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《PETROLEUM REFINERY ENGINEERING》 1998-03
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IMPROVE STABILITY OF FCC LCOS BY SOLVENT EXTRACTION

Zhan Fengtao; Li Lin; Xu Yongqiang; Su Yixun(Uniwersity of Petroleum Dongying, Shandong 257062 )  
Color degradation with time is an obvious change in fuel properties for diesel fuels especially forcatalytic cracking light cycle oils(LCOs). For improvement of the color stability of diesel fuels, solvent extraction isan effective means which could extract some unstable compounds such as nitrogen compounds, sulfur compounds andfused arornatic compounds. A selective solvent was used to extract these compounds and upgrade the color stability ofdiesel fuels. When the volumetric ratio of solvent to oil is wtthin 1: 10 ~ 1:500, the yield of refined diesel was above99%. The colority of the refined oils after aging was 3 .5.
【CateGory Index】: TE626
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