10G3/44; C10G3/48; C10G3/49; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/18; B01J29/40; B01J2229/00; B01J2229/30; B01J2229/36; C07; C07C; C07C2521/00; C07C2521/02; C07C2521/04; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/40; C07C2529/42; C07C2529/44; C07C2529/46; C07C2529/65; C07C2529/70; C10G2300/00; C10G2300/10; C10G2300/1022; C10G2300/40; C10G2300/4006; C10G2300/4012; C10G2300/4018; C10G2400/00; C10G2400/02; C10G2400/28; Y; Y02; Y02P; Y02P30/00; Y02P30/20; Y10; Y10S; Y10S208/00; Y10S208/95; Y10S585/00; Y10S585/929; Y10S585/943
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
138 words
In the process for manufacture of liquid hydrocarbon fuels boiling in the gasoline boiling range from coal which comprises converting the coal to a gaseous mixture of hydrogen and carbon oxides and converting said gaseous mixture to normally liquid hydrocarbons and oxygen-substituted hydrocarbons comprising methanol; the improvement comprising the additional step of contacting at least said oxygen-substituted hydrocarbons including said methanol with a catalytically active aluminosilicate zeolite having a silica to alumina ratio of at least about 12, a constraint index of about 1 to 12 and a crystal density, in the hydrogen form, of not substantially below about 1.6 grams per cubic centimeter at a temperature of about 500° to 1000° F, a space velocity of about 0.1 to 50 liquid hourly space velocity, and a pressure of about 1 to 50 atmospheres; and, covering liquid hydrocarbons.
Claim 2
Dependent Claim
138 words
In the process for manufacture of liquid hydrocarbon fuels boiling in the gasoline boiling range from coal which comprises converting the coal to a gaseous mixture of hydrogen and carbon oxides and converting said gaseous mixture to normally liquid hydrocarbons and oxygen-substituted hydrocarbons comprising methanol; the improvement comprising the additional step of contacting at least said oxygen-substituted hydrocarbons including said methanol with a catalytically active aluminosilicate zeolite having a silica to alumina ratio of at least about 12, a constraint index of about 1 to 12 and a crystal density, in the hydrogen form, of not substantially below about 1.6 grams per cubic centimeter at a temperature of about 500° to 1000° F, a space velocity of about 0.1 to 50 liquid hourly space velocity, and a pressure of about 1 to 50 atmospheres; and, covering liquid hydrocarbons.
Claim 3
Dependent Claim
12 words
A process as claimed in claim 1 wherein said catalyst is H-ZSM-5.
Claim 4
Dependent Claim
21 words
A process as claimed in claim 1 wherein the methanolsynthesis catalyst comprises zinc oxide and said crystalline aluminosilicate catalyst is H-ZSM-5.
Claim 5
Dependent Claim
36 words
A process as claimed in claim 1 wherein unconverted synthesis gas is segregated from said first reaction zone effluent stream prior to contacting the remainder of said stream with said catalyst in said second reaction zone.
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) | 1981-02-27 | 1981-08-29 | 1982-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-27 | 1985-08-29 | 1986-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-27 | 1989-08-29 | 1990-02-28 | $7700.00 | Window Closed / Lapsed |