2015•中国炼油与石油化工：英文版Requires access
Fluid Catalytic Cracking Feed Hydrotreatment and itsImpact on Distribution of Sulfur and NitrogenCompounds in FCC Diesel
Bai, Rui Rui, Chai Chai, Yongming, Zhang, Cheng-tao, Liu, Chenguang
Open publisher page 2 citations
Abstract
The sulfides and nitrogen compounds in FCC diesel were analyzed by gas chromatography equipped with apulsed flame photometric detector （GC-PFPD） and gas chromatography coupled with nitrogen chemiluminescence detection（GC-NCD）. And the variation of sulfides and nitrogen compounds in FCC diesel produced from gas oil feed hydrotreatedat different temperatures was investigated. The test results showed that two main types of sulfur compounds, i.e. benzothiophenes（BTs） and dibenzothiophenes （DBTs） were found in diesel. Nitrogen compounds are mainly composed of non-basicnitrogen compounds, and indoles and carbazoles account for about 98% of the total nitrogen contents. The sulfides in FCCdiesel obtained from hydrotreated feed are mainly BTs with a small amount of 4-MDBT and 4,6-DMDBT. With the increasein FCC feed hydrotreating temperature, indoles content in FCC diesel increases, while carbazoles content decreases.