FIELD: chemistry.
SUBSTANCE: oxygen compounds are oxygen-substituted aliphatic compounds, which contain 1 to 4 carbon atoms and include alcohols, ethers, aldehydes, ketones, or their mixture, into olefins using a fluidised conversion zone and a catalyst which contains molecular sieve ELAPO, with extraction and recycling contaminating catalyst particles from the stream of the product, coming out from the conversion zone, wherein this method involves the following steps: a) bringing the supply stream into contact with a fluid catalyst in a fluidised conversion zone in conversion conditions, which are sufficient for formation of a mixture of particles of deactivated catalyst and olefin products of the reaction; b) extraction of at least part of the particles of deactivated catalyst from the formed mixture in the zone for separating vapour and solid substances, containing at least one medium for cyclone separation of vapour and solid substance, with formation a stream of particles of deactivated catalyst and a stream coming out of the conversion zone, containing light olefins, unreacted oxygen-containing compounds, water, other reaction products and undesired amount of contaminating particles of catalyst; c) feeding the stream of products, coming out of the conversion zone, into the wet washing zone, where this stream is brought into contact with water in washing conditions, sufficient for formation of an upper vapour stream, which virtually does not contain catalyst and contains light olefins, and the given liquid stream, containing a mixture of contaminating particles of catalyst and water; d) feeding at least part of the stream of particles of deactivated catalyst, formed at step (b), into the regeneration zone, where particles of deactivated catalyst are brought into contact with a stream of oxidising gas in oxidation conditions, which are sufficient for formation of a stream of particles of regenerated catalyst; e) recycling at least part of the given liquid stream, formed at step (c), to step (a) or step (d); and f) feeding at least part of the stream of particles of regenerated catalyst from step (d) to step (a).
EFFECT: significant improvement of cost effectiveness of catalytic process, described as a method of catalytic conversion of a supply stream, containing oxygen compounds.
9 cl, 2 tbl, 2 ex, 1 dwg
