US4478608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating process gases coming from a gasification reactor
Assignee: VEW Vereinigte Elektrizitatswerke Westfalen AG
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Filing: 1982-09-14
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Granted: 1984-10-23
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Expires: 2002-09-14
Abstract
Abstract A method of treating process gases coming from a gasification reactor before entry of such process gases into a system of waste heat utilization. The process gases are cooled off to a temperature of at least 800° C. before entry thereof into the waste heat system. Thereafter, the gases are extensively freed of solid matter in a cyclone separator system located ahead of the convective cooling system, and thereafter the gases are cooled off further to a temperature of at least 250° C. in a convective cooling system.
Inventors
- 👤 Rolf Dorling
- 👤 Ulrich Premel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:03
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/72; C10J3/86; C10K; C10K1/00; C10K1/02; C10K1/026; C10J2300/00; C10J2300/18; C10J2300/1861; C10J2300/1884; Y; Y02; Y02P; Y02P20/00; Y02P20/10; Y02P20/129
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
A method of treating process gases, coming from a gasification reactor, prior to entry of said gases into a system of waste heat utilization, said method occurring in a single pressure container and including the successive steps of: first cooling down said process gases to a temperature of at least 800° C. prior to entry thereof into said waste heat system; then extensively freeing said process gases of solid matter in a cyclone separator system; and finally further cooling down said process gases to a temperature of at least 250° C. in a convective cooling system, said first cooling down prior to entry of said process gases into said waste heat system occurring by means of indirect heat exchange; said further cooling down of said process gases in the convective cooling system occurring by means of wall cooling surfaces including in a lower region of a convective cooling zone with platen-type heat transfer surfaces and in an upper region with cylindrical heat transfer surfaces.
Claim 2
Independent Claim
164 words
A method of treating process gases, coming from a gasification reactor, prior to entry of said gases into a system of waste heat utilization, said method occurring in a single pressure container and including the successive steps of: first cooling down said process gases to a temperature of at least 800° C. prior to entry thereof into said waste heat system; then extensively freeing said process gases of solid matter in a cyclone separator system; and finally further cooling down said process gases to a temperature of at least 250° C. in a convective cooling system, said first cooling down prior to entry of said process gases into said waste heat system occurring by means of indirect heat exchange; said further cooling down of said process gases in the convective cooling system occurring by means of wall cooling surfaces including in a lower region of a convective cooling zone with platen-type heat transfer surfaces and in an upper region with cylindrical heat transfer surfaces.
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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) | 1987-10-23 | 1988-04-23 | 1988-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-23 | 1992-04-23 | 1992-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-23 | 1996-04-23 | 1996-10-23 | $7700.00 | Window Closed / Lapsed |