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Calibration of full range FCC gasoline hydrodesulfurization technology and operation analysis

GONG Chaobing,ZHAO Chenxi,XIE Haifeng   

  1. CNOOC Huizhou Refining & Petrochemicals Co.,Ltd.,Huizhou 516086,Guangdong,China
  • Online:2014-01-05 Published:2014-01-05

全馏分催化汽油加氢脱硫工艺的标定与运行分析

龚朝兵,赵晨曦,谢海峰   

  1. 中海炼化惠州炼化分公司,广东 惠州 516086

Abstract: 50.0×104 t/a FCC gasoline hydrodesulfurization unit is a new-built unit for CNOOC Huizhou Refinery to meet the requirements of gasoline upgrading to national emissions standards No.4 and No.5. FCC full range gasoline selective hydrodesulfurization technology (CDOS-FRCN) is adopted in this unit,catalyst with proprietary technology is provided by Beijing Haishunde Titanium Catalyst Co. Ltd.. Unit calibration data show,FCC full range gasoline is converted to hydrogenated gasoline by CDOS-FRCN technology,the content of sulfur could reach 11 μg/g,the content of mercaptan could reach 10 μg/g,the loss of RON is less than 1.5. The inlet temperature of the second reactor R102 has a strong effect on the desulfurization effectiveness and RON loss,the higher R102 inlet temperature,the higher the desulfurization rate and the larger RON loss. CDOS-FRCN hydrodesulphurization technology could effectively decrease sulfur content in gasoline and octane number loss,could provide economical flexible technological options for producing clean gasoline with sulfur content less than 50 μg/g or 10 μg/g.

Key words: FCC gasoline, full range, hydrodesulfurization, catalyst, octane value, mercaptan, reaction temperature

摘要: 中海油惠州炼化为了满足全厂汽油升级至国Ⅳ、Ⅴ标准的要求,新建一套50万吨/年催化汽油加氢脱硫装置。该装置采用全馏分催化汽油选择性加氢脱硫技术(CDOS-FRCN),催化剂采用海顺德公司的催化剂专利技术。装置标定情况说明,催化汽油经全馏分加氢精制后,加氢精制汽油硫质量分数达到11 μg/g,硫醇硫质量分数达到10 μg/g,汽油辛烷值损失小于1.5个单位。二反入口温度对脱硫效果和辛烷值损失有很大影响,温度越高,则脱硫率越高,但辛烷值损失偏大。CDOS-FRCN技术能够有效降低汽油硫含量,减少辛烷值损失,可为炼油厂生产硫含量小于50 μg/g甚至10 μg/g的清洁汽油提供经济、灵活的技术方案。

关键词: 催化汽油, 全馏分, 加氢脱硫, 催化剂, 辛烷值, 硫醇, 反应温度

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