ThyssenKrupp Polysius preparing to build oxyfuel kiln at Mergelstetten cement plant

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Germany: ThyssenKrupp Industrial Solutions’ Polysius division says that it has been commissioned by Buzzi Unicem, HeidelbergCement, Schwenk Zement and Vicat to build a pure oxyfuel kiln system at the Mergelstetten cement plant as part of the Cement Innovation for Climate (CI4C) project. No dates of the start of construction or final project commissioning of the industrial trial have been disclosed. CI4C was originally formed in 2019.

The Polysius pure oxyfuel process is a new type of clinker production process in which the otherwise normal ambient air is replaced by pure oxygen in the kiln combustion process. One advantage of the technology is that atmospheric nitrogen is eliminated from the clinker burning process leading to much higher concentrations of CO2 in the exhaust gas compared to a conventional kiln. As such the process aims to concentrate, capture and reuse almost 100% of the CO2 produced in a cost-effective manner. The medium-term goal is to further process the captured CO2 with the help of renewable energy into products such as kerosene for air traffic.

Last modified on 08 June 2022

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