STUDY ON DESULFURIZATION OF PETROLEUM COKE FROM VACUUM RESIDUE DELAYED COKER

Abstract

Abstract: Based on the knowledge that the chemical bond energy of sulfone and sulfone is lower than that of thiophene, it was proposed that the vacuum residue was pre-oxidized to reduce the sulfur content of the coke from delayed coking with acetic acid/hydrogen peroxide oxidation system. The effect of viscosity reduction by oxidation and the oxidation-viscosity reduction process assisted with hydrodynamic cavitation technology on the desulfurization of the petroleum coke were investigated. The results showed that the desulfurization of petroleum coke reached the best at the reaction conditions: cavitation pressure of 8 MPa，400℃，reaction time 1 h, and treating only once. The sulfur content of petroleum coke was reduced from 4.12% to 3.21%，and the coke yield reduced by 2.35 percentage points，the liquid yield increased by 1.93 percentage points.

Key words: vacuum residue, hydrodynamic cavitation, visbreaking, delayed coking, petroleum coke, oxidative desulfurization

CLC Number:

Li Kang Chen Hui Lei Jie Zhang Dexin Chen Jianmin Liu Xuedong Han Haibo. STUDY ON DESULFURIZATION OF PETROLEUM COKE FROM VACUUM RESIDUE DELAYED COKER[J]. Petroleum Processing and Petrochemicals, 2019, 50(7): 52-57.

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