A METHOD FOR COLLECTING CARBON DIOXIDE IN MIXED GAS WITH COMPOSITE DECARBURIZED SOLUTION

摘要

A method for collecting carbon dioxide in mixed gas with composite decarburized solution. Said composite decarburized solution consists of solvent, main absorbing constituent, assistant absorbing constituent, activated constituent, inhibitor and antioxidant. Wherein the solvent is one or more solvent selected from benzyl alcohol, phenethyl alcohol, N-methyl pyrrolidone, and the main absorbing constituent is selected from monoethanolamine（MEA），and the assistant absorbing constituent is one or more constituent selected from ethylenediamine（EDA）, diethylene triamine（DETA）, triethylene tetraamine（TETA）, and the activated constituent is one or more constituent selected from piperazidine（PZ）, 2，3-diacetyl， and the inhibitor is selected from sodium chromate, as well as the antioxidant is selected from sodium metavanadate and copper carbonate.