High -efficient overcritical system of coal -fired unit

The utility model discloses a high -efficient overcritical system of coal -fired unit improves main steam and reheat steam's parameter, reduces whole heat rate, specifically: the pressure of the main steam of steam turbine high pressure cylinder of discharging from the over heater of boiler is...

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Bibliographische Detailangaben
Hauptverfasser:	SU YAOQUAN, CHEN HUAN, YU YONGQIANG, PENG HULAO, YANG YANGZHUANG, SHENG DAWEI, HUANG XIANHONG, HU BIN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING ENGINE PLANTS IN GENERAL ENGINE PLANTS NOT OTHERWISE PROVIDED FOR ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING STEAM ACCUMULATORS STEAM ENGINE PLANTS STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	The utility model discloses a high -efficient overcritical system of coal -fired unit improves main steam and reheat steam's parameter, reduces whole heat rate, specifically: the pressure of the main steam of steam turbine high pressure cylinder of discharging from the over heater of boiler is less than 25MPa ( rated condition ), and the temperature is for being higher than 560 DEG C and be less than or equal 620 DEG C ( rated condition ), the main steam forms reheat steam after the steam turbine high pressure cylinder returns boiler reheating, reheat steam's pressure is less than 4.96MPa ( rated condition ), and the temperature just is less than or equals 620 DEG C ( rated condition ) for being higher than 560 DEG C, the utility model discloses based on the main steam of optimization and improvement and reheat steam's parameter, can effectively improve the efficiency of unit, the energy saving moves the safety and stability, reduces the pollution to the environment.