Process for the solvent deasphalting of asphaltene-containing hydrocarbons
AssigneeNippon Oil Co., Ltd.
InventorsMasaki Ikematsu, Isao Honzyo, Kazuo Sakai
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Abstract
A continuous process for solvent deasphalting asphaltene-containing hydrocarbons which comprises mixing (A) 100 parts by weight of asphaltene-containing hydrocarbons with (B) 0.005-0.5 parts by weight of an amorphous silicon dioxide and/or a silicate compound and also with (C) 5-2000 parts by weight of a solvent such as n-heptane, n-hexane, n-heptane or a mixed n-pentane.n-butanol solvent, to form a mixture which is then allowed to stand still to precipitate and separate the asphaltene therefrom thereby obtaining a deasphalted oil.
Claims8
A continuous process for solvent deasphalting asphaltene-containing hydrocarbons which comprises
- (I) mixing
- (A) 100 parts by weight of asphaltene-containing hydrocarbons with
- (B) 0.005-0.5 parts by weight of at least one member selected from the group consisting of amorphous silicon dioxides and silicate compounds and
- (C) 50-2,000 parts by weight of at least one member selected from the group consisting of the following solvents (1)-(4):
- (1) aliphatic and alicyclic hydrocarbons having 3-20 carbon atoms,
- (2) saturated aliphatic and saturated alicyclic monohydric alcohols having 1-10 carbon atoms,
- (3) liquid hydrogen sulfide and
- (4) liquid carbon dioxide to form a mixture of the materials (A), (B) and (C) and then
- (II) making the thus formed mixture stand still to precipitate and separate the asphaltene therefrom thereby obtaining a deasphalted oil.
Dependencies are inferred from the claim text.