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Just how to address the slagging of biomass central heating boilers?<br>
Biomass central heating boilers takes on biomass wastes or biomass pellets as fuel. In the burning of pellet fuels, the volatiles turn into gas as well as have actually complicated response with smoke as well as dirt, coagulate and abide by the home heating pipeline surface. The slagging and also ash deposit will influence the procedure as well as safety and security of boilers. In this short article, I will certainly evaluate the functions of slagging, learn the factor of biomass boiler slagging, and put forward reliable options.



Factors for biomass central heating boiler slagging


The slagging of biomass boilers describes the ash generated in the burning of biomass gas. At heat, the ash remains in liquid or soft solid status. Once they touch the home heating surface area, they would certainly abide by it and form right into slag.



Biomass gas make-up as well as environmental tool

The ash melting point is impacted by the structure of biomass fuel as well as environmental medium. If there are incompletely combusted fuels, they will certainly make the ecological tool weakly reductive, and also lower the melting point. Under Richi machine , the ash are very easy to connect to the hearth as well as the wall of superheater. If the biomass fuel has high wetness web content, the steam will certainly soften potassium, which is the major content in ash.



Pollutants in biomass gas trigger slagging

A huge part of biomass gas are made by greater than 1 resources. In some cases they are combined with dust and sand. These pollutants changed the structure and melting temperature of biomass gas. With high ash and alkali metal material, these impure biomass fuels are simpler to cause slagging.



Not enough air in boilers for burning

Occasionally the biomass gas are distributed unevenly in central heating boilers. They end up being heat burning mass as well as shed with not enough oxygen, which will certainly cause slagging. Inadequate air flow quantity will increase the slagging level. Therefore, to prevent biomass central heating boiler slagging, you need to manage the percentage of fuel and air.



You can change the air percentage by getting rid of some gas. Besides, slagging might arise from boiler troubles. The feeding tool can cause gas piling and also exacerbate slagging.



Uneven warmth circulation of boiler surface

The central heating boiler inside temperature level and also warmth circulation have terrific impact on the slagging. As feed pellet extruder shows, slagging generally appears in flue and also superheater surface area. When the liquid or soft solid ash approach the heating surface, it don't have adequate time to cool down, so it is simple to adhere to the home heating surface area and also build up. As researches proved, the greater the boiler temperature level, the more slagging. Slagging affect the heat exchange of central heating boiler surface, obstruct the flue, boost the smoke flow rate, and also exacerbate the heating surface wear.



Exactly how to resolve the slagging of biomass boilers?

Currently we know the slagging of biomass central heating boilers occurs from the biomass gas residential properties as well as central heating boiler layout. To decrease the slagging, we should choose top quality biomass pellets and also high-efficiency boilers, and also manage the feeding speed. Yet you can not eradicate slagging entirely. You need to clean up the biomass central heating boilers frequently.




Vapor residue blower

Commonly, they use heavy steam residue blower to remove slagging in central heating boilers, but the cleansing result is hardly satisfactory. They have to clean the central heating boiler with high-pressure water.



The potassium in biomass fuel produce silicon in burning as well as lower the softening temperature to 800 ℃, which remains in the range of superheater. So the soften ash is very easy to connect to the warm wall and also tough to be eliminated by vapor soot blower



Besides, vapor residue blowers has adhering to drawbacks. The boilers cleaned by steam residue blower have to wait on 15 days for next use. The removing location is restricted, with some dead angles. As the residue blowing period is long, there are too much ash deposited in the heating surface area. They might sintered and also harden, as well as enhance the cleaning troubles.



defocusing prevention and also pulse gas ash blower.

Nowadays, several biomass boilers adopt defocusing inhibitor and also pulse gas ash blower to solve biomass boiler slagging and also accomplished exceptional impact.



Defocusing prevention is a gas additive with high melting point and also combustion improver. When it is splashed into the hearth, it will combine with fly ash and adhere to the half-melt ash. It will alter the melting point of ash as well as damage slagging. It can additionally form steel film on the pipe surface to avoid acid dew point deterioration.



Pulse gas ash blower can remove the ash down payment on the central heating boiler home heating surface by purging, acoustic fatigue, thermal cleaning and also neighborhood resonance. Finally, the gas flow take away the ash.



Pick the very best method to fix slagging issue

To use top quality biomass gas in boilers can reduce slagging, yet the price will raise. If you need to make use of poor quality biomass gas, which has high wetness and also contaminations content, slagging is unpreventable. To make sure the stable operating of boilers, you can incorporate defocusing prevention and pulse gas ash blower to successfully address the slagging problem.


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