FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing olefin monomers for producing a polymer. The method is characterised by that it includes the following steps: feeding into a catalyst bed (7) biological oil containing more than 50% tall oil fatty acids and up to 25% tall oil resin acids, as well as hydrogen gas; and catalytic deoxygenation of the oil with hydrogen in the catalyst bed (7); cooling the stream coming out of the catalyst bed (7) and separation thereof into liquid phase (10) containing hydrocarbons and a gaseous phase; and steam cracking (4) of the liquid (13) containing hydrocarbons to form a product containing polymerised olefins.
EFFECT: method provides an industrially applied process, which can be used to convert wood-based raw material to olefin monomers used to produce biological raw material-based polymers.
15 cl, 1 tbl, 6 ex, 1 dwg
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