Mineral oils: processes and products – Chemical conversion of hydrocarbons – Plural serial stages of chemical conversion
Patent
1985-05-17
1986-10-14
Doll, John
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Plural serial stages of chemical conversion
208 95, 208 96, 208 99, 208251R, 208108, 208 39, 208309, 208 48R, C10G 4726, C10G 4736
Patent
active
RE0322652
ABSTRACT:
[In a hydrogenation operation employing an ebullated catalytic bed, recycle is recovered from the hydrogenated product with at least 25%, by volume, of the recycle boiling above 950.degree. F. The recycle is cooled to a temperature of from 350.degree. to 600.degree. F. to separate coke precursors, prior to recycle to the hydrogenation. Higher conversion levels can be achieved by effecting recycle in such manner.]Disclosed is a hydrogenation process using at least one fluidized catalytic stage and a recycle material of heavy hydrogenated effluent. The heavy effluent material is cooled to a temperature within 350.degree.-600.degree. F. to separate toluene and heptane insoluble coke precursors prior to recycle. This separation may be enhanced by the use of centrifugation, filtration or a bed of particulate material (e.g. calcined coke).
REFERENCES:
patent: 2010007 (1935-08-01), Bray
patent: 2715603 (1955-08-01), Lanning
patent: 3207688 (1965-09-01), Van Driesen
patent: 3238118 (1966-03-01), Arey et al.
patent: 3549517 (1970-12-01), Lehman et al.
patent: 3788973 (1974-01-01), Wolk et al.
patent: 3839187 (1974-10-01), Vanvenrooy
patent: 3844933 (1974-10-01), Wolk et al.
patent: 4058449 (1977-11-01), Reitz et al.
patent: 4151073 (1979-04-01), Comolli
patent: 4176048 (1979-11-01), Corns et al.
patent: 4211634 (1980-07-01), Bertolacini et al.
patent: 4214976 (1980-07-01), Kmak
patent: 4252634 (1981-01-01), Khulbe et al.
patent: 4255248 (1981-03-01), Rosenthal et al.
patent: 4358359 (1982-11-01), Rosenthal et al.
patent: 4457830 (1984-07-01), Kydd
patent: 4537675 (1985-08-01), Silver et al.
Sze Morgan C.
Unger Harold
Van Dreisen Roger P.
Doll John
Johnson Lance
Lummus Crest Inc.
Olstein Elliott M.
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