欢迎访问过程工程学报, 今天是

过程工程学报 ›› 2018, Vol. 18 ›› Issue (3): 503-508.DOI: 10.12034/j.issn.1009-606X.217328

• 反应与分离 • 上一篇    下一篇

旋转填料床中活性炭上间苯二酚的脱附行为及动力学

郭 芳， 刘有智*， 郭 强   

  1. 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
  • 收稿日期:2017-08-25 修回日期:2017-10-23 出版日期:2018-06-22 发布日期:2018-06-06
  • 通讯作者: 刘有智 lyzzhongxin@126.com
  • 基金资助:
    国家自然科学基金项目

Desorption Behavior and Kinetics of Resorcinol from Activated Carbon in Rotating Packed Bed

Fang GUO, Youzhi LIU*, Qiang GUO   

  1. Shanxi Province Key Laboratory of Higee-oriented Chemical Engineering, Research Center of Shanxi Province for High Gravity Chemical Engineering and Technology, North University of China, Taiyuan, Shanxi 030051, China
  • Received:2017-08-25 Revised:2017-10-23 Online:2018-06-22 Published:2018-06-06
  • Contact: LIU You-zhi lyzzhongxin@126.com

PDF

摘要： 以旋转填料床为脱附设备，采用准二级动力学模型研究了间苯二酚在活性炭上的脱附行为及动力学，并与传统固定床进行了对比. 结果表明，在温度20℃、液体流量50 L/h、超重力因子32.63及pH值11、脱附剂乙醇40wt%、脱附时间90 min的优化条件下，间苯二酚脱除率达93.90%，比传统固定床提高了58.54%，超重力强化了液固传质，对脱附有利；脱附速率常数随液体流量和超重力因子增大而增大，由以超纯水为脱附剂时的13.27×10?3 g/(mg?min)提高到以乙醇为脱附剂时的25.48×10?3 g/(mg?min).

关键词: 旋转填料床（RPB）, 间苯二酚, 活性炭, 乙醇, 脱附速率常数

Abstract: The desorption behavior and kinetics of resorcinol from activated carbon in rotating packed bed were studied by the pseudo-second-order kinetic model, compared with that in the traditional fixed bed. The optimal operation conditions were determined with temperature of 20℃, high gravity factor of 32.63, pH value of 11, flow rate of 50 L/h, desorption agent ethanol of 40wt% and desorption time of 90 min. In these case, desorption rate of resorcinol reached 93.90%. Compared with the fixed bed, desorption rate increased about 58.54% under the same operating conditions in rotating packed bed. The high gravity technology was beneficial to desorption performance by enhancing the mass transfer from liquid phase to solid phase. The desorption rate constant increased with the increased of flow rate and high gravity factor. In addition, the desorption rate constant improved from 13.27×10?3 g/(mg?min) with ultrapure water as desorption agent to 25.48×10?3 g/(mg?min) with ethanol as desorption agent.

Key words: rotating packed bed (RPB), resorcinol, activated carbon, ethanol, desorption rate constant