US3936353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of carbohydrate materials to petroleum type hydrocarbons
Assignee: Mobil Oil AS
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Filing: 1974-12-20
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Granted: 1976-02-03
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Expires: 1994-12-20
Abstract
Abstract Microbial conversion of agricultural carbohydrate materials to alcohols followed by direct conversion of the oxygenated microbial reaction product to a hydrocarbon product comprising a substantial highly aromatic fraction which is liquid at normal temperatures and pressures. This latter conversion is carried out in the effective presence of a high silica to alumina ratio zeolite like ZSM-5.
Inventors
- 👤 Nai Yuen Chen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:39
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/20; C10; C10G; C10G3/00; C10G3/42; C10G3/44; C10G3/48; C10G3/49; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/40; C10G2300/00; C10G2300/10; C10G2300/1011; C10G2300/1014; C10G2300/40; C10G2300/4093; C10G2400/00; C10G2400/02; Y; Y02; Y02P; Y02P30/00; Y02P30/20; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/93; Y10S585/934
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
117 words
In the process of converting carbohydrates to gasoline boiling range hydrocarbons comprising fermenting said carbohydrates to an intermediate product comprising water, alcohol and solid fermentation products; distilling the alcohol from said intermediate product; and converting said alcohol to said hydrocarbons by contacting such with a crystalline aluminosilicate zeolite catalyst having a silica to alumina ratio of at least 12 and a constraint index of about 1 to 12 at about 500° to 1000°F; the improvement which comprises instead of distilling said intermediate product, flashing said intermediate product to remove a distillate of alcohol and about 40 to 70 weight percent water therefrom; and directly contacting said wateralcohol distillate from said flashing with said zeolite at said temperature.
Claim 2
Dependent Claim
117 words
In the process of converting carbohydrates to gasoline boiling range hydrocarbons comprising fermenting said carbohydrates to an intermediate product comprising water, alcohol and solid fermentation products; distilling the alcohol from said intermediate product; and converting said alcohol to said hydrocarbons by contacting such with a crystalline aluminosilicate zeolite catalyst having a silica to alumina ratio of at least 12 and a constraint index of about 1 to 12 at about 500° to 1000°F; the improvement which comprises instead of distilling said intermediate product, flashing said intermediate product to remove a distillate of alcohol and about 40 to 70 weight percent water therefrom; and directly contacting said wateralcohol distillate from said flashing with said zeolite at said temperature.
Claim 3
Dependent Claim
21 words
The improved process claimed in claim 1 including stripping the fermenter mash to a distillate of about half water, half alcohol.
Claim 4
Dependent Claim
13 words
The improved 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) | 1979-02-02 | 1979-08-04 | 1980-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-02 | 1983-08-04 | 1984-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-02 | 1987-08-04 | 1988-02-03 | $7700.00 | Window Closed / Lapsed |