In the engineer design stage, the boiler has design efficiency, but in general, the actual operation is similar to the initial design thermal efficiency. For example, the efficiency of oil-fired boilers is greater than 94%, and the efficiency of gas-fired boilers may usually be greater than 100%. However, the boiler efficiency is not fixed. If your equipment's operating efficiency is lower than the design efficiency, then measures can be taken to improve the boiler thermal efficiency.
Industrial steam boiler thermal efficiency is an important goal to clarify the economic function of the boiler. A high thermal efficiency indicates that the boiler is economical and wastes fuel to reduce the primary power consumption.
Improving the thermal efficiency of industrial steam boilers is to add ineffective application heat and increase the various heat losses of the boiler. The focus is to reduce the boiler exhaust heat loss and the loss of machinery not completely extinguished.
1.Reduce boiler exhaust heat 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 target of boiler water. When the scale in the water-cooled wall tube reaches 400mg / m, it should be pickled in time;
(3) Burn high-quality fuel with low sulfur content as much as possible and lower the air temperature at the inlet of the air preheater. The ancient large-capacity power generation boilers were equipped with air preheaters to avoid condensation on the heating front of the cold front end of the air preheater. Incurred high temperature corrosion of the air preheater.
2.Reduce the heat loss caused by mechanical failure
(1) Adjust the extinguishing conditions according to the boiler load and time, and reasonably distribute the air so that the fuel is fully extinguished in the furnace;
(2) Adjust the feeding amount according to the fuel volatile content and time to maintain the optimal amount of fuel.
3. Reduce the heat loss of the boiler, and enhance the maintenance and repair of the boiler pipes and the body insulation layer.
The above is the relevant method I have shared for you on how to improve the thermal efficiency of industrial steam boilers. I hope it will be helpful to everyone.
