Large -scale waste heat of boiler flue gas recycle system of thermal power plant

• Main Authors: ZHANG XUAN, ZHANG HONGKUI, ZHANG XUESUO, YIN TAOTAO, JIA YONGKE
• Format: Patent
• Language: English
• Published: 21.10.2015
• Subjects: AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHINBOILERS; BLASTING; COMBUSTION APPARATUS; COMBUSTION PROCESSES; CONTROLLING WATER LEVEL; FEED-WATER SUPPLY; FLUES; HEATING; LIGHTING; MECHANICAL ENGINEERING; PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER; REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTIONRESIDUES; STEAM GENERATION; WEAPONS

The utility model discloses a large -scale waste heat of boiler flue gas recycle system of thermal power plant belongs to the thermal power field. Including boiler (1), chimney (5) and flue, the flue connect boiler (1) afterbody and chimney (5), still include pre -heater (2), electrostatic precipitator (3), draught fan (4) and economizer (6), pre -heater (2), economizer (6), electrostatic precipitator (3), draught fan (4) set up in boiler (1) afterbody to the flue of chimney (5) at the interval in proper order, economizer (6) is connected play water end (W. E. ) and outside heater connection for the end of intaking with outside feedwater header. It have imitate to reduce power plant boiler flue gas heat, the consumption of desulfurizing tower cooling water less, advantage that heat utilization efficiency is high. Residual heat from flue gas utilizes the absorptive energy of system can be used for heat -setting water or improve the air supply temperature through fan heater heated air, improves unit efficiency.