US3872025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production and utilization of synthesis gas
Assignee: Bethlehem Steel Corp
•
Filing: 1972-05-15
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Granted: 1975-03-18
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Expires: 1992-05-15
Abstract
Abstract In a method for producing high pressure synthesis gas from an industrial gas containing carbon monoxide, carbon dioxide is first removed from the gas stream and the stream is partially liquefied in a cryogenic recovery plant. Hydrogen and at least part of the nitrogen are separated from the liquefied gas by distillation, and the remaining liquid carbon monoxide is liquid pumped to from 500 to about 10,000 psia. Following pressurization, the liquid carbon monoxide is heated to above its boiling point, while controlling the pressure to produce a vaporized high pressure gaseous feed, also at from about 50010,000 psia. Thereafter, the high pressure vaporized carbon monoxide is reacted with steam at high pressure in a conventional carbon monoxide shift reaction. The resulting high pressure hydrogen can be utilized in a process for the synthesis of methanol, ammonia, and the like.
Inventors
- 👤 Alan H Singleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:42
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/0228; F25J3/0261; C; C01; C01B; C01B3/00; C01B3/02; C01B3/025; C01B3/06; C01B3/12; C01B3/16; C07; C07C; C07C29/00; C07C29/15; C07C29/151; C07C29/1516; C07C29/1518; F25J3/0204; F25J3/0219; F25J2200/00; F25J2200/04; F25J2210/00; F25J2210/14; F25J2230/00; F25J2230/30; F25J2235/00; F25J2235/02; Y; Y02; Y02C; Y02C20/00; Y02C20/40; Y02P; Y02P20/00; Y02P20/151; Y10; Y10S; Y10S62/00; Y10S62/92
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
164 words
AN IMPROVED METHOD OF MAKING PREPRESSURIZED SYNTHESIS GAS CONTAINING HYDROGEN FROM A LOW GRADE CARBON MONOXIDE CONTAINING INDUSTRIAL GAS, AFTER AN INITIAL REMOVAL OF CARBON DIOXIDE, COMPRISING: A. CRYOGENICALLY PROCESSING THE CARBON DIOXIDE FREE INDUSTIAL GAS TO FORM LIQUID CARBON MONOXIDE AND CRYOGENICALLY SEPARATING THE CARBON MONOXIDE FROM THE INDUSTRIAL GAS AS A LIQUID, B. PUMPING THE CARBON MONOXIDE AS A LIQUID TO RAISE THE PRESSURE OF THE LIQUID TO FROM ABOUT 500 TO 10,000 PSIA., C. HEATING THE PRESSURIZED LIQUID CARBON MONOXIDE TO ABOVE ITS BOILING POINT WHILE MAINTAINING THE PRESSURE TO PRODUCE WITHOUT PHASE CHANGE A GASEOUS FEED AT BETWEEN 500 AND 10,000 PSIA., D. PASSING THE PRESSURIZED FEED GAS TO A HIGH PRESSURE CATALYSTIC WATER GAS SHIFT REACTOR AND REACTING SAID GAS AT SUBSTANTIALLY THE PRESSURE OBTAINED IN STEP (B) WITH STEAM OF SUBSTANTIALLY THE SAME PRESSURE AND AT A TEMPERATURE OF FROM ABOUT 600* TO ABOUT 900*F. TO FORM PREPRESSURIZED SYNTHESIS GAS CONTAINING HYDROGEN AND CARBON MONOXIDE AND CARBON DIOXIDE.
Claim 2
Dependent Claim
164 words
AN IMPROVED METHOD OF MAKING PREPRESSURIZED SYNTHESIS GAS CONTAINING HYDROGEN FROM A LOW GRADE CARBON MONOXIDE CONTAINING INDUSTRIAL GAS, AFTER AN INITIAL REMOVAL OF CARBON DIOXIDE, COMPRISING: A. CRYOGENICALLY PROCESSING THE CARBON DIOXIDE FREE INDUSTIAL GAS TO FORM LIQUID CARBON MONOXIDE AND CRYOGENICALLY SEPARATING THE CARBON MONOXIDE FROM THE INDUSTRIAL GAS AS A LIQUID, B. PUMPING THE CARBON MONOXIDE AS A LIQUID TO RAISE THE PRESSURE OF THE LIQUID TO FROM ABOUT 500 TO 10,000 PSIA., C. HEATING THE PRESSURIZED LIQUID CARBON MONOXIDE TO ABOVE ITS BOILING POINT WHILE MAINTAINING THE PRESSURE TO PRODUCE WITHOUT PHASE CHANGE A GASEOUS FEED AT BETWEEN 500 AND 10,000 PSIA., D. PASSING THE PRESSURIZED FEED GAS TO A HIGH PRESSURE CATALYSTIC WATER GAS SHIFT REACTOR AND REACTING SAID GAS AT SUBSTANTIALLY THE PRESSURE OBTAINED IN STEP (B) WITH STEAM OF SUBSTANTIALLY THE SAME PRESSURE AND AT A TEMPERATURE OF FROM ABOUT 600* TO ABOUT 900*F. TO FORM PREPRESSURIZED SYNTHESIS GAS CONTAINING HYDROGEN AND CARBON MONOXIDE AND CARBON DIOXIDE.
Claim 3
Dependent Claim
14 words
The method of claim 1 in which the industrial gas is blast furnace gas.
Claim 4
Dependent Claim
18 words
The method of claim 1 in which the pressure of step (b) and (c) is about 5000 psia.
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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) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |