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US 2001/0019015 A1Published application
Novel photochemical gas-liquid process for halogenating alkylbenzenes
AssigneeElf Atochem S.A.
InventorGerard Desire
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Abstract
The invention provides a process for carrying out a photochemical gas-liquid process for halogenating alkyl-benzenes, said process being carried out in a photochemical gas-liquid reactor comprising a vessel, a central source of radiation, a gas distributor, and additionally, inner sleeve means arranged concentrically between the source of radiation and the vessel, said inner sleeve means providing for internal recirculation of reaction liquid.
Claims19
A process for halogenating alkylbenzenes characterized in that said process is carried out in an axially symmetrical photochemical gas/liquid reactor (1), comprising:
- a vessel (2);
- a central source of radiation (3);
- at least one distributor for gas (4), at the bottom of said reactor;
- inner sleeve means (5) arranged-concentrically between the source of radiation (3) and the vessel (2), said inner sleeve means allowing internal recirculation of reaction liquid, said recirculation comprising a rising movement in the space situated between the source (3) and the inner sleeve means (5) and a descending movement in the space situated between the vessel (2) and the inner sleeve means (5).
1 more element
Dependencies are inferred from the claim text.