FIELD: chemistry.
SUBSTANCE: pyrolysis of methylene chloride is carried out on a catalyst with a carbonisation degree in the range of 2.6-5.2 wt %, which is obtained during 60-150 minutes of a reactor work, after which in order to support the obtained degree of carbonisation a catalyst is constantly discharged into a regenerator, excessive carbon is removed by burning with air at a temperature of 550°C. After that it is returned into the reactor, providing constant circulation of the carbonised catalyst from the reactor of pyrolysis into the regenerator and back.
EFFECT: application of the method makes it possible to increase selectivity of the process of obtaining lower olefins due to increase of the catalyst selectivity, applied in the process of methylene chloride pyrolysis.
2 ex, 2 tbl
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