The boiler burner provides the heat required to convert the water in the boiler into steam and is attached to the boiler. Think of the burner as an industrial blowtorch pushing heat into the boiler. It increases based on steam demand
Or reduce the amount of heat injected.
boiler burner fuel
The burner works by mixing air and fuel together to create an efficient flame inside the boiler. The type of burner and fuel availability will determine which fuel you use, but usually it will be one of the following!
. natural gas
. propane
. biogas
. #2 Fuel
. heavy oil
. Solid fuels (such as wood or coal)
· Tallow
The Importance of Air and Burners
In order to burn this fuel effectively, the burner must have the correct amount of air available. This is why the air-fuel ratio is a key indicator to ensure efficient operation of the burner. When the ratio of fuel to air is abnormal, unburned fuel can be deposited in the furnace tubes as soot. This directly affects the ability of heat to transfer from the pipe to the surrounding water and will reduce steam output.
When drawing outside air to supply the burner, you must also consider the temperature of the air, which can cause combustion problems when the temperature of the air supply to the burner fluctuates significantly. We usually start to see burning after a temperature change of 15 to 20 degrees.
Burn throttling is one way to ensure this doesn't happen in your system. If you are bringing in outside air, you should generally do this on a seasonal basis. This is caused by temperature changes that affect burner combustion.
Boiler burner by-products
Once the correct fuel to air ratio is achieved, the burner must ignite the mixture and demonstrate a flame. The result of combustion is the production of carbon monoxide, carbon dioxide, nitrogen oxides, particulate matter and other by-products. Environmental regulations at the federal, state, and local levels focus on setting limits on the production of these byproducts. You can meet these regulations through pre- and post-combustion methods
Depending on the by-products you want to reduce, there are a number of different ways to address these issues. For example, by increasing boiler efficiency, the load on the system can be reduced. This in turn will reduce carbon dioxide emissions. On the other hand, some low NOx burners are capable of reducing NOx production to levels below 10 ppm. This is usually achieved by lowering the flame temperature.