Is sulfur erosive on a pump

[mrporfi]

I have gasoline with 3661ppmw (0.36%) of sulfur at 38degrees C.
Can somebody advise me if this concentration can actually damage my wear rings/faces.
I've read gasoline can be eventually sold at 500ppm... but more than 7 times this concentration!!! hummm!!!
What kind of measures do I have to take, from the pump constructive point of view.

Thanks

 

[BigInch]

Sulfur + water = sulfuric acid. There is often enough water running around in pipelines and tanks to cause considerable trouble if sulfur is present. I think you qualify. I sure wouldn't want to deal with that quantity in my gasoline. Lots of blending, assuming you could find a better source. Might be better to get it out some other way.

Serch Eng-Tips to find more threads like this,

http://eng-tips.com/viewthread.cfm?qid=264566&page=2

Material Compatibility with < 10% sulfuric acid
304 stainless steel D-Severe Effect
316 stainless steel B-Good
ABS plastic B-Good
Acetal (Delrinr) D-Severe Effect
Aluminum D-Severe Effect
Brass N/A
Bronze B-Good
Buna N (Nitrile) A-Excellent
Carbon graphite A-Excellent
Carbon Steel D-Severe Effect
Carpenter 20 D-Severe Effect
Cast iron C-Fair
Ceramic Al203 A-Excellent
Ceramic magnet N/A
ChemRaz (FFKM) A-Excellent
Copper N/A
CPVC A-Excellent
EPDM A-Excellent
Epoxy A-Excellent
Fluorocarbon (FKM) A-Excellent
Hastelloy-Cr B-Good
Hypalonr A-Excellent
Hytrelr A-Excellent
Kalrez A-Excellent
Kel-Fr A-Excellent
LDPE A-Excellent
Natural rubber A-Excellent
Neoprene B-Good
NORYLr A-Excellent
Nylon C-Fair
Polycarbonate A-Excellent
Polyetherether Ketone (PEEK) A-Excellent
Polypropylene A-Excellent
Polyurethane D-Severe Effect
PPS (Ryton®) A-Excellent
PTFE A-Excellent
PVC A-Excellent
PVDF (Kynar®) A-Excellent
Silicone C-Fair
Titanium D-Severe Effect
Tygonr B-Good
Vitonr A-Excellent


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[rmw]

I don't know if it has any bearing on your situation, but when the Sulphur was removed from automotive diesel, lubricant additive packages had to be added to the fuel to make up for the loss of the anti friction characteristics of the fuel.

Modern pumps have been redesigned to design around the lack of sulphur lubrication. But early on......

rmw