Method of manufacturing hydrogen chloride from solutions of amine hydrochlorides

US4230681A · kind A · utility

Assignee

• Chemische Werke Huels Aktiengesellschaft · US

Inventors

• Alfred Coenen · Marl, DE
• Kurt Kosswig · Marl, DE
• Bernhard Hentschel · Cologne, DE
• Jurgen Ziebarth · Marl, DE

Key dates

• Filing date: Feb 6, 1979
• Grant date: Oct 28, 1980
• Expiry date: Feb 6, 1999

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01B7/0706
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A method of manufacturing hydrogen chloride by splitting off hydrogen chloride from solutions of amine hydrochlorides. The hydrogen chloride is split off by heating the amine hydrochlorides at 100.degree. to 250.degree. C. in an inert, organic, essentially non-polar solvent having a boiling point at least 20.degree. C. above the temperature of heating while an inert gas stream is passed therethrough. The hydrogen chloride is then separated from the exiting mixture of inert gas and hydrogen chloride. The amine components of the amine hydrochlorides are tertiary alkylamines, tertiary aryldialkylamines, secondary arylalkylamines, primary alkylarylamines or mixtures thereof which contain 14 to 36 carbon atoms in the side chains bonded to nitrogen. Not more than one of the side chains of the amine component is a methyl group bonded to nitrogen and at least one of the side chains is an aliphatic radical, bonded to nitrogen, containing at least 6 carbon atoms. The inert solvents boil above 120.degree. C. and include straight-chain or branched aliphatic, cycloaliphatic, aromatic or araliphatic hydrocarbons and mixtures of these compounds, or appropriate petroleum fractions, and furthermore…