COMMERCIAL APPLICATION OF GARDES-Ⅱ EX-SITU PRESULFIDED CATALYST IN FCC GASOLINE HYDRODESULFURATION UNIT

Abstract

Abstract: The GARDES-Ⅱtechnique for gasoline hydrodesulfurization with ex-situ presulfided catalysts were applied in a 1.2 Mt/a FCC gasoline HDS unit of PetroChina Hohhot Petrochemical Company and the results were introduced. Compared with the oxidized catalyst, the ex-situ presulfided catalyst has the superiorities of safe, environmental friendly, simple and less time-consuming in the start-up stage. The calibration data indicated that the gasoline produced by GARDES-Ⅱ ex-situ presulfided catalysts could completely meets the requirements of China VI（A）gasoline standard under the current conditions of Hohhot Petrochemical Company of PetroChina. The average sulfur content of the product by Doctor Test was 7.1 μg/g, the octane number loss was 1.1-1.3 units with the gasoline yield of 99.0% and energy consumption of 516.23 MJ/t. In addition, the average olefin reduction of heavy cracked naphtha（HCN）was 11.4 percentage point. It is concluded that the GARDES -Ⅱ with ex-situ presulfided catalysts reaches the HDS level of in-situ presulfurization process and have good desulfurization activity and octane number recovery.

Key words: GARDES-Ⅱ, ex-situ sulfidation, FCC gasoline, hydrodesulfurization

CLC Number:

References

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