How to reduce the fly ash combustibles in the boiler?

　　1. Properly increase the temperature of the pulverized coal in the pulverized warehouse.

　　2. Reasonably control the speed of the coal feeder, that is, the pulverized coal concentration.

　　3. Periodically blow soot to keep the boiler in good operating condition.

　　Fourth, appropriately reduce the primary air pressure and increase the primary air temperature as much as possible.

　　5. Reduce the fineness of coal powder as much as possible while ensuring the pulverizing output.

　　6. ​​Reasonably control the oxygen content in the furnace at 4~6℃, so that the combustion can be fully burned in the furnace.

　　Seven. Reasonably control the opening of the small air door of the secondary air to ensure proper secondary air pressure.

　　8. In a class, too many start and stop times of the coal mill will also increase the amount of combustible fly ash.

　　Nine, to reduce the fineness of pulverized coal, it is best to control the economic fineness of pulverized coal, generally control the fineness of pulverized coal to <10%.

　　10. Minimize the number of times that the coal feeder breaks coal, and organize personnel to deal with it in time to make the incoming coal normal.

　　11. Under the condition of ensuring the steam temperature, steam pressure and load, appropriately reduce the speed of the upper layer powder feeder and increase the speed of the lower layer powder feeder.

　　12. Ensure sufficient secondary air volume. Under the condition of maintaining stable combustion, the opening of the intermediate secondary air baffle should be properly increased to fully mix the air and powder.

　　13. Don't blindly pursue the reheating temperature and place the burner too high, and the flame center will move up, which will reduce the residence time of the pulverized coal in the furnace and it will not burn out.

　　14. Avoid coal blocking and coal breakage in the pulverizing system as much as possible, ensure the stable operation of the pulverizing system, maintain reasonable ventilation, and reduce the tertiary air volume.