Ten operational measures to improve the thermal economy of steam boilers

1. The main measures to improve the thermal cycle efficiency of steam boilers are that the main steam pressure, the main steam temperature, and the reheat steam temperature are kept at the specified values, the regenerative efficiency is normally input, the feed water temperature is at the design value, and efforts are made to reduce the back pressure of the steam turbine.

2. Improve the efficiency of the steam boiler, reduce the exhaust temperature of the steam boiler, the air leakage rate of the boiler, the combustible content of the fly ash, do the combustion test adjustment of the boiler system of the milling system, and develop the operation card of various working conditions as the operation of the operating personnel. in accordance with. It is necessary to do a good job of soot blowing and clearing according to the regulations, and do a good job of plugging the wind in the boiler so that the boiler is always kept in good working condition.

3. Strengthen fuel management, strictly measure, strictly control the quality of coal entering the plant, allow the coal quality to deviate from the design value within the limit value, especially the strict supervision of the volatile matter, ash, sulfur and coking characteristics of the coal, so that the boiler Can run under good conditions.

4. Improve equipment management level, strive to reduce internal and external leakage of thermal equipment and systems, and reduce working loss and heat loss.

5. Improve the economy of the auxiliary machine operation, reduce the losses of the auxiliary machine, and make it operate in the high efficiency area as much as possible. Through experiments, the reasonable operation mode of the auxiliary machine and its related systems under different operating conditions is determined, and efforts are made to reduce the power consumption rate of the plant.

6. Strictly control the chemical operation of boiler operation, strictly control the hardness of condensate, give water dissolved oxygen, feed water PH value, pot water, steam quality, prevent boiler, condenser, heater and other heating surfaces and turbine flow parts from corroding, Fouling and salt accumulation have caused the boiler operating conditions to deteriorate.

7. Improve the automation level of steam boiler operation, and maintain the operating parameters of the boiler at the specified values ​​through automatic control.

8. Measures should be taken to save power generation water, such as maintaining a reasonable concentration ratio of circulating water, increasing the gray water ratio of ash removal and comprehensive utilization of wastewater recovery.

9. Strengthen the metering work of the operation to quantitatively analyze the operating indexes of the boiler and provide a reliable basis for the economic operation of the steam boiler.

10. It is necessary to give full play to the role of the thermal test room of the power plant. In addition to regular testing and adjustment of the operation of the steam boiler, special tests and analysis should be conducted on the factors affecting the economic operation of the steam boiler.