Abstract：The technology of olefin oligomerization to synthesize liquid fuel has broad application prospects in military and civil fields. Based on the theory of finite-time thermodynamics, the chemical process model including a mixer, a compressor, a heat exchanger and an ethylene oligomerization reactor was established and optimized. The compressor outlet pressure, the heat exchanger outlet temperature and the optimal temperature configurations of the heat reservoirs outside the heat exchanger and the reactor for the minimum entropy generation rate of the chemical process were derived under the condition of a given yield of C10H20. The optimization results were also compared with those for the reference chemical process and the process with the minimum entropy generation rate of the reactor. The results showed that the entropy generation rate for the optimal process was reduced by 3.21% compared to that for the reference chemical process and by 1.30% compared to that for the process with the minimum entropy generation of the reactor when the heat exchanger outlet temperature was 608.18 K and compressor outlet pressure was 2.68 MPa. The obtained results in this paper could be a certain theoretical guidance for the optimal design of olefin oligomerization reaction process.
YU Yajie,XIA Shaojun,ZHAO Ming. Minimization of Entropy Generation Rate in the Chemical Process of Olefins Oligomerization[J]. Chemical Reaction Engineering and Technology, 2023, 39(1): 72-80.
