Sequential residue hydrodesulfurization and thermal cracking ope

Mineral oils: processes and products – Chemical conversion of hydrocarbons – With preliminary treatment of feed

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Details

208 49, 208 58, 208108, 208147, 208212, C10G 2300, C10G 3400

Patent

active

040173801

ABSTRACT:
A process comprising passing a first stream comprising residual oil and hydrogen downwardly through a zone containing hydrodesulfurization catalyst under hydrodesulfurization conditions until said catalyst is deactivated. Subsequently, passing a second stream of residual oil and hydrogen upwardly through the deactivated hydrodesulfurization catalyst under thermal cracking conditions, including a temperature above the hydrodesulfurization temperature.

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