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The properties of chars derived from coals of a wide range of rank produced in wire-mesh (WMR) and entrained-flow (EFR) reactors were compared. The WMR was operated at atmospheric pressure of helium or nitrogen with heating rates of 2-5000 K s -1 , temperatures up to 1773 K and residence time of 2-30 s. The EFR was operated at 1273 K with a residence time of 1 s in nitrogen at atmospheric...
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