The chemical absorption of amine solution is exothermic and reversible because of its low cost, reusability, high carbon capture efficiency and good thermal stability. The higher the temperature, the greater the reversal of the reaction. Therefore, in the high temperature system, the lower carbon dioxide absorption efficiency will make the amine solution samples commonly used in this process dissolve monoethanolamine (MEA), diethanolamine (DMA) and methane.<br>The mechanism of absorption of carbon dioxide by monoethanolamine takes Zwitterion as the main reaction, which is divided into two parts: one is that carbon dioxide generates ion exchanger molecules, the other is that it reacts with monoethanolamine, and the equation is 5. For monoethanolamine solution to absorb carbon dioxide, it is called MEAH+CO- that is, "carbonate".<br>Then, one methyl carbonate molecule reacts with another monoethanolamine molecule to form proton transfer, as shown in Equation 6.
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