FCC汽油硫化物的生成动力学  

FORMATION KINETICS OF SULFUR COMPOUNDS IN FCC GASOLINE

作　　者：唐津莲[1] 许友好[1] 龚剑洪[1] 汪燮卿[1] 

机构地区：[1]中国石化石油化工科学研究院,北京100083

出　　处：《石油学报（石油加工）》2009年第4期477-484,共8页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家重点基础研究发展规划"973"项目(2006CB202501)资助

摘　　要：在小型固定流化床反应器中，消除内、外扩散影响，考察了FCC汽油烯烃与H2S在催化裂化催化剂上，于400-500℃反应生成硫醇、噻吩等汽油中硫化物的动力学规律。采用无H2S参与的FCC汽油裂化反应，消除温度对烯烃催化转化影响，建立了关于汽油烯烃与H2S反应生成汽油硫化物的幂函数型动力学模型，其中噻吩硫及总硫的生成活化能分别为28810、25376J／mol，二者对应烯烃的反应级数分别为0．38、0．36，对应H2S的反应级数分别为0．22、0．27。残差检验和统计检验结果表明，所得动力学模型合理、可靠，能够真实反映硫化物生成反应的特性。The formation kinetics study of gasoline sulfocompounds, including mercaptan and thiophenic compounds with their boiling point in the range of gasoline fraction, from the reaction of FCC gasoline olefin with H2 S over fluid catalytic cracking catalyst in the temperature range of 400- 500℃, in which the internal and external diffusion effects could be eliminated, was carried out in a small fixed fluidized bed （FFB） unit. On the basis of cracking reaction of FCC gasoline without H2S, eliminating effect of the temperature on the olefin catalytic transformation, the kinetic model of power-law type for describing the formation of gasoline sulfocompounds from the reaction of olefin with H2S was developed. The activation energies of the formation of thiophenic compounds and total sulfocorapounds were 28810 J/mol and 25376 J/mol, respectively, for which the reaction orders of relative gasoline olefin were 0.38 and 0.36, and the reaction orders of H2S were 0.22 and 0.27, respectively. Residual error distribution and statistical test showed that the developed models were acceptable and reliable, which actually reflected the characters of the formation of gasoline sulfocompounds.

关 键 词：汽油烯烃 H2S 噻吩类含硫化合物 汽油硫化物 生成 动力学 

分 类 号：TQ031.9[化学工程]