Static Mixer 1

[samkhan]

Hi i am basically new in this site. As i saw this site i thought it is really very informative for the engineering problems which could be really helpfull for all of us. Mean while i have got a problem can anybody tell me how to measure the pressure drop in static mixer as i desperately need it because it is installed in the flow line.
Regards
Sam Khan
Chemical Process Engineer
U.K

 

[jmw]

Static mixers are very diverse in type function and manufacturer.
When you say "measure" it implies that you want to measure the actual pressure drop associated with your installed mixer and under process conditions and the answer would be simple, fit a dP transmitter.
If you meant you just wanted to know what the pressure drop is then you will find that you must refer back to the manufacturer who will have empirical data to help you.
Static mixers do give rise to quite high pressure drops which is why, when it becomes critical, alternative pipe mixing systems are chosen such as jet mixers.

JMW

http://www.ViscoAnalyser.com

 

[jamesbanda]

This is what i would do.

Get the manufacturers details from the item in the field. Get the physical properties of the fluids you have.
Access the static mixers makers web site and submit a question or see if they have all the info you need.

 

[Unotec]

Measure the pressure up and down stream, substract and there you go. Alternatively, do what jamesbanda is suggesting. You'll be surprised how much manufacturers are willing to help.

 

[unclesyd]

Here is some pressure drop data from one manufacturer. As stated above nearly all mfg have this information available.

http://www.komax.com/det-wwaseries.html

 

[itdepends]

Depending on his application I'd physically measure the pressure upstream and downstream rather than relying solely on manufacturers data tables- particularly if his static mixer is operating in a fouling stream (scale or solids in the liquid)