Linde Aktiengesellschaft

Linde Gmbh

Mitsubishi Hitachi Power Systems, Ltd.

Linde Kryotechnik Ag

Alexander Alekseev

Dimitri Goloubev

Ramachandran Krish Krishnamurthy

Stevan Jovanovic

Christian Bergins

Lutz Decker

Christoph Stiller

Dirk Schwenk

Sebastian Rehfeldt

Georg Demski

Thomas Rathbone

Ayhan Yayli

Brian Stöver

Frances Masterson

Guillermo Locht

Andreas Rupieper

Wim Van Dorth

Rudolf Berghoff

The invention relates to a method for cooling a superconducting cable () using a coolant containing or consisting of liquid nitrogen, wherein at least a part of the coolant is subjected to a subcooling step and thereafter brought into thermal contact with the superconducting cable () in a cooling cycle, wherein said subcooling step is at least in part performed using a refrigerant provided in a Brayton process in which at least a part of the refrigerant is cooled and heated in a main heat exchanger (). According to the present invention, a part of the coolant is withdrawn from the cooling cycle and heated in the same main heat exchanger () in which at least a part of the refrigerant is cooled and heated in the Brayton process. A corresponding device and a corresponding system are also part of the present invention.

Method and device for cooling of a superconducting cable and corresponding system

Method and Apparatus for separating at least one CO isotope compound, especially isotope compound 13C16O, from natural CO, comprising:

Method and apparatus for separation of 13C16O from natural CO

A method is provided for producing carbon dioxide by combusting a carbonaceous fuel with oxygen or with a gas mixture containing more than 25 mol % of oxygen obtaining a flue gas mixture, wherein the flue gas mixture is processed obtaining a secondary gas mixture containing carbon dioxide and oxygen, and wherein a part of the oxygen contained in the secondary gas mixture is catalytically reacted with a first auxiliary fuel in a reactor system comprising a series of multiple reactors, obtaining further carbon dioxide and water. A further part of the oxygen contained in the secondary gas mixture is catalytically reacted with a second auxiliary fuel in the reactor system. A corresponding apparatus is also described herein.

Method and apparatus for producing carbon dioxide

A method and apparatus for cooling a load using liquid nitrogen conveyed in a circuit are provided. Cooled liquid nitrogen is used for cooling the liquid nitrogen conveyed in the circuit. A first proportion of the liquid nitrogen is cooled in an open cooling system and a second proportion is cooled in a closed cooling system using one or more cooling units. The open cooling system and closed cooling system are used for cooling of a power supply having a first end and a second end. The open cooling system is arranged at the first end and the closed cooling system is arranged at the second end. Cooling power is provided in a first time period as a first, smaller amount of total cooling power and in a second time period as a second, higher amount of total cooling power. A first proportion of the amount of total cooling power is provided by means of the open cooling system and a second proportion is provided by means of the closed cooling system. The first proportion in the first time period is set to a lower value than in the second time period.

Method and apparatus for cooling a load and system comprising corresponding apparatus and load

Integration of an oxyfuel combustion boiler at elevated pressures and a heat exchanger is achieved to produce carbon dioxide by feeding flue gas comprising carbon dioxide and water from the oxyfuel combustion boiler to a direct contact cooler column wherein water is condensed at a temperature of 0 to 10&#xb0; C. lower than its dew point; feeding a portion of the condensed water from the direct contact cooler column to the oxyfuel combustion boiler; feeding a portion of the carbon dioxide from the direct contact cooler column to the oxyfuel combustion boiler; and recovering a portion of the carbon dioxide from the direct contact cooler column.

Oxy-fuel combustion and power generation system

The method and the device arc used for the cryogenic decomposition of air in a distillation column system for separating nitrogen and oxygen, said system having a first high-pressure column (), a low-pressure column (), and three condenser-evaporators, namely a high-pressure column head condenser (), a low-pressure column bottom evaporator (), and an auxiliary condenser ().

Method and device for the cryogenic decomposition of air

The invention relates to a method and device for generating two purified partial air streams under different pressures. A total air stream () is compressed to a first total air pressure. The compressed total air stream () is cooled with cooling water under the first total air pressure by way of heat exchange (). The heat exchange with cooling water for cooling the total air stream () is carried out as a direct heat exchange in a first direct contact cooler (), at least in part. The cooled total air stream () is divided into a first partial air stream () and a second partial air stream (). The first partial air stream () is purified in a first purification device () under the first total air pressure, generating the first purified partial air stream (). The second partial air stream () is re-compressed to a higher pressure (), which is higher than the first total air pressure. The re-compressed second partial air stream () is cooled with cooling water in a second direct contact cooler () by way of direct heat exchange (). The cooled second partial air stream () is purified under the higher pressure in a second purification device (), thus generating the second purified partial air stream ().

Method and device for generating two purified partial air streams

A method for producing electrical energy in a combined energy generation plant which comprises an air treatment unit and a power station unit is proposed. In a first operating mode, air is liquefied to form an air liquefaction product and, in a second operating mode, an air liquefaction product is converted into a gaseous or supercritical state, in which said product is introduced into the power station unit and is used for producing electrical energy. In a third operating mode, air is condensed in the air treatment unit and used in the power station unit directly for producing electrical energy. It is envisaged that, in the first operating mode, the air is cooled to several temperature levels by two liquid coolants and the air liquefaction product is correspondingly heated. In addition, in the first operating mode, the air is condensed stepwise over several pressure levels.

Method for generating electrical energy and energy generation plant

The invention relates to a method and a device for generating electrical energy in a combined system consisting of a power plant and an air handling system. The power plant comprises a first gas expansion unit connected to a generator. The air handling system comprises an air compression unit, a heat exchange system, and a fluid tank. In a first operating mode, feed air is compressed in the air compression unit and cooled in the heat exchange system. A storage fluid is generated from the compressed and cooled feed air and is stored as cryogenic fluid in fluid tank. In a second operating mode, cryogenic fluid is removed from fluid tank and is vaporized, or pseudo-vaporized, at superatmospheric pressure. The gaseous high pressure storage fluid generated is expanded in the gas expansion unit. Gaseous natural gas is introduced into the heat exchange system () to be liquefied.

Method and device for generating electrical energy

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 () and one low-pressure column (), wherein the low-pressure column () is in a heat-exchanging connection with the high-pressure column () by means of a main condenser () designed as a condenser-evaporator. Feed air is compressed in an air compressor (). The compressed feed air () is cooled down in a main heat exchanger () and at least partially introduced into the high-pressure column (). An oxygen-enriched liquid () is removed from the high-pressure column () and fed to the low-pressure column () at a first intermediate position (). A nitrogen-enriched liquid () is removed from the high-pressure column () and/or the main condenser () and fed to the head of the low-pressure column (). A liquid oxygen flow () is removed from the distillation column system for nitrogen-oxygen separation, brought to an elevated pressure in the liquid state (), introduced into the main heat exchanger () at said elevated pressure, evaporated or pseudo-evaporated and heated to approximately ambient temperature in the main heat exchanger (), and finally obtained as a gaseous compressed oxygen product (). A high-pressure process flow () is brought into indirect heat exchange with the oxygen flow in the main heat exchanger () and then depressurized (), wherein the depressurized high-pressure flow () is introduced at least partially in the liquid state into the distillation column system for nitrogen-oxygen separation. A gaseous circuit nitrogen flow () is drawn from the high-pressure column and at least partially () compressed in a circuit compressor (). A first sub-flow () of the circuit nitrogen flow is removed from the circuit compressor (), cooled down in the main heat exchanger (), at least partially condensed in the bottom evaporator () of the high-pressure column () in indirect heat exchange with the bottom liquid of the high-pressure column (), and conducted back into the distillation column system for nitrogen-oxygen separation. A second sub-flow of the circuit nitrogen flow is branched off upstream and/or downstream of the circuit compressor and/or from an intermediate stage of the circuit compressor at a product pressure (P, P, P, P, P) and obtained as a compressed nitrogen product (). The circuit compressor () is designed as a hot compressor and is driven by means of external energy.

Method and device for obtaining compressed oxygen and compressed nitrogen by the low-temperature separation of air

A method and device for generating electrical energy in a combined system of power plant, cold storage system and air compression system. The air compression system has a primary air compressor for generating a primary compressed air flow at a first pressure level. The power plant has a combustion unit which operates at a second pressure level and generates a combustion gas from which electrical energy is generated. The cold storage system has means for generating cold from compressed air, means for storing cold thus produced and means for generating a compressed air flow at the second pressure level using the stored cold. In a first operating mode (charging mode), a first compressed air flow is introduced from the air compression system into the cold storage system to charge the cold reservoir. In a second operating mode (discharging mode), the first compressed air flow generated in the primary air compressor, is introduced into the cold storage system to discharge the cold reservoir and to generate a third compressed air flow at the second pressure level, which is introduced into the combustion unit. The air compression system has a first booster for boosting compressed air compressed in the primary air compressor to the second pressure level. In a third operating mode (normal mode), the entire primary compressed air flow generated in the primary air compressor is boosted in the first booster to the second compressed air level and introduced into the combustion unit.

The disclosed process and apparatus provide for air separation and steam generation in a combined system that comprises a steam system () and an air separation plant (), wherein a feed air stream () is introduced into a multistage air compression system () having n stages (n&#x3e;=3) and compressed to a first high pressure that is equal to the final pressure of the air compression system, and, at this final pressure, is introduced () into the air separation plant (). An intercooler is arranged between an i-th stage () (1&#x3c;=i&#x3c;n) and an i+1-th stage () of the air compression system; there, the feed air stream () is cooled in indirect heat exchange with a feed water stream ().

Process and device for air separation and steam generation in a combined system

The invention relates to a method and a device used for the low-temperature separation of air in a distillation column system, comprising at least one high-pressure column () and a low-pressure column (). The method has a high pre-liquifaction of 30% or more. Feed air is introduced into the distillation column system. The distillation column system further has a pre-column (), the operating pressure of which is higher than the operating pressure of the high-pressure column (). A first partial stream () of the feed air is introduced into the pre-column (). The pre-column () has a head condenser (), which is configured as a condenser-evaporator having a condensation chamber and an evaporation chamber. A gaseous fraction () from the upper region of the pre-column () is introduced into the condensation chamber of the head condenser (). Fluid () formed in the condensation chamber is at least partially applied to the pre-column () as runback (). A second partial stream () of the feed air is introduced into the evaporation chamber of the head condenser ().

Method and device for low-temperature air separation

A method for the transport of carbon dioxide from a feed means to a removal means in a pressure pipe, which method includes the production of a transport mixture containing up to 80 mol % carbon dioxide and an inert gas, in particular nitrogen, in the feed means, the pressurised feeding of the transport mixture into the pressure pipe, and the pressurised transport of the transport mixture in the pressure pipe to the removal means.

Growing community of inventors

Wolfratshausen, Germany

Alexander Alekseev