A Process And A System For The Removal And High Pressure Recovery Of Carbon Di Oxide From A High Pressure Raw Gas.

Abstract: This invention provides a process and a system for the removal and high- pressure recovery of carbon dioxide from a high-pressure raw gas wherein a raw gas containing carbon dioxide is fed to a decarbonation tower where the raw gas is brought into gas-liquid contact with a partially regenerated absorbing fluid in a lower absorption section so as to cause carbon dioxide to be partially absorbed thereinto, and then brought into gas-liquid contact with a regenerated absorbing fluid in an upper absorption section so as to cause carbon dioxide to be absorbed thereinto until a very low carbon dioxide concentration is reached; and high-pressure carbon dioxide is recovered from the resulting carbon dioxide-loaded absorbing fluid, as well as a system therefore. This invention makes it possible to remove highly concentrated carbon dioxide from high-pressure natural gas and various synthesis gases with the aid of a carbon dioxide absorbing fluid until a very low carbon dioxide concentration is reached and, moreover, to recover high-pressure carbon dioxide from the absorbing fluid.

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