US4000205A
Expired / Lapsed
US
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Purification of feed gas streams containing ferric chloride in oxychlorination
Assignee: Stauffer Chemical Co
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Filing: 1975-07-14
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Granted: 1976-12-28
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Expires: 1995-07-14
Abstract
Abstract Ferric chloride is removed from gas streams containing the same by passing the stream through a bed of activated alumina impregnated with potassium chloride or sodium chloride.
Inventors
- 👤 Ramsey G. Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:04
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/74; B01D53/86; B01D53/8659; C; C01; C01B; C01B7/00; C01B7/01; C01B7/07; C01B7/0706; C01B7/0718; C07; C07C; C07C17/00; C07C17/093; C07C17/15
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
104 words
In a process for oxychlorination of an aliphatic hydrocarbon and/or a chlorinated derivative thereof, in which the hydrocarbon and/or its chlorinated derivative is contacted with a hydrogen chloride stream containing ferric chloride and an oxygen containing gas in the presence of a catalyst comprising cupric chloride, which is subject to disintegration and/or deterioration in the presence of ferric chloride, the improvement comprising passing at least the hydrogen chloride stream, prior to its being brought into contact with the catalyst comprising cupric chloride, through a bed consisting essentially of activated alumina impregnated with a member of the group consisting of potassium chloride and sodium chloride.
Claim 2
Dependent Claim
104 words
In a process for oxychlorination of an aliphatic hydrocarbon and/or a chlorinated derivative thereof, in which the hydrocarbon and/or its chlorinated derivative is contacted with a hydrogen chloride stream containing ferric chloride and an oxygen containing gas in the presence of a catalyst comprising cupric chloride, which is subject to disintegration and/or deterioration in the presence of ferric chloride, the improvement comprising passing at least the hydrogen chloride stream, prior to its being brought into contact with the catalyst comprising cupric chloride, through a bed consisting essentially of activated alumina impregnated with a member of the group consisting of potassium chloride and sodium chloride.
Claim 3
Dependent Claim
29 words
A process accoording to claim 1 in which the total oxychlorination feed is passed through the bed prior to being brought into contact with the catalyst comprising cupric chloride.
Claim 4
Dependent Claim
15 words
A process according to claim 1 in which the alumina is impregnated with potassium chloride.
Claim 5
Dependent Claim
15 words
A process according to claim 1 in which the alumina is impregnated with sodium chloride.
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) | 1979-12-28 | 1980-06-28 | 1980-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-28 | 1984-06-28 | 1984-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-28 | 1988-06-28 | 1988-12-28 | $7700.00 | Window Closed / Lapsed |