ENGINEERING PROBLEMS. OPERATION AND PRODUCTION Pilot Tests of a Catalyst for the Selective Hydrogenation of Methylacetylene and Propadiene

pressure in the system, 18 atm; hydrocarbon feedstock hourly space velocity (HSV), 2100 h –1 ; molar ratio of hydrogen to the sum of methylacetylene and propadiene in the first and second reactors, respectively, 1.1 : 1.0 and 1.6 : 1.0; temperatures, 50 and 55 °C. Under these conditions, KGS�3 catalyst ensures 100% conversion of methylacetylene and propadiene with a propylene selectivity of 76.7%. The expected service life of this cat� alyst is about 14 months. The catalyst can be used for the purification of hydrocarbon fractions containing up to 5 wt % of acetylene and diene admixtures.