超声波作用下柠檬酸盐溶液中SO_2的解吸机理  

Mechanism of SO_2 ultrasonic desorption from citrate solution

作　　者：薛娟琴[1] 兰新哲[1] 杜士毅[1] 李伟达[1] 孟令嫒[1] 

机构地区：[1]西安建筑科技大学冶金工程学院,陕西西安710055

出　　处：《化工学报》2007年第4期944-950,共7页CIESC Journal

基　　金：国家自然科学基金项目(50244012);陕西省产业化项目(02JC37)~~

摘　　要：The mechanism of ultrasonic desorption of sulfur dioxide from citrate solution was investigated mathematically based on the characteristics of ultrasonic wave.The factors influencing ultrasonic desorption of sulfur dioxide were discussed theoretically and the mechanism was verified by experiments.The results showed that it was feasible to remove sulfur dioxide from citrate solution with ultrasonic field in theory and on the laboratory scale.There was a greater effect of ultrasonic frequency and gas content in solution as well as solution properties on sulfur dioxide desorption.The sulfur dioxide desorption efficiency could be improved rapidly by introducing cavitation bubble nucleus,such as adding trace argon gas.A lower ultrasonic frequency might result in higher desorption efficiency.Giving a proper stirring to the solution,the SO2 desorption efficiency enhancement could be increased by 20%—30% over the control value.The higher the initial concentration of sulfur dioxide in citrate,the higher the desorption efficiency.The mechanism of ultrasonic desorption mathematically based on the characteristics of of sulfur dioxide from citrate solution was investigated ultrasonic wave. The factors influencing ultrasonic desorption of sulfur dioxide were discussed theoretically and the mechanism was verified by experiments. The results showed that it was feasible to remove sulfur dioxide from citrate solution with ultrasonic field in theory and on the laboratory scale. There was a greater effect of ultrasonic frequency and gas content in solution as well as solution properties on sulfur dioxide desorption. The sulfur dioxide desorption efficiency could be improved rapidly by introducing cavitation bubble nucleus, such as adding trace argon gas. A lower ultrasonic frequency might result in higher desorption efficiency. Giving a proper stirring to the solution, the SO2 desorption efficiency enhancement could be increased by 20%-30% over the control value. The higher the initial concentration of sulfur dioxide in citrate , the higher the desorption efficiency.

关 键 词：超声作用 SO2解吸 机理研究 超声化学 

分 类 号：O644.3[理学—物理化学]