Notes

Application of biomass central heating boiler and wood pellet fuel<br>
Under the pressure of environmental management as well as power crisis, several nations has accomplished policies to cut discharge as well as advertise brand-new energy. Under this condition, more and more coal-fired boilers have actually been changed by, or updated into biomass central heating boiler



Typical coal-fired central heating boilers give off a great deal of black smoke as well as sulfur gas. Several of them are not equipped with desulfurizer. They will pollute the surrounding locations. To replace them with gas as well as electricity needs excessive initiatives and expense, numerous coal-fired boiler proprietor use biomass gas to replace coal. Taking into image source -fired central heating boilers are unsuited for biomass gas, there are specialized biomass fuel burning devices to solve this issue. They are created based on the characteristics of biomass gas and also lessen the toxin emission.



Different sorts of biomass pellet central heating boiler

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



According to their purpose, biomass central heating boilers can be classified into biomass thermal boiler and biomass electric power central heating boiler They both generate power by melting biomass gas. Biomass thermal boiler use thermal power, while biomass electrical power boiler transform the thermal power right into electrical power. Biomass thermal boiler is still the most popular type, whose innovation is mature.



According to the scale, biomass thermal central heating boiler can be identified right into 2 kinds.



Little biomass central heating boiler

These central heating boilers utilizes solid or gasified biomass fuels They create heat in the form of hot water. Small biomass boiler includes tiny quantity, basic framework, low cost, but it has low power conversion efficiency and also reduced energy supply. Small biomass boiler is generally for house heating in rural areas as well as hot water supply.



Large biomass boiler.

These type of biomass central heating boiler use solid biomass gas as well as provide warm water or vapor. The modern technology is fully grown, the power supply is high, and the power loss is low. However some biomass boiler has fuel cocking owing to not enough burning, and the assistance center is not ideal.



Raw materials for biomass central heating boiler.

Biomass central heating boiler has vast resource of basic materials. All photosynthetic plants can be made use of as resources, including sawdust, wood chips, rice husk, sunflower seed covering, sorghum stalk, corn stalk, bean stalk, etc. By high-heat and also high-pressure handling in the molding equipment, these biomass products are built into columnar biomass fuel. They are fed into biomass central heating boilers to produce heat.



Two usual biomass gas.

Usually, biomass molding fuel has 2 kinds-- biomass briquettes and also timber pellet fuel. The size of biomass briquettes is greater than 15cm, the diameter is 30-40mm. They are made by biomass briquette press. Timber pellets is 6-8mm in size. They are made by wood pellet mill. Wood pellet fuels progressively replace biomass briquettes owing to high density, broad application as well as convenient using. They burns more adequately than biomass briquettes.



Biomass pellet gas has fiber content of 70%. The sulfur web content is much less than coal High density makes it hassle-free to store as well as transportation. It can be used in different tools. Biomass pellets burns adequately, with much less smoke as well as ash content, and the combustion speed is 11% more than coal.



Benefits of wood pellet fuel over coal.

Low carbon web content: biomass gas contends many 50% carbon web content, so the warmth value is lower than coal.

High hydrogen content: biomass fuels has even more volatiles, so they are easier to melt. The carbon and also hydrogen are combined right into reduced molecular hydrocarbon, which will certainly separate out volatiles at high temperature.


High oxygen content: biomass fuel has even more oxygen web content than coal, so the warmth worth is low.

Low density: the density of biomass fuel is lower than coal. Loosen up structure makes it simpler to wear out. The residual carbon is lower than coal ash.

Reduced sulfur web content: the sulfur material in biomass fuels are less than 0.12%. pellet machine alibaba do not need to install desulfurizer gadget.

Low carbon discharge: biomass gas is carbon-neutral, to put it simply, zero carbon discharge

Waste recycle: the fostering of biomass fuel can make complete use wastes, and also soothe their damages to setting. Besides, the residual ash after melting can be made use of to produce fertilizer.

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



Biomass central heating boiler contamination emission.

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



Contaminating gases

Biomass fuel creates little NOx as well as no Co2. The SO2 emission is less than 33.6 mg/m3, as well as the smoke and also ash discharge is lower than 46mg/m3. They are far less than the nationwide requirement.



Strong waste

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



By gearing up the biomass central heating boiler with desulfurizing as well as dust getting rid of tool, we can reduce the pollutant emission to minimum.




Environmental advantages of biomass boiler

To replace coal with biomass gas, we can lower the contaminant emission in atmosphere. Meanwhile, the internet carbon exhaust of biomass gas is zero, which can ease pollution.



Fostering of biomass gas is an effective means to use the plant waste. If these plant waste degeneration under natural problem, they will certainly generate a great deal of methane, which has higher greenhouse effect. By making them right into fuel, we can turn waste into riches.



The recurring ash after burning can be made use of as potash fertilizer. In this way, we attain the power recycle among straw-- gas-- fertilizer.


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