Pipeline: max. allowable suspended solids

[shahyar]

I know it depends of bunch of things, but is there a thumb rule which says: if your suspended solid is more than xx ppm, it is better to remove it (by bag filter etc.) before sending it through pipeline?
Pipeline is on a hill and slurry is in worst case 1% or 10,000 ppm.


Thanks

 

[gr2vessels]

One suggested rule of thumb;-if you can afford it to replace the piping every so often, then leave it, don't bother. If you got little money for maintenance, buy the filter upfront investment. Trivial, isn't it?
The slury should go in a mining hose, not pipe, to minimize the erosion losses. However, you can opt for a cladded pipe with extra-strong corrosion/erosion resistant material, it all depends on the depth of your pocket...Also, will the solids sediment in bends, crevices or low velocity sections? This could change the whole rule and thumb all together.
cheers,
gr2vessels

 

[bimr]

The rule of thumb would be if your pipeline velocity is less than 2 ft/sec, your solids will settle out in the pipeline.

 

[shahyar]

Thanks for all replies.
I found the answer in a book. If the intention is transfering liquid and not solid, TSS should be kept under 100 ppm for particles with density around 1300 to 1500 kg/m3, to have homogenous flow(there is a curve).Having heterogenous flow is not good.