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Flow rate of pump

Flow rate of pump

Flow rate of pump

We are doing our PSM for the facility and the question came up about flow rates of our solvent pumps. All our pumps are rated below 80 gpm. This was done years ago and what I remember was that over 80 gpm will start to cause staic buildup in some of the solvents. My question is where can I find what the correct /safe flow rates for different solvents are.

RE: Flow rate of pump

I am not quite sure of what type of build-up you are talking about (could be my non- native english missing the point), but any buildup in a pump would probably be depending of flow conditions, which is again a result (function) of construction, speed and hence capacity - and contribution from pipeline construction, including valves, bends etc before and after the pump.

If you look at the pumps alone as the first step, the (or any good) pump supplier could give the answer if any other or new construction has the limitation you mention.

For existing pumps and pipelines you need to consider both pumps and pipelines, start with the original pump manufacturor.

RE: Flow rate of pump

Regarding the rheological characteristics of a solvent, you should ask the manufacturer of that solvent.

I don't know what static build-up is, but if the solvent is not Newtonian, then the flow rate will affect the viscosity of that solvent.

After you get the material specifications of the solvent, then it's a matter for a pipeline engineer


RE: Flow rate of pump

Thanks for your info. I think I found what I needed in the API Recommended Pratices 2003 6th Edition.
It gives a table with flow rates through schedule 40 pipe.
At 15ft/sec and 3ft/sec at what GPM not to exceed.
The 15 & 3 ft/sec flows are based upon the conductivity of the particular solvents being used.

Thanks again.  

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