GC-FID/MS技术应用于苯并噻吩催化裂化转化规律的研究

首次利用相对质量响应因子建立了GC-FID/MS技术分析裂化液体中硫化物的方法，并将其应用于苯并噻吩催化裂化转化规律的研究。结果表明，该方法的准确度较高，苯并噻吩催化裂化反应后的硫平衡均高达95%以上。在催化裂化条件下，纯苯并噻吩很难开环裂化脱硫，四氢萘的加入可明显促进苯并噻吩的转化，提高气体硫的摩尔选择性，并降低裂化汽油馏分段的硫含量。

Application of GC-FID/MS Method on the Investigation of Benzothiophene Transformation Under FCC Condition

By using relative quality response factor, a method was established to analyze sulfur-containing compounds in liquid product by GC-FID/MS technology, and was applied to the investigation of benzothiophene transformation under FCC condition. The results showed that the method had high accuracy, and sulfur equilibrium exceeded 95% in benzothiophene cracking systems. Under FCC condition, it was very difficult for pure benzothiophene to be cracked into H₂S. However, the conversion of benzothiophene and the selectivity of H₂S were enhanced to a great extent after the addition of tetralin in reaction system, compared with pure benzothiophene system, and the sulfur content distributing in gasoline fraction decreased.