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Alternative for side channel pump with abrasive medium?

Alternative for side channel pump with abrasive medium?

Alternative for side channel pump with abrasive medium?

(OP)
L.S.,

I am confronted with a situation, where low flow has to be combined with a rather high discharge head. A side channel pump would be the right thing for this were it not that the condensate (the medium involved) is polluted with a certain concentration of magnetite particles. Those particles have shown to be of destructive nature for a Schroedahl Bypass valve and the side channel pump involved shows wearing in the pump house at the location of the impellers. To be more concrete, the required flow is about 5 to 6 m3/h, where the discharge head at this working point should be more than 240 mlc. I haven't found an equal alternative for this pump that can manage the process requirements and handle the abrasive magnetite particles as well. Should I extend my scope of possibilities to some kind of rotary displacement pump or is there some other type of pump that is able to fullfill the requirements?
As far as low flow protection is concerned I would also like to know whether there are robust solutions in combination with abrasive fluids. Or should I just stick to the good old orifice and accept a certain extra energy loss?
I am having the particle size distribution as well as the chemical formula analysed.

I would be grateful to get some usefull hints.

 

Karel Postulart, The Netherlands
Nuon Power Generation

RE: Alternative for side channel pump with abrasive medium?

You may want to look at Progresive cavity pump.It is possible for the required pressure but will be a very long pump..

RE: Alternative for side channel pump with abrasive medium?

Have you considered the use of a magnetic filter?

RE: Alternative for side channel pump with abrasive medium?

Forget a rotary displacement pump. It will wear out quickly due to the head and the particles. A piston diaphragm can esily handle both, flow and pressure. And the particles are not a problem neither. You are from Netherlands? GEHO should not be far away from where you are but the flow might be too low for their pumps. They belong to the Weir Group and Warman is another Weir branch. They manufacture centrifugal pumps for mining applications (abrasive slurries). But I do not know if flow and head fit to their program. Abel Pumps is another alternative for piston diaphragm pumps.

RE: Alternative for side channel pump with abrasive medium?

piston diaphragm pump or progessive cavity pump.

"Sharing knowledge is the way to immortality"
His Holiness the Dalai Lama.

http://waterhammer.hopout.com.au/

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