CHARARTERIZATION OF METAL DEPOSITION ON SPENT RESIDUE HYDROTREATING CATALYSTS FROM INDUSTRIAL PLANT

Abstract

Abstract: The spent residue hydroprocessing catalysts withdrawn from industrial plant were treated by Soxhlet extraction with n-heptane and toluene to remove soluble coke deposits and residual oil，respectively, to investigate the metal content, morphology and distribution. It was recognized that the metal deposition was gradually decreased along the reactor axial down. The low content of asphaltene on the surface of spent catalysts was revealed by Raman and XPS. The active phases of the catalyst were MoS2，NiMoS or CoMoS. The coke and metal depositions reduced the active phase on the external surface of the catalysts.

Key words: residue hydrotreating, deposited metal, coke deposition, deactivation

CLC Number:

Diao Yuxia Yuan Hui Qiu Limei Sun Shuling Xu Guangtong. CHARARTERIZATION OF METAL DEPOSITION ON SPENT RESIDUE HYDROTREATING CATALYSTS FROM INDUSTRIAL PLANT[J]. Petroleum Processing and Petrochemicals, 2019, 50(7): 7-12.

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