Hydrocarbon dehydrogenation to olefins - using iodine, oxygen and iodide acceptor, in separate dehydrogenation, accepting and iodine regeneration zones

Hydrocarbon dehydrogenation to olefins - using iodine, oxygen and iodide acceptor, in separate dehydrogenation, accepting and iodine regeneration zones

Hydrocarbons are converted to mono- and diolefins by dehydrogenation at 450-570 degrees C in presence of I2, O2 and a content acceptor for HI formed in dehydrogenation, HI is accepted at 430-550 degrees C. I2 is regenerated from contact by means of O2 at 450-650 degrees C. Dehydrogenation, accepting...

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1. Verfasser: MIKHAIL LEONIDOVICH DVORETSKY, NINA SERGEEVNA KRUGLIKOVA, VALERIA PETROVNA MUSIENKO, DZANTEMIR NIKOLAEVICH TMENOV, LIDIA PETROVNA SHAPOVALOVA, BORIS SERGEEVICH KOROTKEVICH, JURY NIKOLAEVICH RASTVOROV, KALISA IVANOVNA SVIRSKAYA, GENNADY ARDAKIEVICH STEPANOV, JURY ALEXANDROVICH SHMUK, ALBERT VLADIMIROVICH TABAKOV, ROMAN IVANOVICH POLATAIKO, VALERY PETROVICH L
Format: Patent
Sprache:eng ; fre
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ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Zusammenfassung:Hydrocarbons are converted to mono- and diolefins by dehydrogenation at 450-570 degrees C in presence of I2, O2 and a content acceptor for HI formed in dehydrogenation, HI is accepted at 430-550 degrees C. I2 is regenerated from contact by means of O2 at 450-650 degrees C. Dehydrogenation, accepting and regeneration are separately carried out, in appts. zones joined to one another. Dehydrogenation zone is set between accepting and regeneration zones. 90-30% O2, w.r.t. total quantity, is charged to regeneration step. and 10-70% to dehydrogenation step. Prods. are used as monomers and intermediates in prodn. of synthetic rubber and plastics. Process may be used for prepn. of divinyl from n-butane, and n-butylenes, isobutylene from isobutene, isoprene from isopentane and isoamylenes, styrene from ethylbenzene, vinyl toluene from ethyltoluenes. Each step can take place under optimum conditions. End-prods. yield is increased.