Specifics of ultrasonic disperser

GlobeCore develops and manufactures state of the art systems for production of bitumen emulsions and other dispersion systems. The most efficient devices are colloid mills, which can both disperse and homogenize raw materials.

However, the main element of any atomization device is the disperser. It is the process of dispersion (before homogenation), which allows to form a highly stable dispersion system. The process of dispersion involves mechanical atomization of emulsification of raw material, which depends on the composition of the material and the application.

Depending on the application type, dispersers can be of several types. Principle of operation divides dispersers into several categories: cavitation, rotor-stator and high pressure dispersers. Cavitation dispersers are quite popular. These are designed for atomization of material by reduction of pressure below a critical level, i.e. by cavitation. The process can be initiated either by hydraulic shocks or by ultrasonic impulses. The latter method, specifically, the disintegration of raw material by ultrasonic pulses, is referred to as acoustic cavitation. This process occurs in ultrasonic disperser (USG), which is also called “acoustic disperser”.

Disperser can also be inline or submerged. One of the most widely spread inline flow devices is the ultrasonic disperser for flow or circulation homogenization. This effect is desired in production of stable water-fuel emulsions for diesel engines and furnaces, for primary crude oil processing, as well as production of high quality drill fluid. A flow type USG is widely used in food production for homogenization of milk, pasteurizing or water, juices and other liquid products. Ultrasonic homogenizer is used in pharmaceutical industry for production of highly dispersed emulsions and suspensions.

An ultrasonic disperser creates a highly intensive ultrasonic field in a resonance chamber. The material in such disperser is subjected to multiple cavitation treatment with the passing acoustic waves.

обновлено: March 25, 2014 автором: globecore