| 摘要 |
<p>The present invention relates to a method for the recovery of very pure CO2 from flue gases, which method comprises the following steps: a) absorption of CO2 from the flue gases in a solvent in an absorber, a CO2-depleted gas stream and a CO2-rich solvent stream leaving the absorber; b) desorption of the absorbed CO2 in a desorber, a CO2-rich gas stream and a CO2-depleted solvent stream leaving the desorber; wherein the solvent used is an aqueous solution that contains an alkanolamine and an activator. Preferably a combination of methyldiethanolamine and piperazine is used. Using the method according to the invention it is possible to recover very pure CO2, that can be designated as high purity or food grade CO2.</p> |
