US3577867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for cooling heated adsorbent beds
Assignee: ConocoPhillips Co
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Filing: 1968-08-19
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Granted: 1971-05-11
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Expires: 1988-08-19
Abstract
Abstract Method and apparatus for cooling a heated regenerated bed in a gas sorption process. Cooling gas is continually circulated through the heated bed in a closed cooling circuit; by maintaining a positive back pressure on the cooling circuit, no gas is permitted to leave the cooling circuit during the cooling step.
Inventors
- 👤 Clem A Barrere Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:03
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; B01D2258/00; B01D2258/06; B01D2259/00; B01D2259/40; B01D2259/40001; B01D2259/40083; B01D2259/40088; B01D2259/4009
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
46 words
The method of claim 1 wherein step (e) comprises maintaining a gas back pressure on the flow path defined by steps (a), (b), (c), and (d) from an exterior gas pressure source, said back pressure being sufficient to maintain said gas within said defied flow path.
Claim 2
Dependent Claim
16 words
The method of claim 2 wherein the source of said back pressure is a lean gas.
Claim 3
Dependent Claim
13 words
The method of claim 3 wherein said lean gas is a feed gas.
Claim 4
Dependent Claim
13 words
The method of claim 3 wherein said lean gas is stripped residue gas.
Claim 5
Dependent Claim
184 words
A cyclical process for the recovery of condensables from a raw feed gas stream comprising: a. flowing said raw gas stream through a sorbent body wherein condensables are adsorbed; b. removing a stripped residue gas stream from said first sorbent body; c. flowing a heated regeneration gas stream through said sorbent body wherein condensables are adsorbed thereby heating said sorbent body and vaporizing condensables into said flowing heated gas streams; d. cooling said flowing heated gas stream thereby condensing said vaporized condensables; e. collecting said condensed condensables of (d); f. flowing a cooling gas stream through said heated sorbent body of (c); g. cooling the effluent stream of cooling gas from said heated sorbent body of (f); h. recycling all of the cooled effluent gas stream of (g) to the heated sorbent body of (f); i. maintaining said cooling gas stream in fluid communication with a source of gas at a pressure sufficient to maintain said cooling gas stream within its defined flow path; and j. confining all gas entering the flow path defined by steps (f), (g), and (h) to said flow path.
Claim 6
Dependent Claim
19 words
The method of claim 6 wherein said source of gas in (i) is said feed gas stream of (a).
Claim 7
Dependent Claim
20 words
The method of claim 6 wherein said source of gas in (i) is said stripped residue gas stream of (b).
Claim 8
Dependent Claim
31 words
The method of claim 6 wherein said source of gas in (i) is a gas other than the feed gas stream of (a) and the stripped residue gas stream of (b).
Claim 9
Dependent Claim
22 words
The method of claim 6 wherein each of a series of sorbent bodies is sequentially cycled through the steps of claim 6.
Claim 10
Dependent Claim
46 words
The method of claim 6 wherein prior to said step of cooling of (d) the gas present in said heated sorbent body of (c) is displaced by a lean gas into another sorbent body in which said step of flowing a heated regeneration gas of (c)
Claim 11
Dependent Claim
50 words
The method of claim 1 wherein step (e) comprises retaining essentially all of said circulating stream of gas within the flow path defined by steps (a), (b), (c), and (d) by means of a check valve situated in a conduit between said flow path and an exterior gas pressure source.
Claim 12
Dependent Claim
17 words
The method of claim 12 wherein the exterior gas pressure source is the lean gas pressure source.
Claim 13
Dependent Claim
17 words
The method of claim 12 wherein the exterior gas prEssure source is a feed gas pressure source.
Claim 14
Dependent Claim
18 words
The method of claim 12 wherein the exterior gas pressure source is a stripped residue gas pressure source.
References Cited (Backward Citations)
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Cited
US3008539A
Cited
US3109722A
Cited
US3121002A
Cited
US3238701A
Cited
US3479797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |