| Patents for F25J 3 - Processes or apparatus for separating the constituents of gaseous mixtures involving the use of liquefaction or solidification (11,467) |
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| 09/20/1990 | WO1990010837A1 Process for cryogenically separating natural gas streams |
| 09/19/1990 | EP0387872A2 Cryogenic rectification process for producing ultra high purity nitrogen |
| 09/18/1990 | US4957524 Air separation process with improved reboiler liquid cleaning circuit |
| 09/18/1990 | US4957523 High speed pressure swing adsorption liquid oxygen/liquid nitrogen generating plant |
| 09/18/1990 | CA1274168A1 Argon recovery from hydrogen depleted ammonia plant purge gas utilizing a combination of cryogenic and non-cryogenic separating means |
| 09/12/1990 | EP0387128A1 Process and apparatus for the recovery of the heaviest hydrocarbons from a gaseous mixture |
| 09/12/1990 | EP0386248A1 Condenser/evaporator |
| 09/11/1990 | CA1273865A1 Argon recovery from ammonia plant purge gas utilizing a combination of cryogenic and non-cryogenic separating means |
| 09/09/1990 | CA2011311A1 Process and installation for the recovery of a gazous mix heavier hydrocarbon |
| 09/05/1990 | CN1045173A Method and apparatus for separating air by means of rectification |
| 09/05/1990 | CN1045172A Process and method of seperating air by rectification |
| 08/29/1990 | EP0384688A2 Air separation |
| 08/29/1990 | EP0384483A2 Air rectification process and apparatus |
| 08/29/1990 | EP0384213A2 Air rectification process and apparatus |
| 08/29/1990 | EP0383994A2 Air rectification process and apparatus |
| 08/28/1990 | US4952305 Cooling, condensing and fractionating hydrocarbon stream; mixing higher hydrocarbons with residual gas used in scrubbing |
| 08/28/1990 | US4952223 Distillation, pressurization, recycling and purification of carbon dioxide stream |
| 08/22/1990 | CN1044850A Apparatus for producing highly pure nitrogen gas |
| 08/21/1990 | CA1272949A1 Process for the separation of c in2 xx hydrocarbons from natural gas |
| 08/21/1990 | CA1272948A1 Distillation process with high thermo-dynamic efficiencies |
| 08/14/1990 | US4948405 Modified dual distillation column with low and high pressure fractionators; enhanced oil recovery projects |
| 08/14/1990 | US4948404 Utilizing expanded methane-rich product gas stream as refrigerant to condense nitrogen; product purity |
| 08/14/1990 | US4947649 Air separation |
| 08/09/1990 | WO1990008932A1 High speed pressure swing adsorption liquid oxygen/liquid nitrogen generating plant |
| 08/08/1990 | EP0381319A1 Apparatus and method for separating air |
| 07/31/1990 | CA1272119A1 Hybrid membrane/cryogenic process for hydrogen purification |
| 07/25/1990 | EP0379435A1 Process and apparatus for the separation of air and the production of highly pure oxygen |
| 07/18/1990 | EP0377949A2 Process and apparatus for C2 recovery |
| 07/11/1990 | EP0377354A1 Cryogenic gas purification process and apparatus |
| 07/11/1990 | EP0377117A1 Air separation process and apparatus |
| 07/11/1990 | CN1043731A Hydrocarbon gas processing |
| 07/04/1990 | EP0376465A1 Process and Apparatus for Purifying Nitrogen |
| 07/04/1990 | EP0376464A1 Air separation |
| 07/03/1990 | CA1271124A1 Co.sub.2 addition to suppress h.sub.2s evolution in absorption-desorption process |
| 06/28/1990 | EP0350493A4 Companded total condensation reboil cryogenic air separation. |
| 06/26/1990 | US4936888 Separating variable concentrations of nitrogen from methane by distillation using high and low pressure fractionators; offshore enhanced oil recovery |
| 06/26/1990 | US4936887 Distillation plus membrane processing of gas streams |
| 06/26/1990 | US4936099 Refluxing at high and low pressure |
| 06/26/1990 | CA1270746A1 Cryogenic process for the selective removal of acidic gases from mixtures of gases by solvents |
| 06/20/1990 | CN1043196A Process and apparatus for air-seperating |
| 06/19/1990 | US4935044 Evaporating under hydrostatic pressure; compressing; treating with hydrogen and free of oxygen and removing water formed; rectification |
| 06/19/1990 | US4935043 Cryogenic process for desulphurization and gasoline removal of a gaseous mixture comprising methane containing H2 S and hydrocarbons having 2 carbon atoms and higher |
| 06/19/1990 | US4934148 Dry, high purity nitrogen production process and system |
| 06/19/1990 | US4934147 Cryogenic gas purification process and apparatus |
| 06/19/1990 | US4934146 Process for H2S and HC removal from natural gas |
| 06/12/1990 | US4932213 Method of treating natural gas to remove ethane and higher hydrocarbons |
| 06/12/1990 | US4932212 Process for the production of crude argon |
| 06/12/1990 | CA1270184A1 Process for separating methane and nitrogen |
| 06/12/1990 | CA1270183A1 Process for separating co.sub.2 from a gaseous mixture |
| 06/02/1990 | CA2004369A1 Air separation |
| 06/02/1990 | CA2004368A1 Air separation |
| 05/31/1990 | CA2003990A1 Pneumatic conveyor for grainy material and suction nozzle for use in such conveyor |
| 05/30/1990 | EP0370611A2 Ethane recovery system |
| 05/30/1990 | CN2057739U Condensed evaporator for large hollow separator |
| 05/29/1990 | US4929399 Structured column packing with liquid holdup |
| 05/29/1990 | CA2003906A1 Cryogenic gas purification process and apparatus |
| 05/22/1990 | US4927441 High pressure nitrogen production cryogenic process |
| 05/17/1990 | DE3838338A1 Process and apparatus for recovering CO by fractionation of an H2/CO raw gas mixture by means of multistage partial condensation |
| 05/15/1990 | CA1269039A1 Method and apparatus for purification of high n.sub.2 content gas |
| 05/09/1990 | EP0367428A1 Air separation |
| 05/08/1990 | US4923493 Method and apparatus for cryogenic separation of carbon dioxide and other acid gases from methane |
| 05/08/1990 | US4923492 Closed system refrigeration using a turboexpander |
| 05/01/1990 | US4921514 From high pressure natural gas or refinery feed gas |
| 04/18/1990 | EP0363861A2 Process for obtaining impure argon |
| 04/18/1990 | CN1007620B Reclaiming argon from hydrogen depletion blowing of sythesis ammonia device using separation process of hypothermia and non hypothermia |
| 04/18/1990 | CN1007619B Recovering argon from blowing air of ammonia converter by separating method of combining low temp. with non low temp. |
| 04/17/1990 | US4917716 Process for purifying a gaseous mixture |
| 04/17/1990 | US4916908 Air separation |
| 04/15/1990 | CA2000489A1 Air separation |
| 04/12/1990 | CA2000595A1 Process for the production of crude argon |
| 04/04/1990 | EP0361776A1 Liquid-vapour contact |
| 04/04/1990 | EP0361557A1 Process for treating natural gas containing hydrocarbons and hydrogen sulfide |
| 03/21/1990 | EP0359629A1 Process and apparatus for the simultaneous production of hydrogen and carbon monoxide |
| 03/21/1990 | CN1007244B Method of recovering propane and heavy hydrocarbon from hydrocarbon gas |
| 03/07/1990 | EP0357299A1 Air Separation |
| 03/07/1990 | EP0229803B1 Process and plant for the distillation of air |
| 02/22/1990 | DE3922723A1 Krypton and xenon sepn. - for methane based mixt. obtd. from ammonia synthesis residual gas using multi-stage rectification |
| 02/22/1990 | DE3922594A1 Krypton and xenon recovery from synthesis of residual gases - by catalytic hydrogenation of higher boiling hydrocarbon(s) to methane |
| 02/20/1990 | US4902321 Progressive condensation and revaporization; indirect heat exchange |
| 02/14/1990 | CN1039576A Process and apparatus for separating hydrocarbons |
| 02/13/1990 | US4900347 Cryogenic separation of gaseous mixtures |
| 02/07/1990 | CN1039409A Hydrocarbon gas processing |
| 02/07/1990 | CN1039408A Hydrocarbon gas processing |
| 01/31/1990 | EP0352870A1 Distillative separation employing bottom additives |
| 01/30/1990 | US4897098 Fractionation system for stabilizing natural gasoline |
| 01/23/1990 | US4895584 Ethane, ethylene, methane, cooling, condensation, distillation, heat exchanging, evaporation |
| 01/23/1990 | US4895583 Apparatus and method for separating air |
| 01/17/1990 | EP0350496A1 Process for recovering helium from a natural gas stream. |
| 01/17/1990 | EP0350493A1 Companded total condensation reboil cryogenic air separation. |
| 01/11/1990 | WO1990000243A1 Condenser/evaporator |
| 01/11/1990 | DE3822174A1 Process for the recovery of methane |
| 01/09/1990 | US4892564 Membrane process for hydrocarbon liquid recovery |
| 01/04/1990 | DE3822175A1 Process for removing nitrogen from nitrogen-containing natural gas |
| 01/03/1990 | CN1038514A Air separating technological processes for producing high-pressure oxygen and nitrogen |
| 01/02/1990 | US4891139 Method for wet oxidation treatment |
| 12/26/1989 | US4889545 Hydrocarbon gas processing |
| 12/19/1989 | US4888035 Process and apparatus for separation of a gaseous mixture |
| 12/13/1989 | EP0345354A1 Process for purifying nitrogen-fluoride |
| 12/13/1989 | CN1037961A Method for low temp. separation of air |
| 11/30/1989 | WO1989011626A1 Rectifier liquid generated intermediate reflux for subambient cascades |