DESULFURIZATION OF DISLE ISFAHAN OIL REFINERY COMPANY BY POLYDIMETHYLSILOXANE, POLY ETHYLENE GLYCOL, POLYETHERSULFONE AND POLY ACRYL NITRILE NANOCOMPOSITES

Life Sciences-Chemistry

Abstract

In this research for fabricated the composite   membranes usage a blend of polymers that are comprised of PDMS (polydimethylsiloxane), PEG (poly ethylene glycol), PES (polyether sulfone) and PAN (poly acryl  nitrile)  with  crosslinking  TMOS  (tetramethyl  orthosilicate)  as crosslinking  agent  for  decrease sulphur of diesel Isfahan oil Refinery company. Total sulphur of diesel as feed to membrane module is 6380ppm. In the research, four kinds of membrane including PDMS, blend of PDMS with PEG, blend of PDMS with PES and blend of PDMS with PAN are used. The process variables in this research are pump pressure of membrane module (5-9 Bar), crosslinking agent consumption (1.5 and 3 wt. %), crosslinking temperature (65-85ċ) and crosslinking time (0.5-2.5 hours). According to the research, it is observed  that  by  increasing  pump  pressure,  crosslinking  agent  consumption  and  crosslinking temperature,  the  sulfur  content  of  retentate  stream  decreases  if  other  variables  remain  constant. However, the conditions are different for the crosslinking  time; when crosslinking  time increases from 0.5 hours to 1.5 hour, the sulfur content of retentate stream decreases but when the time increases to 1.5 hours and other variables remain constant, sulfur content increases.