Facility for cooling a gas flow containing co2 and method using such a facility

An installation for cooling a gas stream, containing CO2, water and at least one other component, comprising:

• a scrubbing tower,
• a duct configured to send the gas stream at a first temperature to the bottom of the tower,
• a duct configured to send water at a second temperature, which is lower than the first temperature, to a first level at the top of the scrubbing tower,
• a pump,
• a duct being connected to the bottom end of the column and configured to remove the bottom water and to the pump so as to pressurize the water removed from the bottom end,.
• a withdrawing means for withdrawing water downstream of the pump, the withdrawing means being connected to the tower and configured to send the pressurized water at a third temperature to an indirect heat exchanger located in the tower at a second level above the first level, the third temperature being higher than the second temperature but lower than the first temperature.

A method for cooling a gas stream, containing CO2, water and at least one other component, comprising.

• sending the gas stream at a first temperature to the bottom of a scrubbing tower,.
• scrubbing the stream with water sent to a first level at the top of the scrubbing tower at a second temperature, which is lower than the first temperature,.
• removing gas at least partially purified of water at the top of the tower at a temperature lower than the first temperature,
• water is removed at the bottom end of the scrubbing tower and pressurized in a pump,.
• the water pressurized by the pump is sent, without having been cooled, at a third temperature to an indirect heat exchanger located in the tower at a second level above the first level,
• wherein the third temperature is higher than the second temperature but lower than the first temperature, and
• wherein the first portion of the water is cooled in the indirect heat exchanger in order to introduce heat at the top of the scrubbing tower.