Notes

Application of biomass boiler and also timber pellet fuel<br>
Under the stress of environmental management and also power crisis, several nations has actually accomplished plans to cut discharge as well as promote brand-new energy. Under this problem, more and more coal-fired boilers have actually been changed by, or upgraded into biomass central heating boiler



Typical coal-fired boilers give off a great deal of black smoke and sulfur gas. A few of them are not equipped with desulfurizer. They will certainly pollute the surrounding locations. To replace them with gas as well as power needs excessive efforts and also cost, a lot of coal-fired central heating boiler owner use biomass fuel to change coal. Thinking about most coal-fired central heating boilers are unsuited for biomass fuel, there are specific biomass fuel burning devices to address this issue. They are designed based on the qualities of biomass gas and decrease the toxin emission.



Different types of biomass pellet boiler

Biomass central heating boiler embraces biomass power, normally biomass pellets, as fuel. According to different power media, they can be categorized right into biomass vapor boiler, biomass hot water central heating boiler, biomass warm blast range, biomass thermal oil heater.



According to their purpose, biomass boilers can be classified into biomass thermal boiler and also biomass electric power boiler They both produce power by melting biomass fuels. Biomass thermal boiler usage thermal energy, while biomass electric power central heating boiler transform the thermal energy into electrical power. Biomass thermal central heating boiler is still one of the most prominent kind, whose technology is mature.



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



Little biomass central heating boiler


These central heating boilers utilizes strong or gasified biomass fuels They produce warmth in the form of hot water. Small biomass boiler includes tiny quantity, basic structure, low price, yet it has low energy conversion efficiency as well as reduced power supply. Small biomass boiler is generally for house heating in backwoods as well as warm water supply.



Large-scale biomass boiler.

These kind of biomass central heating boiler usage solid biomass gas and provide hot water or heavy steam. The modern technology is fully grown, the power supply is high, and the energy loss is low. However some biomass boiler has fuel cocking owing to not enough burning, as well as the assistance center is not perfect.



Basic material for biomass central heating boiler.

Biomass central heating boiler has broad source of basic materials. All photosynthetic plants can be utilized as raw materials, including sawdust, timber chips, rice husk, sunflower seed shell, sorghum stalk, corn stalk, bean stalk, etc. By mini wood pellet mill -heat and high-pressure processing in the molding devices, these biomass materials are built into columnar biomass gas. They are fed right into biomass central heating boilers to generate warm.



2 common biomass fuels.

Usually, biomass molding gas has 2 kinds-- biomass briquettes as well as wood pellet gas. The length of biomass briquettes is more than 15cm, the diameter is 30-40mm. animal feed pellet maker are made by biomass briquette press. Wood pellets is 6-8mm in diameter. They are made by timber pellet mill. Timber pellet gas slowly replace biomass briquettes owing to high density, large application as well as hassle-free using. They burns more completely than biomass briquettes.



Biomass pellet fuel has fiber material of 70%. The sulfur material is much lower than coal High thickness makes it practical to shop as well as transport. It can be used in different devices. Biomass pellets burns completely, with much less smoke and ash material, and also the combustion speed is 11% greater than coal.



Benefits of wood pellet fuel over coal.

Low carbon content: biomass gas contends most 50% carbon material, so the warm value is lower than coal.

High hydrogen material: biomass gas has more volatiles, so they are less complicated to shed. The carbon as well as hydrogen are incorporated into reduced molecular hydrocarbon, which will separate out volatiles at high temperature.

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

Reduced density: the thickness of biomass fuel is less than coal. Loosen appearance makes it much easier to burn out. The residual carbon is lower than coal ash.

Reduced sulfur web content: the sulfur web content in biomass fuels are less than 0.12%. You do not require to set up desulfurizer device.

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

Waste recycle: the fostering of biomass fuel can make full use wastes, as well as soothe their damage to atmosphere. Besides, the residual ash after shedding can be used to produce plant food.

Mixed shooting: Biomass gas can be burned along with coal and also boost the burning efficiency.



Biomass boiler pollution emission.

Biomass boiler send out small quantity of air contaminants, as well as solid waste that can be recycled.



Polluting gases

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



Strong waste

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



By outfitting the biomass boiler with desulfurizing and dust eliminating gadget, we can reduce the contaminant discharge to minimum.



Environmental benefits of biomass boiler

To replace coal with biomass gas, we can lower the pollutant emission in environment. At the same time, the net carbon emission of biomass fuel is no, which can relieve greenhouse effect.




Adoption of biomass gas is a reliable method to use the crop waste. If these crop waste degeneration under natural problem, they will certainly generate a lot of methane, which has greater pollution. By making them right into gas, we can turn waste into wealth.



The recurring ash after shedding can be utilized as potash plant food. This way, we achieve the power recycle amongst straw-- gas-- plant food.


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