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Fischer-Tropsch synthesis in a bottom split reactive dividing wall column
Chemical Engineering and Processing: Process Intensification ( IF 3.8 ) Pub Date : 2019-12-28 , DOI: 10.1016/j.cep.2019.107798
Alireza Arjomand , Mehdi Panahi , Ahmad Rafiee

This paper aims to investigate if Fischer-Tropsch Synthesis (FTS) is feasible in a bottom split reactive dividing wall column (BS-RDWC) from a theoretical viewpoint. In-built thermodynamic procedures of Aspen Plus, along with a detail kinetic model proposed by Iglesia et al. that predicts the consumption rate of CO and production rate of methane, and the Anderson-Schulz-Flory (ASF) model that relates products distribution to chain growth probability are used in carrying out the simulations. The chain growth probability depends on partial pressures of H2 and CO and temperature of each stage of the BS-RDWC. The rigorous simulation results show that the BS-RDWC has a product yield of 3.92 kg/hr for syngas mass flow of 12.23 kg/hr, CO conversion of 86 %, H2 conversion of 93 %, and carbon efficiency of 0.59. Simulation results of the BS-RDWC are compared with a conventional FT reactor followed by a distillation column. The results showed that the BS-RDWC configuration has higher total product yield and produces hydrocabon products with a higher purity than the conventional configuration.



中文翻译:

底部分裂反应式分隔壁塔中的费托合成

本文旨在从理论的角度研究费-托合成(FTS)在底部裂分反应式分隔壁塔(BS-RDWC)中是否可行。Aspen Plus的内置热力学程序以及Iglesia等人提出的详细动力学模型。该模型可预测CO的消耗率和甲烷的生产率,并使用将产品分布与链增长概率相关联的Anderson-Schulz-Flory(ASF)模型进行模拟。链增长的概率取决于H 2和CO的分压以及BS-RDWC每个阶段的温度。严格的模拟结果表明,BS-RDWC的合成气质量流量为12​​.23 kg / hr,CO转化率为86%,H 2的产品收率为3.92 kg / hr转化率为93%,碳效率为0.59。将BS-RDWC的模拟结果与常规FT反应器和随后的蒸馏塔进行了比较。结果表明,与常规构造相比,BS-RDWC构造具有更高的总产品收率并生产出具有更高纯度的氢化碳产品。

更新日期:2019-12-28
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