Before a new boiler is put into operation, it must first be boiled, the rust and oil stains inside must be removed, and a protective film must be formed on the metal surface, otherwise the situation you mentioned will happen additionally. , water quality should be checked when the boiler is operating, use demineralized water and keep the pH of the pot water between 10 and 12. Here is a way to cook in the oven. (As I don't know your boiler size, the boiling pressure below may be different from your oven type, but other procedures are the same.)
Stove Baking Agent : trisodium phosphate 0.5%, hydrogen Sodium oxide 1%, sodium alkylsulfonate 0.05%, the specific quantity is calculated based on the total water capacity of your boiler.
Purpose of the boiling: Because the collector of the heating surface pipe system and the steamr of the newly installed boiler If contaminants such as oil rust and other contaminants on the inner wall of the package are not removed before operation, they will partially adhere to the tube wall to form hard attachments , resulting in a reduction in the thermal conductivity of the heating surface, thus affecting the thermal efficiency of the boiler and accelerating the speed of the boiler, so an alkaline boiling furnace is necessary.
Boiler Procedure:
1. Add water to the boiler to the lowest visible edge of the water level meter
2. Mix all chemicals with water. prepare a 20% solution. Add to the boiler.
3. Adjust the boiler water level slightly below the normal water level
4. Light and start the furnace
5. at 0.2 MPa, check all pipes, valves, manholes, hand holes, etc., and adjust the levelboiler water at the highest working water level
6. Increase the pressure to 0.4 MPa and maintain the pressure for 0.2 MPa. 12 to 4 p.m. During this period, vent steam regularly and refill water in time to maintain the highest water level
7. for 24 hours
8. Stop the sewage discharge and water supply during the period after boiling, and maintain the water level
9. Stop burning after boiling, use waste water drainage methods and fill with water to reduce pressure and reduce pot water alkalinity
10. When the pressure drops to 0.3MPa and the furnace temperature drops below 200℃, quickly drain all the water from the pot and open the boiler manhole and handhole to check the effect of 'boiling.
Note: You do not need to do point 10. When the alkalinity of the pot water drops below 24mmol/L and the pH drops to 10~12, you can stop draining the sewage and change the water. , and put it into operation directly.