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How to solve the slagging of biomass boilers
How to fix the slagging of biomass boilers?
Biomass boilers adopts biomass wastes or biomass pellets as fuel. In the burning of pellet gas, the volatiles develop into gas and also have complicated response with smoke and dirt, coagulate and abide by the heating pipe surface. The slagging and ash deposit will certainly affect the procedure and also safety of boilers. In this write-up, I will analyze the features of slagging, find out the factor of biomass boiler slagging, and advanced reliable options.

Factors for biomass boiler slagging
The slagging of biomass central heating boilers describes the ash generated in the burning of biomass gas. At heat, the ash remains in fluid or soft strong condition. Once they touch the heating surface area, they would abide by it as well as create into slag.

Biomass gas composition as well as ecological medium
The ash melting point is impacted by the composition of biomass gas and ecological tool. If there are incompletely combusted fish feed pellet mill , they will make the environmental medium weakly reductive, and also reduced the melting point. Under this condition, the ash are very easy to connect to the fireplace as well as the wall surface of superheater. If the biomass gas has high moisture content, the vapor will soften potassium, which is the major material in ash.

Pollutants in biomass gas cause slagging
A large part of biomass fuels are made by more than 1 resources. In some cases they are mixed with dust as well as sand. These pollutants altered the make-up as well as melting temperature level of biomass fuels. With high ash as well as alkali steel material, these unclean biomass gas are much easier to create slagging.

Not enough air in boilers for burning
Sometimes the biomass gas are distributed erratically in boilers. They come to be high temperature burning mass as well as burn with not enough oxygen, which will certainly create slagging. Inadequate air flow amount will certainly raise the slagging degree. For that reason, to stay clear of biomass central heating boiler slagging, you must control the proportion of fuel and also air.

You can change the air proportion by removing some fuels. Besides, slagging may develop from central heating boiler troubles. The feeding device can trigger fuel piling and aggravate slagging.

paper pellet mill of boiler surface area
The boiler inside temperature and warm circulation have excellent effect on the slagging. As experience shows, slagging generally shows up in flue and superheater surface. When the fluid or soft solid ash move toward the home heating surface area, it don't have enough time to cool down, so it is very easy to abide by the heating surface area and also build up. As looks into verified, the higher the central heating boiler temperature, the more slagging. Slagging affect the heat exchange of central heating boiler surface area, block the flue, raise the smoke circulation speed, and aggravate the home heating surface area wear.

Exactly how to resolve the slagging of biomass boilers?
Now we understand the slagging of biomass central heating boilers develops from the biomass gas properties and boiler design. To reduce the slagging, we should choose high quality biomass pellets as well as high-efficiency central heating boilers, and also regulate the feeding speed. However you can't remove slagging completely. You need to clean up the biomass boilers regularly.


Steam residue blower
Typically, they use vapor soot blower to get rid of slagging in central heating boilers, but the cleansing effect is barely sufficient. They have to clean the central heating boiler with high-pressure water.

The potassium in biomass gas create silicon in burning as well as lower the softening temperature level to 800 ℃, which remains in the range of superheater. So the soften ash is very easy to attach to the heat wall surface and also tough to be eliminated by steam soot blower

Besides, vapor residue blowers has following negative aspects. The central heating boilers cleansed by vapor residue blower need to wait for 15 days for following usage. The purging location is limited, with some dead angles. As the soot blowing period is long, there are too much ash deposited in the home heating surface. They may sintered and also solidify, as well as increase the cleansing troubles.

defocusing prevention as well as pulse gas ash blower.
Nowadays, lots of biomass boilers embrace defocusing prevention and also pulse gas ash blower to address biomass boiler slagging as well as accomplished amazing impact.

Defocusing prevention is a gas additive with high melting point and also burning improver. When it is sprayed right into the hearth, it will certainly blend with fly ash and adhere to the half-melt ash. It will transform the melting point of ash and also destroy slagging. It can also form metal film on the pipe surface area to avoid acid humidity rust.

Pulse gas ash blower can clear the ash down payment on the central heating boiler heating surface area by removing, acoustic tiredness, thermal cleaning and also regional vibration. At last, the gas circulation remove the ash.

Pick the best means to solve slagging trouble
To use high quality biomass fuels in boilers can decrease slagging, however the cost will raise. If you have to make use of poor quality biomass fuels, which has high wetness and pollutants content, slagging is unavoidable. To guarantee the stable operating of central heating boilers, you can combine defocusing inhibitor as well as pulse gas ash blower to effectively resolve the slagging trouble.

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