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How to solve the slagging of biomass boilers
Just how to address the slagging of biomass central heating boilers?
Biomass boilers embraces biomass wastes or biomass pellets as gas. In the burning of pellet gas, the volatiles turn into gas and also have actually complicated response with smoke as well as dirt, coagulate and also adhere to the home heating pipe surface. The slagging and ash deposit will certainly influence the operation and safety of boilers. In this write-up, I will evaluate the features of slagging, discover the reason of biomass boiler slagging, and also advanced effective services.

Factors for biomass boiler slagging
The slagging of biomass central heating boilers describes the ash created in the burning of biomass gas. At high temperature, the ash is in fluid or soft solid status. Once they touch the heating surface, they would certainly abide by it and also develop right into slag.

Biomass gas structure as well as ecological medium
The ash melting point is impacted by the composition of biomass fuel and environmental tool. If there are incompletely ignited fuels, they will make the environmental tool weakly reductive, and also reduced the melting point. Under this condition, the ash are easy to attach to the hearth and the wall surface of superheater. If the biomass fuel has high wetness web content, the vapor will certainly soften potassium, which is the major material in ash.

Impurities in biomass fuels create slagging
A big part of biomass gas are made by more than 1 resources. Sometimes they are blended with dirt as well as sand. These pollutants changed the composition as well as melting temperature of biomass gas. With high ash as well as alkali steel content, these unclean biomass fuels are simpler to create slagging.

Insufficient air in boilers for burning
Sometimes the biomass gas are distributed unevenly in central heating boilers. They end up being heat burning mass and burn with inadequate oxygen, which will certainly trigger slagging. Insufficient air flow quantity will certainly enhance the slagging degree. For that reason, to prevent biomass boiler slagging, you should manage the proportion of fuel and air.

You can adjust the air proportion by removing some gas. Besides, slagging might develop from boiler issues. The feeding device can create gas piling and intensify slagging.


Irregular warmth circulation of central heating boiler surface area
The central heating boiler inside temperature as well as heat circulation have excellent influence on the slagging. As manual pellet mill shows, slagging normally shows up in flue and superheater surface area. When the liquid or soft strong ash approach the home heating surface, it don't have adequate time to cool, so it is easy to stick to the heating surface area and also collect. As durable small pellet mill shown, the higher the central heating boiler temperature, the more slagging. Slagging affect the warm exchange of central heating boiler surface, block the flue, raise the smoke circulation rate, as well as aggravate the home heating surface area wear.

Just how to address the slagging of biomass central heating boilers?
Currently we know the slagging of biomass central heating boilers develops from the biomass fuel properties and boiler design. To minimize the slagging, we ought to pick excellent quality biomass pellets and also high-efficiency central heating boilers, as well as control the feeding rate. But you can not eliminate slagging entirely. You need to clean the biomass central heating boilers on a regular basis.

Steam soot blower

Traditionally, they make use of vapor soot blower to eliminate slagging in central heating boilers, but the cleaning effect is hardly satisfying. They have to wash the boiler with high-pressure water.

The potassium in biomass gas generate silicon in burning as well as lower the softening temperature to 800 ℃, which is in the series of superheater. So the soften ash is easy to attach to the heat wall as well as difficult to be gotten rid of by steam residue blower

Besides, vapor soot blowers has complying with downsides. The boilers cleaned up by heavy steam residue blower have to await 15 days for following usage. The removing location is limited, with some dead angles. As the soot blowing period is long, there are excessive ash transferred in the heating surface area. They might sintered and also solidify, and boost the cleansing difficulties.

defocusing inhibitor and pulse gas ash blower.
Nowadays, many biomass central heating boilers take on defocusing prevention as well as pulse gas ash blower to address biomass central heating boiler slagging and also achieved amazing result.

Defocusing inhibitor is a fuel additive with high melting point as well as burning improver. When it is sprayed right into the hearth, it will mix with fly ash as well as adhere to the half-melt ash. It will certainly alter the melting point of ash as well as destroy slagging. It can also form steel movie on the pipeline surface area to prevent acid dew point rust.

Pulse gas ash blower can get rid of the ash deposit on the central heating boiler heating surface by purging, acoustic exhaustion, thermal cleaning and neighborhood resonance. At last, the gas flow take away the ash.

Select the most effective means to resolve slagging problem
To make use of high quality biomass fuels in central heating boilers can minimize slagging, but the expense will certainly increase. If you need to use low quality biomass fuels, which has high moisture as well as contaminations content, slagging is unpreventable. To ensure the secure operating of central heating boilers, you can incorporate defocusing inhibitor and pulse gas ash blower to properly resolve the slagging trouble.


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