A thermochemical reactor design with better thermal management and improved performance for methane/carbon dioxide dry reforming

被引：13
|
作者：
Dai, Zhou-Qiao [1 ]
Yang, Yong-Jian [1 ]
Yang, Wei-Wei [1 ]
Rong, Long [1 ]
Tang, Xin-Yuan [1 ]
机构：
[1] Xi An Jiao Tong Univ, Sch Energy & Power Engn, Key Lab Thermo Fluid Sci & Engn MOE, Xian, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2022年 / 47卷 / 82期
基金：
中国国家自然科学基金;
关键词：
Dry reforming of methane; Solar thermochemical reactor; Better thermal management; Reaction kinetics; VOLUMETRIC SOLAR RECEIVER; HEAT-TRANSFER; ENERGY-STORAGE; CARBON-DIOXIDE; RADIATION; CATALYST; TRANSIENT; FLOW; BED;
D O I：
10.1016/j.ijhydene.2022.08.079
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A solar thermochemical reactor with better thermal management is proposed to improve the performance for dry reforming of methane. Conical cavity is introduced in the ther-mochemical reactor to adjust incident solar radiation distribution. Preheating area is adopted to recover sensible heat from gas outlet. Multiphysical model is presented for analyzing the overall performance of the reactor under different inlet flow rates. Also, local ideal reaction temperature required for maximizing local hydrogen production is analyzed according to the reaction kinetics. It is shown that better synergy between real temperature distribution and ideal temperature requirement can be achieved in this new reactor. Compared with conventional reactor, the present reactor exhibits the better performance in terms of reactant conversion, energy storage efficiency and hydrogen yield. Particularly, hydrogen yield is increased by 4.31%-17.12% at inlet flow rates between 6 and 12 L min-1.(c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：34794 / 34809
页数：16
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