催化学报

催化学报 ›› 2011, Vol. 32 ›› Issue (7): 1242-1249.DOI: 10.3724/SP.J.1088.2011.01043

• 研究论文 • 上一篇    下一篇

费托反应本征动力学中合成气分压对反应速率的影响

华新雷 1,*, 王立刚 1, 徐勇华 1, 王尤崎 1, 高滋 2   

  1. 1亚申科技研发中心 (上海) 有限公司, 上海 201203; 2复旦大学化学系, 上海 200433
  • 收稿日期:2011-02-21 修回日期:2011-04-15 出版日期:2011-07-18 发布日期:2014-11-28

Effect of Syngas Partial Pressure on Fischer-Tropsch Reaction Rate

HUA Xinlei1,*, WANG Ligang1, XU Yonghua1, WANG Youqi1, GAO Zi2   

  1. 1Yashentech Corporation (Shanghai) Research Center, Shanghai 201203, China; 2Department of Chemistry, Fudan University, Shanghai 200433, China
  • Received:2011-02-21 Revised:2011-04-15 Online:2011-07-18 Published:2014-11-28

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被引次数

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摘要： 利用高通量动力学反应器测量了钴基费托催化剂上反应物消耗速率 rCO 和产物生成速率 rCH4 随固定床床层的分布, 并考察了它们在不同入口分压 (p0CO, p0H2) 条件下的变化. 结果表明, 入口氢碳比 (H/C)0 = p0H2/p0CO 为影响速率的敏感外部变量, 反应速率随 (H/C)0 的增加而加快; 而合成气总压 p0H2+CO 则为不敏感量. 由床层各点在不同 (p0H2, p0CO) 条件下的本征反应速率可以建立适用于催化剂颗粒的反应速率公式. 结果显示, 利用简单的原料气分压 (pH2, pCO) 作为表象空间, 所建立的费托反应动力学参数与床层内转化率有关. 提出了由测量本征速率建立反应器模型的方法.

关键词: 费托反应, 动力学, 速率公式, 高通量实验技术

Abstract: The syngas consumption rate rCO and CH4 production rate rCH4 along a fixed-bed reactor for Fischer-Tropsch synthesis were measured via a high-throughput kinetic reactor under different inlet pressure (p0H2, p0CO). The data showed that within non-diffusion limited regime the feed ratio p0H2/p0CO is the determining variable while p0H2+CO is non-sensitive. The bed-level intrinsic rate measured under various inlet pressure can be used to establish the pellet level rate-law. The results showed that for rate law using the simple (pH2, pCO) representation the parameters for CO consumption reaction are dependent on the local conversion at pellet position along the bed.

Key words: Fischer-Tropsch reaction, kinetics, rate law, high-throughput experimentation