HE Shumin,PENG Wanwang,WANG Xueyun. Simulation of methanol synthesis process with annual output of 1 million tons and investigation of influencing factors[J]. Coal Science and Technology,2023,51(S1):477−483
. DOI: 10.13199/j.cnki.cst.2022-1441Citation: |
HE Shumin,PENG Wanwang,WANG Xueyun. Simulation of methanol synthesis process with annual output of 1 million tons and investigation of influencing factors[J]. Coal Science and Technology,2023,51(S1):477−483 . DOI: 10.13199/j.cnki.cst.2022-1441 |
Methanol is one of the important basic chemical raw materials. In order to realize the efficient utilization of synthesis gas to methanol, the process simulation software Aspen Plus is used to establish a methanol model with an annual output of 1 million tons. Firstly, under certain hypothetical conditions, Aspen Plus is used to establish a methanol synthesis reactor model based on an equilibrium reactor. The synthesis gas is the gas produced by the pressurized pulverized gasifier. The simulation results of a domestic methanol plant with an annual output of 1 million tons show that the simulation results are basically consistent with the actual operation data. The absolute deviation between the design value composed of feed gas and purge gas and the actual simulation value is within ± 2%, the precision of industrial simulation is achieved. On the basis of this model, the influence of recycle ratio of syngas from BGL gasifier and syngas produced by solid slag discharge pulverized coal pressurized gasifier on methanol yield during methanol synthesis were explored. The results show that the H / C ratio of feed gas is 2.05, and the effective gas consumption ton of methanol synthesis feed gas produced by BGL gasification, solid slag removal and crushed coal pressurized gasification is
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