liquid circulation vacuum pump
liquid circulation vacuum pump
(OP)
We are using liquid ring vacuum pump to create vacuum in few reactor. In order to reduce the water consumption, we recycle the water. The problem we have is that solvent, beiong soluble in water, accumulate in the water. This can build up to 40%.
I was wondering if there was any way of replacing water by another liquid for which the solubilty of solvent will be very low.
I heard about using H2SO4 (no corrrosion if concentrate) but we will have water coming from the reactors, therefor it will turn into a very corrosive solution.
Does any one got a solution? We don't want to change to dry vacuum pump (cost).
Thanks
I was wondering if there was any way of replacing water by another liquid for which the solubilty of solvent will be very low.
I heard about using H2SO4 (no corrrosion if concentrate) but we will have water coming from the reactors, therefor it will turn into a very corrosive solution.
Does any one got a solution? We don't want to change to dry vacuum pump (cost).
Thanks





RE: liquid circulation vacuum pump
Regards
RE: liquid circulation vacuum pump
which kind of solvents are you using? the easiest would be to use the solvent as recirculated seal liquid? H2SO4 is definitively not a good idea if you condense water in the pump. Glycol or thermal oils are sometime used as seal liquid.
Torricelli
www.vacuum-guide.com
RE: liquid circulation vacuum pump
IPA, MeOH, IMS, Hexane, Toluene, Heptane, Dichloromethane, Xylene, Acetone, Butanol, Ethyl acetate, THF.
That's only to name the most commonly used.
I read about using oil, but i am afraid of the mixture with water (bad memories of blowing a head gasket on my car!)
RE: liquid circulation vacuum pump
RE: liquid circulation vacuum pump
RE: liquid circulation vacuum pump
Torricelli
www.vacuum-guide.com
RE: liquid circulation vacuum pump
I was tempting by the solution with the oil, but I am a bit afraid that it might be decompose by some solvent (THF in particular).
RE: liquid circulation vacuum pump
RE: liquid circulation vacuum pump
RE: liquid circulation vacuum pump
Does anyone know second hand dealer with good prices on dry vacuum pump??
Thanks all of you anyway!
RE: liquid circulation vacuum pump
RE: liquid circulation vacuum pump
At the moment we are operating two liquid ring vacuum pump of 5.5kw each
RE: liquid circulation vacuum pump
RE: liquid circulation vacuum pump
hope it helps, regards
Torricelli
www.vacuum-guide.com
RE: liquid circulation vacuum pump
www.sterlingfluidsystems.com/art/ procam/pdf/FundamentalsRev1.pdf
http://www.sterlingfluidsystems.com/
RE: liquid circulation vacuum pump
Overall I would suggest to go for a dry system as the lifetime cost will be less.
RE: liquid circulation vacuum pump