THERMODYNAMIC ANALYSIS OF DIMETHYL ETHER SYNTHESIS BY CO_2 HYDROGENATION

Thermodynamic calculations of the synthesis processes of both dimethyl ether and methanol is made.The results show that CO 2 equilibrium conversion rate of dimethyl ether synthesis is higher than that of methanol synthesis in the same reaction conditions.For the process of dimethyl ether synthesis by CO 2 hydrogenation,the equilibrium conversion decreases with the increasing of temperature,and increases with the increasing of pressure,the higher ratio of H 2 to CO 2 is profitable to the reaction of dimethyl ether synthesis from CO 2.