RECENT TRENDS IN THE CLEANING OF DIESEL FUELS VIA DESULFURIZATION PROCESSES | ||
| The International Conference on Chemical and Environmental Engineering | ||
| Article 13, Volume 4, 4th International Conference On Chemical & Environmental Engineering, May 2008, Pages 221-249 PDF (1.52 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/iccee.2008.38388 | ||
| Authors | ||
| S. A. HANAFI; M. S. MOHAMED | ||
| Egyptian Petroleum Research Institute(EPRI), Nasr City, Cairo. | ||
| Abstract | ||
| ABSTRACT This paper is a selective review of new approaches and emerging technologies for ultra-clean (ultra-low sulfur) diesel fuels. The issues of diesel deep desulfurization are becoming more serious because some crude oils are higher in sulfur contents, while the regulated sulfur limits are becoming lower and lower. Deep reduction of diesel sulfur (from 500 to < 15 ppmw sulfur) is dictated largely by 4,6-dimethyldibenzothiophene, which represents the least reactive sulfur compound that have substitutions on both 4- and 6- positions. The deep HDS problem of diesel streams is exacerbated by the inhibiting effects of co-existing polyaromatics and nitrogen compounds in the feed as well as, H2S in the product. New and more effective approaches and continuing catalysis and processing researches are needed for producing affordable ultra-clean diesel fuels, in order to meet the new government sulfur regulations in 2006-2010. Desulfurization research should also take into consideration the fuel-cell fuel processing needs, which will have stringent requirement on desulfurization. | ||
| Keywords | ||
| Clean diesel fuel; Ultra-deep desulfurization; Refining industry; Catalytic process; Biofuels; Alternative solutions | ||
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