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选择丁硫醚、叔丁硫醚、四氢噻吩和乙基苯基硫醚作为模型化合物 ,在模拟固定床催化裂化微反装置上考察含硫化合物转化和分布规律。在催化裂化过程中 ,烷基硫醚可以完全转化 ,转化产物为硫化氢 ,反应条件对转化程度没有明显影响 ;环状含硫化合物的转化程度与反应条件、溶剂性质有关 ,转化产物主要为硫化氢和少量噻吩 ,生成的噻吩可进一步发生烷基化反应 ,反应温度升高 ,溶剂供氢能力增强 ,硫化氢的收率增加 ;乙基苯基硫醚也可以完全转化 ,转化产物主要为硫化氢和苯硫酚 ,生成的苯硫酚可进一步发生烷基化反应 ,反应温度升高 ,溶剂供氢能力增强 ,硫化氢的收率增加。
Dibutyl sulfide, t-butyl sulfide, tetrahydrothiophene and ethyl phenyl sulfide were selected as model compounds to investigate the conversion and distribution of sulfur compounds on simulated fixed bed catalytic cracking micro-reactor. In the catalytic cracking process, alkyl sulfide can be completely converted, the conversion product is hydrogen sulfide, the reaction conditions have no significant effect on the degree of conversion; the degree of conversion of cyclic sulfur compounds is related to the reaction conditions and the nature of the solvent. The conversion products are mainly sulfidation Hydrogen and a small amount of thiophene, the thiophene generated further alkylation reaction, the reaction temperature increases, the solvent hydrogen capacity increased, the yield of hydrogen sulfide increased; ethyl phenyl sulfide can also be completely converted, the conversion of the main products for the curing Hydrogen and thiophenol, thiophenol generated further alkylation reaction, the reaction temperature increases, the ability of the hydrogen donor solvent, hydrogen sulfide yield increased.