removing mercaptans

I'm just starting a project about removing mercaptans (methyl, ethyl et propyle mercaptans) from Wite-spirit using fixed-bed adsorption. I realy need information about this subject ( adsorption isotherm, breakthrow curves, optimal temperature and pression, the best analytical method ...)

 

[phex]

not much work has been done in this area of interest. we had a study about desulf processes recently and came up with only a handful of processes working by this principle. most advanced of those is the ConocoPhillips S-Zorb. try to find some info about that one, i'm sure this will help.

hth,
chris

 

[Hookem]

Look at activated carbon. Recently looked at many methods of removing mercaptans from a sweet natural gas stream. We selected this method. I recall a few sizing criteria, such as face velocity (actual conditions), residence time, and lbs of carbon consumed per million cubic feet. After bed was expended, the stuff is vacuumed out and regenerated offsite. We looked at Norit and Calgon. Advise if you need any more info.

chesney@uei-houston.com

 

[jxdcompaq]

We use a series of fix bed media to treat our tail gas which contains mercaptans and H2S. The primary absorption media is Potassium Permanganate followed by a polishing filter consisting of Sulfa-Treat(activated carbon) material. Our system consist of 2 parallel permanganate filters to allow for change-outs and regeneration off-site.

Good luck,
Joel

 

[jcot]

We had a caustic treatment for LPG to reduce from 6000 wppm of methyl, ethyl and propyl mercaptan to less than 5 wppm of total sulfur compounds. Get in touch with Merichem, they will help you in this problems.
jcot

 

[dcasto]

We have used Puraspec.

http://www.synetix.com/refineries/products-main.htm