Mineral oils: processes and products – Phenolic or toxic oils
Patent
1979-02-26
1980-09-30
Gantz, Delbert E.
Mineral oils: processes and products
Phenolic or toxic oils
208107, 585469, 585903, 585911, 568799, C10G 106, C07C 1508, C07C 358
Patent
active
042254140
ABSTRACT:
A process is disclosed for hydrocracking coal or other carbonaceous material to produce various aromatic hydrocarbons including benzene, toluene, xylene, ethylbenzene, phenol and cresols in variable relative concentrations while maintaining a near constant maximum temperature. Variations in relative aromatic concentrations are achieved by changing the kinetic severity of the hydrocracking reaction by altering the temperature profile up to and quenching from the final hydrocracking temperature. The relative concentration of benzene to the alkyl and hydroxyl aromatics is increased by imposing increased kinetic severity above that corresponding to constant heating rate followed by immediate quenching at about the same rate to below the temperature at which dehydroxylation and dealkylation reactions appreciably occur. Similarly phenols, cresols and xylenes are produced in enhanced concentrations by adjusting the temperature profile to provide a reduced kinetic severity relative to that employed when high benzene concentrations are desired. These variations in concentrations can be used to produce desired materials for chemical feed stocks or for fuels.
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Churm Arthur A.
Gantz Delbert E.
Jackson Frank H.
Lupo R. V.
Schmitkons G. E.
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