Process and apparatus for the photochemical production of halogeno-alkanes and cycloalkanes
AssigneeSociete Nationale Elf Aquitaine
InventorJean Ollivier
Life of this patent
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Abstract
Halogenation of alkanes and of cycloalkanes by the action of ultraviolet upon a solution of the halogen in the alkane; the solution is prepared in advance and passes into the irradiated zone, after having been put into contact with a halogenation inhibitor. Preferably, the inhibitor, which is a metal of Group VB of the Periodic Classification, is also provided at the outlet from the reactor.
Claims19
In a process of halogenating an alkane or cycloalkane by passing a solution of halogen in the alkane or cycloalkane through a zone irradiated by ultraviolet light, the improvement which comprises disposing at least one metal of Group VB of the Periodic Classification of Elements at the inlet of said zone, whereby the solution comes into contact with the metal when flowing to the zone of irradiation.
In a process of monochlorinating cyclohexane by passing a solution of chlorine in cyclohexane through a zone irradiated by ultraviolet light, the improvement which comprises disposing pieces of at least one metal of Group VB of the Periodic Classification of Elements at the inlet of the zone of irradiation such that the solution comes into contact with the pieces when flowing to the zone of irradiation.
In an apparatus for halogenating an alkane or cycloalkane by passing a solution of halogen in the alkane or cycloalkane through a zone irradiated by ultraviolet light comprising a reactor containing an ultraviolet light, a mixer for receiving the alkane or cycloalkane and the halogen, means to transport material in the mixer to the reactor, a separator, and means to transport material from the reactor to the separator, the improvement which comprises at least one metal of Group VB of the Periodic Classification of Elements disposed at the inlet of the reactor.
Dependencies are inferred from the claim text.