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›› 2017, Vol. 17 ›› Issue (1): 47-51.DOI: 10.12034/j.issn.1009-606X.216234CSTR: 32067.14.jproeng.216234

• 流动与传递 • 上一篇    下一篇

分层填料错流超重力装置传质性能

高亚洁1,袁志国1,刘有智2,刘慧军1,杜杰1,梁鹏飞1   

  1. 1. 中北大学超重力化工过程山西省重点实验室
    2. 中北大学山西省超重力化工工程技术研究中心，超重力化工过程山西省重点实验室
  • 收稿日期:2016-07-12 修回日期:2016-08-31 出版日期:2017-02-20 发布日期:2017-02-22
  • 通讯作者: 袁志国 ncityzg@163.com

Mass Transfer Performance of Layered Packing Cross-flow Rotating Packed Bed

GAO Ya-jie 1,YUAN Zhi-guo 2,LIU You-zhi 3,LIU Hui-jun 1,DU Jie 1,LIANG Peng-fei 1   

  1. 1. Shanxi Province Key Laboratory of Higee-Oriented Chemical Engineering
    2. Research Center of Shanxi Province for High Gravity Chemical Engineering and Technology
    3. Research Center of Shanxi Province for High Gravity Chemical Engineering and Technology, North University of China, Shanxi Province Key Laboratory of Higee-Oriented Chemical Engineering, Taiyuan
  • Received:2016-07-12 Revised:2016-08-31 Online:2017-02-20 Published:2017-02-22
  • Contact: YUAN Zhi-guo ncityzg@163.com

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被引次数

1

摘要： 采用气膜控制体系—NaOH溶液吸收气体中SO2，研究了超重力因子β、空床气速u、喷淋密度q等操作条件对装置的气相体积传质系数kyae的影响和强化效果，验证了分层填料错流超重力装置对气相传质的强化效果，优化了结构，以提高传质效率.结果表明，kyae随β, u和q增加而增加. 在β=55，u=1.53 m/s，q=3 m3/(m2?h)时，kyae可达28 s?1以上，是喷淋塔的10~75倍，单层错流旋转床的1.4~2.2倍，比分裂填料旋转床操作条件温和、设备结构简单、能耗更低. 本超重力装置能有效强化气膜控制传质过程.

关键词: 错流超重力装置, 分层填料, 传质, 气相传质系数, 二氧化硫

Abstract: In order to verify the intensification effect of LPC?RPB (Layered Packing Cross-flow Rotating Packed Bed) on gas-side mass transfer, optimize the device structure and improve the mass transfer efficiency, the gas-film limited system of the absorption process of SO2 by NaOH solution was applied in this work. The influence of high gravity factor β, empty bed gas velocity u and liquid spray density q on volumetric gas-phase mass transfer coefficients (kyae) and the intensification effect were investigated. The results indicated that the kyae values increased with the increase of β, u and q. Under the conditions of β=55, u=1.53 m/s and q=3 m3/(m2?h), kyae can reach 28 s?1, which is 10~75 times higher than the spray column and 1.4~2.2 times than the traditional cross-flow rotating packed bed. Besides, with the characteristics of milder operating conditions, simpler structure and lower energy consumption compared to SP?RPB (Split Packing Rotating Packed Bed), LPC?RPB showed a good performance of effectively intensifying the gas-film controlled mass transfer process.

Key words: cross-flow high gravity device, layered packing, mass transfer, gas-phase mass transfer coefficients, sulfur dioxide

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