Intrinsic Kinetics of Dimethyl Ether Synthesis from Syngas

摘要/Abstract

摘要： The intrinsic kinetics of dimethyl ether (DME) synthesis from syngas over a methanol synthesis catalyst mixed with methanol dehydration catalyst has been investigated in a tubular integral reactor at 3-7 MPa and 220-260oC. The three reactions including methanol synthesis from CO and H2, CO2 and H2, and methanol dehydration were chosen as the independent reactions. The L-H kinetic model was presented for dimethyl ether synthesis and the parameters of the model were obtained by using simplex method combined with genetic algorithm. The model is reliable according to statistical analysis and residual error analysis. The synergy effect of the reactions over the bifunctional catalyst was compared with the effect for methanol synthesis catalyst under the same conditions based on the model. The effects of syngas containing N2 on the reactions were also simulated.

关键词: dimethyl ether, synthesis, kinetics, syngas

Abstract: The intrinsic kinetics of dimethyl ether (DME) synthesis from syngas over a methanol synthesis catalyst mixed with methanol dehydration catalyst has been investigated in a tubular integral reactor at 3-7 MPa and 220-260oC. The three reactions including methanol synthesis from CO and H2, CO2 and H2, and methanol dehydration were chosen as the independent reactions. The L-H kinetic model was presented for dimethyl ether synthesis and the parameters of the model were obtained by using simplex method combined with genetic algorithm. The model is reliable according to statistical analysis and residual error analysis. The synergy effect of the reactions over the bifunctional catalyst was compared with the effect for methanol synthesis catalyst under the same conditions based on the model. The effects of syngas containing N2 on the reactions were also simulated.

Key words: dimethyl ether, synthesis, kinetics, syngas

Zhaoguang Nie;Hongwei Liu;Dianhua Liu;Weiyong Ying;Dingye Fang. Intrinsic Kinetics of Dimethyl Ether Synthesis from Syngas[J]. 能源化学(英文), 2005, 14 (1): 22-28.

Zhaoguang Nie;Hongwei Liu;Dianhua Liu;Weiyong Ying;Dingye Fang. Intrinsic Kinetics of Dimethyl Ether Synthesis from Syngas[J]. Journal of Energy Chemistry, 2005, 14 (1): 22-28.

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