延迟焦化反应中硫化物转化的研究

Study on Sulfide Transformation in Delayed Coking Reaction

延迟焦化工艺能够将各种重质、劣质渣油转化成经济效益较高的轻质油品和较优的石油焦,但是延迟焦化过程中硫化物的反应,仍然是当下该行业的一个瓶颈点。按照判别规则汽油中的硫化合物分为噻吩类、硫醇类和硫醚类,SOL模型可以计算焦化汽油中硫化合物的分布。噻吩分子的含量随着碳数的增加而增加。乙硫醇和丙硫醇在硫醇中的含量较高。SOL模型可以在分子水平上揭示反应条件对延迟焦化过程中硫化合物转化的影响,有助于准确控制焦化汽油中的硫含量。

Delayed coking process can convert various heavy and low-quality residuals into light oil products with higher economic benefits and superior petroleum coke,but the reaction of sulfide in delayed coking process is still a bottleneck in this industry.Sulfur compounds in gasoline can be divided into thiophene,mercaptan and sulfide according to the discrimination rules.The SOL model can calculate the distribution of sulfur compounds in coking gasoline.The content of thiophene molecule increases with the increase of carbon number.The content of ethanethiol and propyl mercaptan in mercaptan is higher.The SOL model can reveal the effect of reaction conditions on the conversion of sulfur compounds in delayed coking process at the molecular level,which is helpful to accurately control the sulfur content in coking gasoline.