PROCESS FOR PRODUCTION OF ISOBUTENE BY CRACKING MTBE-CONTAINING MIXTURES

PROCESS FOR PRODUCTION OF ISOBUTENE BY CRACKING MTBE-CONTAINING MIXTURES

A process for preparing isobutene including cleaving a mixture obtained from an MTBE-containing feedstock and/or an MTBE-containing stream, affording a stream of reaction products consisting of isobutene, methanol, MTBE and by-products, the latter consisting of a1) high boilers having a boiling rang...

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Hauptverfasser: WINTERBERG, MARKUS, LUH, WALTER, RÖTTGER, DIRK, BUKOHL, REINER, WIEDERHOLD, HOLGER
Format: Patent
Sprache:eng ; fre ; ger
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ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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creator WINTERBERG, MARKUS
LUH, WALTER
RÖTTGER, DIRK
BUKOHL, REINER
WIEDERHOLD, HOLGER
description A process for preparing isobutene including cleaving a mixture obtained from an MTBE-containing feedstock and/or an MTBE-containing stream, affording a stream of reaction products consisting of isobutene, methanol, MTBE and by-products, the latter consisting of a1) high boilers having a boiling range above 55° C. at a pressure of 0.1 MPa; a2) medium boilers having a boiling range of 12 to 55° C. at a pressure of 0.1 MPa; and a3) low boilers having a boiling range below 12° C. at a pressure of 0.1 MPa; distillatively separating into a stream which contains the isobutene product and low boilers, and a stream which contains MTBE, methanol, medium boilers and high boilers; distillatively separating to obtain an MTBE-containing stream and a methanol-containing high boiler stream; recycling an MTBE-containing stream in which the medium boilers being removed completely or partially before recycling.
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subjects ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
title PROCESS FOR PRODUCTION OF ISOBUTENE BY CRACKING MTBE-CONTAINING MIXTURES
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