Patent US1877926A successfully refreshed from Google Patents.
Patent US5295356A successfully refreshed from Google Patents.
US5295356A
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Process and apparatus for the production of carbon monoxide and hydrogen
Assignee: LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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Filing: 1992-09-08
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Granted: 1994-03-22
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Expires: 2012-09-08
Abstract
Abstract The heating and/or the cooling of the three columns is ensured by a closed nitrogen cycle. Carbon monoxide is withdrawn in liquid form from the third column, then is brought through a pump at the pressure of utilization and is warmed under this pressure.
Inventors
- 👤 Jean Billy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:54
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/0228; F25J3/0233; C; C01; C01B; C01B3/00; C01B3/50; C01B3/506; C07; C07C; C07C7/00; C07C7/04; F25J3/0204; F25J3/0223; F25J3/0252; F25J3/0261; C01B2203/00; C01B2203/04; C01B2203/0465; C01B2203/047; C01B2203/048; F25J2200/00; F25J2200/40; F25J2200/70; F25J2200/72; F25J2205/00; F25J2205/30; F25J2235/00; F25J2235/02; F25J2270/00; F25J2270/12; F25J2270/14; F25J2270/42; F25J2270/60; Y; Y10; Y10S; Y10S62/00; Y10S62/92; Y10S62/931
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
134 words
Process for the production of carbon monoxide and hydrogen from a gaseous mixture comprising these two substances and methane comprising the steps of: washing an initial gaseous mixture of carbon monoxide and hydrogen with liquid methane in a first column to obtain gaseous hydrogen and a washing liquid; separating hydrogen dissolved in the washing liquid in a second column to obtain a remaining liquid comprising carbon monoxide and methane; separating the remaining liquid by distillation in a third column to withdraw carbon monoxide in liquid form for production at a top section of said third column; pressurizing the liquid carbon monoxide to a predetermined pressure of utilization by pumping means; heating the liquid carbon monoxide under said utilization pressure; and heating and/or cooling each of said columns by means of a closed refrigerating cycle.
Claim 2
Dependent Claim
134 words
Process for the production of carbon monoxide and hydrogen from a gaseous mixture comprising these two substances and methane comprising the steps of: washing an initial gaseous mixture of carbon monoxide and hydrogen with liquid methane in a first column to obtain gaseous hydrogen and a washing liquid; separating hydrogen dissolved in the washing liquid in a second column to obtain a remaining liquid comprising carbon monoxide and methane; separating the remaining liquid by distillation in a third column to withdraw carbon monoxide in liquid form for production at a top section of said third column; pressurizing the liquid carbon monoxide to a predetermined pressure of utilization by pumping means; heating the liquid carbon monoxide under said utilization pressure; and heating and/or cooling each of said columns by means of a closed refrigerating cycle.
Claim 3
Dependent Claim
15 words
The process according to claim 1, wherein the closed refrigerating cycle is a nitrogen cycle.
Claim 4
Dependent Claim
195 words
Apparatus for the production of carbon monoxide and hydrogen from a gaseous mixture comprising these two substances and methane comprising: a first column having at its bottom a first inlet for receiving the gaseous mixture comprising carbon monoxide and hydrogen and at its top a second inlet for receiving liquid methane; a second column receiving at its top a liquid comprised of carbon monoxide, methane and hydrogen from said first column and having at its bottom a vaporizer to separate hydrogen from the carbon monoxide and methane; a third column having at an intermediate point thereof an inlet for receiving a liquid mixture comprising carbon monoxide and methane from the bottom of said second column and having at its bottom a vaporizer for heating the liquid mixture and at its top means for providing reflux and means for withdrawing liquid carbon monoxide including pumping means for pressurizing the liquid carbon monoxide to a desired pressure of utilization; means for heating the liquid carbon monoxide delivered by said pumping means to provide a gaseous product; and a refrigeration cycle providing for heating and/or cooling of said columns with said refrigeration cycle operating in a closed cycle.
Claim 5
Dependent Claim
195 words
Apparatus for the production of carbon monoxide and hydrogen from a gaseous mixture comprising these two substances and methane comprising: a first column having at its bottom a first inlet for receiving the gaseous mixture comprising carbon monoxide and hydrogen and at its top a second inlet for receiving liquid methane; a second column receiving at its top a liquid comprised of carbon monoxide, methane and hydrogen from said first column and having at its bottom a vaporizer to separate hydrogen from the carbon monoxide and methane; a third column having at an intermediate point thereof an inlet for receiving a liquid mixture comprising carbon monoxide and methane from the bottom of said second column and having at its bottom a vaporizer for heating the liquid mixture and at its top means for providing reflux and means for withdrawing liquid carbon monoxide including pumping means for pressurizing the liquid carbon monoxide to a desired pressure of utilization; means for heating the liquid carbon monoxide delivered by said pumping means to provide a gaseous product; and a refrigeration cycle providing for heating and/or cooling of said columns with said refrigeration cycle operating in a closed cycle.
Claim 6
Dependent Claim
14 words
The apparatus according to claim 3 wherein the refrigeration cycle is a nitrogen cycle.
References Cited (Backward Citations)
DE621453C
Cited
US3872025A
Cited
FR2353819A1
Cited
US4217759A
Cited
EP0317851A2
Cited
US4888035A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-03-21 | 1997-09-20 | 1998-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-03-21 | 2001-09-20 | 2002-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-03-21 | 2005-09-20 | 2006-03-22 | $7700.00 | Window Closed / Lapsed |