超声波H_2O_2在线式浓度计的研制  

DEVELOPMENT OF ON-LINE ULTRASONIC H_2O_2 CONCENTRATION METER

作　　者：王寅观[1] 杨海涛[1] 孙庆德[1] 蒋勇[1] 钟斐晖[1] 

机构地区：[1]同济大学声学研究所,上海200092

出　　处：《化工学报》2001年第2期158-161,共4页CIESC Journal

摘　　要：In this paper, an on-line ultrasonic H 2O 2 concentration meter operating according to the relationship between the concentration, temperature and ultrasonic velocity in H 2O 2 solution is introduced. The ultrasonic velocities in H 2O 2 solution are measured at different concentrations and temperatures.The velocity-concentration coefficients and velocity-temperature coefficients of H 2O 2 solution are calculated. In the on-line ultrasonic H 2O 2 concentration meter, the ultrasonic transducer installed outside the H 2O 2 solution pipeline generates an ultrasonic wave pulse. The ultrasonic wave travels through the pipeline of H 2O 2 solution. The computer transfers the ultrasonic travel time into ultrasonic velocity. The platinum resister is installed inside the H 2O 2 solution pipeline. The resistor variation caused by temperature is sent to the computer through the interface. The computer calculates the ultrasonic velocity and H 2O 2 temperature by means of velocity-concentration coefficients and velocity-temperature coefficients. It displays and prints the value of the instant H 2O 2 solution concentration, and meantime displays the 8 hour curve for H 2O 2 solution concentration variation in the screen. It also can give alarm and output a 4—20 mA analogue signal for automatic control in the production process.In this paper, an on-line ultrasonic H 2O 2 concentration meter operating according to the relationship between the concentration, temperature and ultrasonic velocity in H 2O 2 solution is introduced. The ultrasonic velocities in H 2O 2 solution are measured at different concentrations and temperatures.The velocity-concentration coefficients and velocity-temperature coefficients of H 2O 2 solution are calculated. In the on-line ultrasonic H 2O 2 concentration meter, the ultrasonic transducer installed outside the H 2O 2 solution pipeline generates an ultrasonic wave pulse. The ultrasonic wave travels through the pipeline of H 2O 2 solution. The computer transfers the ultrasonic travel time into ultrasonic velocity. The platinum resister is installed inside the H 2O 2 solution pipeline. The resistor variation caused by temperature is sent to the computer through the interface. The computer calculates the ultrasonic velocity and H 2O 2 temperature by means of velocity-concentration coefficients and velocity-temperature coefficients. It displays and prints the value of the instant H 2O 2 solution concentration, and meantime displays the 8 hour curve for H 2O 2 solution concentration variation in the screen. It also can give alarm and output a 4—20 mA analogue signal for automatic control in the production process.

关 键 词：超声波 双氧水 浓度 在线检测 过氧化氢 浓度计 

分 类 号：TQ123.6[化学工程—无机化工]