Method for mist control

摘要

A method for capturing CO2 from a CO2 containing gas (1), such as en exhaust gas from a thermal power plant fired on carbonaceous fuel, or any other CO2 containing industrial gas, where CO2 is captured from the gas by causing the gas to flow counter current to a CO2 absorbing solvent introduced into a CO2 absorption section (3) in an absorber (2) so that CO2 present in the gas is absorbed by the CO2 absorbing solvent to form a CO2 rich solvent (5), where CO2 rich solvent is collected on the bottom of the of the absorption column and withdrawn for regeneration, and where the treated exhaust gas (8) is released to the atmosphere after being subjected to one or more washing step(s) (6,7), wherein the temperature of the CO2 absorbing solvent (4) introduced into the CO2 absorption section has a temperature that is less than 5° C. lower than the maximum temperature in the absorption section of the absorber, is described.

主权项

1. A method for capturing CO2 from a CO2 containing gas, the method comprising:
capturing CO2 from the CO2 containing gas by causing the CO2 containing gas to flow upwards counter current to an aqueous amine solvent flowing once-through downwards in a CO2 absorption section in an absorber so that CO2 present in the CO2 containing gas is absorbed by the aqueous amine solvent to form a CO2 rich solvent; wherein the CO2 rich solvent is collected at a bottom of the absorber and withdrawn for regeneration; wherein a treated exhaust gas is released to an atmosphere after being subjected to one or more washing step(s) where the treated exhaust gas is washed in counter current flow to water; and wherein a temperature of the aqueous amine solvent introduced into the CO2 absorption section is less than or equal to a maximum temperature in the absorption section and not more than 5° C. lower than the maximum temperature in the absorption section of the absorber, thereby reducing amine mist formation.