Iron and steel plant subcritical residual energy waste heat recovery power generation system and working method thereof

The invention provides an iron and steel plant subcritical residual energy waste heat recovery power generation system and a working method thereof. The system and the working method are used for recovering valuable waste heat steam generated by a boiler of an iron and steel plant to a condensing su...

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Bibliographische Detailangaben
Hauptverfasser:	QIU RUIFEI, LIN JINHUI, XU JIANFEN, MAO QIZHOU, PENG LONG, CHEN SHAOFENG, FANG GUIPING, CHEN SHAOZHEN, WU JINLING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE ENGINE PLANTS IN GENERAL ENGINE PLANTS NOT OTHERWISE PROVIDED FOR ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES FURNACES HEATING KILNS LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES OVENS RETORTS STEAM ACCUMULATORS STEAM ENGINE PLANTS STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	The invention provides an iron and steel plant subcritical residual energy waste heat recovery power generation system and a working method thereof. The system and the working method are used for recovering valuable waste heat steam generated by a boiler of an iron and steel plant to a condensing supplementing type steam turbine unit for power generation, the boiler comprises a blast furnace gas boiler for generating subcritical ultra-high-temperature steam, a medium-pressure waste heat boiler for generating medium-pressure superheated steam and a low-pressure waste heat boiler for generatinglow-pressure superheated steam or low-pressure saturated steam; subcritical ultra-high-temperature steam generated by the blast furnace gas boiler is sent to a high-pressure cylinder of a steam turbine and is changed into medium-pressure superheated steam after doing work; medium-pressure superheated steam discharged by the high-pressure cylinder of the steam turbine and medium-pressure steam generated by the medium-press