FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing 1,3-butadiene. Method includes: a) extracting, by a method of extractive distillation, in an extraction section, an end product comprising 1,3-butadiene and a raffinate product, starting from mixtures of saturated and unsaturated compounds having from 2 to 10 carbon atoms in chain; b) sending raffinate product to a dehydrogenation section; c) dehydrogenating raffinate product in dehydrogenation section in presence of a dehydrogenation catalyst and an inert product to form a reaction effluent containing 1,3-butadiene; d) recirculating reaction effluent comprising 1,3-butadiene directly to extraction section after separating incondensable compounds.
EFFECT: proposed method increases output of 1,3-butadiene.
18 cl, 2 ex, 3 dwg, 1 tbl
| Title | Year | Author | Number |
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