How to solve the overpressure problem of coal-fired steam boiler?

The solution to overpressure problem of coal-fired steam boiler is very simple. First, we should quickly reduce the combustion of steam boiler and open the relief valve or exhausting valve via manual operation.

Then, increase the water supply and strengthen the drainage of the water drum to lower the temperature of boiler water and lower the pressure of boiler's steam drum. If the relief valve fails or the pressure gauge is damaged, the furnace should be stopped immediately and the pressure should be increased only after the relief valve and pressure gauge are repaired.

If the boiler gives overpressure indicator which affects boiler's safe operation, depressurization measures should be taken. However, please pay attention that depressurization can not be too fast. After the overpressure problem of steam boiler is solved, we should check the internal and external parts of boiler to ensure that everything is going well.