Pump suction Ozone injection

[Cere10]

Good day,

Does anyone know how to calculate the %vol. of air (ozone) in a centrifugal pump? Condition is as follows:

10SCFM of Ozone to be introduce into the suction side of a 4X6X13 ANSI centrifugal pump. Pump is operating at 900GPM@45PSI. I trying to determine if it is advisable to add 10SCFM of ozone to the inlet without harming the pump.

Regards,

 

[checman]

Cere10: Because liquids are for practical purposes not compressible and gasses are, the volume of the gas would depend on the pressure of the liquid less whatever may have dissolved in the liquid which is temperature and pressure dependant. If the suction pressure is 0 psig you would be adding just over 8% in volume to your product being pumped. You would probably vapor lock most end suction pumps, how fast and how often would depend on the velocity of the liquid going through the pump and the piping layout. Why cant you inject on the discharge side? If it’s a pressure issue you might be able to introduce it through a venturi.

Regards checman

 

[Torricelli]

If you introduce O3 (or an O2/O3 mixture?) into a pump, an important issue will be the selection of corrosion resistant materials and seals.

ET

http://www.vacuum-guide.com

 

[unclesyd]

We went in on the discharge side of the pumps. We used a mixer to get intimate contact.

http://www.komax.com/gen-ozonemixer.htm

 

[Cere10]

Thank you everyone for your input, it's been very helpful.

 

[Stresfree1]

I have seen gas injection on the suction side of a centrifugal pump before - would not recommend doing that again. I like Checman's idea of a venturi, but on the discharge of the pump. It can be a small venturi (in a sidestream - then remix back into the main flow) to keep from buying a big one for the full flow.