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000021173 1001_ $$0P:(DE-Juel1)129688$$aBläsing, Marc$$b0$$eCorresponding author$$gmale$$uFZJ
000021173 245__ $$aRelease of Inorganic Trace Elements from High-Temperature Gasification of Coal
000021173 260__ $$aJülich$$bForschungszentrum Jülich GmbH Zentralbibliothek, Verlag$$c2012
000021173 300__ $$aXVIII, 145 S.
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000021173 4900_ $$0PERI:(DE-600)2445288-9$$aSchriften des Forschungszentrums Jülich : Energie & Umwelt / Energy & Environment$$v131$$x1866-1793
000021173 502__ $$aRWTH Aachen, Diss., 2011$$bDr.$$cRWTH Aachen$$d2011
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000021173 520__ $$aThe development of cleaner, more efficient techniques in next-generation coal power plants is becoming increasingly important, especially regarding to the discussion of the influence of CO$_{2}$ emissions on global warming. A pronising coal utilisaton process is the integrated gasification combined cycle process. The direct use of the raw gas requires gas clean-up to prevent downstream parts of the gasifier from several problems. An increased efficiency and a decreaed amount of harmful species can be achieved through hot fuel gas cleaning. This clean-up technique requires a comprehensive knowledge of the release characterictics of inorganic coal constituents. The aim of this thesis was to provide enhanced knowledge of the effect of key process parameters and of the chemical constitution of coal on the release of Na, K, S, and Cl species from high-temperature coal gasification. The experimental setup consisted of atmospheric flow tube furnaces and a pressurised furnace. In-situ analysis of the product gas was carried out using molecular beam mass spectrometry. A broad spectrum of different coals with assumed qualitive and quantitative differences in the release characteristics was investigated. Additionally, experiments with model substances were performed. The results of the experimental investigation were compared with thermodynamic calculations. Finally, recommendations, for the operation of a high-temperature gasifier are formulated.
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