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DuffEng
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Join Date: Jan 2008
Posts: 3

HCl corrosion resistant Liquid ring vacuum pump needed...

01/10/2008 8:41 AM

Colleagues-

Does anyone know of a manufacturer of a HCl-resistant Liquid ring vacuum pumps? The materials of construction I'm looking for are a glass lined steel, ceramic, plastic, hastelloy, or inconel liquid ring impeller and pump housing. All of the suppliers I've talked to either mistakenly recommend a stainless steel pump (which from my consultant's experience for this exact application does NOT work) or cannot accomodate my request. I have a discontinued SIHI pump now that works beautifully, but I have nightmares what would happen should this pump fail. I do not require a high capacity pump, as the current pump I'm using is only 3hp.

Any leads would be greatly appreciated.
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mikey
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United States - Member - New Member Engineering Fields - Chemical Engineering - New Member Hobbies - Musician - New Member

Join Date: Jun 2006
Location: Wilmington, NC
Posts: 167
Good Answers: 4
#1

Re: HCl corrosion resistant Liquid ring vacuum pump needed...

01/10/2008 9:08 AM

Hi DuffEng,

Your consultant is correct - Chloride attacks stainless steels. I worked at a batch plant where we had 3 or 4 SIHI vacuum pumps. When we needed another one for a new process, we looked for used equipment. This may be a solution for you as there are a lot of used process equipment sellers out there. It may be that you could find another SIHI pump like the one you already have.

See:

http://www.fedequip.com/?gclid=CILypvXq65ACFTgrOAodGWYohg

http://www.lcec.com/?gclid=CJrVs63r65ACFTaEOAodFS8DiA

and there are many more...

Best Regards,

Mike

__________________
 "Blessed is the man who, having nothing to say, abstains from giving us wordy evidence of the fact." George Eliot [Mary Ann Evans] (1819-1880)
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Paddler
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Join Date: May 2007
Location: Sweet home Alabama
Posts: 144
Good Answers: 7
#2

Re: HCl corrosion resistant Liquid ring vacuum pump needed...

01/11/2008 6:34 PM

In a past life I used Nash liquid ring vacuum pumps with and without an eductor assist. The HCl was handled by using high alk well water and a modified- once through flush system. If it is somewhat steady state, you can add makeup water as fast as required by watching the outlet pH.

I hope that makes sense.

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