US4368058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Maximizing flow of absorption liquid in absorption methods
Assignee: Phillips Petroleum Co
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Filing: 1980-07-30
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Granted: 1983-01-11
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Expires: 2000-07-30
Abstract
Abstract Flow of lean oil to an absorption section of an absorber is controlled responsive to pressure drop at least a portion of said absorption section. Flow of lean oil can be maximized, short of flooding, responsive to said pressure differential. Apparatus is also described.
Inventors
- 👤 Ralph P. Crowley
- 👤 Max D. Pope
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:42
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/14; B01D53/1412
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
92 words
A method for controlling an absorption column comprising: (a) subjecting a mixture of vapors to conditions sufficient to condense a portion thereof to produce a lean absorption liquid, (b) passing said lean absorption liquid to an absorption section of said absorption column, (c) controlling the flow rate of said lean absorption liquid to said absorption section in response to a difference in pressure between two points at different levels in said absorption section, and (d) contacting uncondensed vapors of said mixture of vapors with said lean absorption liquid in said absorption section.
Claim 2
Independent Claim
92 words
A method for controlling an absorption column comprising: (a) subjecting a mixture of vapors to conditions sufficient to condense a portion thereof to produce a lean absorption liquid, (b) passing said lean absorption liquid to an absorption section of said absorption column, (c) controlling the flow rate of said lean absorption liquid to said absorption section in response to a difference in pressure between two points at different levels in said absorption section, and (d) contacting uncondensed vapors of said mixture of vapors with said lean absorption liquid in said absorption section.
Claim 3
Dependent Claim
23 words
A method in accordance with claim 1 wherein maximum flow of lean absorption liquid to said absorption section, short of flooding, is maintained.
Claim 4
Dependent Claim
29 words
A method in accordance with claim 1 wherein excess lean absorption liquid is admixed with at least a portion of said uncondensed vapors and passed to said absorption column.
Claim 5
Dependent Claim
36 words
A method in accordance with claim 3 wherein said absorption column comprises an absorption section and a rectifying section and wherein said mixture of excess lean oil and uncondensed vapors is passed to said rectifying section.
Claim 6
Dependent Claim
22 words
A method in accordance with claim 3 wherein said vapors are hydrocarbon vapors and said lean absorption liquid is lean absorption oil.
Claim 7
Independent Claim
91 words
An apparatus which comprises: (a) an absorption column comprising an absorption section and a rectifying section, (b) a lean absorption liquid inlet to said absorption section, (c) means for condensing a mixture of vapors to produce lean absorption liquid, (d) means for controlling the flow of said lean absorption liquid to said absorption section in response to a pressure differential between two points at different levels in said absorption section and (e) means for combining excess lean absorption liquid and uncondensed vapors and for passing said mixture to said rectifying section.
Claim 8
Independent Claim
91 words
An apparatus which comprises: (a) an absorption column comprising an absorption section and a rectifying section, (b) a lean absorption liquid inlet to said absorption section, (c) means for condensing a mixture of vapors to produce lean absorption liquid, (d) means for controlling the flow of said lean absorption liquid to said absorption section in response to a pressure differential between two points at different levels in said absorption section and (e) means for combining excess lean absorption liquid and uncondensed vapors and for passing said mixture to said rectifying section.
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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) | 1986-01-10 | 1986-07-12 | 1987-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-10 | 1990-07-12 | 1991-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-10 | 1994-07-12 | 1995-01-11 | $7700.00 | Window Closed / Lapsed |