Patent ID: 9285163
Filing Date: 2016-03-15
CPC Classification: B01D,F25J,Y02C

Claim Text:
1. A process for cooling and compressing a gas rich in carbon dioxide comprising: i) cooling a mixture against a liquid rich in carbon dioxide, wherein the mixture comprises water and an antifreeze agent, wherein the liquid rich in carbon dioxide vaporizes to form a carbon dioxide rich gas: ii) cooling a wet feed gas, which is rich in carbon dioxide, with the mixture in a column in order to produce a flow of gas rich in carbon dioxide; and iii) compressing the flow of gas rich in carbon dioxide in a compressor; and iv) mixing the carbon dioxide rich gas formed in step i) with the flow of gas rich in carbon dioxide at a location that is selected from the group consisting of downstream the compressor, at an inter-stage of the compressor, at the head of the column, and combinations thereof, wherein the liquid rich in carbon dioxide originates from a source selected from the group consisting of an external source, a liquid produced by or derived from liquefaction of the flow of gas rich in carbon dioxide compressed in the compressor, and combinations thereof.