Investigation of the Mechanisms of Heat Exchanger Corrosion in a Municipal Waste Incineration Plant by Analysis of the Raw Gas and Variation of Operating Parameters

Autor: Jürgen Maguhn, Christian Deuerling, Hermann Nordsieck, Ragnar Warnecke, Ralf Zimmermann, Bernd Benker
Rok vydání: 2009
Předmět:
Zdroj: Heat Transfer Engineering. 30:822-831
ISSN: 1521-0537
0145-7632
Popis: The detailed mechanism of high temperature chlorine corrosion, the dominant cause of corrosion in a municipal solid waste incinerator (MSI), has still to be clarified. Upon its way through the boiler the raw gas is subject to various physical and chemical processes and interactions. Of these, sulfation of chlorides is supposed to have the major impact on chlorine corrosion. The physical and chemical mechanisms of corrosion were investigated at a municipal solid waste incinerator. Both the particulate and gas phases of the flue gas were chemically and physically analyzed during their way through the boiler, at temperatures from close to 1000°C down to 200°C. The raw gas composition was analyzed during normal operation and during the soot blowing cleaning routine. Additionally, operating parameters of the plant were varied, and deposition processes were evaluated with the aim to find out primary measures to reduce corrosion rates. The particle mass concentration exhibits a bimodal size distribution with max...
Databáze: OpenAIRE
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