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This work deals advanced information on the effect of alkali metal sorbents on the release and capture of trace elements, with special focus on potassium and sodium, during combustion of straw. Investigated sorbents were fly ash, bentonite, kaoline and bauxite. The lab-scale release and sorption experiments were done with pure straw and straw/sorbent mixtures at 1200°C. The hot gas was analysed by...
Na-, K-, Cl-, and S-species released during thermal conversion of coal can cause several problems such as fouling, slagging and corrosion, especially in gas turbines and heat recovery systems. To reduce this problems an enhanced understanding of the underlying release mechanisms for Na-, K-, Cl-, and S-species is needed. Therefore, basic investigations have been performed in an atmospheric lab-scale...
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