Patent US4474584A successfully refreshed from Google Patents.
US4474584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cooling and deashing
Assignee: Texaco Development Corp
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Filing: 1983-06-02
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Granted: 1984-10-02
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Expires: 2003-06-02
Abstract
Abstract Hot synthesis gas is cooled and deashed by passage through first zone in contact with a downwardly descending film of cooling liquid, a second zone in contact with a spray of cooling liquid, a third zone in contact with a body of cooling liquid, and a fourth zone in contact with a spray of cooling liquid--at least a portion of the cooling liquid to the first zone preferably being recycled cooling liquid from which at least a portion of the solids contained therein has been removed.
Inventors
- 👤 Wolfgang Koog
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:24
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/72; C10J3/82; C10J3/84; C10J3/845; C10J3/46; C10J3/48; C10J3/485; C10J3/52; C10J3/526; C10J3/74; C10J3/78; C10K; C10K1/00; C10K1/08; C10K1/10; C10K1/101; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/093; C10J2300/0933; C10J2300/0943; C10J2300/0946; C10J2300/0953; C10J2300/0956; C10J2300/0959; C10J2300/0973; Y; Y10; Y10S; Y10S48/00; Y10S48/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
192 words
The method of cooling a hot synthesis gas which comprises passing hot synthesis gas at initial temperature downwardly through a first contacting zone in a quench chamber; passing cooling liquid downwardly as a film on the walls of said first contacting zone and a contact with said downwardly descending synthesis gas thereby cooling said synthesis gas and forming a cooled synthesis gas; passing said cooled synthesis gas downwardly through a second contacting zone in said quench chamber in contact with a downwardly descending film on the walls of said second contacting zone; spraying cooling liquid into said downwardly descending cooled synthesis gas in said second contacting zone thereby forming a downwardly descending further cooled synthesis gas; passing said further cooled synthesis gas into a body of cooling liquid in a third contacting zone in said quench chamber thereby forming a further cooled synthesis gas containing a decreased solids content; passing said further cooled synthesis gas containing a decreased solids content into contact with a sprayed stream of cooling liquid in a fourth contacting zone in said quench chamber thereby forming a cooled product synthesis gas; and recovering said cooled product synthesis gas.
Claim 2
Independent Claim
192 words
The method of cooling a hot synthesis gas which comprises passing hot synthesis gas at initial temperature downwardly through a first contacting zone in a quench chamber; passing cooling liquid downwardly as a film on the walls of said first contacting zone and a contact with said downwardly descending synthesis gas thereby cooling said synthesis gas and forming a cooled synthesis gas; passing said cooled synthesis gas downwardly through a second contacting zone in said quench chamber in contact with a downwardly descending film on the walls of said second contacting zone; spraying cooling liquid into said downwardly descending cooled synthesis gas in said second contacting zone thereby forming a downwardly descending further cooled synthesis gas; passing said further cooled synthesis gas into a body of cooling liquid in a third contacting zone in said quench chamber thereby forming a further cooled synthesis gas containing a decreased solids content; passing said further cooled synthesis gas containing a decreased solids content into contact with a sprayed stream of cooling liquid in a fourth contacting zone in said quench chamber thereby forming a cooled product synthesis gas; and recovering said cooled product synthesis gas.
Claim 3
Dependent Claim
41 words
The method of cooling a hot synthesis gas as claimed in claim 1 wherein said hot synthesis gas is at temperature of 1800° F.-3500° F. and contains solids in amount of 1-10 pounds per thousand cubic feet (NTP) of dry gas.
Claim 4
Dependent Claim
25 words
The method of cooling a hot synthesis gas as claimed in claim 1 wherein said cooling liquid is at inlet temperature of 100° F.-500° F.
Claim 5
Dependent Claim
29 words
The method of cooling a hot synthesis gas as claimed in claim 1 wherein said gas is cooled by 200° F.-500° F. during passage through said first contacting zone.
Claim 6
Dependent Claim
28 words
The method of cooling a hot synthesis gas as claimed in claim 1 wherein said gas is cooled by 600°-1300° F. during passage through said second contacting zone.
Claim 7
Dependent Claim
28 words
The method of cooling a hot synthesis gas as claimed in claim 1 wherein said gas is cooled by 200°-650° F. during passage through said third contacting zone.
Claim 8
Dependent Claim
34 words
The method of cooling a hot synthesis gas as claimed in claim 1 wherein said gas leaving said third contacting zone contains about 10-20 w % of the solids in the hot synthesis gas.
Claim 9
Independent Claim
328 words
The method of cooling from an initial high temperature of 1800°-3500° F. to a lower final temperature of about 400°-700° F., a hot synthesis gas containing solid particles including ash and char which comprises passing hot synthesis gas containing ash and char at initial hot temperature downwardly through a first contacting zone in a quench chamber; passing cooling liquid, containing less than about 0.1 w % of solid particles having a particle size larger than about 100 microns, into said first contacting zone; passing said hot synthesis gas through said first contacting zone in the presence of a falling film of cooling liquid passing downwardly on the walls of said contacting zone thereby forming a cooled synthesis gas; passing said cooled synthesis gas downwardly through a second contacting zone in said quench chamber in contact with a downwardly descending film on the walls of said second contacting zone; spraying cooling liquid into said downwardly descending cooled synthesis gas in said second contacting zone thereby forming a further cooled synthesis gas containing a decreased solids content; passing said cooled synthesis gas into contact with a body of cooling liquid in said quench chamber thereby forming a cooled product synthesis gas containing a decreased content of solid particles; then contacting said cooled product synthesis gas with a spray of aqueous scrubbing liquid in said quench chamber thereby forming a product synthesis gas substantially free of solids and a scrubber liquid effluent containing solid particles; separating at least a portion of said solid particles from at least a portion of said scrubber liquid effluent containing solid particles thereby forming a liquid containing less than about 0.1 w % of solid particles having a particle size larger than about 100 microns; and passing at least a portion of said liquid containing less than about 0.1 w % of solid particles having a particle size larger than about 100 microns as at least a portion of said cooling liquid to said contacting zone.
Claim 10
Independent Claim
328 words
The method of cooling from an initial high temperature of 1800°-3500° F. to a lower final temperature of about 400°-700° F., a hot synthesis gas containing solid particles including ash and char which comprises passing hot synthesis gas containing ash and char at initial hot temperature downwardly through a first contacting zone in a quench chamber; passing cooling liquid, containing less than about 0.1 w % of solid particles having a particle size larger than about 100 microns, into said first contacting zone; passing said hot synthesis gas through said first contacting zone in the presence of a falling film of cooling liquid passing downwardly on the walls of said contacting zone thereby forming a cooled synthesis gas; passing said cooled synthesis gas downwardly through a second contacting zone in said quench chamber in contact with a downwardly descending film on the walls of said second contacting zone; spraying cooling liquid into said downwardly descending cooled synthesis gas in said second contacting zone thereby forming a further cooled synthesis gas containing a decreased solids content; passing said cooled synthesis gas into contact with a body of cooling liquid in said quench chamber thereby forming a cooled product synthesis gas containing a decreased content of solid particles; then contacting said cooled product synthesis gas with a spray of aqueous scrubbing liquid in said quench chamber thereby forming a product synthesis gas substantially free of solids and a scrubber liquid effluent containing solid particles; separating at least a portion of said solid particles from at least a portion of said scrubber liquid effluent containing solid particles thereby forming a liquid containing less than about 0.1 w % of solid particles having a particle size larger than about 100 microns; and passing at least a portion of said liquid containing less than about 0.1 w % of solid particles having a particle size larger than about 100 microns as at least a portion of said cooling liquid to said contacting zone.
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) | 1987-10-02 | 1988-04-02 | 1988-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-02 | 1992-04-02 | 1992-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-02 | 1996-04-02 | 1996-10-02 | $7700.00 | Window Closed / Lapsed |