Simulation of fixed bed reactor for dimethyl ether synthesis |
| |
Authors: | Shin Beom Lee Wonjun Cho Dal Keun Park En Sup Yoon |
| |
Affiliation: | (1) School of Chemical Engineering, Seoul National University, San 56-1 Sillim-dong, Gwanak-gu, 151-742 Seoul, Korea;(2) LNG Technology Research Center, KOGAS, Dongchun-dong, Yeonsu-gu, 406-130 Incheon, Korea |
| |
Abstract: | Dimethyl Ether (DME) is considered as one of the most promising candidates for a substitute for LPG and diesel fuel. We analyzed
one-step DME synthesis from syngas in a shell and tube type fixed bed reactor with consideration of the heat and mass transfer
between catalyst pellet and reactants gas and effectiveness factor of catalysts together with reactor cooling through reactor
wall. Simulation results showed strong effects of pore diffusion. We compared two different arrangements of catalysts, mixture
of catalyst pellets (methanol synthesis catalyst and methanol dehydration catalyst) and hybrid catalyst. Hybrid catalyst gave
better performance than a mixture of pellets in terms of CO conversion and DME productivity, but more difficulties with reactor
temperature control. Use of inert pellets and inter-cooling was also simulated as a means of controlling maximum reactor temperature. |
| |
Keywords: | Reactor Modelling Dimethyl Ether DME Fixed Bed Simulation Effectiveness Factor |
本文献已被 SpringerLink 等数据库收录! |
|