Continuous process for recovering pure, concentrated ammonia

US4060591A · kind A · utility

Assignees

• Metallgesellschaft AG · DE
• Chemie Linz GmbH · AT

Inventors

• Alfred Garber · Linz, AT
• Hans-Martin Stonner · Eschborn, DE
• Paul Wiesner
• Alan Welsh Sinclair · Falkirk, GB
• Alfred Schmidt · Seevetal, DE

Key dates

• Filing date: May 25, 1976
• Grant date: Nov 29, 1977
• Expiry date: May 25, 1996

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01C1/10
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Pure, concentrated ammonia is recovered from aqueous liquors by stripping off gas water, de-acidifications, scrubbing and withdrawing ammonia from the top of a scrubbing column.