Notes

Application of biomass central heating boiler as well as timber pellet fuel<br>
Under the stress of environmental management as well as power situation, many nations has carried out plans to reduce discharge as well as promote brand-new energy. Under this condition, more and more coal-fired central heating boilers have actually been changed by, or upgraded into biomass boiler



Traditional coal-fired central heating boilers produce a lot of black smoke and sulfur gas. Several of them are not geared up with desulfurizer. They will certainly contaminate the surrounding areas. To replace them with gas as well as electricity requires too much efforts and cost, numerous coal-fired central heating boiler owner use biomass gas to replace coal. Taking into consideration most coal-fired boilers are unsuited for biomass fuel, there are customized biomass fuel burning devices to resolve this trouble. They are developed based upon the features of biomass fuel as well as decrease the toxin exhaust.



Different types of biomass pellet boiler

Biomass boiler embraces biomass energy, typically biomass pellets, as fuel. According to different power media, they can be identified into biomass steam boiler, biomass hot water central heating boiler, biomass warm blast stove, biomass thermal oil heating system.



According to their purpose, biomass central heating boilers can be identified into biomass thermal boiler as well as biomass electric power central heating boiler They both create power by shedding biomass fuels. Biomass thermal boiler use thermal power, while biomass electrical power boiler turn the thermal power right into electric power. Biomass thermal central heating boiler is still one of the most popular kind, whose technology is fully grown.



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




Small biomass central heating boiler

These boilers makes use of strong or gasified biomass gas They create warm in the form of warm water. Little biomass boiler features tiny volume, straightforward structure, low cost, but it has low power conversion effectiveness and low power supply. Little biomass central heating boiler is mainly for home heating in rural areas and hot water supply.



Large-scale biomass boiler.

These type of biomass boiler use strong biomass gas and also provide hot water or heavy steam. The technology is fully grown, the energy supply is high, and also the power loss is low. Yet some biomass boiler has fuel cocking owing to inadequate burning, and also the support center is not best.



Resources for biomass boiler.

Biomass central heating boiler has large source of basic materials. All photosynthetic plants can be utilized as basic materials, consisting of sawdust, wood chips, rice husk, sunflower seed covering, sorghum stalk, corn stalk, bean stalk, and so on. By high-heat and high-pressure handling in the molding equipment, these biomass products are built right into columnar biomass fuel. They are fed into biomass boilers to generate warm.



2 typical biomass fuels.

Normally, biomass molding gas has 2 types-- biomass briquettes and also timber pellet fuel. 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. Richi machinery are made by timber pellet mill. Timber pellet gas gradually take the place of biomass briquettes owing to high thickness, vast application as well as hassle-free utilizing. They burns much more sufficiently than biomass briquettes.



Biomass pellet gas has fiber content of 70%. Richi machine is much lower than coal High thickness makes it convenient to store and transport. It can be used in different tools. Biomass pellets burns completely, with much less smoke and ash web content, as well as the burning rate is 11% more than coal.



Advantages of timber pellet fuel over coal.

Low carbon web content: biomass fuels has at the majority of 50% carbon content, so the warm value is lower than coal.

High hydrogen web content: biomass fuels has more volatiles, so they are less complicated to shed. The carbon and hydrogen are integrated into reduced molecular hydrocarbon, which will certainly separate out volatiles at heat.

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

Low density: the density of biomass fuel is less than coal. Loosen up appearance makes it simpler to stress out. The residual carbon is less than coal ash.


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

Reduced carbon emission: biomass fuel is carbon-neutral, in other words, absolutely no carbon discharge

Waste recycle: the fostering of biomass gas can make complete use wastes, and eliminate their damage to environment. Besides, the residual ash after shedding can be used to create fertilizer.

Combined shooting: Biomass fuel can be melted along with coal and also improve the burning efficiency.



Biomass central heating boiler pollution exhaust.

Biomass boiler send out small quantity of air toxins, and solid waste that can be reused.



Contaminating gases

Biomass gas generates little NOx and no carbon dioxide. The SO2 exhaust is lower than 33.6 mg/m3, as well as the smoke and also ash emission is lower than 46mg/m3. They are much less than the national requirement.



Solid waste

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



By furnishing the biomass central heating boiler with desulfurizing and dust eliminating gadget, we can minimize the pollutant discharge to minimum.



Environmental benefits of biomass central heating boiler

To change coal with biomass fuel, we can decrease the pollutant emission in atmosphere. Meanwhile, the web carbon exhaust of biomass fuel is no, which can alleviate greenhouse effect.



Fostering of biomass fuel is a reliable method to utilize the plant waste. If these plant waste decay under all-natural condition, they will generate a great deal of methane, which has greater pollution. By making them right into gas, we can transform waste into wealth.



The residual ash after melting can be used as potash fertilizer. By doing this, we achieve the energy reuse among straw-- fuel-- fertilizer.


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