METHOD FOR PRODUCING HIGHLY PURE MONOETHYLENE GLYCOL

METHOD FOR PRODUCING HIGHLY PURE MONOETHYLENE GLYCOL

The invention relates to a method for obtaining highly pure monoethylene glycol from the product of hydrolysis of ethylene oxide by distillation, by means of dehydration under pressure, preferably in a cascade, vacuum dehydration and subsequent pure distillation. According to the inventive method, t...

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Hauptverfasser: ADRIAN, TILL, VANSANT, FRANS, BESSLING, BERND, HASSE, HANS, THEIS, GERHARD
Format: Patent
Sprache:eng ; fre
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ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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creator ADRIAN, TILL
VANSANT, FRANS
BESSLING, BERND
HASSE, HANS
THEIS, GERHARD
description The invention relates to a method for obtaining highly pure monoethylene glycol from the product of hydrolysis of ethylene oxide by distillation, by means of dehydration under pressure, preferably in a cascade, vacuum dehydration and subsequent pure distillation. According to the inventive method, the pressure dehydration column or at lea st the first pressure dehydration column of the cascade (2, 3, 4) has a stripping section with at least one separation stage, preferably 2- 10 separation stages, especially 3-6 stages, and in that part of the top flow of the dehydration column(s) (2, 3, 4) is sluiced out with the stripping section.
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subjects ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
title METHOD FOR PRODUCING HIGHLY PURE MONOETHYLENE GLYCOL
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