Process and apparatus for continuously monitoring waste gas from an incinerator plant

US5277056A · kind A · utility

Assignee

• Kernforschungszentrum Karlsruhe GmbH · DE

Inventors

• Hartmut Braun · Karlsruhe, DE
• Andreas Gerig · Karlsruhe, DE

Key dates

• Filing date: Jun 3, 1991
• Grant date: Jan 11, 1994
• Expiry date: Jun 3, 2011

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N33/0045
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Process for the continuous monitoring of waste gas from an incinerator plant, which contains volatile mercury halides and optionally metallic mercury in the form of vapor, with respect to the entire mercury content, of the waste gas taking a continuous test gas stream from the waste gas, cooling the test gas stream to form a condensate which contains a reducing agent, continuously passing the test gas stream into contact with the condensate to reduce the mercury halides contained in the test gas stream to metallic mercury by the reducing agent contained in the condensate, and subsequently determining the entire metallic mercury content by analysis of the test gas stream.