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PROCESS FOR REDUCING COAL CONSUMPTION IN COAL FIRED POWER PLANT WITH FLUIDIZED-BED DRYING

机译:流化床干燥降低燃煤电厂煤耗的方法

摘要

The present invention relates to a process for reducing coal consumption in coal fired plant with fluidized-bed drying, namely a fluidized-bed drying system is provided between a coal powder bunker as well as a weighing belt and a coal grinding mill of the prior coal fired boiler generating set, and superheated steam which has done partial work is extracted from an steam turbine and used as a drying medium, moisture contained in the coal powder is evaporated with sensible heat and latent heat of the superheated steam, water resulted from the condensation of the superheated steam is fed into a deaerator of the steam turbine via a condensate pump for recirculation. The present invention has advantages of reducing coal consumption and saving coal, recovering residual heat, reducing emission of carbon dioxide and adopting to the national industrial policy on energy saving and emission reduction.
机译:本发明涉及一种通过流化床干燥减少燃煤电厂的煤炭消耗的方法,即在煤粉仓以及称量带与现有煤的磨煤机之间设置流化床干燥系统。燃烧锅炉发电机组,从蒸汽轮机中抽出已做部分工作的过热蒸汽作为干燥介质,将煤粉中的水分通过显热和潜热进行蒸发,冷凝产生水过热蒸汽的一部分通过冷凝泵供入蒸汽轮机的除气器中进行再循环。本发明具有减少煤炭消耗,节约煤炭,回收余热,减少二氧化碳排放,采用国家节能减排工业政策的优点。

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