Process for the production of phenyl alkanes operating in a moving bed
AssigneeInstitut Francais du Petrole
InventorsEmmanuelle Guillon, Eric Sanchez
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Abstract
A process for the production of phenyl alkanes by catalytic alkylation on a solid acid catalyst employs at least one moving-bed reactor. This process comprises a catalytic alkylation stage of an aromatic compound by at least one olefin that has 9 to 16 carbon atoms per molecule, combined with a catalyst reactivation circuit. Each reactor contains n reaction zones, whereby each of said zones consists of an acidic solid catalyst, optionally different from one zone to the next. Entering each reaction zone, a fraction of the total amount of olefins necessary to the alkylation reaction is introduced. The phenyl alkanes that are obtained by the process according to the invention are particularly suitable for the production of detergents.
Claims20
A process for the production of phenyl alkanes comprising conducting alkylation of an aromatic compound with a feedstock that contains C9 to C16 olefins, providing at least one reactor divided into several reaction zones having a top and a bottom, each reaction zone containing a moving bed of an acidic solid catalyst, passing the catalyst from each reaction zone continuously into a rejuvenation circuit, reintroducing resultant rejuvenated catalyst into the top of said reaction zone, and wherein the catalyst of each reaction zone is periodically sequentially sent into a regeneration circuit leaving said reaction zone, then is reintroduced at the top of said reaction zone.
Dependencies are inferred from the claim text.