Entropy Generation Rate and Hydrogen Production Rate Analyses for Steam Methane Reforming Reactor Heated by Molten Salt

doi:10.12096/j.2096-4528.pgt.19106

Abstract

Abstract:

Solar thermochemical energy storage can effectively solve the uneven distribution of solar energy in time and space. Based on the model of industrial methane steam reforming reactor, the model of steam methane reforming reactor heated by molten salt (MS-SMRR) was established by using finite time thermodynamics, and the design parameters of MS-SMRR were obtained. The effects of geometric parameters and operation parameters of MS-SMRR on hydrogen production and total entropy production were analyzed. The results indicate that the total entropy generation rate and the consumption of the molten salt in a counter-flow reference reactor are smaller than those in a parallel-flow reference reactor when the hydrogen production rate is constant. The hydrogen production rate can be enhanced observably by increasing the inlet temperature of the molten salt and decreasing the inlet pressure of the mixture gas. The research results have certain theoretical guiding significance for the optimization design of actual MS-SMRR.

Key words: thermochemical energy storage, steam methane reforming reactor, molten salt, entropy generation rate, hydrogen production rate, finite-time thermodynamics

CLC Number:

TK121

Penglei LI,Lingen CHEN,Shaojun XIA,Lei ZHANG,Chao WANG,Huijun FENG. Entropy Generation Rate and Hydrogen Production Rate Analyses for Steam Methane Reforming Reactor Heated by Molten Salt[J]. Power Generation Technology, 2020, 41(4): 415-428.

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