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Sensitivity Analysis and Multi-Objective Optimization of Oxidative Dehydrogenation of Propane in a Fixed-bed Reactor over Vanadium/Graphene for Propylene Production
Chemical Engineering & Technology ( IF 1.8 ) Pub Date : 2021-12-07 , DOI: 10.1002/ceat.202100399 Armin Fazlinezhad 1 , Moslem Fattahi 2 , Rouzbeh Tavakoli-Chaleshtori 1 , Hosna Rezaveisi 3
Chemical Engineering & Technology ( IF 1.8 ) Pub Date : 2021-12-07 , DOI: 10.1002/ceat.202100399 Armin Fazlinezhad 1 , Moslem Fattahi 2 , Rouzbeh Tavakoli-Chaleshtori 1 , Hosna Rezaveisi 3
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Oxidative dehydrogenation of light alkanes is an attractive route for the production of olefins. This method does not need much energy, while common processes such as propane dehydrogenation and cracking require external energy resources and cause rapid catalyst deactivation. In this research, an isothermal one-dimensional model of a fixed-bed reactor was considered for oxidative dehydrogenation of propane over a V2O5/graphene catalyst. Operational parameter sensitivity analysis showed that high temperature (450–500 °C), high pressure (7–8 atm), a moderate molar propane to air feed ratio (about 0.7), and a low feed flow rate enhanced the propane conversion and propylene productivity. However, for the production of propylene as desirable product, low temperature, low pressure, a high molar ratio, and a high feed flow rate are preferred. Thus, to determine the exact interval of operational parameter values, a multi-objective optimization was performed for the yields of propylene and COx, revealing a maximum propylene yield of ∼40 %. For safety reasons, a feed molar ratio of propane to air of > 0.6 was preferred, which is not in the flammable region.
中文翻译：
钒/石墨烯固定床反应器丙烷氧化脱氢生产丙烯的敏感性分析及多目标优化
轻质烷烃的氧化脱氢是生产烯烃的有吸引力的途径。该方法不需要太多能源，而丙烷脱氢和裂解等常见工艺需要外部能源，并导致催化剂快速失活。在这项研究中，一个固定床反应器的等温一维模型被考虑用于丙烷在 V 2 O 5上的氧化脱氢。/石墨烯催化剂。操作参数敏感性分析表明，高温 (450–500 °C)、高压 (7–8 atm)、适度的丙烷与空气摩尔进料比 (约 0.7) 和低进料流速提高了丙烷转化率和丙烯生产率。然而，为了生产丙烯作为所需产品，低温、低压、高摩尔比和高进料流速是优选的。因此，为了确定操作参数值的准确区间，对丙烯和 CO x的收率进行了多目标优化，显示最大丙烯收率约为 40%。出于安全原因，丙烷与空气的进料摩尔比 > 0.6 是优选的，这不在易燃区域内。
更新日期：2022-02-10
中文翻译：
钒/石墨烯固定床反应器丙烷氧化脱氢生产丙烯的敏感性分析及多目标优化
轻质烷烃的氧化脱氢是生产烯烃的有吸引力的途径。该方法不需要太多能源，而丙烷脱氢和裂解等常见工艺需要外部能源，并导致催化剂快速失活。在这项研究中，一个固定床反应器的等温一维模型被考虑用于丙烷在 V 2 O 5上的氧化脱氢。/石墨烯催化剂。操作参数敏感性分析表明，高温 (450–500 °C)、高压 (7–8 atm)、适度的丙烷与空气摩尔进料比 (约 0.7) 和低进料流速提高了丙烷转化率和丙烯生产率。然而，为了生产丙烯作为所需产品，低温、低压、高摩尔比和高进料流速是优选的。因此，为了确定操作参数值的准确区间，对丙烯和 CO x的收率进行了多目标优化，显示最大丙烯收率约为 40%。出于安全原因，丙烷与空气的进料摩尔比 > 0.6 是优选的，这不在易燃区域内。
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