Separation of methyl t-butyl ether from hydrocarbons by extractive distillation

Patent · Tue Apr 28 04:00:00 EDT 1987

OSTI ID:6489119

Berg, L

A method is described for recovering methyl t-butyl ether from a mixture of methyl t-butyl ether and close boiling hydrocarbons. This comprises distilling a mixture of methyl t-butyl ether and close boiling hydrocarbons in a rectification column in the presence of about one to two parts of extractive agent per part of methyl t-butyl ether-close boiling hydrocarbon mixture, recovering the hydrocarbons as overhead product, obtaining the methyl t-butyl ether and the extractive agent from the stillpot, separating the methyl t-butyl ether from the extractive agent by distillation in another rectification column, wherein the extractive agent is dimethylsulfoxide.

• Assignee: NOV; EDB-87-103605; NOV-87-059455
• Patent Number(s): US 4661209
• OSTI ID: 6489119
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
BOILING
BUTYL ETHER
CHEMICAL REACTION YIELD
DISPERSIONS
DISTILLATION
DMSO
ETHERS
EXTRACTION
EXTRACTION APPARATUSES
HYDROCARBONS
METHYL ETHER
MIXTURES
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PHASE TRANSFORMATIONS
SEPARATION EQUIPMENT
SEPARATION PROCESSES
SOLVENT EXTRACTION
SULFOXIDES
YIELDS