Analyze the brief introduction of boiler waste heat recovery

Boiler waste heat recovery is to recover the wasted heat energy, which is one of the direct and economic methods to improve the power utilization rate, reduce production costs, and protect the environment. The exhaust temperature of boiler directly affects the economy of boiler unit and the safety of tail heating surface. Choosing a lower exhaust temperature can reduce the exhaust loss of the boiler.

It is beneficial to improve boiler thermal efficiency, save power and boiler operation cost. However, the decrease of exhaust temperature reduces the heat transfer temperature and pressure between the flue gas and the working medium in the tail heating surface, increases the heat transfer area, and increases the metal consumption and the initial investment of the equipment. In addition, the exhaust temperature is too low will cause the condensation of sulfuric acid steam in the tail flue, so that the low-temperature heating surface corrosion and ash blocking, so the exhaust temperature of most boilers is about 200℃.

The exhaust temperature of the boiler is generally 120 ° C ~350 ° C, and 7%~25% of the sensible heat and 15% of the latent heat in the flue gas are directly discharged into the atmosphere without being used. This not only forms a lot of power waste but also increases the thermal pollution of the environment.

On the one hand, the highly efficient flue gas waste heat recovery equipment we plan can not only meet the needs of processing domestic hot water or heating water, but also cool the boiler exhaust temperature to 100 degrees, making the boiler work efficiency significantly improved. On the other hand, it has also made due contributions to the national blue sky and white cloud environmental protection cause.