METHOD FOR OBTAINING LIGHT ALKENES FROM INITIAL HYDROCARBON RAW MATERIAL Russian patent published in 2010 - IPC C10G11/05 C07C4/06 C07C11/04 C07C11/06 

FIELD: oil and gas industry.

SUBSTANCE: invention refers to the method for obtaining light alkenes from initial hydrocarbon raw material, which involves the following stages: (a) provision of crude naphtha or kerosene as initial raw material; (b) supply of initial raw material at least to one reactor with fixed layer or fluidised layer, where the raw material is provided with possibility of reacting in presence of catalyst, and (c) separation and extraction of light alkenes from effluent flow of reaction zone, where catalyst consists of the product obtained by water evaporation from mixture of initial materials, which includes 100 weight parts of molecular sieve with frame of -Si-OH-Al groups, 0.01-5.0 of weight parts of water non-soluble salt of metal and 0.05-17.0 of weight parts of phosphate compound, where metal salt non-soluble in water is oxide, hydroxide or oxalate at least of one metal chosen from the group consisting of alkaline-earth metals, transition metals and heavy metals having oxidation degree of ⁺3-⁺5.

EFFECT: use of this method allows maintaining catalytic reactivity during long period of time at high temperature and atmosphere of high humidity.

8 cl, 3 tbl, 17 ex, 1 dwg