Process for liquid-phase conversion with a moving-bed catalyst using a stripper-lift
AssigneeInstitut Francais du Petrole
InventorsFrédéric Hoffmann, Philippe Mege, Dominique Commereuc
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Abstract
This invention pertains to a continuous catalytic process, for example, for the metathesis of olefins that uses a catalyst circulating in a moving bed in at least one reaction zone operating in the liquid phase and in a regenerator, with a lift to transfer the deactivated catalyst emerging from the reaction zone to the regenerator, whereby said process is characterized by the fact that the transfer is accomplished by a gas that does not react with the catalyst and with the stripping off of at least a portion of the organic matter that is adsorbed on the deactivated catalyst.
Claims25
In a catalytic olefin metathesis process comprising circulating a catalyst in a moving bed in at least one reaction zone operating in the liquid phase and in a regenerator, with a lift to transfer deactivated catalyst emerging from the reaction zone to the regenerator, the improvement comprising conducting the transfer with a gas that does not react with the catalyst and while stripping off of at least a portion of organic matter adsorbed on the deactivated catalyst, and wherein the speed of deactivated catalyst in the lift is 2-10 m/sec.
In a catalytic process comprising circulating a catalyst in a moving bed in at least one reaction zone operating in the liquid phase and in a regenerator, with a lift to transfer deactivated catalyst emerging from the reaction zone to the regenerator, the improvement comprising conducting the transfer with a gas that does not react with the catalyst while stripping off of at least a portion of organic matter adsorbed on the deactivated catalyst and wherein the speed of deactivated catalyst in the lift is sufficient to entrain particles upwardly.
In a catalytic process comprising circulating a catalyst in a moving bed in at least one reaction zone operating in the liquid phase and in a regenerator, with a lift to transfer deactivated catalyst emerging from the reaction zone to the regenerator, the improvement comprising conducting the transfer with a gas that does not react with the catalyst and while stripping off of at least a portion of organic matter adsorbed on the deactivated catalyst and wherein the temperature of the gas is 10-150° C.
In a catalytic process comprising circulating a catalyst in a moving bed in at least one reaction zone operating in the liquid phase and in a regenerator, with a lift to transfer deactivated catalyst emerging from the reaction zone to the regenerator, the improvement comprising conducting the transfer with a gas that does not react with the catalyst, while stripping off at least a portion of organic matter adsorbed on the deactivated catalyst.
Dependencies are inferred from the claim text.