METHOD FOR THE CRYOGENIC SEPARATION OF AIR, AND AIR SEPARATION PLANT
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United States of America
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Nov 28, 2024
app pub date -
Sep 1, 2022
filing date -
Sep 1, 2022
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Abstract
The invention relates to an air separation plant for cryogenic separation, said plant being designed to carry out a high-air-pressure process, wherein nitrogen is removed from the pressure column, expanded in a turbine that is coupled to a cold booster, and heated. Separately from the nitrogen which is removed from the pressure column, nitrogen is removed from the low-pressure column and heated to the same temperature. Before expansion in the turbine that is coupled to the cold booster, the nitrogen removed from the pressure column is heated to a temperature in a temperature range of −100 to 50° C. During expansion, the nitrogen cools down to a temperature in a temperature range of −150 to −40° C. and is then heated again. The invention also relates to a corresponding air separation plant.
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