Mineral oils: processes and products – By treatment of solid mineral – e.g. – coal liquefaction – etc. – Plural hydrogenation steps
Patent
1985-09-20
1986-07-29
Wright, William G.
Mineral oils: processes and products
By treatment of solid mineral, e.g., coal liquefaction, etc.
Plural hydrogenation steps
208417, 208418, C10G 106, C10G 100
Patent
active
046029923
ABSTRACT:
In accordance with the invention, during hydrogenation by means of sump phase hydrogenation followed by gas-phase hydrogenation, the high boiling fractions are separated from the lower boiling vapor fractions, after leaving the hot precipitation head, by partial condensation in an intermediate precipitator with the result that the gas-phase reactor has a better service life and optimum reaction conditions can be provided. The improved process results in an improved quality of solvent for the sump phase hydrogenation.
REFERENCES:
patent: 4222844 (1980-09-01), Nizanoff
patent: 4266083 (1981-05-01), Huang
patent: 4283267 (1981-08-01), Maa et al.
patent: 4400263 (1983-08-01), Kydd
patent: 4473460 (1984-09-01), Kuerten et al.
Langhoff Josef
Mirtsch Frank
Wolowski Eckard
Ljungman Nils H.
Ruhrkohle Aktiengesellschaft
Wright William G.
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