US4162273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkaline treatment of liquid propane containing HF
Assignee: Phillips Petroleum Co
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Filing: 1978-01-10
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Granted: 1979-07-24
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Expires: 1998-01-10
Abstract
Abstract Liquid propane containing HF is admixed in an eductor or sparger with aqueous alkaline solution, e.g., 2-5 percent aqueous NaOH maintained in a treating vessel, the eductor or sparger being located within a body of said alkaline treating agent in said vessel, thus to avoid explosion.
Inventors
- 👤 Frank W. Skraba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:24
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; C07C7/14833; C07C7/1485; C07C7/005; Y; Y10; Y10S; Y10S585/00; Y10S585/949; Y10S585/955
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
84 words
In the treatment of propane-containing stream resulting from an alkylation operation in which HF catalyst is employed and in which said stream has been subjected to an HF stripping to remove HF therefrom and to a defluorination step to decompose organic fluorides to form HF, the invention which comprises admixing said stream with a small portion of an aqueous alkaline treating agent in a mixing section to neutralize HF, said section being at a locus within a relatively large body of said treating agent.
Claim 2
Dependent Claim
84 words
In the treatment of propane-containing stream resulting from an alkylation operation in which HF catalyst is employed and in which said stream has been subjected to an HF stripping to remove HF therefrom and to a defluorination step to decompose organic fluorides to form HF, the invention which comprises admixing said stream with a small portion of an aqueous alkaline treating agent in a mixing section to neutralize HF, said section being at a locus within a relatively large body of said treating agent.
Claim 3
Dependent Claim
28 words
A treatment according to claim 1 wherein said large body of treating agent is in a zone which also contains above said treating agent a liquid propane phase.
Claim 4
Dependent Claim
17 words
A treatment according to claim 2 wherein there is above the liquid propane a space containing vapor.
Claim 5
Dependent Claim
13 words
A treatment according to claim 1 wherein the mixing section comprises an eductor.
Claim 6
Dependent Claim
13 words
A treatment according to claim 1 wherein the mixing section comprises a sparger.
Claim 7
Dependent Claim
22 words
A treatment according to claim 5 wherein the sparger extends along the bottom of said relatively large body of said treating agent.
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) | 1982-07-23 | 1983-01-22 | 1983-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-23 | 1987-01-22 | 1987-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-23 | 1991-01-22 | 1991-07-24 | $7700.00 | Window Closed / Lapsed |