US3590555A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for removal of hydrogen sulfide from hydrocarbon containing gases
Assignee: ThyssenKrupp Industrial Solutions AG
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Filing: 1968-12-02
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Granted: 1971-07-06
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Expires: 1988-12-02
Abstract
Abstract A method for removal of hydrogen sulfide from hydrocarbon containing gases by means of pressure washing with subsequent regeneration of the charged washing means which consists of ester of phosphonic acid or the derivatives of this ester. The charged washing means is intermediarily released from pressure and the intermediary expansion gas is conveyed back to the absorber after compression. The desorption heat expended in the regeneration is partially or entirely removed from the washing means and cooling thereof is utilized through a heat exchanger for cooling the fully regenerated washing means.
Inventors
- 👤 Rudolf Wackernagel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:34
CPC Classifications
C; C10; C10K; C10K1/00; C10K1/08; C10K1/16; C07; C07C; C07C7/00; C07C7/11
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
33 words
Method according to claim 1, characterized in that the charged washing means is intermediarily released from pressure and the intermediary expansion gas formed thereby is conveyed back into the absorber after its compression.
Claim 2
Dependent Claim
34 words
Method according to claim 1 wherein the washing means is heated to desorption temperature by indirect heat exchange successively with hot regenerated washing means leaving the desorption operation and with an external heating means.
Claim 3
Dependent Claim
15 words
Method according to claim 1 wherein the washing means is di-n-butyl ester of n-butylphosphonic acid.
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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |