摘要
以生产合格重整原料为目的,将催化裂化汽油(FCCN)不同沸程的馏分掺入直馏汽油(SRN)在小型装置上进行了加氢精制试验。结果表明,掺入FCCN后加氢脱硫率下降的主要因素是FCCN中含有的大量烯烃与H_2S反应重新生成硫醇,以及FCCN中含有较多难以加氢脱除的噻吩类硫化物。对SRN掺入20％的FCCN85～180℃馏分的混合原料进行加氢精制工艺条件考察,得到生产合格重整原料的适合工艺条件为:温度290～310℃、压力3.2MPa、空速2～3h^(-1)、氢油体积比300。
Hydrotreating tests of straight-run naphtha blended with different boiling range FCC naphtha were conducted on a pilot plant for producing qualified reforming feedstock. It was found that the hydrodesulfurization of the naphtha mixture became more difficult than that of the straight-run naphtha alone. The main reasons were the high contents of olefins and thiophenes in FCC naphtha. The olefins reacted with hydrogen sulfide and formed mercaptans, and thiophenes were difficult to be removed. Investigation showed that the appropriate process conditions for a mixed feedstock of straight run naphtha blended with 20% 85 -180℃ FCC naphtha to produce qualified reforming feedstock were under a reaction temperature of 290-310℃ , a pressure of 3. 2MPa, a space velocity of 2 - 3h-1 and a hydrogen to oil volume ratio of 300.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2003年第6期10-13,共4页
Petroleum Processing and Petrochemicals
关键词
直馏汽油
掺炼
催化裂化
汽油
加氢
重整原料
catalytic cracking
straight run
gasoline stock
hydrodesulfurization
reforming
feed- stock
olefin
