Process for the recovery of combustible components of a gas...

Details Process for the recovery of combustible components of a gas... Process for the recovery of combustible components of a gas...

B - Operations, Transporting

01

D

B01D 53/14 (2006.01) B01D 53/18 (2006.01) C07D 301/32 (2006.01)

Patent

CA 2450816

The present invention refers to a process for the recovery of combustible components of a gas stream comprising the combustible components and oxygen by selective absorption of the combustible components in a solvent, whereby during the absorption the gas phase is dispersed in a continuous liquid phase of the solvent. In a preferred embodiment the present invention refers to a process for the epoxidation of propene with hydrogen peroxide in an alcoholic solvent in presence of a catalyst, wherein a gas stream comprising unreacted propene, propene oxide and oxygen from the decomposition of the hydrogen peroxide is separated from the reaction mixture and the combustible components in said gas stream are recovered using a process as described above.

La présente invention concerne un traitement de récupération des composants combustibles dans un courant gazeux comprenant ces composants combustibles et de l'oxygène. A cet effet, on procède par absorption sélective des composants combustibles dans un solvant, la phase gazeuse étant dispersée pendant l'absorption dans une phase liquide continue du solvant. Selon un mode de réalisation préféré, la présente invention porte sur un procédé d'époxydation du propène avec le peroxyde d'hydrogène dans un solvant alcoolique en présence d'un catalyseur. En l'occurrence, un courant gazeux de propène resté intact, d'oxyde de propène et d'oxygène provenant de la décomposition du peroxyde d'hydrogène est séparé du mélange de réaction, et les composants combustibles dans le courant gazeux sont récupérés en utilisant le traitement déjà décrit.

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