Notes

Application of biomass boiler and also wood pellet fuel<br>
Under the pressure of environmental management as well as power situation, many nations has actually executed policies to cut exhaust and promote brand-new energy. Under this problem, a growing number of coal-fired boilers have actually been changed by, or updated into biomass central heating boiler



Conventional coal-fired boilers discharge a great deal of black smoke as well as sulfur gas. Some of them are not outfitted with desulfurizer. They will certainly contaminate the surrounding areas. To change them with gas and also electrical power needs way too much initiatives and also price, so many coal-fired central heating boiler proprietor use biomass fuel to change coal. Considering most coal-fired central heating boilers are unfit for biomass fuel, there are specific biomass fuel burning gadgets to fix this issue. They are developed based on the qualities of biomass fuel and also decrease the contaminant exhaust.



Various kinds of biomass pellet central heating boiler

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



According to their objective, biomass boilers can be identified into biomass thermal central heating boiler as well as biomass electric power boiler They both produce power by burning biomass gas. Biomass thermal central heating boiler usage thermal energy, while biomass electrical power boiler turn the thermal energy right into electric power. Biomass thermal boiler is still the most popular type, whose innovation is fully grown.



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



Little biomass central heating boiler

These boilers uses solid or gasified biomass gas They create warmth in the form of warm water. Tiny biomass boiler includes small quantity, basic framework, affordable price, however it has low energy conversion performance and also low energy supply. Small biomass boiler is mostly for home heating in rural areas and also warm water supply.



Large-scale biomass boiler.

These sort of biomass central heating boiler usage solid biomass fuel as well as offer warm water or steam. The modern technology is mature, the energy supply is high, as well as the energy loss is low. But some biomass central heating boiler has gas cocking owing to not enough burning, and the assistance center is not excellent.



Basic material for biomass central heating boiler.

Biomass boiler has broad source of basic materials. All photosynthetic plants can be used as basic materials, including sawdust, timber chips, rice husk, sunflower seed shell, sorghum stalk, corn stalk, bean stalk, and so on. By high-heat and also high-pressure processing in the molding tools, these biomass materials are molded into columnar biomass fuel. They are fed into biomass boilers to generate warmth.



Two usual biomass gas.

Generally, biomass molding fuel has 2 types-- biomass briquettes and also timber pellet gas. The size 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 size. They are made by timber pellet mill. Wood pellet fuels gradually replace biomass briquettes owing to high thickness, large application and convenient making use of. They burns a lot more completely than biomass briquettes.



Biomass pellet gas has fiber web content of 70%. The sulfur web content is much lower than coal High thickness makes it practical to shop and also transportation. It can be applied in different tools. fish food extruder machine burns completely, with much less smoke and ash web content, and also the combustion rate is 11% greater than coal.



Advantages of wood pellet fuel over coal.

Low carbon material: biomass fuels has at a lot of 50% carbon content, so the warm worth is lower than coal.

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

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

Low density: the density of biomass gas is less than coal. Loosen texture makes it less complicated to stress out. The recurring carbon is lower than coal ash.

Low sulfur content: the sulfur material in biomass gas are less than 0.12%. You do not require to install desulfurizer tool.

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

Waste recycle: the fostering of biomass fuel can make full use wastes, and eliminate their damage to atmosphere. Besides, the recurring ash after melting can be utilized to generate fertilizer.

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



Biomass boiler contamination discharge.

Biomass central heating boiler discharge small quantity of air contaminants, and solid waste that can be reused.



Polluting gases


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



Solid waste

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



By gearing up the biomass central heating boiler with desulfurizing and dirt getting rid of tool, we can lower the toxin discharge to minimum.



Environmental advantages of biomass central heating boiler

To change coal with biomass gas, we can minimize the toxin emission in atmosphere. At the same time, the web carbon discharge of biomass fuel is absolutely no, which can ease greenhouse effect.




Adoption of biomass fuel is an efficient way to utilize the plant waste. If poultry feed machine olx under natural problem, they will certainly produce a lot of methane, which has greater pollution. By making them into fuel, we can transform waste into wealth.



The recurring ash after melting can be made use of as potash plant food. This way, we attain the power reuse among straw-- gas-- fertilizer.


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