Original scientific paper
IMPROVING GASOLINE QUALITY BY REDUCING THE FCC GASOLINE SULPHUR CONTENT
Ivana Lukec
Darko Lukec
Nenad Prijić
Duško Mioč
Senad Bešić
Franjo Kusec
Slobodan Žakula
Abstract
Abstract
Gasoline obtained through the process of fluid catalytic cracking is one among the largest sources of sulphur in gasoline production of the Rijeka OIl Refinery. Currently applicable standards allow for maximum sulphur content of 150 ppm, whereas the standard applicable as of 2005 will allow for the maximum of 50 ppm of gasoline sulphur content. Since the construction of units resolving the problem of sulphur is at the refinery not expected before 2006, a group of the refinery’s experts has suggested a transitory solution through the use of the existing units for fractionation and desulphurization of FCC gasoline.
To this end, mathematical simulation models of the atmospheric distillation, unifining and HDS units have been set up. Researched and studied through simulation were the optimal operating conditions of the process, after which an optimal solution was suggested given the available process equipment, required capacities and required sulphur content reduction, as well as given the criteron of minimal loss of the gasoline octane number and the available volume of energents.
Keywords
sulfur content of motor gasoline; gasoline anti-knock index (RON+MON)/2; mathematical simulation model; heavy FCC gasoline hydrodesulfurization postreatment; heavy and middle FCC gasoline Unifining postreatment; light FCC naphta Merox posttreatment
Hrčak ID:
6968
URI
Publication date:
28.2.2005.
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