Notes

Application of biomass boiler and also timber pellet fuel<br>
Under the stress of environmental protection and also energy situation, many countries has actually accomplished plans to reduce discharge and advertise new power. Under this condition, a growing number of coal-fired boilers have actually been replaced by, or upgraded into biomass central heating boiler



Standard coal-fired central heating boilers discharge a great deal of black smoke as well as sulfur gas. Several of them are not equipped with desulfurizer. They will certainly pollute the surrounding areas. To replace them with gas and also electrical power requires excessive efforts as well as cost, many coal-fired boiler proprietor usage biomass fuel to replace coal. Considering most coal-fired central heating boilers are unfit for biomass gas, there are specialized biomass fuel burning devices to resolve this trouble. They are designed based upon the qualities of biomass gas as well as lessen the contaminant discharge.



Different types of biomass pellet central heating boiler

Biomass central heating boiler takes on biomass power, generally biomass pellets, as fuel. According to various power media, they can be classified right into biomass heavy steam central heating boiler, biomass warm water central heating boiler, biomass warm blast range, biomass thermal oil heater.



According to their purpose, biomass central heating boilers can be categorized into biomass thermal boiler and biomass electrical power central heating boiler They both create power by burning biomass fuels. Biomass thermal boiler use thermal power, while biomass electrical power boiler turn the thermal energy right into electric power. Biomass thermal central heating boiler is still one of the most preferred type, whose modern technology is mature.



According to the range, biomass thermal central heating boiler can be identified into 2 types.



Small biomass boiler



These boilers uses strong or gasified biomass fuels They create warmth in the form of warm water. Small biomass boiler features little volume, simple framework, low price, yet it has reduced energy conversion performance as well as reduced power supply. Small biomass boiler is primarily for house heating in rural areas as well as hot water supply.



Large biomass boiler.

These sort of biomass central heating boiler usage strong biomass fuel as well as offer hot water or steam. The modern technology is fully grown, the power supply is high, as well as the energy loss is reduced. But some biomass boiler has gas cocking owing to insufficient burning, as well as the assistance facility is not perfect.



Basic material for biomass central heating boiler.

Biomass central heating boiler has large resource of resources. All photosynthetic plants can be used as raw materials, consisting of sawdust, timber chips, rice husk, sunflower seed covering, sorghum stalk, corn stalk, bean stalk, and so on. By high-heat and also high-pressure handling in the molding tools, these biomass products are formed into columnar biomass fuel. They are fed into biomass central heating boilers to create warm.



2 usual biomass gas.

Generally, biomass molding gas has 2 kinds-- biomass briquettes and wood pellet gas. The length of biomass briquettes is greater than 15cm, the diameter is 30-40mm. They are made by biomass briquette press. Wood pellets is 6-8mm in diameter. They are made by timber pellet mill. Wood pellet gas gradually fill in biomass briquettes owing to high density, vast application and practical utilizing. They burns extra adequately than biomass briquettes.



Biomass pellet fuel has fiber web content of 70%. The sulfur content is far lower than coal High density makes it practical to store as well as transport. It can be used in different devices. animal feed pelletizer burns sufficiently, with much less smoke and also ash material, and also the burning rate is 11% higher than coal.



Advantages of timber pellet gas over coal.

Reduced carbon web content: biomass fuels contends the majority of 50% carbon content, so the warm value is less than coal.

High hydrogen content: biomass gas has more volatiles, so they are less complicated to burn. The carbon and hydrogen are combined right into low molecular hydrocarbon, which will separate out volatiles at heat.

High oxygen web content: biomass fuel has more oxygen material than coal, so the warm value is reduced.

Low density: the thickness of biomass gas is lower than coal. Loosen texture makes it much easier to burn out. The residual carbon is lower than coal ash.

Low sulfur content: the sulfur web content in biomass fuels are less than 0.12%. You don't need to install desulfurizer tool.

Low carbon exhaust: biomass fuel is carbon-neutral, in other words, no carbon discharge

Waste recycle: the adoption of biomass fuel can make complete use wastes, and also alleviate their damages to atmosphere. Besides, the residual ash after burning can be used to create plant food.

Mixed firing: Biomass gas can be melted along with coal as well as enhance the burning efficiency.



Biomass central heating boiler air pollution emission.

Biomass boiler give off small quantity of air toxins, and strong waste that can be recycled.



Contaminating gases

Biomass gas produces little NOx as well as no Co2. The SO2 discharge is lower than 33.6 mg/m3, as well as the smoke and ash emission is lower than 46mg/m3. chicken feed pellet mill are much less than the nationwide standard.



Strong waste

The primary strong waste of biomass central heating boiler is ash. They can be reused by made right into potash plant food.



By furnishing the biomass boiler with desulfurizing and also dirt removing device, we can reduce the pollutant emission to minimum.



Ecological benefits of biomass boiler

To change coal with biomass fuel, we can minimize the pollutant emission in ambience. At the same time, the net carbon discharge of biomass gas is zero, which can alleviate greenhouse effect.



Fostering of biomass gas is an effective means to make use of the plant waste. If these plant waste decay under all-natural problem, they will create a great deal of methane, which has greater greenhouse effect. By making them right into gas, we can transform waste right into riches.



The residual ash after burning can be used as potash fertilizer. This way, we achieve the power recycle amongst straw-- gas-- fertilizer.


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