FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing 1-butene and a 1,3-butadiene derivative. Method involves following steps: a) non-oxidatively catalytically dehydrogenating a feedstock gas stream containing n-butane, hydrogen, other low-boiling secondary constituents and high boilers, to form a product mixture containing unreacted n-butane, 1-butene, 2-butenes, 1,3-butadiene, hydrogen, other low-boiling secondary constituents and high boilers; b) removing hydrogen, other low boilers and high boilers, to give a product mixture containing n-butane, 1-butene, two 2-butenes and 1,3-butadiene; c) reacting some of 1,3-butadiene obtained in removing b), to form a derivative; d) removing 1,3-butadiene derivative obtained in reacting c); e) selectively hydrogenating 1,3-butadiene not derivatised in reacting c), to form 1-butene; and f) distillation removal 1-butene from hydrocarbon stream obtained in hydrogenating e), to leave a residual stream.
EFFECT: use of present method enables to obtain 1-butene and a butadiene derivative, without using expensive methods of separation.
14 cl, 2 dwg
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