Yobbo
Mechanical
- Apr 22, 2003
- 85
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
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
