[b]175 Deg C Sulphuric acid mag driven pump[/b]
[b]175 Deg C Sulphuric acid mag driven pump[/b]
(OP)
Dear Friends
I have a Si-iron pump handling said 68% to 72% Concentrated H2SO4(containing traces of NItric acid - max 6% by vol) in Nitric acid concentration plant; the available useful life of costly Si-iron pumps( M/s Friatec Rhineuhttte, Germany) is hardly 2 years.
I'm looking for a better sealless , preferably mag-drive, pump of proven track record (for identical application of fluid / temp) so that plant area is not spoilt, pump maint cost is not going high , and reliability is raised substantially. (Flow: 16 m3/hr, 25 Meter liq. head, NPSHA - 1.8 meter, 1450 rpm, 50 hz, 415 V VFD motor currently running bet'n 45 to 65 Hz freq, @1300 to 1900 RPM)
Can any friend help me !
Y B Gandhi
I have a Si-iron pump handling said 68% to 72% Concentrated H2SO4(containing traces of NItric acid - max 6% by vol) in Nitric acid concentration plant; the available useful life of costly Si-iron pumps( M/s Friatec Rhineuhttte, Germany) is hardly 2 years.
I'm looking for a better sealless , preferably mag-drive, pump of proven track record (for identical application of fluid / temp) so that plant area is not spoilt, pump maint cost is not going high , and reliability is raised substantially. (Flow: 16 m3/hr, 25 Meter liq. head, NPSHA - 1.8 meter, 1450 rpm, 50 hz, 415 V VFD motor currently running bet'n 45 to 65 Hz freq, @1300 to 1900 RPM)
Can any friend help me !
Y B Gandhi





RE: [b]175 Deg C Sulphuric acid mag driven pump[/b]
Roy Gariepy
Maintenance and Reliability Dept.
Dorlastan Fibers LLC.
Goose Creek, South Carolina USA
RE: [b]175 Deg C Sulphuric acid mag driven pump[/b]
You r certainly right for using glasslined parts; would request more information /details of available source. We have Pfaudler parts esp. plant equipments like column,exchangers(with Tantalum tube bundles & MSGL shells).
Failures originate with gland leakage and then corodes base, outer CI casing and then fitment is lost progressively. Wetted parts are from Si-iron.
Hope it will give you some more idea !
Y B Gandhi
RE: [b]175 Deg C Sulphuric acid mag driven pump[/b]
Your concentration of H2SO4 is more corrosive than our typical 93-98%. I thought the Si-iron like Z-Corr was not rated for service in less than 88%.
RE: [b]175 Deg C Sulphuric acid mag driven pump[/b]
http://www.dickow.de/
I have good experience with the ordinary pumps - but they should be among the best to magnetic pumps.
I think they also have a branch in the US if you are from "over there...
Best regards
Morten
RE: [b]175 Deg C Sulphuric acid mag driven pump[/b]
thanks for yr feedback! have written to Dickow. As regards to BRT549's suggestion for Wilfley, I shall chk for suitable MOC availability with'em.
YBG58