Thermal efficiency data is very important for industrial boilers, which is directly related to the economic benefits of boiler users. It can be said that the design efficiency of the boiler determines the operating cost of the boiler. Generally speaking, the higher the thermal efficiency of the boiler, the greater the fuel consumption. Low, it will directly reduce the operating cost of the boiler.
At present, with regard to various furnace types such as oil-fired gas boilers and chain grate boilers, the average design thermal efficiency of domestic industrial boiler manufacturers is generally 70-90%, and the actual operating thermal efficiency is generally about 60-80%. Some small boiler manufacturers’ products Even below 50%. But in fact, there are ways to improve the thermal efficiency of industrial boilers. Let Zhengzhou Fangkuai Boiler Factory answer for you.
1. Increase effective use of heat, reduce boiler, exhaust heat loss and mechanical incomplete combustion loss.
1) Reduce the air leakage rate of the air preheater, especially the air leakage rate of the rotary air preheater.
2) Strictly control the water quality index of the boiler boiler water. When the scale content in the water wall tube reaches 400mg/m, it should be pickled in time.
3) Try to burn fuels with high calorific value to reduce the air temperature at the inlet of the air preheater. Modern large-capacity power generation boilers are equipped with air preheaters to prevent condensation on the heating surface of the cold front end of the air preheater, leading to air preheating The device is corroded at low temperature.
4) Adjust the combustion conditions according to the boiler load and time, reasonably distribute the air, and reduce the flame center position of the furnace as much as possible, so that the fuel can be fully burned in the furnace.
5) To reduce the heat loss of the boiler, it is mainly to strengthen the maintenance and repair of the boiler pipe and the insulation layer of the body.
2. Scientific coal-burning ratio, rigorous process operation, improving air distribution, adding additives, etc.
