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| Number | Title | Issue Date |
| 7269972 | Plant and method for fractionating and purifying synthesis gas An plant unit for fractionating and purifying synthesis gas is described, which is comprised of a device for partially condensing synthesis gas and a device for nitrogen washing, whereat the device for nitrogen washing is adjacent to the device for partial condensat... | 09/18/2007 |
| 6568206 | Cryogenic hydrogen and carbon monoxide production with membrane permeate expander A process for recovering a first component and/or a second component from a multicomponent feed gas mixture containing the first component and the second component includes multiple steps. The first step is to pass the feed gas mixture through a membrane ... | 05/27/2003 |
| 6467306 | Process and apparatus for the separation of carbon monoxide and hydrogen from a gaseous mixture thereof A process and apparatus for separating carbon monoxide and hydrogen from a gaseous mixture thereof. The process comprises separating a cooled and partially condensed stream of feed gas comprising carbon monoxide and hydrogen into hydrogen-rich vapor and c... | 10/22/2002 |
| 6276172 | Process for producing ultrapure nitrogen For producing ultrapure nitrogen by low-temperature fractionation of air in a rectification system having at least one rectification column, compressed and purified feed air is conducted into a high pressure column, an oxygen-free pressurized nitrogen fra... | 08/21/2001 |
| 6269657 | Process and apparatus for separating mixtures of hydrogen and carbon monoxide Hydrogen and carbon monoxide are separated from a condensate-containing gaseous mixture thereof by using (a) a "first" stripping column (8) to remove the hydrogen content of the CO-loaded methane stream (6) obtained by washing CO from the gaseous mixture,... | 08/07/2001 |
| 6266976 | Cryogenic H2 and carbon monoxide production with an impure carbon monoxide expander A process for obtaining purified carbon monoxide from a gaseous mixture of hydrogen and carbon monoxide and one or more additional impurities to be removed by one or more vapor-liquid separation devices is provided which includes the steps of providing a ... | 07/31/2001 |
| 6178774 | Process and plant for the combined production of an ammonia synthesis mixture and carbon monoxide In the process of the invention, an ammonia synthesis mixture and carbon monoxide are produced. The hydrogen is purified in a nitrogen-washing column (61). The carbon monoxide is recovered cryogenically from a first liquid fraction (51) collected at the b... | 01/30/2001 |
| 6173585 | Process for the production of carbon monoxide An apparatus for the cryogenic separation of a mixture containing at least hydrogen, carbon monoxide and methane comprises two phase separators (A, H), two heat exchangers (D, K) and two stripping columns (B, I). The mixture cooled in the first exchanger ... | 01/16/2001 |
| 6161397 | Integrated cryogenic and non-cryogenic gas mixture separation Gas mixtures are separated by cryogenic separation, preferably a cryogenic condensation separation cycle, into at least a first gas mixture and a second gas mixture having at least one component common with the first gas mixture; at least one gas mixture ... | 12/19/2000 |
| 6098424 | Process and plant for production of carbon monoxide and hydrogen A process and plant for the combined production of carbon monoxide and an ammonia synthesis from a feed gas mixture containing essentially hydrogen, carbon monoxide and other constituents including methane. The process comprises subjecting the feed gas mi... | 08/08/2000 |
| 6094938 | Separation of carbon monoxide from gaseous mixtures containing carbon monoxide and hydrogen The separation energy requirement of a conventional cryogenic process for separating carbon monoxide ("CO") from a gaseous feed containing primarily CO and hydrogen is reduced by an improvement to the process. In the process, CO is scrubbed from a vapor p... | 08/01/2000 |
| 6082134 | Process and apparatus for separating a gaseous mixture Hydrogen (4), and carbon monoxide (21) are separated from a gaseous mixture thereof, typically a mixture of essentially hydrogen, carbon monoxide and methane (1) using liquid methane (3) to dissolve carbon monoxide in a methane wash column (2), removing (... | 07/04/2000 |
| 6073461 | Separation of carbon monoxide from nitrogen-contaminated gaseous mixtures also containing hydrogen and methane Carbon monoxide is separated from a gaseous mixture containing hydrogen and methane and contaminated with nitrogen by scrubbing carbon monoxide from a vapor portion of the feed by a liquid methane wash; stripping dissolved hydrogen from the resultant CO-l... | 06/13/2000 |
| 6070430 | Separation of carbon monoxide from nitrogen-contaminated gaseous mixtures also containing hydrogen Carbon monoxide is separated from a gaseous mixture containing hydrogen and carbon monoxide and contaminated with nitrogen by partially condensing the mixture to provide a hydrogen-enriched vapor feed fraction and a carbon monoxide-enriched liquid feed fr... | 06/06/2000 |
| 6062042 | Seperation of carbon monoxide from nitrogen-contaminated gaseous mixtures Carbon monoxide is separated from a gaseous mixture containing hydrogen and contaminated with nitrogen by separating hydrogen and carbon monoxide contents to provide a carbon monoxide-enriched nitrogen-containing stream and separating carbon monoxide and ... | 05/16/2000 |
| 5970742 | Distillation schemes for multicomponent separations The present invention teaches an efficient and easier to operate distillation embodiment to separate mixtures containing three or more components into streams enriched in one of the components. In this invention, from one end of an earlier distillation co... | 10/26/1999 |
| 5832747 | Cryogenic adjustment of hydrogen and carbon monoxide content of syngas The molar ratio of hydrogen and carbon monoxide in synthesis gas is changed by partially condensing at least a portion of the feed gas and separating the partially condensed feed mixture by non-fractionating phase separation. Preferably, the partially con... | 11/10/1998 |
| 5685172 | Process and device for the preparation of a flow which is substantially purified with respect to at least one of the impurities oxygen and carbon monoxide A process and apparatus for preparing a flow which is substantially purified with respect to at least one of the impurities O2 and CO, according to which: a) a flow to be purified, comprising at least 90 mol % of a compound chosen from nitrogen... | 11/11/1997 |
| 5632162 | Carbon monoxide production plant incorporating a cryogenic separation unit The plant comprises an adsorbent-filled tank (8) permanently interposed in the line (2), between the purification unit (3), operating by adsorption of solidifiable impurities from the gas mixture (5) containing carbon monoxide, and the cryogenic separatio... | 05/27/1997 |
| 5609040 | Process and plant for producing carbon monoxide Carbon monoxide is recovered by a cryogenic route from a gas mixture, for example from the tail gas of an operation for scrubbing with nitrogen in the preparation of an ammonia synthesis mixture, this mixture containing carbon monoxide, hydrogen and other... | 03/11/1997 |
| 5596883 | Light component stripping in plate-fin heat exchangers Light components are stripped from a multicomponent liquid feed mixture in a core type plate-fin heat exchanger by heating and partially vaporizing the mixture during downward flow in one of a plurality of multichannel flow passageways in the exchanger. T... | 01/28/1997 |
| 5592831 | Process for recovering a pure carbon monoxide fraction In the recovery of a pure CO fraction from a charge containing hydrogen, carbon monoxide and methane from which water and carbon dioxide have optionally been removed, the charge is cooled and partially condensed; and the carbon monoxide is scrubbed out wi... | 01/14/1997 |
| 5359857 | Installation for air liquefaction separation and process therefor An air liquefaction separation installation is provided with a rectification column which have a carbon monoxide rectification part connected to the upper part of the rectification column and at upper part of its rectification parts or a main condensation... | 11/01/1994 |
| 5351491 | Process for obtaining high-purity hydrogen and high-purity carbon monoxide An improvement in a process for the production of high-purity hydrogen and high-purity carbon monoxide by the separation of an extensively dry and CO2 -free H2 /CO crude gas mixture, also containing methane, by means of pressure swin... | 10/04/1994 |
| 5351492 | Distillation strategies for the production of carbon monoxide-free nitrogen The present invention relates an improvement to a cryogenic process for the separation of air which produces at least a nitrogen product and is carried out in a distillation column system having at least one distillation column from which the nitrogen pro... | 10/04/1994 |
| 5333463 | Production and installation for the production of gaseous nitrogen at several different purities A column for production of nitrogen by the distillation of air, adapted to produce high purity nitrogen at its head, is associated with an external source of medium purity liquid nitrogen that is fitted with a device for the liquid phase adsorption of car... | 08/02/1994 |
| 5295356 | Process and apparatus for the production of carbon monoxide and hydrogen 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.... | 03/22/1994 |
| 5133793 | Process and apparatus for the simultaneous production of methane and carbon monoxide The liquid in the vat portion of the hydrogen withdrawing column is sub-cooled, expanded and divided into three flows: a first flow which is sent directly at about its bulb temperature into the column for separating CO and CH4, a second flow wh... | 07/28/1992 |
| 4917716 | Process for purifying a gaseous mixture A process is disclosed for the purification of a gaseous mixture, for example, consisting essentially of hydrogen and containing impurities, e.g., carbon monoxide, methane and argon. The gaseous mixture is scrubbed with liquid nitrogen in a scrubbing colu... | 04/17/1990 |
| 4891950 | Control system and method for a synthesis gas process A synthetic gas generator receiving oxygen and natural gas through separate pipes provides synthetic gas. The methane content of the synthetic gas is sensed and a corresponding methane signal is provided. Carbon monoxide and fuel hydrogen are removed from... | 01/09/1990 |
| 4888035 | Process and apparatus for separation of a gaseous mixture The disclosure relates to a process as well as an apparatus for the separation of a gaseous mixture containing essentially hydrogen, methane and carbon monoxide, wherein the gaseous mixture is subjected to a physical low-temperature scrubbing step with li... | 12/19/1989 |
| 4732596 | Gas separation process Hydrogen and carbon monoxide are each separately recovered in high yield from a multicomponent gas stream containing these compounds together with carbon dioxide and a zero to minor amount of one or more gaseous components from the group consisting of nit... | 03/22/1988 |
| 4668488 | Process for the treatment of gases incurred in the manufacture of phosphorus Process for the treatment of CO-rich gases incurred in the manufacture of phosphorus, which gases contain impurities like water, and compounds of sulfur, nitrogen and phosphorus. The gas is passed through regenerators for the purpose of removing impuritie... | 05/26/1987 |
| 4636334 | Production of ammonia synthesis gas A process for removal of excess nitrogen and carbon oxides from a raw synthesis gas used to make ammonia. The raw synthesis gas is divided into two portions. The first portion is methanated to remove carbon oxides and then cooled to condense part of its n... | 01/13/1987 |
| 4623370 | Gas treatment process In a gas treatment process, a liquid tail product from a nitrogen wash column, which is typically incorporated into a process for the manufacture of ammonia from hydrocarbons, coal or other carbonaceous material, is separated in cryogenic distillation col... | 11/18/1986 |
| 4619679 | Gas processing A cryogenic hydrogen purification system is disclosed which produces low and high BTU substitute natural gas byproduct from a feed stream containing substantial carbon monoxide concentration. The required process cooling is provided by a pair of gas expan... | 10/28/1986 |
| 4608069 | Separation of higher boiling impurities from liquefied gases For separating a higher boiling component from a liquefied gas, e.g., CO, rectification is used wherein a partial stream of the liquefied gas is vaporized, superheated, and then fed into the lower portion of a rectification column. The remainder of the li... | 08/26/1986 |
| 4566886 | Process and apparatus for obtaining pure CO For obtaining pure CO from a gaseous mixture, consisting predominantly of hydrogen and carbon monoxide, e.g., that produced by the endothermic catalytic oxidation of hydrocarbons in the presence of CO2 as the oxygen-yielding agent the gaseous m... | 01/28/1986 |
| 4525187 | Dual dephlegmator process to separate and purify syngas mixtures The present invention involves a process for separating and purifying gas mixtures comprising H2, CO and C1 + hydrocarbons. The gas is initially cooled in a high pressure dephlegmator to condense and rectify the C1 + hydro... | 06/25/1985 |
| 4478621 | Process for the extraction of carbon monoxide from gas streams Processes for the separation of carbon monoxide from feed gas streams polluted with nitrogen are disclosed, in which the feed gas streams, which preferably include hydrogen and methane therein, are supplied to a distillation column, and including the step... | 10/23/1984 |
