CIESC Journal

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超声波解吸柠檬酸盐溶液中二氧化硫的研究

薛娟琴; 孟令嫒; 沈彬彬; 杜士毅; 兰新哲   

  1. School of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-08-28 发布日期:2007-08-28
  • 通讯作者: 薛娟琴

Study on desorbing sulfur dioxide from citrate solution by ultrasonification

XUE Juanqin; MENG Ling’ai; SHEN Binbin; DU Shiyi; LAN Xinzhe   

  1. School of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-08-28 Published:2007-08-28
  • Contact: XUE Juanqin

摘要: Using a sonochemical reactor designed by the authors, the process of removing sulfur
dioxide from citrate solution simulating the flue gas desulfurization was studied. The
influence of ultrasonic frequency, ultrasonic power, reaction temperature, stirring speed,
inert gases, initial concentration of sulfur dioxide and concentration of citrate on the
efficiency of sulfur dioxide desorption, the stability of citrate solution and the
concentration of sulfate radical was examined systematically. By comparing the desorption
of sulfur dioxide with and without ultrasonification, it was concluded that (1) lower
ultrasonic frequency results in a better degassing efficiency; (2) the use of ul-
trasonification in desorbing sulfur dioxide from citrate solution improves the desorbing
efficiency in some condi-tions, without changing the essence of chemical reactions; (3)
sparging inert gas into the liquid can lower the vis-cosity of solution and the cavitating
threshold, and raise the desorption efficiency. These results demonstrate a technical way
for deep desorption of sulfur dioxide and provide the fundamental data for future
industrial disposal of sulfur dioxide.

关键词: flue gas desulphurization;desorption efficiency;ultrasonic degassing;citrate;acoustic cavitation

Abstract: Using a sonochemical reactor designed by the authors, the process of removing sulfur
dioxide from citrate solution simulating the flue gas desulfurization was studied. The
influence of ultrasonic frequency, ultrasonic power, reaction temperature, stirring speed,
inert gases, initial concentration of sulfur dioxide and concentration of citrate on the
efficiency of sulfur dioxide desorption, the stability of citrate solution and the
concentration of sulfate radical was examined systematically. By comparing the desorption
of sulfur dioxide with and without ultrasonification, it was concluded that (1) lower
ultrasonic frequency results in a better degassing efficiency; (2) the use of ul-
trasonification in desorbing sulfur dioxide from citrate solution improves the desorbing
efficiency in some condi-tions, without changing the essence of chemical reactions; (3)
sparging inert gas into the liquid can lower the vis-cosity of solution and the cavitating
threshold, and raise the desorption efficiency. These results demonstrate a technical way
for deep desorption of sulfur dioxide and provide the fundamental data for future
industrial disposal of sulfur dioxide.

Key words: flue gas desulphurization, desorption efficiency, ultrasonic degassing, citrate, acoustic cavitation