Weniger Stickoxide: Für die Rauchgasreinigung stehen unterschiedliche Verfahren in Konkurrenz

Stickoxide, die durch Verbrennungsprozesse bei hohen Temperaturen in Abfallanlagen entstehen, lassen sich durch chemische Verfahren reduzieren. Um die klimaschädlichen Schadstoffe in eine harmlose Form überzuführen, haben sich zwei Verfahren mit und ohne Einsatz von Katalysatoren etabliert. Beide haben ihre spezifischen Vor- und Nachteile.

Foto: ERC(05.05.2011) In der modernen Abfallbeseitigung werden Abfälle überwiegend thermisch behandelt. Wie auch bei anderen Arten von Verbrennungen kommt es hier zur Bildung von unerwünschten Schadstoffen. Eine wichtige Gruppe solche Schadstoffe ist die der Stickoxide (kurz NOx), die Verbindungen von Stickstoff und Sauerstoff beinhaltet. Hervorzuheben sind hierbei Stickstoffmonoxid (NO) und Stickstoffdioxid (NO2). Beide können die menschliche Gesundheit schädigen und werden für den sauren Regen mitverantwortlich gemacht. Sie entstehen bei hohen Temperaturen aus dem Sauerstoff und Stickstoff der Verbrennungsluft und dem im Brennstoff gebundenen Stickstoff. In Abfallverbrennungsanlagen stammt der größte Teil des Stickstoffes im NOx aus dem Brennstoffstickstoff...


Unternehmen, Behörden + Verbände: ERC Emissions-Reduzierungs-Concepte GmbH
Autorenhinweis: Philip Reynolds, ECR
Foto: ERC



Copyright: © Deutscher Fachverlag (DFV)
Quelle: Mai/Juni 2011 (Mai 2011)
Seiten: 3
Preis: € 0,00
Autor: Philip Reynolds

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