1 reply to this topic

[shvet1]

Hello everybody

 

Currently we are looking for options to replace conventional static mixer with ultrasound mixer ~30kHz. We are going to mix ~30m3/h of gasoil with water-based stream 24/7 (continuous operation) in range from 50:1 to 100:1.

Does anyone have experience with these? Is there any risk of induced vibration? Is only bath operation possible? How to estimate power consumption? Any links will be appreciated.

[MikeCH]

They work great in the lab but scale-up is limited. Today, the max. power per unit is 10-15 kW. If you need more power, you have to install multiple units and install proper controls to split your flows. In the past, I have always rejected the US mixers for cost reasons

 

In operation, wear from cavitation is an issue and if you have solids in your product, the sonotrode is gone within no time. Vibrations are not so critical as long as you don't put your hands on the equipment. But you need proper sound dampening measures.

 

I've got a 1 kW unit in my lab for process development. Main use is to reproduce what I get from the research lab. That is then the benchmark to develop a process based on more robust and efficient equipment. If a well engineered static mixer is not efficient anymore I personally prefer dynamic mixers.

 

 

Cheers,

Michael