文献类型：期刊文献

英文题名：An improved desulfurization process based on H₂O₂/formic acid oxidation system followed by liquid-liquid extraction.: part 1.: Coker gas oil feedstocks

作者：Hao, L; Shen, BX; Zhou, XL

机构：[1]E China Univ Sci & Technol, Dept Chem Engn, Shanghai 200237, Peoples R China

年份：2005

卷号：23

期号：7-8

起止页码：991

外文期刊名：PETROLEUM SCIENCE AND TECHNOLOGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000231699900016)】；

语种：英文

外文关键词：CGO; EDTA; oxidative desulfurization; thiophenic sulfur

摘要：An improved desulfurization process for CGO (coker gas oil) has been investigated on the basis of the oxidation of sulfur compounds by using hydrogen peroxide and formic acid as oxidation reagents. Thiophenic sulfur in CGO was determined via that thioethers could be oxidized to sulfones with KIO3 in acidic medium and LC (liquid chromatography) method. Aiming at reducing the wasteful decomposition of hydrogen peroxide in the selective oxidation desulfurization H2O2/formic acid system, some additives used in the paper or pulp industry, including EDTA, sodium silicate, and magnesium silicate, were used to improve the oxidative efficiency. The following extraction results of oxidized CGO used DMF, furfural, and NMP as solvent showed that EDTA could stabilize desulfurization liquors by complexing transition metals that catalyze hydrogen peroxide decomposition, thus making oxidation and extraction processes more effective.