Abstract The concept of circulating fast fluidization with in-situ water removal using zeolite-4A particles is introduced to the methanol synthesis process. The mathematical model of a circulating fast fluidized bed reactor (CFFBR) is validated by an actual industrial plant data. Also, the industrial plant feed data is used to test the performance of a bubbling fluidized bed reactor (FBR). The CFFBR with varying adsorbent compositions is investigated. The system exhibits optimum conditions at a low feed temperature of 201.75 °C due to water removal and thermodynamic equilibrium shift. The methanol production has substantially increased about 14-folds. The increase of the adsorbent mass concentration >50.0% has a little effect on the maxima due to the total conversion of carbon. It is interesting to note that feeds rich in CO2 and lean in CO are susceptible to a significant improvement of methanol production. The sensitivity analysis shows that the increase of H2 in the feed decreases CO formation and consequently increases the carbon conversion to methanol. Moreover, the pressure is more effective at low ranges due to a high carbon conversion. The high efficiency shown by the CFFBR in this study suggests a promising application of these reactor generations in the methanol industry.

中文翻译：

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循环快速流化床反应器吸附增强甲醇合成工艺的效率研究

摘要 将使用沸石4A颗粒原位脱水的循环快速流化概念引入到甲醇合成过程中。循环快速流化床反应器（CFFBR）的数学模型通过实际工业工厂数据进行验证。此外，工厂进料数据用于测试鼓泡流化床反应器 (FBR) 的性能。研究了具有不同吸附剂组成的 CFFBR。由于水分去除和热力学平衡偏移，该系统在 201.75 °C 的低进料温度下表现出最佳条件。甲醇产量大幅增加约 14 倍。由于碳的总转化率，吸附剂质量浓度的增加 > 50.0% 对最大值的影响很小。有趣的是，富含 CO2 和贫 CO 的进料容易显着提高甲醇产量。敏感性分析表明，进料中 H2 的增加减少了 CO 的形成，从而增加了碳向甲醇的转化。此外，由于碳转化率高，压力在低范围内更有效。CFFBR 在本研究中显示的高效率表明这些反应器代在甲醇工业中的应用前景广阔。