Entstickung integriert: Optimiertes Verfahren zum Emissionsschutz bei der Zementherstellung
Emissionen und Gerüche bei der Zementproduktion können durch ein Verfahren der regenerativ-thermischen Oxidation mit integrierter Entstickung komplett und rückstandsfrei vermieden werden. Wärmetauscher sorgen für eine weitgehende Energieeinsparung, und Stickoxide lassen sich im nachgeschalteten Prozess der Abluftreinigung zweistufig reduzieren.
(17.10.2011) Innerhalb des gesamten Produktionsprozesses von Zement spielt die Klinkererzeugung eine entscheidende Rolle: Energieverbrauch und Emissionen werden maßgeblich von diesem Teil des Herstellungsprozesses beeinflusst und haben damit auch unmittelbare Auswirkungen auf die Umwelt. Klinker wird aus dem vorgemahlenen Rohmehl, bestehend aus Kalkstein und Ton sowie diversen Zusätzen wie Quarzsand und Eisenträgern, gebrannt. Brennstoffenergie wird bei der Zementherstellung im Wesentlichen für das Brennen des Zementklinkers aufgewendet. Die Energiekosten machen etwa 40 bis 60 Prozent der gesamten Produktionskosten aus. Während im Drehrohrofen, dem zentralen Element der Klinkerproduktion, eine Temperatur von bis zu 2000 °Celsius herrscht, ist jene im nachgeschalteten Wärmetauscherturm deutlich niedriger. Der Wahl des Brennstoffes kommt daher entscheidende Bedeutung zu...
Foto: CTP
| Copyright: | © Deutscher Fachverlag (DFV) | |
| Quelle: | Oktober 2011 (Oktober 2011) | |
| Seiten: | 2 | |
| Preis inkl. MwSt.: | € 0,00 | |
| Autor: | Gerhard Philipp  Mag. Sophie Thalhammer | |
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