CFD-PBE-PBE SIMULATION OF AN AIRLIFT LOOP CRYSTALLIZER
Li, Qian1,2; Cheng, Jingcai1; Yang, Chao1,2; Mao, Zai-Sha1
2018-06-01
发表期刊CANADIAN JOURNAL OF CHEMICAL ENGINEERING
ISSN0008-4034
卷号96期号:6页码:1382-1395
摘要A complete solver (CFD-PBE-PBE) for crystallization processes in an airlift loop crystallizer is developed in OpenFOAM (open-source field operation and manipulation) in this work. It combines computational fluid dynamics (CFD) with population balance equations (PBE) for both gas bubbles and crystals. Models for gas-liquid mass transfer and chemical reaction are included as well in the solver. PBE describing bubble coalescence and breakage is solved by the cell average method. Primary nucleation, secondary nucleation, and particle growth are considered in the PBE describing the crystallization process. The solver is validated with the formation of calcium carbonate via the reaction of CO2 with Ca(OH)(2) solution in an airlift reactor. Effects of the chemical enhancement factor and crystallization kinetics on predictions are systematically investigated. Variation of predicted pH value, concentration of Ca2+, mean particle size, and crystal size distribution (CSD) with time is in qualitative and semi-quantitative agreement with the published experimental data, when the appropriate crystallization kinetics are used. Effects of operation parameters such as initial concentration and superficial gas velocity are further numerically examined. The increase in superficial gas velocity results in the increasing consumption rates of OH-and Ca2+, while the particle diameter seems unchanged in the present simulation. A higher initial concentration of reactants will lead to a smaller particle diameter and a narrower CSD. The predicted results indicate that the developed solver is feasible, and can be used for the design and scale-up of airlift loop crystallizers.
关键词Population Balance Equation Airlift Loop Crystallizer Crystal Size Distribution Openfoam
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1002/cjce.23086
收录类别SCI
语种英语
关键词[WOS]BUBBLE-COLUMN REACTORS ; GAS-LIQUID PRECIPITATION ; CONTINUOUS STIRRED-TANK ; HIGH PHASE FRACTIONS ; POPULATION BALANCE ; CALCIUM-CARBONATE ; REACTIVE PRECIPITATION ; NUMERICAL SIMULATIONS ; BARIUM-SULFATE ; MASS-TRANSFER
WOS研究方向Engineering
WOS类目Engineering, Chemical
项目资助者Chinese Academy of Sciences(YZ201641) ; National Key Research and Development Program(2016YFB0301701) ; National Natural Science Foundation of China(21776284 ; Major National Scientific Instrument Development Project(21427814) ; Jiangsu National Synergetic Innovation Center for Advanced Materials ; CAS(QYZDJ-SSW-JSC030) ; 21476236)
WOS记录号WOS:000431508600017
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/24405
专题湿法冶金清洁生产技术国家工程实验室
作者单位1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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GB/T 7714
Li, Qian,Cheng, Jingcai,Yang, Chao,et al. CFD-PBE-PBE SIMULATION OF AN AIRLIFT LOOP CRYSTALLIZER[J]. CANADIAN JOURNAL OF CHEMICAL ENGINEERING,2018,96(6):1382-1395.
APA Li, Qian,Cheng, Jingcai,Yang, Chao,&Mao, Zai-Sha.(2018).CFD-PBE-PBE SIMULATION OF AN AIRLIFT LOOP CRYSTALLIZER.CANADIAN JOURNAL OF CHEMICAL ENGINEERING,96(6),1382-1395.
MLA Li, Qian,et al."CFD-PBE-PBE SIMULATION OF AN AIRLIFT LOOP CRYSTALLIZER".CANADIAN JOURNAL OF CHEMICAL ENGINEERING 96.6(2018):1382-1395.
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