超声波频率对HCFC-141b水合物结晶过程的影响研究  

Influences of ultrasonic waves frequencies on HCFC-141b hydrate crystallization process

作　　者：刘永红[1] 郭开华[1] 

机构地区：[1]中山大学物理科学与工程技术学院,广东广州510075

出　　处：《哈尔滨工业大学学报》2005年第5期633-635,共3页Journal of Harbin Institute of Technology

基　　金：国家自然科学基金重点资助项目(59836230).

摘　　要：研究了超声波频率对HCFC-141b(1,1-dichloro-1-fluoroethane)水合物结晶过程的影响,结果表明:超声波能有效改善水合物的结晶;频率f一定时,ti与功率密度Pd成反比,Mf、nfh和Va与Pd成正比;当Pd<750W/cm2时,15kHz的超声波作用下的Mf、nfh和Va高于20kHz的超声波作用下的数值,而750W/cm2<Pd<937.5W/cm2时,结果相反;当Pd<625W/cm2时,15kHz的超声波作用下的ti明显比20kHz的超声波作用下的ti短,而当625W/cm-2<Pd<937.5W/cm2时,两者的ti相差不大.The influences of ultrasonic waves frequencies on HCFC-141b (1,1-dichloro-1-fluoroethane) hydrate crystallization have been studied. The results showed that ultrasonic wave could improve the hydrate crystallization process effectively. As frequency is set, ti is in inverse proportion to the intensity of input power (Pd), while Mf, nfh and Va is in proportion to Pd. When Pd 2, Mf, nfh and Va with 15 kHz ultrasonic wave is greater than those of with 20 kHz. However, the result is inverse for 750 W/cm2 d 2. Furthermore, for Pd -2 d 2, the change of ti for both frequencies are not much.

关 键 词：超声波 HCFC-141b水合物 结晶 

分 类 号：TQ026.7[化学工程]