US4079095A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of light olefins
Assignee: Mobil Oil AS
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Filing: 1976-11-04
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Granted: 1978-03-14
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Expires: 1996-11-04
Abstract
Abstract A catalytic process is provided for converting an organic charge consisting essentially of methanol, dimethyl ether or mixtures thereof together with at least about 0.25 moles of water per mole of said organic charge to a hydrocarbon product rich in ethylene and propylene by contact, under conversion conditions, with a catalyst comprising a crystalline aluminosilicate zeolite of the erionite-offretite family.
Inventors
- 👤 Edwin N. Givens
- 👤 Charles J. Plank
- 👤 Edward J. Rosinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:20
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/20; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/50; Y; Y02; Y02P; Y02P30/00; Y02P30/20; Y02P30/40; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/901; Y10S585/906; Y10S585/949; Y10S585/954
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
93 words
A catalytic process for converting an organic charge consisting essentially of methanol, dimethyl ether or mixtures thereof, together with at least about 0.25 moles of water per mole of said organic charge, to a hydrocarbon product rich in ethylene and propylene which comprises contacting said charge under conversion conditions including a temperature between about 500° F. and about 1000° F., a pressure from about 0.1 to 30 atmospheres and a weight hourly space velocity of between about 0.1 and about 30 with a catalyst comprising a crystalline aluminosilicate zeolite of the erionite-offretite family.
Claim 2
Dependent Claim
93 words
A catalytic process for converting an organic charge consisting essentially of methanol, dimethyl ether or mixtures thereof, together with at least about 0.25 moles of water per mole of said organic charge, to a hydrocarbon product rich in ethylene and propylene which comprises contacting said charge under conversion conditions including a temperature between about 500° F. and about 1000° F., a pressure from about 0.1 to 30 atmospheres and a weight hourly space velocity of between about 0.1 and about 30 with a catalyst comprising a crystalline aluminosilicate zeolite of the erionite-offretite family.
Claim 3
Dependent Claim
18 words
The process of claim 1 wherein ethylene and propylene constitute a major proportion of the hydrocarbon reaction product.
Claim 4
Dependent Claim
16 words
The process of claim 2 wherein the ethylene content of said product exceeds the propylene content.
Claim 5
Dependent Claim
13 words
The process of claim 1 wherein said organic charge consists essentially of methanol.
Claim 6
Dependent Claim
23 words
The process of claim 1 wherein the amount of water added is greater than about 0.5 moles per mole of said organic charge.
Claim 7
Dependent Claim
27 words
The process of claim 1 wherein unconverted methanol or dimethyl ether and at least part of the water in the product is recycled to the reaction zone.
Claim 8
Dependent Claim
25 words
The process of claim 1 wherein said crystalline aluminosilicate has been thermally treated at a temperature of from about 200° C. to about 750° C.
Claim 9
Dependent Claim
30 words
The process of claim 7 wherein at least 10 percent of the cationic sites of said crystalline aluminosilicate zeolite are occupied by ions other than alkali or alkaline earth metals.
Claim 10
Dependent Claim
15 words
The process of claim 8 wherein said ions are hydrogen, hydrogen precursor or combinations thereof.
Claim 11
Dependent Claim
16 words
The process of claim 1 wherein said crystalline aluminosilicate zeolite is predominately in the hydrogen form.
Claim 12
Dependent Claim
16 words
The process of claim 1 wherein said crystalline aluminosilicate zeolite is contained in a matrix therefor.
Claim 13
Dependent Claim
12 words
The process of claim 1 wherein said crystalline aluminosilicate zeolite is erionite.
Claim 14
Dependent Claim
12 words
The process of claim 1 wherein said crystalline aluminosilicate zeolite is offretite.
Claim 15
Dependent Claim
13 words
The process of claim 1 wherein said crystalline aluminosilicate zeolite is zeolite T.
Claim 16
Dependent Claim
12 words
The process of claim 1 wherein said crystalline aluminoslicate zeolite is ZSM-34.
Claim 17
Dependent Claim
12 words
The process of claim 8 wherein said crystalline aluminosilicate zeolite is erionite.
Claim 18
Dependent Claim
12 words
The process of claim 8 wherein said crystalline aluminosilicate zeolite is offretite.
Claim 19
Dependent Claim
13 words
The process of claim 8 wherein said crystalline aluminosilicate zeolite is zeolite T.
Claim 20
Dependent Claim
12 words
The process of claim 8 wherein said crystalline aluminosilicate zeolite is ZSM-34.
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) | 1981-03-13 | 1981-09-12 | 1982-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-13 | 1985-09-12 | 1986-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-13 | 1989-09-12 | 1990-03-14 | $7700.00 | Window Closed / Lapsed |