Mathematical simulation and design of three-phase bubble column reactor for direct synthesis of dimethyl ether from syngas

作者：Liu Dianhua; Hua Xing; Fang Dingye^*

来源：Journal of Natural Gas Chemistry, 2007, 16(2): 193-199.

DOI：10.1016/S1003-9953(07)60047-4

• dimethyl ether
• syngas
• three-phase reactor
• DME synthesis
• slurry bed
• mathematical simulation model

A three-phase reactor mathematical model was set tip to simulate and design a three-phase bubble column reactor for direct synthesis of dimethyl ether (DME) from syngas, considering both the influence of part inert carrier backmixing on transfer and the influence of catalyst grain sedimentation on reaction. On the basis of this model, the influences of the size and reaction conditions of a 100000 t/a DME reactor on capacity were investigated. The optimized size of the 10000 t/a DME synthesis reactor was proposed as follows: diameter 3.2 m, height 20 m, built-in 400 tube heat exchanger (phi 38x2 mm), and inert heat carrier paraffin oil 68 t and catalyst 34.46 t. Reaction temperature and pressure were important factors influencing the reaction conversion for different size reactors. Under the condition of uniform catalyst concentration distribution, higher pressure and temperature were proposed to achieve a higher production capacity of DME. The best ratio of fresh syngas for DME synthesis was 2.04.

• 出版日期2007-6
• 单位华东理工大学