为保证流化催化裂化(FCC)汽油烷基化硫转移反应催化剂的稳定性,采用蒸馏水或盐酸作为萃取剂、D101树脂或NKC-9大孔干氢树脂作为吸附剂,考察了FCC汽油原料中碱性氮去除的预处理过程,并比较了预处理过程对FCC汽油硫形态及其含量的影响、烷基化硫转移效果的影响.结果表明,盐酸萃取、NKC-9树脂吸附,能够快速有效的除去FCC汽油中的碱性氮化物,而且NKC-9树脂能够吸附微量的硫化物.脱除碱性氮化物后的FCC汽油进行烷基化反应,几个主要的噻吩硫化物的硫转移率都能达到90％以上.%To improve the catalytic stability of alkylation desulfurization reaction, fluid catalytic cracking (FCC) gasoline was pretreated for alkaline nitrogen removal by extraction with distilled water or hydrochloric acid, followed by adsorption with D101 or NKC-9 macro-porous dry resin. The influences of pretreatment to the extent of desulfurization, and to the amount and molecular structure of residue sulfur in FCC gasoline, were investigated. The results show that, alkaline nitrogen compounds in FCC gasoline can be quickly and effectively removed by hydrochloric acid extraction and NKC-9 resin adsorption, in addition to that, NKC-9 resins can absorb trace amounts of sulfides. With the removal of alkaline nitrogen compound, the transfer rate of several major thiophene sulfides can achieve more than 90% in alkylation reaction of FCC gasoline.
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