Study on Acetone Conversion into Ethylene and Propylene
LI Xiaohong, WANG Hongtao, ZHENG Yijun, MA Xiaoke, WANG Yanxue, JIANG Liyan, QI Guozhen
SINOPEC Shanghai Research Institute of Petrochemical Technology Company Limited, State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Shanghai 201208, China
Abstract：In order to achieve highly selective conversion of the by-product acetone (produced in the process of methanol to olefins) into ethylene and propylene, the reaction of acetone over SAPO-34 catalyst during continuous operation was investigated at different reaction temperatures and acetone concentrations in a fluidized bed reactor. The results were compared with the conversion results of methanol or butanone over SAPO-34 catalyst. The experimental phenomena were analyzed in detail in combination with the acetone conversion path reported in the literature. Under the conditions of reaction temperature of 550 ℃, pressure of 0.28 MPa, feed space velocity of 0.31 h-1 and feed concentration of 30% (mass fraction), the conversion of acetone was 94.37% and the selectivity of ethylene and propylene was 53.2%. This study has certain guiding significance for the efficient utilization of acetone, a by-product of methanol to olefins process.
LI Xiaohong,WANG Hongtao,ZHENG Yijun et al. Study on Acetone Conversion into Ethylene and Propylene[J]. Chemical Reaction Engineering and Technology, 2023, 39(3): 240-245.
