| 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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| 01/15/1992 | EP0465929A1 Cryogenic air separation for producing elevated pressure product gas |
| 01/14/1992 | US5080703 Air separation |
| 01/14/1992 | US5079923 Process and apparatus for distillation of air to produce argon |
| 01/14/1992 | CA1294210C Process for purification of a gas stream by a nitrogen scrubbing |
| 01/14/1992 | CA1294209C Air separation |
| 01/11/1992 | CA2045060A1 Method for purifying an inert gas stream |
| 01/08/1992 | EP0465366A1 Process and installation for the simultaneous production of methane and carbon monoxide |
| 01/08/1992 | EP0465193A1 Integrated air separation fuel gasification combined cycle power generator |
| 01/08/1992 | EP0464636A1 Cryogenic air separation with dual temperature feed turboexpansion |
| 01/08/1992 | EP0464635A1 Cryogenic air separation with dual feed air side condensers |
| 01/08/1992 | EP0464630A1 Cryogenic air separation with dual product boiler |
| 01/07/1992 | US5078766 Equipment for air distillation to produce argon |
| 01/07/1992 | US5077978 Cryogenic process for the separation of air to produce moderate pressure nitrogen |
| 01/02/1992 | EP0463535A1 Hybrid prepurifier for cryogenic air separation plants |
| 01/02/1992 | EP0318564B1 Enhanced argon recovery from intermediate linboil |
| 01/02/1992 | EP0315645B1 Air distillation improvements for high purity oxygen |
| 12/31/1991 | US5076837 Using oxygen for partial oxidation reactions, nitrogen to perform work |
| 12/31/1991 | US5076823 Process for cryogenic air separation |
| 12/27/1991 | EP0462492A1 Improved feed processing for nitrogen rejection unit |
| 12/24/1991 | US5074898 Using primary column bottom liquid as stripping column downflo w liquid |
| 12/19/1991 | CA2044314A1 Hybrid membrane - cryogenic generation of argon concurrently with nitrogen |
| 12/18/1991 | EP0461804A1 Cryogenic process for the separation of air to produce moderate pressure nitrogen |
| 12/12/1991 | WO1991019142A1 Method of and device for producing nitrogen of high purity |
| 12/10/1991 | US5071458 Vaporization-condensation apparatus for air distillation double column, and air distillation equipment including such apparatus |
| 12/03/1991 | US5069699 Cryogenic separation of air |
| 12/03/1991 | US5069698 Separation from mixture with oxygen and krypton |
| 11/27/1991 | CN1056566A 空气分离 Air Separation |
| 11/26/1991 | US5067976 Cryogenic process for the production of an oxygen-free and methane-free, krypton/xenon product |
| 11/13/1991 | EP0456575A1 Process and apparatus for purifying, by adsorption, air to be distilled |
| 11/13/1991 | EP0456341A2 Vapor recovery system |
| 11/12/1991 | US5063746 Cryogenic process for the production of methane-free, krypton/xenon product |
| 11/05/1991 | US5062270 Method and apparatus to start-up controlled freezing zone process and purify the product stream |
| 10/30/1991 | EP0454531A1 Process and apparatus for the preparation of ultra-pure nitrogen |
| 10/30/1991 | EP0454327A1 Air separation |
| 10/22/1991 | US5058387 Process to ultrapurify liquid nitrogen imported as back-up for nitrogen generating plants |
| 10/22/1991 | CA1291023C Argon and nitrogen coproduction process |
| 10/21/1991 | CA2040745A1 Process and device for the production of ultra-pure nitrogen |
| 10/16/1991 | EP0452177A1 Process and installation for the production of gaseous nitrogen and system for its provision |
| 10/16/1991 | EP0350496B1 Process for recovering helium from a natural gas stream |
| 10/11/1991 | CA2039939A1 Process and facility for the production of gazeous nitrogen and nitrogen distribution system |
| 10/09/1991 | EP0450768A2 Nitrogen generation with dual reboiler/condensers in the low pressure column |
| 10/04/1991 | WO1991015725A1 Cryogenic air separation method for the production of oxygen and medium pressure nitrogen |
| 10/02/1991 | EP0419623A4 Cryogenic separation of gaseous mixtures |
| 10/01/1991 | US5053067 Distillation |
| 10/01/1991 | CA1289865C Gas separation process |
| 09/25/1991 | EP0447943A1 Process for cryogenic air separation |
| 09/24/1991 | US5051120 Separation of nitrogen and methane by cryogenic rectification |
| 09/24/1991 | CA1289455C Liquefied gases using an air recycle liquefier |
| 09/21/1991 | CA2038186A1 Process for cryogenic air separation |
| 09/18/1991 | EP0447112A1 Cryogenic air separation process for the production of nitrogen |
| 09/18/1991 | EP0446593A1 Production of oxygen-lean argon from air |
| 09/17/1991 | US5049174 Hybrid membrane - cryogenic generation of argon concurrently with nitrogen |
| 09/17/1991 | US5049173 Production of ultra-high purity oxygen from cryogenic air separation plants |
| 09/17/1991 | US5048597 Leak-safe hydrogen/air heat exchanger in an ACE system |
| 09/11/1991 | EP0446004A1 Production of ultra-high purity oxygen by cryogenic air separation |
| 09/11/1991 | CN1054402A Low temp. purification of gases |
| 09/10/1991 | CA2037503A1 Nitrogen generator with dual reboiler/condensers in the low pressure distillation column |
| 09/10/1991 | CA1288682C Process for lpg recovery |
| 09/04/1991 | EP0444422A1 Production of high purity argon |
| 09/03/1991 | CA1288329C Method for partial condensation of hydrocarbon gas mixtures |
| 08/22/1991 | WO1991012474A1 Process and installation for converting waste heat into useful energy |
| 08/21/1991 | EP0441783A1 Rectifier liquid generated intermediate reflux for subambient cascades. |
| 08/20/1991 | US5041149 Separation of nitrogen and methane with residue turboexpansion |
| 08/20/1991 | US5040370 Integrated air separation/metallurgical process |
| 08/13/1991 | US5039500 Process for producing xenon |
| 08/08/1991 | DE4003446A1 Producing cold and power from heat-pump - operated with binary fluids to utilise low-grade available heat |
| 08/06/1991 | US5037462 Process and device for production of nitrogen |
| 08/06/1991 | US5036672 Process and apparatus for air fractionation by rectification |
| 08/06/1991 | CA1287294C Water remover in compressed air systems |
| 08/03/1991 | CA2035052A1 Production of high purity argon |
| 07/31/1991 | EP0439126A1 Cryogenic air separation system with hybrid argon column |
| 07/30/1991 | US5035732 Cryogenic separation of gaseous mixtures |
| 07/30/1991 | US5035726 Process for removing oxygen from crude argon |
| 07/25/1991 | DE4001330A1 Heat exchanger for recovery of dry-cleaning solvents - uses liq. nitrogen vaporising to condense methyl chloride solvent |
| 07/24/1991 | EP0438282A1 Production of pure nitrogen from air |
| 07/24/1991 | EP0437768A1 Leak-safe hydrogen/air heat exchanger |
| 07/23/1991 | US5034043 Air separation with argon recovery |
| 07/23/1991 | US5033502 Apparatus for supplying a gas to a gas utilizing network |
| 07/20/1991 | CA2034597A1 Low temperature purification of gases |
| 07/17/1991 | EP0302888B1 Companded total condensation loxboil air distillation |
| 07/17/1991 | CN2081070U Device for recovering and reclaiming freon |
| 07/10/1991 | CN1052940A Method for obtaining raw argon |
| 07/09/1991 | US5030339 Reduced pressure stages |
| 06/26/1991 | EP0434510A1 Arrangement for mass distribution and heat and mass transfer for a column, especially with packings and column with such an arrangement |
| 06/25/1991 | US5026952 Cooling, partial condensatio in fractionating column |
| 06/25/1991 | US5026408 Methane recovery process for the separation of nitrogen and methane |
| 06/25/1991 | CA1285212C Process and apparatus to produce ultra high purity oxygen from a liquid feed |
| 06/25/1991 | CA1285211C Process and apparatus to produce ultra high purity oxygen from a gaseous feed |
| 06/25/1991 | CA1285210C Low pressure process for c + liquids recovery from process product gas |
| 06/25/1991 | CA1285209C Process for the production of argon |
| 06/25/1991 | CA1285208C Process for the recovery of argon |
| 06/19/1991 | CN1052365A Air separating method and apparatus |
| 06/12/1991 | EP0318504B1 Process for separating higher hydrocarbons from a gas mixture |
| 06/12/1991 | CN1052093A Process for preparing high-purity co2 |
| 06/06/1991 | DE4016897C1 Method of obtaining liq. oxygen in hypersonic flight - uses turbine which reduces pressure of entering air and cools it before liquefying and sepg. into oxygen and nitrogen |
| 06/05/1991 | EP0430803A1 Process and installation for air distillation with argon production |
| 05/29/1991 | CA2030771A1 Air distillating process and facility giving off argon gas |
| 05/28/1991 | US5019145 Argon purification |
| 05/28/1991 | US5019144 Cryogenic air separation system with hybrid argon column |
| 05/21/1991 | US5017204 Dephlegmator process for the recovery of helium |