Ultrasonic Degassing

Degassing is removal of gases contained in a liquid, both dissolved and present in the form of bubbles. There several methods for removal of gases from liquid based on different physical effects. One of the best methods is ultrasonic degassing, i.e. gases removal due to liquid treatment by acoustic vibrations in the ultrasonic range. This method is good due to low low power required and high efficiency.

The mechanism of ultrasonic degassing is admittedly based on the fact that liquids always contain nuclear stable bubbles of gas inside and on the the surface microparticles suspended in liquid. As affected by intense microflows generated in the liquid by ultrasound, vibrating bubbles begin increasing due to co-opting gases dissolved in the liquid. As increased to a definite size, bubbles float to the liquid surface, which is promoted by increased upward force due to ultrasonic pressure, and extract from it.

Two modes of ultrasonic degassing are distinguished: cavitation and pre-cavitation. From positions of degassing depth and rate, the cavitation method is more effective, but it requires large-sized, water-cooled ultrasonic transducers, with electric power consumption reaching 10kW per transducer. The pre-cavitation method of degassing with the help of «Acoustic-T» device is implemented by non-cooled ultrasonic transducers with power consumption of just 0.1kW per transducer. By treatment time and residual gas concentration in the liquid, the pre-cavitation mode is slightly behind the cavitation mode, but it requires expenses for both the equipment and operation 100-fold lower! For instance, a single «Acoustic-T4» device is enough for making potable water from a cubic meter of water saturated with methane foe, at most, a couple of minutes.

There is a great variety of liquids and problems in science and technology, where ultrasonic degassing will be the best solution. It is not possible to describe the entire scope of application of «Acoustic-T» acoustic devices and various methods of ultrasound delivery to liquid in a short article. Write us and we will help you in choosing the optimum cost effective version of ultrasonic degassing using «Acoustic-T» acoustic devices.