Patent US1182589A successfully refreshed from Google Patents.
US4065273A
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Process for breaking emulsions in a tar-containing aqueous condensate
Assignee: GEA Group AG
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Filing: 1976-03-04
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Granted: 1977-12-27
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Expires: 1996-03-04
Abstract
Abstract Gravity separation process for removing tar from water in a condensate formed by the cooling of a raw gas produced by the gasification or dry distillation of solid fuel such as coal. The tar and water condensate formed by cooling the raw gas to about 100° C is enriched in a tar-water separator with ammonium carbonate to a concentration of least 5 grams NH 3 per kg H 2 O. The cooling can be carried out in a plurality of stages with the hotter condensate from at least one of the first cooling stages being mixed at a weight ratio of 10:1 to 1:2 with colder condensate from at least one of the succeeding cooling stages.
Inventors
- 👤 Paul Rudolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:50
CPC Classifications
C; C10; C10C; C10C1/00; C10C1/02; B; B01; B01D; B01D17/00; B01D17/02; B01D17/04; B01D17/047
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
94 words
Separation process for removing tar from water in a condensate formed by the cooling of a raw gas produced by the gasification of coal with oxygen and water vapor under a pressure of 20-80 bars, which comprises treating said raw gas in a scrubbing and cooling zone and withdrawing said condensate, enriching said condensate with at least one member of the group consisting of ammonium carbonate and ammonium bicarbonate to a concentration of at least 5 grams NH 3 per kg H 2 O, and separating tar from said condensate in a separation zone.
Claim 2
Dependent Claim
94 words
Separation process for removing tar from water in a condensate formed by the cooling of a raw gas produced by the gasification of coal with oxygen and water vapor under a pressure of 20-80 bars, which comprises treating said raw gas in a scrubbing and cooling zone and withdrawing said condensate, enriching said condensate with at least one member of the group consisting of ammonium carbonate and ammonium bicarbonate to a concentration of at least 5 grams NH 3 per kg H 2 O, and separating tar from said condensate in a separation zone.
Claim 3
Dependent Claim
131 words
Separation process for removing tar from water in a condensate formed by the cooling of a raw gas produced by the gasification or dry distillation of solid fuels particularly coal which comprises cooling the raw gas in a plurality of stages, mixing the hotter condensate from at least one of the first cooling stages which is cooled to a temperature above 100° C at a weight ratio of 10:1 to 1:2 with colder condensate from at least one of the succeeding cooling stages, which cools to a temperature below 120° C, and feeding the resulting mixture containing at least one member of the group consisting of ammonium carbonate and ammonium bicarbonate with a concentration of at least 5 grams NH 3 per kg H 2 O to a tar-water separation zone.
Claim 4
Dependent Claim
131 words
Separation process for removing tar from water in a condensate formed by the cooling of a raw gas produced by the gasification or dry distillation of solid fuels particularly coal which comprises cooling the raw gas in a plurality of stages, mixing the hotter condensate from at least one of the first cooling stages which is cooled to a temperature above 100° C at a weight ratio of 10:1 to 1:2 with colder condensate from at least one of the succeeding cooling stages, which cools to a temperature below 120° C, and feeding the resulting mixture containing at least one member of the group consisting of ammonium carbonate and ammonium bicarbonate with a concentration of at least 5 grams NH 3 per kg H 2 O to a tar-water separation zone.
Claim 5
Dependent Claim
18 words
Process of claim 2 wherein condensate at a temperature of 60°-80° C is fed to the tar-water separator.
Claim 6
Dependent Claim
41 words
Process of claim 2 wherein the mixture of hotter and colder condensates is flashed from a pressure of at least 5 bars, the flashed-off vapors are condensed at least in part, and the resulting condensate is mixed with the flashed condensate.
Claim 7
Dependent Claim
18 words
Process of claim 1 wherein condensate at a temperature of 60°-80° C is fed to the tar-water separator.
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) | 1980-12-26 | 1981-06-27 | 1981-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-26 | 1985-06-27 | 1985-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-26 | 1989-06-27 | 1989-12-27 | $7700.00 | Window Closed / Lapsed |