Comparative study of mass transfer performance of different structured packings in rotating packed bed

doi:10.16085/j.issn.1000-6613.2016.03.014

Chemical Industry and Engineering Progree ›› 2016, Vol. 35 ›› Issue (03): 741-747.DOI: 10.16085/j.issn.1000-6613.2016.03.014

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Comparative study of mass transfer performance of different structured packings in rotating packed bed

GUO Qiang, QI Guisheng, LIU Youzhi, DONG Meiying, SONG Bin, WANG Tan

Research Center of Shanxi Province for High Gravity Chemical Engineering and Technology, Shanxi Province Key Laboratory of Higee-oriented Chemical Engineering, North University of China, Taiyuan 030051, Shanxi, China

Received:2015-08-11 Revised:2015-09-18 Online:2016-03-05 Published:2016-03-05

不同规整填料旋转床的传质性能对比

郭强, 祁贵生, 刘有智, 董梅英, 宋彬, 王探

中北大学超重力化工过程山西省重点实验室, 山西省超重力化工工程技术研究中心, 山西太原 030051

通讯作者: 祁贵生,教授。E-mail:zbdxggs@126.com
作者简介:郭强(1988-),男,硕士研究生。E-mail:zbdxgq@163.com
基金资助:
国家自然科学基金(21376229)、山西省科技攻关计划(工业)(20130321035-02)及山西省高等学校科技创新项目(2013128)

Abstract

Abstract: Mass transfer performance of cross-current rotating packing bed with metallic wire structured packing and novel plastic structured packing respectively was investigated using Na₂CO₃- H₂S as absorption system. The effects of liquid flow,gas-liquid ratio,and high-gravity factor on desulfurization rate and gas phase mass transfer coefficient were studied by theoretical derivation of expressions of gas-liquid mass transfer coefficients K_y and K_ya. Desulfurization rate of wire packing bed was 3%-4% higher than novel plastic packing bed under the same conditions,but K_y,K_ya and pressure drop were 0.25-0.5、0.8-0.9 and 0.3-0.5 times of novel plastic packing bed. K_ya of novel plastic packing bed was 1.45 times higher than that of bulk wire packing bed under similar working condition. Correlation of K_y,K_ya and gas phase Reynolds numbers Re_G,liquid phase Weber number We_L,Galileo number Ga was obtained by regression of experiment data.

Key words: rotating packed bed, fillers, desulfurization rate, gas overall mass transfer coefficient

摘要： 采用Na₂CO₃-H₂S为体系,利用规整丝网填料和新型塑料填料的错流旋转床为吸收设备,探究了两种填料床的传质性能,通过理论推导气液传质系数K_y和K_ya的表达式,考察了液量、气液比、超重力因子对脱硫率、K_y和K_ya的影响。实验结果表明:在相同条件下,规整丝网填料床的脱硫率略高于新型塑料填料床,约为3%～4%,但K_y、K_ya和压降分别是新型塑料填料床的0.25～0.5、0.8～0.9和0.3～0.5倍。通过文献对比分析,在相近工况条件下,新型塑料填料床的K_ya比散装丝网填料床提高了1.45倍。并对实验数据进行回归,拟合出K_y、K_ya与气相雷诺数Re_G、液相韦伯数We_L和伽利略数Ga之间的关联式。

关键词: 旋转填料床, 填料, 脱硫率, 气相传质系数

CLC Number:

TQ202

GUO Qiang, QI Guisheng, LIU Youzhi, DONG Meiying, SONG Bin, WANG Tan. Comparative study of mass transfer performance of different structured packings in rotating packed bed[J]. Chemical Industry and Engineering Progree, 2016, 35(03): 741-747.

郭强, 祁贵生, 刘有智, 董梅英, 宋彬, 王探. 不同规整填料旋转床的传质性能对比[J]. 化工进展, 2016, 35(03): 741-747.

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Comparative study of mass transfer performance of different structured packings in rotating packed bed

不同规整填料旋转床的传质性能对比

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