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| Number | Title | Issue Date |
| 6598424 | Process and apparatus for separating a gas mixture with emergency operation The process and the apparatus serve for separating a gas mixture in a separation plant. A feed gas (18) is introduced into a compressor system (6, 16) and then into the separation plant. In the event of loss or partial loss of the compressor system (6, 16... | 07/29/2003 |
| 6568207 | Integrated process and installation for the separation of air fed by compressed air from several compressors In an integrated process an air separation unit A receives compressed air from the compressor S of a blast furnace B and the compressor K of a gas turbine C. Nitrogen enriched air N from the air separation unit is sent to the gas turbine and oxygen enrich... | 05/27/2003 |
| 6122932 | Combined installation of a furnace and an air distillation apparatus and process for using the same A method and apparatus for the combined operation of a furnace and an air distillation apparatus. The air distillation apparatus comprises at least one medium pressure column and a mixing column supplying oxygen to the furnace. The furnace and the distill... | 09/26/2000 |
| 6089040 | Combined plant of a furnace and an air distillation device and implementation process The combined plant comprises at least one furnace (F), at least one air distillation device containing at least one medium-pressure column (MP) and a mixing column (CM) which has an oxygen outlet line (O) for supply to the furnace (F), at least one blowin... | 07/18/2000 |
| 6079222 | Method for preparing deep-frozen liquid gas The object of the invention is to provide a method for preparing deep-frozen liquid gas for the purpose of recovering process energy for a downstream process, with which the refrigerating capacity of the deep-frozen liquid gas can also be used in the down... | 06/27/2000 |
| 6050105 | Apparatus and method for compressing a nitrogen product An air separation plant includes a product nitrogen compressor, a gas turbine and a steam turbine. The gas turbine and the steam turbine are operatively associated with the product nitrogen compressor so as to be able to drive the product nitrogen compres... | 04/18/2000 |
| 6026657 | Process and plant for supplying a blast furnace A blast furnace (1) is supplied with a flow of optionally oxygen-enriched air coming from an isothermal compressor (3) or a (radial) centrifugal compressor (11).... | 02/22/2000 |
| 5979183 | High availability gas turbine drive for an air separation unit Oxygen is produced by compressing air to provide a first and a second pressurized air stream, separating the first pressurized air stream into an oxygen-rich product stream and a nitrogen-rich byproduct stream, and combining the nitrogen-rich byproduct st... | 11/09/1999 |
| 5845517 | Process and device for air separation by low-temperature rectification An air stream is compressed and divided into a first partial stream (4) used as the feed air stream for a low-temperature air rectification system (16), and a second partial stream (5) used as an oxidation agent in a chemical reaction (6). The waste gas f... | 12/08/1998 |
| 5722259 | Combustion turbine and elevated pressure air separation system with argon recovery An integrated gasification combined cycle (IGCC) power generation system is operated with a cryogenic air separation system which produces oxygen used in a gasification system to produce fuel gas for the IGCC combustion turbine and pressurized nitrogen wh... | 03/03/1998 |
| 5678426 | Separation of fluid mixtures in multiple distillation columns A fluid mixture is separated by distillation in a two column system in which a portion of the feed is prefractionated in a first column having at least one separation stage above the feed and the prefractionator bottoms provides feed to a second column op... | 10/21/1997 |
| 5666823 | High pressure combustion turbine and air separation system integration A high pressure combustion turbine is integrated with a double column cryogenic air separation system by cooling and purifying a portion of the compressed air from the combustion turbine compressor, work expanding a first portion of the resulting cooled a... | 09/16/1997 |
| 5582036 | Cryogenic air separation blast furnace system A system which integrates a cryogenic air separation plant with a blast furnace system enabling efficient oxygen enrichment of the blast air, and, if desired, production of additional higher purity oxygen.... | 12/10/1996 |
| 5513497 | Separation of fluid mixtures in multiple distillation columns A fluid mixture is separated by distillation in a two column system in which the feed is prefractionated in a first column having at least one separation stage above the feed and the prefractionator bottoms provides feed to a second column operating at a ... | 05/07/1996 |
| 5505052 | Process and unit for supplying a gas under pressure to an installation that consumes a constituent of air Air is distilled in a distillation apparatus (13) associated with a heat exchange line (11) in which is circulated a heat transfer fluid under high pressure. A storage (20, 23)is supplied, at least intermittently, with gas in liquid phase; and gas in liqu... | 04/09/1996 |
| 5501078 | System and method for operating an integrated gas turbine and cryogenic air separation plant under turndown conditions A gas turbine/air separation apparatus operates at both a design point and a turndown point and includes a gas turbine for providing pressurized air and an air separation plant which receives the pressurized air. The air separation plant produces an oxyge... | 03/26/1996 |
| 5459994 | Gas turbine-air separation plant combination A system and method of operating a system comprising an air separation plant and a gas turbine engine, the method comprising: providing a nitrogen-rich stream from the air separation plant; expanding and thereby cooling the nitrogen-rich stream; and deliv... | 10/24/1995 |
| 5437160 | Process and installation for the separation of air A process and installation for the separation of air in a cryogenic distillation apparatus (24) comprising a distillation column (30, 42) and in which the supplied air is separated to produce a fraction rich in oxygen and a fraction rich in nitrogen as pr... | 08/01/1995 |
| 5317862 | Air separation In a process integration, particularly with a blast furnace, nitrogen under pressure is moisturized by the addition to it of hot, pressurized water. The moisturized nitrogen is expanded and power thereby generated. The nitrogen is not mixed with combustio... | 06/07/1994 |
| 5291737 | Process or apparatus for distilling air and application in feeding gas to a steel mill The apparatus is of the type having a double column and a mixing column. The latter is fed at the bottom portion with auxiliary air that is compressed at a pressure different from that of the mean pressure column, and at the top by means of a liquid withd... | 03/08/1994 |
| 5257504 | Multiple reboiler, double column, elevated pressure air separation cycles and their integration with gas turbines The present invention is a liquid nitrogen reflux means improvement capable of allowing the operation of conventional dual and triple reboiler air separation cycles at elevated pressures. The improvement comprises: (a) heat exchanging a portion of the liq... | 11/02/1993 |
| 5251450 | Efficient single column air separation cycle and its integration with gas turbines The present invention is an improvement to a process for the cryogenic distillation of air to produce both nitrogen and oxygen products carried out in a single distillation column system wherein a feed air stream is distilled thereby producing a nitrogen ... | 10/12/1993 |
| 5251451 | Multiple reboiler, double column, air boosted, elevated pressure air separation cycle and its integration with gas turbines The present invention is a liquid nitrogen reflux means improvement capable of allowing the operation of conventional dual and triple reboiler air separation cycles at elevated pressures. The improvement comprises: (a) further compressing and cooling anot... | 10/12/1993 |
| 5231837 | Cryogenic distillation process for the production of oxygen and nitrogen A cryogenic distillation process for the production of oxygen and nitrogen is provided, which entails: a) providing a feed stream of clean, dry and compressed air, b) cooling at least a fraction of the compressed air and introducing the same into a high pressu... | 08/03/1993 |
| 5139548 | Gas liquefaction process control system A method for controlling the operation of a liquefied natural gas (LNG) process which utilizes gas turbine-driven refrigeration compressors is disclosed. A feedforward control system compensates for the effects of changes in ambient air temperature on the... | 08/18/1992 |
| 5081845 | Integrated air separation plant - integrated gasification combined cycle power generator An integrated cryogenic air separation unit power cycle system is disclosed wherein the air separation unit (ASU) is operated at elevated pressure to produce moderate pressure nitrogen. The integrated cycle combines a gasification section wherein a carbon... | 01/21/1992 |
| 5080703 | Air separation Compressed air is purified in apparatus 4 and passed through heat exchanger 6 in which it is reduced in temperature ready for rectification in a double column comprising a higher pressure rectification column 10 and a lower pressure rectification column 1... | 01/14/1992 |
| 4962646 | Air separation A method and apparatus for cryogenic air separation wherein both fuel gas and electrical power are produced. Respective operating pressures of the lower and higher pressure rectification columns can be set independently of one another, allowing flexibilit... | 10/16/1990 |
| 4806136 | Air separation method with integrated gas turbine An air separation method employing compression powered by a gas turbine and employing four heat regenerable adsorbent purifiers wherein two purifiers are used to purify feed air while a third purifier is being regenerated by hot regeneration gas and a fou... | 02/21/1989 |
| 4785621 | Air bottoming cycle for coal gasification plant In a coal gasification plant there is a requirement for supplying oxygen to the coal gasifier in order to produce coal gas fuel. An oxygen plant will produce oxygen and nitrogen from an input supply of compressed air. In the presence of a fired gas turbin... | 11/22/1988 |
| 4655809 | Air separation process with single distillation column with segregated heat pump cycle The present invention is directed to an air separation system for the recovery of pressurized, substantially pure oxygen gas. The system uses a single pressure distillation column and utilizes the nitrogen product stream to provide power for feed air comp... | 04/07/1987 |
| 4533374 | Method for reducing air pollution Method for reducing air pollution in connection with a cryogenic facility to produce nitrogen which facility uses natural gas as fuel for the engines that drive the compressors. Oxygen is a by-product of the cryogenic facility and is usually vented. The b... | 08/06/1985 |
| 4421536 | Process for producing krypton and xenon A process for producing krypton and xenon. The concentrations of krypton and xenon contained in liquid oxygen are not highly increased in a concentrating column to produce concentrated liquid having a relatively low concentration of methane, which is stri... | 12/20/1983 |
| 4382366 | Air separation process with single distillation column for combined gas turbine system The present invention is directed to an air separation system for the recovery of pressurized, substantially pure oxygen gas. The system uses a single pressure distillation column and burns a nitrogen-oxygen waste stream to provide power for the air compr... | 05/10/1983 |
| 4270938 | Processes for decontaminating nuclear process off-gas streams In a process for decontaminating a nuclear process off-gas stream, oxygen and oxides of nitrogen are removed by catalytic reaction with hydrogen. The feed gas stream is then passed serially through a drier, a carbon dioxide adsorber and a xenon adsorber t... | 06/02/1981 |
| 4224045 | Cryogenic system for producing low-purity oxygen Low-purity oxygen is produced by fractional distillation of liquefied air. A gas turbine, powered in part by waste nitrogen from the distillation, supplies energy to compress the feed air. Compressing the waste nitrogen prior to turbine expansion provides... | 09/23/1980 |
| 3950957 | Thermodynamic interlinkage of an air separation plant with a steam generator An air separation plant operates at elevated pressures and with reflux to produce an oxygen product and a nitrogen product which is indirectly heat exchanged with the compressed main air feed therefor to produce a hot nitrogen product. The air separation ... | 04/20/1976 |
