what causes horizontal boiler flameout

After the Horizontal Boiler flame-out and shut-down,we should pay special attention to prevent the furnace explosion.Furnace fuel supply must be cut off immediately,and check the gas supply (supply and return oil) solenoid valve to ensure that it is in the
closed state,and then manually shut down all running burner fuel supply valve.Operation action should be fast to avoid furnace explosion caused by that fuel continues or resumes to supply.And identify furnace flame-out reason at the same time and exclude faults found,and then start to do the preparatory work.Before starting,we should strengthen the Horizontal Steam Boiler ventilation, start to purge,purge time is more than 5min,then ignite according to the operating rules.
If the flame-out is caused by fan failure,should quickly close the fuel supply line valves doors,paying particular attention to fuel leakage caused by that the valve is not closed tightly. At the same time,start the ventilation and purging of furnace and gas duct in accordance with the emergency shutdown treatment.After the fan resumes the operation,then begins to ignite according to steps.
10 ton coal fired steam boiler for sale