Application of narrow fractions cutting technology in clean gasoline production process
Lu Xu*, Zhao Qinfeng, Lan Ling, Piao Jiarui, Wang Shuqin
Petrochemical Research Institute of PetroChina, Beijing 100195, China
Abstract
The narrow fraction cutting of pre-hydrogenation FCC gasoline of domestic refinery was carried out by using a spinning band distillation apparatus.The distribution regularities of sulfur and olefins of each narrow fraction were analyzed.The accurate cutting scheme of full fractionation of pre-hydrogenation FCC gasoline was provided.The experimental results showed that in order to reduce the contents of olefins in heavy gasoline and octane number loss due to olefins saturation,the total sulfur content of cutting gasoline could be controlled at the upper limit of sulfur index and the maximum amount of olefins was cut into light gasoline during the process of hydrodesulfurization.
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