Comparative Kinetic Analysis and Process Optimization for the Production of Dimethyl Ether via Methanol Dehydration over a γ-Alumina Catalyst,Chemical Engineering & Technology

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Comparative Kinetic Analysis and Process Optimization for the Production of Dimethyl Ether via Methanol Dehydration over a γ-Alumina Catalyst
Chemical Engineering & Technology ( IF 1.8 ) Pub Date : 2021-12-07 , DOI: 10.1002/ceat.202100441
Abdulrahman A. Al-Rabiah ₁ , Abdulelah S. Alshehri _{1,

2} , Arimiyawo Ibn Idriss ₁ , Omar Y. Abdelaziz _{3,

4}

Affiliation

Various kinetic models of methanol dehydration to dimethyl ether over a commercial γ-alumina catalyst were compared with a view to selecting the most appropriate model as a basis for process optimization. To achieve significant improvements in the conventional design, the Berčič-and-Levec kinetic model was employed and process intensification was applied to develop a more energy-efficient process, by enhancing the adiabatic reactor performance and maximizing the heat recovery from the highly exothermic reactor. The single-pass conversion of methanol was increased to 83 %, with an inlet temperature of 217 °C to the adiabatic reactor. Application of process intensification resulted in an improved flowsheet, which reduced the total energy requirements by 59.3 % and cut the CO₂ emissions by 60.8 %.

中文翻译：

γ-氧化铝催化剂甲醇脱水制备二甲醚的比较动力学分析和工艺优化

比较了商业γ-氧化铝催化剂上甲醇脱水制二甲醚的各种动力学模型，以选择最合适的模型作为工艺优化的基础。为了显着改进传统设计，采用了 Berčič-and-Levec 动力学模型，并通过提高绝热反应器性能和最大限度地提高高放热反应器的热回收率来开发更节能的工艺。甲醇的单程转化率提高到 83%，绝热反应器的入口温度为 217 °C。工艺强化的应用改善了流程，将总能源需求降低了 59.3%，并将 CO ₂排放量降低了 60.8%。

更新日期：2022-02-10

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