Configurations and methods of high pressure acid gas removal

B - Operations – Transporting – 01 – D

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B01D 53/18 (2006.01) C01B 31/02 (2006.01)

Patent

CA 2738662

Acid gas is removed from a feed gas using a physical solvent that is regenerated using successive flashing stages after heating of the rich solvent using low-level waste heat that is preferably produced or available within the acid gas removal plant. Especially preferred waste heat sources include compressor discharges of the refrigeration system and/or recompression system for CO2, and/or (low level) heat content from the feed gas.

Linvention concerne lélimination dun gaz acide à partir dun gaz dalimentation, qui utilise un solvant physique qui est régénéré en utilisant des étapes successives dévaporation instantanée après le chauffage du solvant riche en utilisant de la chaleur résiduelle de faible niveau qui est de préférence produite ou disponible dans linstallation délimination du gaz acide. Les sources particulièrement préférées de chaleur résiduelle comprennent les décharges de compresseur du système de réfrigération et/ou du système de recompression pour CO2, et/ou la teneur en chaleur (de faible niveau) du gaz dalimentation.

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