Integrated process and installation for the separation of air fed by compressed air from several compressors
AssigneeL'Air Liquide, Societe Anonyme a Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorsJean-Renaud Brugerolle, Bao Ha
Life of this patent
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Abstract
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 enriched air O from the air separation unit is sent to the blast furnace.
Claims13
Process for feeding oxygen to a unit consuming oxygen-enriched air comprising the following steps:
- compressing a first stream of air in a first compressor so as to obtain a first stream of compressed air;
- dividing said first stream of compressed air into a first part and a second part;
- sending the first part to a unit consuming oxygen-enriched air;
- purifying the second part in a purification unit to obtain purified air;
- sending the purified air to a separation unit to produce at least one stream enriched in oxygen, and one stream enriched in nitrogen;
- sending at least part of the steam enriched in oxygen to the unit consuming oxygen;
- providing a gas turbine comprising a combustion chamber and a gas turbine compressor;
- compressing a second stream of air in the gas turbine compressor to obtain a second stream of compressed air;
- dividing said second stream of compressed air into a first fraction and a second fraction;
- sending the first fraction to the combustion chamber;
- sending the second fraction to the purification unit to obtain a purified second fraction;
- and
- sending the purified second fraction to the air separation unit.
An integrated apparatus for feeding oxygen to a unit consuming oxygen-enriched air comprising:
- a first compressor for compressing a first stream of air and obtain a first stream of compressed air;
- means for dividing said first stream of compressed air into a first part and a second part;
- at least one purification unit;
- an air separation unit;
- a unit consuming oxygen-enriched air;
- conduit means for sending the first part to said unit consuming oxygen-enriched air;
- conduit means for sending the second part to the purification unit and then to the air separation unit;
- a second compressor for compressing a second stream of air and obtain a second stream of compressed air;
- means for dividing the second stream of compressed air into a first fraction and a second fraction;
- at least one gas turbine comprising a combustion chamber and a gas turbine compressor;
- conduit means for sending the first fraction to the combustion chamber;
- conduit means for sending the second fraction to a purification unit and then to the air separation unit;
- and
- said air separation unit having a first outlet for removing an oxygen-enriched fluid, and a second outlet for removing a nitrogen-enriched fluid.
Dependencies are inferred from the claim text.