US3849082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon conversion process
Assignee: Chevron USA Inc
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Filing: 1970-06-26
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Granted: 1974-11-19
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Expires: 1990-06-26
Abstract
Abstract A process for producing gasoline blending stock which comprises (a) feeding an alcohol and a light hydrocarbon mixture containing at least tertiary olefins, linear olefins and isobutane to an etheration zone, (b) reacting the alcohol with the tertiary olefins in the etheration zone to obtain an ether and unreacted linear olefins and isobutane, (c) separating the ether from the linear olefins and isobutane, (d) feeding water and at least the linear olefins to a hydration zone, (e) reacting the water with the linear olefins in the hydration zone to obtain at least a secondary alcohol, (f) oxidizing the isobutane to obtain t-butyl alcohol, and (g) blending at least portions of the ether, secondary alcohol and t-butyl alcohol to produce a gasoline blending stock.
Inventors
- 👤 R Kozlowski
- 👤 R Sieg
- 👤 J Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:35
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/02; C10L1/023; C10L1/182; C10L1/1822; C10L1/1824; C10L1/185; C10L1/1852
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
125 words
A PROCESS FOR PRODUCING A GASOLINE BLENDING STOCK WHICH COMPRISES: A. FEEDING AN ALCOHOL AND A LIGHT HYDROCARBON MIXTURE CONTAINING AT LEAST TERTIARY OLEFINS, LINEAR OLEFINS AND INSOBUTANE TO AN ETHERATION ZONE, B. REACTING THE ALCOHOL WITH THE TERTIARY OLEFINS IN THE ETHERATION ZONE TO OBTAIN AN ETHER AND UNREACTED LINEAR OLEFINS AND ISOBUTANE, C. SEPARATING THE ETHER FROM THE LINEAR OLEFINS IN THE ETHERAD. FEEDING WATER AND AT LEAST A PORTION OF THE LINEAR OLEFINS TO A HYDRATION ZONE, E. REACTING THE WATER WITH THE LINEAR OLEFINS IN THE HYDRATION ZONE TO OBTAIN A PRODUCT ALCOHOL. F. OXIDIZING THE ISOBUTANE TO OBTAIN T-BUTYL ALCOHOL, AND G. BLENDING AT LEAST PORTIONS OF THE ETHER, PRODUCT ALCOHOL AND T-BUTYL ALCOHOL TO PRODUCE A GASOLINE BLENDING STOCK.
Claim 2
Dependent Claim
125 words
A PROCESS FOR PRODUCING A GASOLINE BLENDING STOCK WHICH COMPRISES: A. FEEDING AN ALCOHOL AND A LIGHT HYDROCARBON MIXTURE CONTAINING AT LEAST TERTIARY OLEFINS, LINEAR OLEFINS AND INSOBUTANE TO AN ETHERATION ZONE, B. REACTING THE ALCOHOL WITH THE TERTIARY OLEFINS IN THE ETHERATION ZONE TO OBTAIN AN ETHER AND UNREACTED LINEAR OLEFINS AND ISOBUTANE, C. SEPARATING THE ETHER FROM THE LINEAR OLEFINS IN THE ETHERAD. FEEDING WATER AND AT LEAST A PORTION OF THE LINEAR OLEFINS TO A HYDRATION ZONE, E. REACTING THE WATER WITH THE LINEAR OLEFINS IN THE HYDRATION ZONE TO OBTAIN A PRODUCT ALCOHOL. F. OXIDIZING THE ISOBUTANE TO OBTAIN T-BUTYL ALCOHOL, AND G. BLENDING AT LEAST PORTIONS OF THE ETHER, PRODUCT ALCOHOL AND T-BUTYL ALCOHOL TO PRODUCE A GASOLINE BLENDING STOCK.
Claim 3
Dependent Claim
36 words
A process in accordance with claim 1 wherein both the isobutane and linear olefins are fed to the hydration zone and unreacted isobutane is withdrawn from the hydration zone and is oxidized to obtain t-butyl alcohol.
Claim 4
Dependent Claim
39 words
A process in accordance with claim 1 wherein the light hydrocarbon mixture also contains n-butane and the n-butane is isomerized to obtain isobutane and at least a portion of the isobutane obtained by isomerization is oxidized to t-butyl alcohol.
Claim 5
Dependent Claim
21 words
A process in accordance with claim 1 wherein the light hydrocarbon mixture comprises C4-C5 hydrocarbons obtained from a hydrocarbon cracking process.
Claim 6
Dependent Claim
17 words
A process in accordance with claim 4 wherein the C4-C5 hydrocarbons are obtained from fluid catalytic cracking.
Claim 7
Dependent Claim
148 words
A process for producing a gasoline blending stock which comprises: a. feeding an alcohol and a C4-C5 cracking effluent stream, containing at least tertiary olefins, linear olefins, isobutane, n-butane and isopentane, to an etheration zone, b. reacting the alcohol with the tertiary olefins in the etheration zone to obtain an ether, c. separating the ether from unreacted linear olefins and paraffins, d. feeding water and the unreacted linear olefins and paraffins to a hydration zone, e. reacting the water with the unreacted linear olefins in the hydration zone and withdrawing a product alcohol and unreacted paraffins from the hydration zone, f. separating the product alcohol from the unreacted paraffins, g. separating the unreacted paraffins into at least isobutane and isopentane, h. oxidizing the isobutane to obtain t-butyl alcohol, i. blending at least a portion of the ether, product alcohol and t-butyl alcohol to produce a gasoline blending stock.
Claim 8
Dependent Claim
148 words
A process for producing a gasoline blending stock which comprises: a. feeding an alcohol and a C4-C5 cracking effluent stream, containing at least tertiary olefins, linear olefins, isobutane, n-butane and isopentane, to an etheration zone, b. reacting the alcohol with the tertiary olefins in the etheration zone to obtain an ether, c. separating the ether from unreacted linear olefins and paraffins, d. feeding water and the unreacted linear olefins and paraffins to a hydration zone, e. reacting the water with the unreacted linear olefins in the hydration zone and withdrawing a product alcohol and unreacted paraffins from the hydration zone, f. separating the product alcohol from the unreacted paraffins, g. separating the unreacted paraffins into at least isobutane and isopentane, h. oxidizing the isobutane to obtain t-butyl alcohol, i. blending at least a portion of the ether, product alcohol and t-butyl alcohol to produce a gasoline blending stock.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |