FIELD: chemistry.
SUBSTANCE: invention relates to a method of separating and freeing a catalyst during conversion of oxygen-containing compounds to olefins, involving the following steps: (a) converting oxygen-containing compounds to olefins in a fluidised zone in a reactor in the presence of a molecular sieve type catalyst, having carbon-containing deposits, where said oxygen-containing compounds are selected from a group consisting of methanol, ethanol, dimethyl ether or mixtures thereof; (b) tapping the output stream containing olefins from the reactor, where the output stream surrounds part of the catalyst, having carbon-containing deposits; (c) separation of part of the catalyst from the output stream through contact of the output stream with neutralised liquid slaking medium in a slaking column in order to form a stream which contains the catalyst; where neutralisation of the slaking medium is carried out in a separate section after separating part of the catalyst; and (d) burning in an installation for burning carbon-containing deposits which are in that part of the catalyst which lies in the stream containing the catalyst.
EFFECT: method increases efficiency of the process by preventing accumulation of acids in the recycled slaking water.
10 cl
