Production of entropy minimization of CO2 hydrogenation to light olefins unit reactor with linear phenomenological heat transfer law

Yajie Yu; Shaojun Xia; Ming Zhao

doi:10.1117/12.2611264

14 October 2021 Production of entropy minimization of CO₂ hydrogenation to light olefins unit reactor with linear phenomenological heat transfer law

Yajie Yu, Shaojun Xia, Ming Zhao

Author Affiliations +

Proceedings Volume 11930, International Conference on Mechanical Engineering, Measurement Control, and Instrumentation; 1193035 (2021) https://doi.org/10.1117/12.2611264
Event: International Conference on Mechanical Engineering, Measurement Control, and Instrumentation (MEMCI 2021), 2021, Guangzhou, China

Abstract

Based on the theory of finite-time thermodynamics(FTT), the model of the one-dimensional plug flow reactor for CO2 hydrogenation to light olefins unit with fully temperature controllable heat source temperature and the linear phenomenological heat transfer law is established and optimized. Under the condition of a given decene (C10H20) yield, the optimization objective is to minimize the production of entropy rate. The optimal process configuration for the minimum production of entropy of the reactor is obtained and compared with the reference reactor with constant heat source temperature and optimization results for the case with Newtonian heat transfer law. It shows that the production of entropy of the optimal reactor is reduced by 45.82% compared with the reference reactor. The optimal configuration of the heat source temperature has a rapid decrease firstly, then a rapid increase and a slow decrease finally. The heat transfer law is one of the important factors which affect the production of entropy minimization of the reactor. The obtained results in this paper have a certain theoretical guidance for the optimal design and operation of CO2 hydrogenation to light olefins unit reactor in engineering.

Citation Download Citation

Yajie Yu, Shaojun Xia, and Ming Zhao "Production of entropy minimization of CO₂ hydrogenation to light olefins unit reactor with linear phenomenological heat transfer law", Proc. SPIE 11930, International Conference on Mechanical Engineering, Measurement Control, and Instrumentation, 1193035 (14 October 2021); https://doi.org/10.1117/12.2611264

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