Notes

Application of biomass boiler and timber pellet fuel<br>
Under the stress of environmental protection as well as power situation, many countries has performed policies to reduce exhaust and also advertise new energy. Under this problem, an increasing number of coal-fired central heating boilers have been changed by, or updated right into biomass boiler



Traditional coal-fired central heating boilers discharge a lot of black smoke and sulfur gas. A few of them are not geared up with desulfurizer. They will pollute the bordering areas. To replace them with gas and also electricity requires way too much efforts as well as expense, many coal-fired boiler proprietor use biomass gas to replace coal. Taking into consideration most coal-fired central heating boilers are unsuited for biomass fuel, there are specialized biomass gas burning devices to resolve this issue. They are developed based on the features of biomass gas as well as minimize the contaminant exhaust.



Different sorts of biomass pellet boiler

Biomass central heating boiler adopts biomass power, normally biomass pellets, as fuel. According to various power media, they can be categorized right into biomass heavy steam boiler, biomass hot water central heating boiler, biomass warm blast stove, biomass thermal oil heater.



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



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



Small biomass boiler

These central heating boilers makes use of solid or gasified biomass gas They produce heat in the form of hot water. Tiny biomass central heating boiler features tiny quantity, basic framework, affordable price, but it has low power conversion performance as well as low energy supply. Little biomass central heating boiler is generally for home heating in backwoods and also warm water supply.



Massive biomass central heating boiler.

These sort of biomass central heating boiler usage strong biomass fuel and provide warm water or vapor. The technology is fully grown, the power supply is high, and the energy loss is low. But some biomass boiler has gas cocking owing to inadequate burning, and the support facility is not ideal.



Resources for biomass boiler.

Biomass central heating boiler has wide source of basic materials. he has a good point can be used as raw materials, including sawdust, timber chips, rice husk, sunflower seed covering, sorghum stalk, corn stalk, bean stalk, and so on. By high-heat as well as high-pressure processing in the molding tools, these biomass products are built right into columnar biomass gas. They are fed into biomass boilers to create heat.



2 common biomass gas.

Typically, biomass molding gas has 2 types-- biomass briquettes and also wood pellet fuel. The length 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 diameter. They are made by timber pellet mill. Wood pellet gas progressively take the place of biomass briquettes owing to high thickness, wide application as well as hassle-free making use of. biomass pellet machine burns a lot more adequately than biomass briquettes.



Biomass pellet gas has fiber material of 70%. The sulfur content is far lower than coal High density makes it convenient to shop and transportation. It can be applied in different equipment. Biomass pellets burns adequately, with much less smoke and ash material, and the combustion speed is 11% more than coal.



Advantages of wood pellet fuel over coal.

Low carbon web content: biomass gas has at many 50% carbon web content, so the warm worth is lower than coal.

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

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

Reduced density: the thickness of biomass gas is lower than coal. Loosen texture makes it much easier to stress out. The recurring carbon is lower than coal ash.

Reduced sulfur content: the sulfur content in biomass gas are less than 0.12%. You don't require to mount desulfurizer gadget.

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

Waste reuse: the adoption of biomass fuel can make complete use of wastes, as well as alleviate their damage to environment. Besides, the residual ash after shedding can be used to generate fertilizer.

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



Biomass boiler contamination emission.

Biomass central heating boiler give off small quantity of air toxins, as well as solid waste that can be reused.



Contaminating gases

Biomass fuel produces little NOx and no carbon dioxide. The SO2 exhaust is less than 33.6 mg/m3, and also the smoke and ash discharge is lower than 46mg/m3. They are far lower than the national criterion.



Strong waste

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



By equipping the biomass boiler with desulfurizing as well as dirt getting rid of gadget, we can reduce the toxin emission to minimum.



Ecological benefits of biomass central heating boiler

To change coal with biomass gas, we can decrease the contaminant exhaust in atmosphere. At the same time, the web carbon exhaust of biomass fuel is zero, which can ease greenhouse effect.



Fostering of biomass fuel is an efficient method to take advantage of the crop waste. If these crop waste decay under natural problem, they will certainly create a great deal of methane, which has higher greenhouse effect. By making them into gas, we can turn waste right into wealth.




The residual ash after melting can be made use of as potash plant food. By doing this, we accomplish the energy recycle among straw-- fuel-- plant food.



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