C312 catalyst for methanol synthesis at low or medium pressure

A novel methanol synthesis catalyst C312 developed by the Southwest Research and Design Institute of Chemical Industry was introduced and its performances were evaluated experimentally.Under 5.0MPa,250℃,space velocity of 10,000h-1,and feed gas volume composition of CO 12.0%～17.0%,CO2 3.0%～4.5%,N2 1.0%～12.0% and H2 68%～74%,the highest space time yield of methanol was up to 1.91 g·ml-1·h-1,and total conversion of CO was above 75% in once through.At 8.0 MPa,250℃,space velocity of 16,000h-1,H2/CO2 molar ratio of about 3 in feed gas without CO,the methanol space time yield could achieve 0.94 g·ml-1·h-1 with a CO2 total conversion of 22.2%.The excellent activity,selectivity and thermal stability of C312 catalyst makes it very suitable for use in large-scale methanol synthesis units.