Further to aybee's thread. I have had very good experience with Gayeso Refracto-pad thermocouples in oil refinery crude and vacuum furnace skin-point service.
www.gayesco.com
In an upgrading refinerey "optimizing" HVGO cut-point does not necessarily mean "maximizing" it.
Cutting deeper into the resid mean the marginal bbl of HVGO recovered is much poorer quality than the average quality of the HVGO stream.
The marginal value of this stream needs...
You're right! Organic sulphur compounds, such as mercaptans, do decompose to H2S in HDS reactors. But ...
You may be experiencing "recombination" reactions where H2S and olefinic material recombine in the effluent of a HDS to form RSH (mercaptan). This is quite common in naphtha...
There is a downloadable database of failure rate data available at the following site ...
http://www.saunalahti.fi/ility/
The database includes data on check valves (and usefully contains reference source for most of the data).
Depending on suction and discharge conditions you may want to consider a Liquid Ring Vacuum Pump.
These are centrifugal, relatively low head, machines suitable for 'pumping' wet gases.
There are plenty of manufactures who offer this type of machine. Search on google.com for 'liquid ring vaccum...
On this side of the pond much of the standard chemical engineering course is covered by Coulson & Richardson's Chemical Engineering vols 1-6 (vols 4&5 are q&a).<br><br>I also found Levenspiels Chemical Recation Engineering particularly useful.<br><br>kaypeegee<br>UK
The EPA also provide a TANKS program that calculates emmissions from tanks.<br><br>The program is free and available at<br><br><A HREF="http://www.epa.gov/ttn/chief/tanks.html" TARGET="_new">www.epa.gov/ttn/chief/tanks.html</A>.<br><br>It's not a spread sheet but does come with complete...
