Hydrodynamic studies in two - phase stirred fluidized bed with three types of impellers

IF 1 4区 工程技术 Q4 CHEMISTRY, APPLIED
N. Deepa, K. Saravanan
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引用次数: 1

Abstract

Fluidized beds are extensively used in petrochemical, chemical process industries, pharmaceutical, food and biotechnology industries. They are preferred to process materials with a wide range of particle size distribution and offer even temperature distribution and excellent heat and mass transfer. To improve the quality of the fluidized bed, mechanical stirring can be employed along with aeration. Hence, an attempt was made to study the hydrodynamics of stirred fluidized bed using air-water system. The characteristics of the fluidized bed can be well understood by studying its hydrodynamics. Pressure drop is one of the vital factors which affect the performance of fluidized bed. Hence, the effects of gas velocity and stirrer speed on pressure drop and power were studied for both stirred and unstirred bed conditions. It was observed that pressure drop and power increases with increase in gas velocity and stirrer speed. Also, the pressure drop and power are lower for the stirred bed condition than the unstirred bed condition.
三种叶轮两相搅拌流化床的流体力学研究
流化床广泛应用于石油化工、化工过程、制药、食品和生物技术等行业。它们优先用于加工粒度分布范围广、温度分布均匀、传热传质优良的材料。为提高流化床质量,可采用机械搅拌加曝气。因此,本文尝试用空气-水系统研究搅拌流化床的流体力学。通过对流化床流体力学的研究,可以更好地了解流化床的特性。压降是影响流化床性能的重要因素之一。因此,在搅拌床和未搅拌床条件下,研究了气速和搅拌速度对压降和功率的影响。随着气体速度和搅拌速度的增加,压降和功率也随之增加。搅拌床的压降和功率也比未搅拌床低。
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来源期刊
Chemical Industry & Chemical Engineering Quarterly
Chemical Industry & Chemical Engineering Quarterly CHEMISTRY, APPLIED-ENGINEERING, CHEMICAL
CiteScore
2.10
自引率
0.00%
发文量
24
审稿时长
3.3 months
期刊介绍: The Journal invites contributions to the following two main areas: • Applied Chemistry dealing with the application of basic chemical sciences to industry • Chemical Engineering dealing with the chemical and biochemical conversion of raw materials into different products as well as the design and operation of plants and equipment. The Journal welcomes contributions focused on: Chemical and Biochemical Engineering [...] Process Systems Engineering[...] Environmental Chemical and Process Engineering[...] Materials Synthesis and Processing[...] Food and Bioproducts Processing[...] Process Technology[...]
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