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Title: 3D CFD simulations of acetone hydrogenation in randomly packed beds for an isopropanol-acetone-hydrogen chemical heat pump
Author: Peng, Wenping1, 2; Xu, Min1; Huai, Xiulan1; Liu, Zhigang3
Source: APPLIED THERMAL ENGINEERING
Issued Date: 2016-02-05
Volume: 94, Pages:238-248
Keyword: Chemical heat pump ; Acetone hydrogenation ; Packed bed ; CFD
DOI: 10.1016/j.applthermaleng.2015.10.130
DOC Type: Article
English Abstract: Isopropanol-acetone-hydrogen chemical heat pump (IAH-CHP) is a system having the ability to improve energy-grade and to achieve energy storage simultaneously. Acetone hydrogenation is an important part of IAH-CHP and directly affects the performance of IAH-CHP. In this work, the fully three-dimensional simulations on acetone hydrogenation in randomly packed-bed reactors with small tube-to-particle diameter ratio D/d(p) were carried out by Computational Fluid Dynamics (CFD). The study focused on the heat and mass transfer characteristics at inter- and intra-particles of the bed. The results indicate that the resistance of mass transfer at intra-particles is maximum in the entire transport process. Particle to-fluid heat transfer is the main resistance of heat transfer in the bed. In addition, the synergy between transport of components and reaction rate at intra-particles was analyzed for various structural parameters, such as porosity epsilon(p), pore diameter d(o), particle diameter d(p) and tube-to-particle diameter ratio D/d(p), in order to improve the utilization efficiency of catalyst. This study provides a detailed understanding on transport characteristics both at intra-particles and in fluid zone in randomly packed-bed reactors with small D/d(p), providing a guideline for catalyst and reactor design for this type of chemical heat pump. (C) 2015 Elsevier Ltd. All rights reserved.
WOS Headings: Science & Technology ; Physical Sciences ; Technology
WOS Subject: Thermodynamics ; Energy & Fuels ; Engineering, Mechanical ; Mechanics
WOS Subject Extended: Thermodynamics ; Energy & Fuels ; Engineering ; Mechanics
WOS Keyword Plus: REACTIVE DISTILLATION COLUMN ; FIXED-BED ; DEHYDROGENATION ; CATALYSTS ; DESIGN ; FLOW ; PARTICLES ; REACTORS ; SYSTEM ; MODEL
Indexed Type: SCI
Funder: National Natural Science Foundation of China(51276181 ; National Basic Research Program of China(2011CB710705) ; 51476173)
Language: 英语
WOS ID: WOS:000370770300025
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Content Type: 期刊论文
URI: http://ir.etp.ac.cn/handle/311046/112362
Appears in Collections:中国科学院工程热物理所(论文库)_期刊论文(SCI)

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description.institution: 1.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Shandong Acad Sci, Energy Res Inst, Jinan 250014, Peoples R China
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