Sequential residue hydrodesulfurization and thermal cracking ope

Details Sequential residue hydrodesulfurization and thermal cracking ope Sequential residue hydrodesulfurization and thermal cracking ope

1975-07-18

1977-04-12

Meros, Edward J.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

With preliminary treatment of feed

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.

REFERENCES:
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patent: 2916443 (1959-12-01), Riordan
patent: 3291721 (1966-12-01), Schuman
patent: 3477943 (1969-11-01), Masologites et al.
patent: 3642612 (1972-02-01), Girotti et al.
patent: 3694351 (1972-09-01), White
patent: 3746636 (1973-07-01), Paraskos et al.
patent: 3809644 (1974-05-01), Johnson et al.
patent: 3817855 (1974-06-01), Smith et al.

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