Combustion condition inside the furnace
Thread Content
Combustion takes place inside the boiler; under conditions of adequate air supply, proper grate speed, and high-quality coal, the flame is bright and golden in color. White light indicates that the air supply volume is greater than the air exhaust volume ； Dark red indicates that the air supply volume is less than the air exhaust volume. Is this statement correct? Fine ash and embers are spraying out from the gap between the grate drive shaft beneath the boiler’s coal bunker and the ash bin in front of the furnace – is this condition caused by positive pressure? However, it can be seen through the observation port that the furnace is not under positive pressure; when the cover of the observation port is opened, an air flow drawing inward can be clearly felt around the opening. What should be done in this situation? Fine ash is emitted in front of the furnace, there is a lot of dust, and the environment is very poor. Unhygienic. Do anyone have any good suggestions?
Fine ash and sparks emerging from the furnace may be caused by the air valve of the first air chamber of the boiler being opened too wide, resulting in an excessive amount of air flowing into that chamber; at the same time, the front arch does not effectively direct the air backward.
If the first air chamber is made smaller, will that affect the time it takes for the coal to burn in the furnace?
Does the flame inside the furnace keep swinging?
I think it is caused by the positive pressure inside the furnace, especially the positive pressure in the burner area.
It’s not a oil stove; it’s a coal stove. The flame does not swing from side to side. It’s completely normal.
The boiler has been in use for too long; perhaps the load was low in the past while it’s higher now. Hehe, just guessing – I’ve encountered such boilers before as well