Staging of the Fischer-Tropsch reactor with an iron based catalyst

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• 作者：Ahmad Rafiee ; Magne Hillestad ; ^{magne.hillestad@chemeng.ntnu.no}
• 关键词：Reactor path ; Staging ; Fischer&ndash ; Tropsch synthesis ; Design functions ; Plug flow
• 刊名：Computers and Chemical Engineering
• 出版年：2012
• 期刊代码：35_00981354
• 类别：et
• 出版时间：6 April, 2012
• 卷：39
• 期：Complete
• 页码：75-83
• 文件大小：1514 K

摘要

The Fischer-Tropsch reactor is sectioned into stages based on the systematic method given by . The design functions are optimized to maximize the concentration of C₁₁₊ at the end of reactor path. The decision variables are fluid mixing, hydrogen distribution, heat transfer area distribution, coolant temperature, and catalyst concentration. With the path temperature constrained by 250 掳C, staging of the reactor will increase the concentration of C₁₁₊. For a three-stage reactor, the concentration is increased by 2.50%compared to a single-stage reactor. The optimal mixing structure is plug flow to have the maximum possible conversion. A case study is conducted to separate and distribute hydrogen along the reactor path. This will reduce H₂/CO at the beginning of the path and increase chain growth probability. The results show that for a three-stage reactor, the concentration of C₁₁₊ is increased by 15.93%compared to single-stage reactor.