Adsorptive removal of sulfur and nitrogen species from a straight run gas oil over activated carbons for its deep hydrodesulfurization

被引:182
作者
Sano, Y [1 ]
Choi, KH [1 ]
Korai, Y [1 ]
Mochida, I [1 ]
机构
[1] Kyushu Univ, Inst Adv Mat Chem & Engn, Kasuga, Fukuoka 8168580, Japan
关键词
hydrodesulfurization; inhibition; activated carbon; adsorption;
D O I
10.1016/j.apcatb.2003.12.007
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
As a pre-treatment step for ultra deep hydrodesulfurization (UD-HDS), sulfur and nitrogen species were adsorptively removed from the straight run gas oil (SRGO) over activated carbon materials. An activated carbon having the largest surface area and highest surface polarity showed the highest total capacity for adsorption of sulfur and nitrogen species as 0.098 g sulfur and 0.039 g nitrogen per 1 g of the activated carbon, respectively, among the carbon materials examined. Removal of both nitrogen and sulfur species was found very effective to achieve UD-HDS under conventional HDS conditions. SRGO treated over activated carbon contained only 11 ppm of sulfur, while non-treated SRGO contained still 193 ppm of sulfur in its HDS product. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:219 / 225
页数:7
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