FIELD: chemistry.
SUBSTANCE: initial hydrocarbon raw material is initially separated and first part of initial raw material is introduced into first zone of dehydration reaction, which functions without oxidation re-heating, and obtained as a result output flow is introduced into second zone of dehydration reaction, which functions without oxidation re-heating. Obtained as a result output flow from second zone of dehydration reaction, together with second part of initial raw material is introduced into third zone of dehydration reaction, which functions with oxidation re-heating.
EFFECT: increased method productivity.
10 cl, 1 dwg
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