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At the Technical University of Dresden a 50 kW test rig has been reconstructed to suit Oxyfuel conditions. The rig is fired with pulverised coal, especially lignite.
The 2.5 meters long facility is equipped with both a primary and a secondary recycle flow and has been used to, for example, test the dynamic behaviour of when shifting from air to Oxyfuel combustion mode, and vice versa. Another focal area of research works is formed by flue gas scrubbing and conditioning of the separated CO2. The influence of the novel flue gas composition on the desulphurisation process, for example, is being assessed with the help of a small scrubber linked to the pulverised lignite combustion test rig. In parallel, the innovative process of distillative flue gas desulphurisation is being investigated on an experimental basis. It would permit simultaneous separation of further pollutants and hence be particularly well suited for the Oxyfuel process.
The test rig at TU Dresden
Photo: TU Dresden
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