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How to solve the slagging of biomass boilers?<br>
Biomass central heating boilers embraces biomass wastes or biomass pellets as gas. In the burning of pellet gas, the volatiles turn into gas and also have made complex reaction with smoke as well as dirt, coagulate and also abide by the heating pipe surface area. The slagging and ash deposit will certainly affect the operation and security of central heating boilers. In this short article, I will evaluate the features of slagging, find out the reason of biomass central heating boiler slagging, as well as put forward effective options.



Reasons for biomass boiler slagging

The slagging of biomass central heating boilers refers to the ash produced in the burning of biomass gas. At high temperature, the ash is in liquid or soft solid status. Once they touch the heating surface area, they would follow it as well as create right into slag.



Biomass gas structure as well as environmental medium

The ash melting point is impacted by the make-up of biomass gas and ecological medium. If there are incompletely ignited fuels, find more information will certainly make the ecological tool weakly reductive, as well as lower the melting point. Under this problem, the ash are very easy to affix to the fireplace and also the wall of superheater. If the biomass fuel has high wetness content, the steam will certainly soften potassium, which is the major material in ash.




Contaminations in biomass gas create slagging

A huge part of biomass gas are made by greater than 1 raw material. Occasionally they are mixed with dust as well as sand. These impurities changed the composition and melting temperature level of biomass gas. With high ash and alkali metal content, these unclean biomass fuels are easier to create slagging.



Insufficient air in central heating boilers for burning

Sometimes the biomass gas are distributed unevenly in boilers. They end up being heat burning mass as well as burn with not enough oxygen, which will create slagging. Not enough air flow amount will increase the slagging level. As a result, to stay clear of biomass boiler slagging, you must manage the percentage of fuel and also air.



You can readjust the air percentage by removing some gas. Besides, slagging may emerge from boiler issues. The feeding device can cause fuel stacking as well as aggravate slagging.



Unequal warm distribution of central heating boiler surface

The boiler inside temperature level and heat distribution have fantastic effect on the slagging. As experience shows, slagging typically appears in flue as well as superheater surface. When the fluid or soft solid ash move toward the heating surface area, it do not have enough time to cool, so it is easy to adhere to the heating surface and also accumulate. As investigates shown, the greater the boiler temperature, the even more slagging. Slagging influence the warm exchange of central heating boiler surface area, block the flue, enhance the smoke circulation rate, as well as exacerbate the home heating surface wear.



Exactly how to resolve the slagging of biomass central heating boilers?

Now we understand the slagging of biomass boilers arises from the biomass gas residential properties and also central heating boiler design. To decrease the slagging, we must select premium quality biomass pellets and high-efficiency central heating boilers, as well as regulate the feeding speed. But richi pellet machine can not eradicate slagging totally. You require to clean the biomass boilers regularly.



Heavy steam soot blower

Commonly, they make use of heavy steam soot blower to remove slagging in boilers, yet the cleansing impact is barely acceptable. They have to clean the central heating boiler with high-pressure water.



The potassium in biomass fuel generate silicon in burning and also lower the softening temperature to 800 ℃, which remains in the variety of superheater. So the soften ash is very easy to connect to the heat wall surface and also tough to be eliminated by steam residue blower



Besides, heavy steam soot blowers has complying with negative aspects. The boilers cleaned by steam residue blower have to await 15 days for next use. The purging area is restricted, with some dead angles. As the residue blowing interval is long, there are way too much ash deposited in the heating surface. They may sintered and also set, and increase the cleansing problems.



defocusing inhibitor and pulse gas ash blower.

Nowadays, numerous biomass boilers take on defocusing inhibitor as well as pulse gas ash blower to address biomass boiler slagging and attained impressive impact.



Defocusing inhibitor is a fuel additive with high melting point and burning improver. When it is splashed into the fireplace, it will certainly blend with fly ash and also adhere to the half-melt ash. It will change the melting point of ash and also destroy slagging. It can additionally create metal film on the pipeline surface area to stop acid humidity rust.



Pulse gas ash blower can remove the ash deposit on the boiler home heating surface area by removing, acoustic exhaustion, thermal cleaning and also neighborhood vibration. At last, the gas flow take away the ash.



Choose the most effective means to solve slagging trouble

To utilize top quality biomass gas in boilers can lower slagging, but the cost will certainly raise. If you have to use poor quality biomass fuels, which has high wetness and also pollutants web content, slagging is inevitable. To make certain the steady running of boilers, you can integrate defocusing prevention as well as pulse gas ash blower to efficiently address the slagging trouble.

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