Factors for biomass boiler slagging
The slagging of biomass central heating boilers refers to the ash generated in the burning of biomass fuel. At high temperature, the ash remains in fluid or soft strong condition. Once they touch the heating surface area, they would abide by it and develop into slag.
Biomass gas make-up and also environmental medium
The ash melting point is impacted by the composition of biomass fuel and ecological tool. If there are incompletely ignited gas, they will certainly make the ecological medium weakly reductive, and lower the melting point. Under this problem, the ash are very easy to affix to the hearth as well as the wall of superheater. If the biomass gas has high moisture content, the steam will soften potassium, which is the major content in ash.
Pollutants in biomass fuels trigger slagging
A huge part of biomass fuels are made by more than 1 raw material. Sometimes they are mixed with dust and sand. These impurities altered the make-up and also melting temperature of biomass gas. With high ash and alkali metal content, these unclean biomass gas are less complicated to create slagging.
Insufficient air in central heating boilers for burning
Often the biomass fuels are dispersed erratically in central heating boilers. They come to be heat combustion mass as well as shed with not enough oxygen, which will trigger slagging. Insufficient air flow amount will certainly boost the slagging degree. Forchicken feed making machine for sale , to avoid biomass boiler slagging, you should regulate the percentage of gas and also air.
You can change the air proportion by eliminating some gas. Besides, slagging might emerge from central heating boiler problems. The feeding device can trigger gas stacking and also aggravate slagging.
Irregular warm distribution of central heating boiler surface
The boiler inside temperature and also warm distribution have fantastic effect on the slagging. As experience programs, slagging typically shows up in flue and also superheater surface area. When the liquid or soft solid ash approach the home heating surface, it don't have enough time to cool, so it is very easy to abide by the home heating surface area and gather. As researches proved, the higher the boiler temperature level, the even more slagging. Slagging influence the heat exchange of central heating boiler surface, block the flue, enhance the smoke circulation speed, and also aggravate the home heating surface area wear.
How to solve the slagging of biomass boilers?
Now we understand the slagging of biomass boilers occurs from the biomass fuel properties as well as central heating boiler style. To decrease the slagging, we must select top quality biomass pellets and also high-efficiency central heating boilers, as well as manage the feeding rate. Yet you can not remove slagging completely. You require to clean up the biomass boilers consistently.
Vapor soot blower
Generally, they utilize vapor residue blower to get rid of slagging in boilers, but the cleaning effect is barely satisfactory. They have to wash the boiler with high-pressure water.
The potassium in biomass gas create silicon in burning and also lower the softening temperature level to 800 , which remains in the series of superheater. So the soften ash is very easy to attach to the warm wall surface and also tough to be gotten rid of by steam residue blower
Besides, heavy steam soot blowers has following drawbacks. The boilers cleaned by heavy steam soot blower need to wait for 15 days for next use. The purging location is restricted, with some dead angles. As the residue blowing period is long, there are way too much ash deposited in the home heating surface.wood pellet making machine for salemight sintered as well as solidify, and also increase the cleansing problems.
defocusing prevention and pulse gas ash blower.
Nowadays, many biomass boilers take on defocusing inhibitor as well as pulse gas ash blower to fix biomass central heating boiler slagging as well as accomplished amazing effect.
Defocusing inhibitor is a gas additive with high melting point and combustion improver. When it is sprayed into the fireplace, it will mix with fly ash and stick to the half-melt ash. It will alter the melting point of ash and damage slagging. It can also develop metal film on the pipeline surface to stop acid dew point corrosion.
Pulse gas ash blower can clear the ash deposit on the boiler home heating surface by purging, acoustic exhaustion, thermal cleansing as well as regional vibration. Finally, the gas circulation take away the ash.
Pick the most effective means to resolve slagging issue
To make use of excellent quality biomass gas in central heating boilers can lower slagging, however the price will certainly raise. If you need to utilize poor quality biomass fuels, which has high wetness and also pollutants material, slagging is inescapable. To make certain the secure running of boilers, you can combine defocusing prevention and also pulse gas ash blower to successfully address the slagging trouble.
