US3894102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of synthesis gas to gasoline
Assignee: Mobil Oil AS
•
Filing: 1973-08-09
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Granted: 1975-07-08
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Expires: 1993-08-09
Abstract
Abstract Contacting snythesis gas (mixed carbon monoxide and hydrogen) with a mixture of a carbon monoxide hydrogenation catalyst and an acid dehydration catalyst to produce a first stage product comprising dimethyl ether and contacting this first stage product, preferably in its entirety, with a crystalline aluminosilicate having a silica to alumina ratio of at least about 12 and a constraint index of about 1 to 12 to convert it to high octane gasoline.
Inventors
- 👤 Clarence D Chang
- 👤 Anthony J Silvestri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:09
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/40; B01J29/405; B01J29/42; B01J29/46; B01J29/48; C; C07; C07C; C07C29/00; C07C29/15; C07C29/151; C07C29/153; C07C29/154; C07C41/00; C07C41/01; C10; C10G; C10G3/00; C10G3/42; C10G3/44; C10G3/48; C10G3/49; C10L; C10L1/00; C10L1/04; C10L1/06; C10G2300/00; C10G2300/10; C10G2300/1022; C10G2300/20; C10G2300/30; C10G2300/301; C10G2400/00; C10G2400/02; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52; Y02P30/00; Y02P30/20; Y10; Y10S; Y10S208/00; Y10S208/95; Y10S585/00; Y10S585/929; Y10S585/943
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
123 words
A PROCESS COMPRISING CONTACTING IN A FIRST STAGE A MIXTURE OF CARBON MONOXIDE AND HYDROGEN WITH A CATALYST COMPRISING A MIXTURE OR A METHANOL SYNTHESIS CATALYST AND AN ACIDIC DEHYDRATION CATALYST AT AN ELEVATED TEMPERATURE UP TO ABOUT 700*F AND SUCH COMBINATION OF CONDITIONS AS TO PRODUCE A FIRST STAGE PRODUCT COMPRISING DIMETHYL ETHER, AND CONTACTING AT LEAST SAID DIMETHYL ETHER WITH A CRYSTALLINE ALUMINOSILICATE ZEOLITE HAVING A SILICA TO ALUMINA RATIO OF AT LEAST ABOUT 12 TO 1 AND A CONSTRAINT INDEX OF ABOUT 1 TO 12 IN A SECOND STAGE AT ABOUT 550* TO 850*F UNDER SUCH COMBINATION OF CONDITIONS AS TO PRODUCE A PRODUCT THE ORGANIC PORTION OF WHICH IS PREDOMENANTLY LIQUID HYDROCARBONS BOILING IN THE C5 TO 400*F RANGE
Claim 2
Dependent Claim
123 words
A PROCESS COMPRISING CONTACTING IN A FIRST STAGE A MIXTURE OF CARBON MONOXIDE AND HYDROGEN WITH A CATALYST COMPRISING A MIXTURE OR A METHANOL SYNTHESIS CATALYST AND AN ACIDIC DEHYDRATION CATALYST AT AN ELEVATED TEMPERATURE UP TO ABOUT 700*F AND SUCH COMBINATION OF CONDITIONS AS TO PRODUCE A FIRST STAGE PRODUCT COMPRISING DIMETHYL ETHER, AND CONTACTING AT LEAST SAID DIMETHYL ETHER WITH A CRYSTALLINE ALUMINOSILICATE ZEOLITE HAVING A SILICA TO ALUMINA RATIO OF AT LEAST ABOUT 12 TO 1 AND A CONSTRAINT INDEX OF ABOUT 1 TO 12 IN A SECOND STAGE AT ABOUT 550* TO 850*F UNDER SUCH COMBINATION OF CONDITIONS AS TO PRODUCE A PRODUCT THE ORGANIC PORTION OF WHICH IS PREDOMENANTLY LIQUID HYDROCARBONS BOILING IN THE C5 TO 400*F RANGE
Claim 3
Dependent Claim
29 words
A process as claimed in claim 1 including utilizing as said first stage catalyst a mixture of said methanol synthesis catalyst and gamma -alumina as said acid dehydration catalyst.
Claim 4
Dependent Claim
18 words
A process as claimed in claim 1 wherein said first stage is carried out at least about 300*F.
Claim 5
Dependent Claim
14 words
A process as claimed in claim 1 wherein the second stage catalyst is HZSM-5.
Claim 6
Dependent Claim
23 words
A process as claimed in claim 4 wherein the methanol synthesis catalyst comprises mixed oxides of zinc, chromium, copper and a rare earth.
References Cited (Backward Citations)
US3728408A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |