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烟气膜吸收法脱除SO_2的超声波强化处理

薛娟琴;兰新哲;王召启;孟令嫒

  A new flue gas desulphurization (FGD) technology was developed to absorb SO2 by using citrate solution as absorbing agent, with hollow fiber membrane and ultrasonic enhancement.Ultrasonic treatment and membrane technology were introduced into the process of FGD.Ultrasonic cavitation and its enhancement of the mass transfer process were discussed.By using the self-designed reactor,the effects of ultrasonic treatment on the stability of citrate solution and hollow fiber membrane for FGD were studied.The results showed that under the condition of frequency 20 kHz, citrate concentration 0.5 mol·L-1 and pH 4.5, the absorption of sulfur dioxide from flue gas in the hollow fiber membrane module could be enhanced by ultrasonic treatment, but the solution could be heated up,which caused inhibition of absorption.In the process of ultrasonic treatment,citrate solution and hollow fiber membrane remained stable.……   
[关键词]:超声波;膜吸收;烟气脱硫;柠檬酸盐缓冲溶液;二氧化硫
[文献类型]:期刊
[文献出处]: 《化工学报2007年03期
[格式]:PDF原版; EPUB自适应版(需下载客户端)