US3785121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination gas stripper and cooling tower
Assignee: Individual
•
Filing: 1972-03-27
•
Granted: 1974-01-15
•
Expires: 1992-03-27
Abstract
Abstract A method and apparatus for simultaneously stripping a liquid stream contaminated with a dissolved gas impurity in a stripping section and cooling a fluid (liquid or gas) in a fluid cooling section. The stripping efficiency is increased by supplying an air stream for stripping which has been warmed by heat transfer with the cooled fluid in the fluid cooling section. In one embodiment, one or more fluid cooling sections of a crossflow type are disposed below and to the sides of an upright stripping section so that a fan can draw air sequentially through both sections. In another embodiment, fluid cooling sections of crossflow type are disposed at the sides of the stripping section at the same elevation. For economy, the cooled fluid exiting from the liquid cooling section may be directed past a heat generating source for cooling the same and thereafter recycling to the fluid cooling zone.
Inventors
- 👤 P Phelps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:28
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/0005; Y; Y10; Y10S; Y10S261/00; Y10S261/11
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
30 words
A method as in claim 1 in which the air supplied to the cooling zone is at an ambient temperature and is intimately contacted with said fluid in said zone.
Claim 2
Dependent Claim
13 words
A method as in claim 1 in which the gas impurity is ammonia.
Claim 3
Dependent Claim
53 words
A method as in claim 1 in which at least a portion of the fluid exiting the fluid cooling zone is directed to a heat exchange zone in which said fluid is warmed by heat transfer from a heat generating source and said warmed fluid is thereafter recycled to the fluid cooling zone.
Claim 4
Dependent Claim
37 words
A method as in claim 4 in which the fluid and contaminated liquid streams comprise essentially the same liquid and at least a portion of the last-named stream is supplied as make-up liquid to the recycling fluid.
Claim 5
Dependent Claim
28 words
A method as in claim 1 in which the temperature of the warmed air stream supplied to said stripping zone is at least 5*F above the ambient temperature.
Claim 6
Dependent Claim
107 words
In a combination fluid cooling and gas stripping apparatus, a fluid cooling section having fluid inlet and outlet openings, and air inlet and outlet openings, a packed stripping section having an upper liquid inlet opening, a lower liquid outlet opening, and air inlet and outlet openings, said fluid cooling section air outlet openings being in generally open communication with and proximate to said stripping column air inlet opening, said fluid inlet and outlet openings being different than and spaced apart from said liquid inlet and outlet openings, and barrier means for substantially preventing intermixing of fluid in said fluid cooling section with liquid in said stripping section.
Claim 7
Dependent Claim
81 words
An apparatus as in claim 7 together with fan means, in which the fluid cooling section is of a crossflow type, the stripping section is of a counterflow type and the air outlet opening of the fluid cooling section is disposed at an elevation at which air is capable of being drawn by said fan means therethrough in a path to the lower portion of the stripping section and upwardly through the same, said path being generally unobstructed to gas flow.
Claim 8
Dependent Claim
29 words
An apparatus as in claim 7 in which the fluid cooling section includes a fluid conduit with high heat conductivity and disposed transverse to the direction of air flow.
Claim 9
Dependent Claim
26 words
An apparatus as in claim 7 in which the fluid cooling section includes packing capable of providing direct contact between air and a gravitating liquid fluid.
Claim 10
Dependent Claim
42 words
An apparatus as in claim 7 together with a recycle conduit for liquid to provide communication between said fluid cooling section fluid inlet and outlet openings, and heat exchange means associated with said recycle conduit for transmitting heat to fluid flowing therethrough.
Claim 11
Dependent Claim
45 words
An apparatus as in claim 7 in which said stripping section is of a counterflow type and said cooling section is of a crossflow type with a horizontally open gas outlet opening disposed to the side of and below said stripping section air inlet opening.
Claim 12
Dependent Claim
27 words
An apparatus as in claim 7 in which said cooling section and stripping sections are of a crossflow type with substantial portions disposed at the same elevation.
References Cited (Backward Citations)
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US3594987A
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US3404072A
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US3428426A
Cited
US3540189A
Cited
US3626672A
Cited
US3733777A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |