The pilot testing of the catalyst for selective hydrogenation of acetylene

Abstract

The pilot testing of the promoted alumino-palladium catalyst SGA-2M in the selective hydrogenation of acetylene on an industrial ethane-ethylene fraction (EEF) as feed in the system of two consecutive adiabatic flow reactor was performed. The process optimum conditions are identified at which acetylene conversion is 100 % with a selectivity of ethylene 68,2 %: the pressure in the system – 21 atm, space velocity of hydrocarbons – 1500 h–1, the concentration of carbon monoxide – 7 ppm, the molar ratio of H2 : C2H2 on the first and second stages of the hydrogenation is 1,0 : 1,0 and 1,4 : 1,0, temperature of feed at the entrance to the first and second reactors – 40 and 55 °C respectively. The service cycle of the catalyst SGA-2M under optimal conditions is estimated as 12 months. Catalyst SGA-2M can be recommended for treatment EEF, containing up to 2 %vol. of acetylene.