| Patent application number | Description | Published |
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| 20130192228 | PROCESS AND DEVICE FOR AIR SEPARATION AND STEAM GENERATION IN A COMBINED SYSTEM - The disclosed process and apparatus provide for air separation and steam generation in a combined system that comprises a steam system ( | 08-01-2013 |
| 20130205831 | Method and device for obtaining compressed oxygen and compressed nitrogen by the low-temperature separation of air - The invention relates to a method and device for obtaining compressed oxygen and compressed nitrogen by the low-temperature separation of air in a distillation column system for nitrogen-oxygen separation, said distillation column system having at least one high-pressure column ( | 08-15-2013 |
| 20140033732 | METHOD AND DEVICE FOR GENERATING ELECTRICAL ENERGY - The method and the apparatus described are used for generating electrical energy in a combined system comprising a power plant and a low-temperature air separation unit. A feed air stream is compressed in a main air compressor, cooled, and introduced into a distillation column system having a high-pressure column and a low-pressure column. A first oxygen-enriched stream from the distillation column system is introduced into the power plant. In a first operating mode, cryogenic liquid from the distillation column system is introduced into a liquid tank and is stored there at least in part. In a second operating mode, stored cryogenic liquid is removed from the liquid tank and introduced into the distillation column system. A second process fluid from the distillation column system is heated and then actively depressurized in a hot expansion turbine. In addition, in the second operating mode, a nitrogen-enriched product stream from the high-pressure column is also heated to a high temperature and then depressurized in the hot expansion turbine. | 02-06-2014 |
| 20150316317 | METHOD AND DEVICE FOR LOW-TEMPERATURE AIR SEPARATION - A method and device for low-temperature separation of air in a distillation column system having a high-pressure column and a low-pressure column. The system includes a precolumn to which the first part of feed air is introduced and from which gaseous nitrogen product is removed and then heated in a heat exchanger. The precolumn includes a head condenser to which a liquefied portion of a second part of the cooled feed air is introduced. A gaseous fraction from the upper region of the precolumn is introduced to the system condenser and fluid formed in the system condenser is at least partially fed to the precolumn as return flow. | 11-05-2015 |
| Patent application number | Description | Published |
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| 20160003531 | METHOD AND DEVICE FOR GENERATING GASEOUS COMPRESSED NITROGEN - Method and device for generating gaseous compressed nitrogen by the low-temperature separation of air in a distillation column system, having a pre-column, a high-pressure column and a low-pressure column. The feed air is compressed, purified in a purification apparatus and cooled. A first sub-flow of the cooled feed air is introduced in a predominantly liquid state into the distillation column system. A gaseous fraction from the pre-column in introduced into the liquefaction chamber of a pre-column head condenser with liquid formed therein fed as reflux into the pre-column. A first gaseous nitrogen product fraction is drawn from the high-pressure column, heated, and obtained as first gaseous compressed nitrogen product. At least a part of the second sub-flow is introduced into the evaporation chamber of the pre-column head condenser. A third sub-flow of the cooled feed air is expanded to perform work and subsequently introduced into the liquefaction chamber. | 01-07-2016 |
| 20160003534 | METHOD AND APPARATUS FOR THE CRYOGENIC SEPARATION OF AIR - A method and the apparatus for the cryogenic separation of air in an air separation plant which has a main air compressor, a main heat exchanger and a distillation column system with a high-pressure column and a low-pressure column. All of the feed air is compressed in the main air compressor to a first air pressure which is at least 3 bar higher than the operating pressure of the high-pressure column. A first part of the compressed total air flow, as first air flow at the first air pressure, is cooled and liquefied or pseudo-liquefied in the main heat exchanger, then expanded and introduced into the distillation column system. A second part of the compressed total air flow, as second air flow, is post-compressed in an air post-compressor to a second air pressure and at least part is further compressed in a first turbine-driven post-compressor to a third air pressure. | 01-07-2016 |
| 20160003535 | METHOD AND APPARATUS FOR THE CRYOGENIC SEPARATION OF AIR - A method and apparatus serve for the cryogenic separation of air in an air separation plant which has a main air compressor, a main heat exchanger and a distillation column system with a high-pressure column and a low-pressure column. All of the feed air is compressed in the main air compressor to a first air pressure which is at least 3 bar higher than the operating pressure of the high-pressure column. A first part of the compressed total air flow, as first air flow at the first air pressure, is cooled and liquefied or pseudo-liquefied in the main heat exchanger, then expanded and introduced into the distillation column system. A second part of the compressed total air flow, as second air flow, is post-compressed in a turbine-driven post-compressor to a second air pressure. | 01-07-2016 |
| 20160003536 | METHOD AND DEVICE FOR PRODUCING GASEOUS COMPRESSED OXYGEN HAVING VARIABLE POWER CONSUMPTION - Variable production of compressed oxygen by means of low-temperature separation of air in a distillation column system having a high-pressure column and a low-pressure column. In a first operating mode, a first total air quantity is cooled in the main heat exchanger, and a first turbine amount is fed to the expansion to perform work. In a second operating mode, a second oxygen stream from an external source outside the distillation column system is introduced into the low-pressure column in a liquid state. There is less total air cooled in the main heat exchanger, and less air is fed to the expansion to perform work than in the first, operating mode. | 01-07-2016 |
