Mineral oils: processes and products – Refining – Sulfur removal
Patent
1987-02-20
1991-07-02
McFarlane, Anthony
Mineral oils: processes and products
Refining
Sulfur removal
208217, 208152, 134 2212, 134 2218, 422178, 422219, 422232, C10C 4502
Patent
active
050283146
ABSTRACT:
Heavy oils containing metal contaminants are hydrodesulfurized in a reactor containing a series of fixed beds of catalyst. The catalyst particles become caked together during the hydrodesulfurization process, possibly due to formation of metal sulfides and carbonaceous deposits, and the caked catalyst is removed by a hydro drilling method. The hydro drilling is preferably commenced by drilling a central opening through the catalyst beds. The catalyst particles and chunks are cut from the bed and removed from the reactor vessel through catalyst dump openings at the bottom of the vessel. Preferably, the dump openings are maintained open by hydro lancing as the cutting of catalysts in the upper part of the vessel loosens the catalyst so that the catalyst will drop down the central opening and thus out through the catalyst dump openings at the bottom of the reactor vessel.
REFERENCES:
patent: 2669531 (1954-02-01), Petkus
patent: 2925382 (1960-02-01), Kent et al.
patent: 3775805 (1973-12-01), Mitchell et al.
patent: 3920537 (1975-11-01), Walker
patent: 4018623 (1977-04-01), Walker
patent: 4259294 (1981-03-01), Langhout et al.
patent: 4398852 (1983-08-01), Milligan
patent: 4502946 (1985-03-01), Pronk
patent: 4591428 (1986-05-01), Pronk
patent: 4630779 (1986-12-01), Svuchi et al.
patent: 4642223 (1987-02-01), Al-Saigh
Goldberger Mark F.
Yarnot Peter L.
Chevron Research Company
De Jonghe T. G.
McFarlane Anthony
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