US3864419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tertiary mono olefin extraction with mixed acids
Assignee: Goodrich Corp
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Filing: 1973-10-30
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Granted: 1975-02-04
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Expires: 1993-10-30
Abstract
Abstract A liquid refinery hydrocarbon stream containing tertiary olefins is contacted with a mixture of sulfuric acid, water and at least one aliphatic monocarboxylic acid to extract the tertiary olefins from the hydrocarbon stream in an acid extract which may be further reacted directly, or treated to remove the tertiary olefins or the tertiary alcohols in concentrated form.
Inventors
- 👤 Donald E Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:31
CPC Classifications
C; C10; C10G; C10G21/00; C10G21/06; C07; C07C; C07C7/00; C07C7/148; C07C7/17; C07C7/171
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
126 words
A PROCESS FOR EXTRACTING TERTIARY MONO OLEFINS FROM A LIQUID REFINERY C4 TO 6 HYDROCARBON STREAM WHEREIN SAID STREAM IS CONTACTED WITH A MIXTURE CONTAINING (A) FROM ABOUT 44% TO ABOUT 71% BY WEIGHT OF SULFURIC ACID, (B) FROM ABOUT 1% TO ABOUT 50% BY WEIGHT OF AT LEAST ONE ALIPHATIC MONOCARBOXYLIC ACID CONTAINING FROM 2 TO 6 CARBON ATOMS, AND (C) WATER IN A MOLAR RATIO OF WATER OT OLEFIN OF AT LEAST 1.5/1, SAID WATER MAKING UP THE DIFFERENCE BETWEEN TOTAL ACID PERCENTAGE AND 100% OF SAID MIXTURE, THE WEIGHT RATIO OF SAID MIXTURE TO SAID HYDROCARBON STREAM IS AT LEAST 0.7/1, AND MIXTURE IS CONTACTED WITH SAID HYDROCARBON STREAM AT A TEMPERATURE O IN THE RANGE OF FROM ABOUT -10*C TO ABOUT 50*C.
Claim 2
Dependent Claim
126 words
A PROCESS FOR EXTRACTING TERTIARY MONO OLEFINS FROM A LIQUID REFINERY C4 TO 6 HYDROCARBON STREAM WHEREIN SAID STREAM IS CONTACTED WITH A MIXTURE CONTAINING (A) FROM ABOUT 44% TO ABOUT 71% BY WEIGHT OF SULFURIC ACID, (B) FROM ABOUT 1% TO ABOUT 50% BY WEIGHT OF AT LEAST ONE ALIPHATIC MONOCARBOXYLIC ACID CONTAINING FROM 2 TO 6 CARBON ATOMS, AND (C) WATER IN A MOLAR RATIO OF WATER OT OLEFIN OF AT LEAST 1.5/1, SAID WATER MAKING UP THE DIFFERENCE BETWEEN TOTAL ACID PERCENTAGE AND 100% OF SAID MIXTURE, THE WEIGHT RATIO OF SAID MIXTURE TO SAID HYDROCARBON STREAM IS AT LEAST 0.7/1, AND MIXTURE IS CONTACTED WITH SAID HYDROCARBON STREAM AT A TEMPERATURE O IN THE RANGE OF FROM ABOUT -10*C TO ABOUT 50*C.
Claim 3
Dependent Claim
86 words
A process of claim 1 wherein said hydrocarbon stream is selected from the group consisting of C4 to C5 compound fractions, said mixture contains from about 2% to about 26% by weight of an aliphatic mOnocarboxylic acid selected from the group consisting of acetic acid and propionic acid, the weight ratio of said mixture to said hydrocarbon stream is at least 1/1, said mixture is contacted with said hydrocarbon stream at a temperature of from about 0*C to about 30*C, and thereafter separated from said acid.
Claim 4
Dependent Claim
56 words
A process of claim 2 wherein said hydrocarbon stream is a C5 compound fraction, said aliphatic monocarboxylic acid is acetic acid, said hydrocarbon stream is contacted with said mixture at a temperature of from about 0*C to about 10*C and thereafter separated from said mixture, and said tertiary monoolefins are thereafter recovered from said acid mixture.
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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |