| abstract |
The invention belongs to the technical field of gas separation, provides a decarburization solution for capturing carbon dioxide in mixed gas that can reduce the influence of hygroscopicity, and effectively reduces the influence of the hygroscopicity of the solvent on the performance of non-aqueous solutions. An activator whose mass percentage is 0.1-20wt% and the concentration is 0.1-2mol/L is added to the original mixed decarburization solution. On the basis of the desorption principle of the EMEA composite decarburization solution, by adding a trace amount of piperazine aqueous solution, the absorption capacity of the EMEA solution is enhanced while the regeneration efficiency is ensured, and the original energy consumption is basically maintained. The composite decarburization solution of the present invention reduces the influence of the water content in the flue gas on the performance of the EMEA mixed decarburization solution by adding the piperazine aqueous solution, which is mainly reflected in two aspects. One is to maintain and increase the absorption of the original mixed solution. , and second, its regeneration efficiency has little effect. |