Notes

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



Traditional coal-fired boilers send out a lot of black smoke and also sulfur gas. Several of them are not outfitted with desulfurizer. They will contaminate the surrounding locations. To change them with gas and electricity requires way too much initiatives and cost, many coal-fired boiler proprietor use biomass fuel to change coal. Thinking about most coal-fired boilers are unsuited for biomass fuel, there are specific biomass gas burning gadgets to solve this issue. They are designed based upon the characteristics of biomass fuel as well as decrease the toxin discharge.



Various sorts of biomass pellet boiler

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



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



According to the range, biomass thermal central heating boiler can be categorized into 2 kinds.



Little biomass boiler

These boilers uses strong or gasified biomass fuels They produce warm in the form of warm water. richi pellet includes small volume, simple structure, small cost, yet it has low energy conversion performance as well as reduced energy supply. Small biomass boiler is mainly for residence heating in backwoods and also hot water supply.




Large biomass central heating boiler.

These type of biomass boiler use strong biomass gas as well as give warm water or heavy steam. The technology is mature, the power supply is high, and also the power loss is reduced. But some biomass central heating boiler has fuel cocking owing to insufficient burning, and also the assistance center is not excellent.



Raw materials for biomass central heating boiler.

Biomass central heating boiler has wide source of basic materials. All photosynthetic plants can be made use of as raw materials, consisting of sawdust, timber chips, rice husk, sunflower seed shell, sorghum stalk, corn stalk, bean stalk, and so on. By high-heat and high-pressure handling in the molding devices, these biomass products are formed into columnar biomass gas. They are fed right into biomass boilers to generate warm.



2 common biomass fuels.

Typically, biomass molding fuel has 2 types-- biomass briquettes and timber pellet gas. 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 slowly replace biomass briquettes owing to high density, broad application and also convenient utilizing. They burns much more adequately than biomass briquettes.



Biomass pellet fuel has fiber material of 70%. The sulfur web content is much less than coal High thickness makes it convenient to shop as well as transport. It can be applied in various tools. Biomass pellets burns completely, with less smoke and also ash web content, and the burning rate is 11% greater than coal.



Advantages of wood pellet fuel over coal.

Low carbon material: biomass fuels contends most 50% carbon content, so the warmth worth is lower than coal.

High hydrogen content: biomass fuels has more volatiles, so they are less complicated to burn. The carbon as well as hydrogen are combined right into low molecular hydrocarbon, which will separate out volatiles at high temperature.

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

Low thickness: the density of biomass fuel is less than coal. Loosen up appearance makes it much easier to stress out. The recurring carbon is less than coal ash.

Reduced sulfur material: the sulfur web content in biomass fuels are less than 0.12%. You do not need to install desulfurizer device.

Low carbon emission: biomass fuel is carbon-neutral, simply put, no carbon exhaust

Waste reuse: the adoption of biomass fuel can make complete use wastes, and soothe their damages to setting. Besides, the recurring ash after melting can be utilized to produce plant food.

Blended firing: Biomass gas can be burned together with coal and boost the combustion performance.



Biomass central heating boiler pollution discharge.

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



Contaminating gases

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



Solid waste

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



By furnishing the biomass central heating boiler with desulfurizing and dust getting rid of device, we can reduce the toxin emission to minimum.



Environmental benefits of biomass boiler

To replace coal with biomass fuel, we can minimize the toxin exhaust in environment. At the same time, the web carbon emission of biomass gas is absolutely no, which can soothe pollution.



Fostering of biomass gas is an effective way to take advantage of the plant waste. If these crop waste decay under all-natural condition, they will certainly produce a great deal of methane, which has higher pollution. By making them into gas, we can turn waste into riches.




The residual ash after melting can be made use of as potash fertilizer. This way, we accomplish the power recycle among straw-- fuel-- fertilizer.


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