Notes

Application of biomass boiler and also wood pellet gas<br>
Under the stress of environmental protection and also energy crisis, several countries has executed plans to reduce discharge and also promote new power. Under this problem, a growing number of coal-fired central heating boilers have been changed by, or upgraded right into biomass boiler



Standard coal-fired boilers emit a lot of black smoke and sulfur gas. Some of them are not furnished with desulfurizer. They will certainly contaminate the surrounding locations. To replace them with gas and also power requires way too much efforts and price, numerous coal-fired boiler owner usage biomass gas to replace coal. Taking into consideration most coal-fired central heating boilers are unsuited for biomass gas, there are specialized biomass gas burning tools to address this issue. They are created based on the features of biomass gas as well as minimize the pollutant exhaust.



Various sorts of biomass pellet central heating boiler

Biomass boiler takes on biomass energy, normally biomass pellets, as gas. According to different energy media, they can be categorized right into biomass vapor boiler, biomass warm water central heating boiler, biomass warm blast oven, biomass thermal oil heating system.



According to their objective, biomass central heating boilers can be classified right into biomass thermal central heating boiler and also biomass electric power central heating boiler They both create power by shedding biomass gas. Biomass thermal central heating boiler usage thermal energy, while biomass electrical power boiler turn the thermal power right into electric power. Biomass thermal central heating boiler is still the most prominent kind, whose technology is fully grown.




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



Tiny biomass boiler

These boilers makes use of solid or gasified biomass gas They create heat in the form of hot water. Tiny biomass boiler features small quantity, basic structure, affordable price, but it has reduced energy conversion effectiveness and also low energy supply. Small biomass boiler is generally for residence heating in rural areas and also warm water supply.



Large biomass boiler.

These kind of biomass boiler usage strong biomass gas and supply warm water or steam. The innovation is mature, the power supply is high, and also the energy loss is low. However some biomass central heating boiler has fuel cocking owing to not enough burning, and also the support facility is not excellent.



Resources for biomass central heating boiler.

Biomass boiler has broad resource of basic materials. All photosynthetic plants can be used as raw materials, including sawdust, timber chips, rice husk, sunflower seed shell, sorghum stalk, corn stalk, bean stalk, and so on. By high-heat as well as high-pressure handling in the molding devices, these biomass products are formed into columnar biomass gas. They are fed into biomass boilers to generate heat.



2 typical biomass gas.

Normally, biomass molding fuel has 2 types-- biomass briquettes and wood pellet gas. The length of biomass briquettes is more than 15cm, the size is 30-40mm. They are made by biomass briquette press. Wood pellets is 6-8mm in size. They are made by wood pellet mill. Wood pellet fuels progressively take the place of biomass briquettes owing to high thickness, large application as well as hassle-free utilizing. They burns a lot more adequately than biomass briquettes.



Biomass pellet fuel has fiber material of 70%. The sulfur content is much lower than coal High thickness makes it practical to shop and transportation. It can be applied in various devices. small electric fish feed extruder machine burns completely, with much less smoke and ash content, and the combustion rate is 11% more than coal.



Advantages of timber pellet fuel over coal.

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

High hydrogen web content: biomass fuels has even more volatiles, so they are less complicated to burn. wood stove pellet making machine as well as hydrogen are incorporated right into low molecular hydrocarbon, which will separate out volatiles at heat.

High oxygen material: biomass fuel has more oxygen material than coal, so the warmth worth is low.

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

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

Reduced carbon exhaust: biomass gas is carbon-neutral, in other words, zero carbon emission

Waste recycle: the adoption of biomass gas can make full use of wastes, and eliminate their damages to atmosphere. Besides, the residual ash after shedding can be made use of to generate fertilizer.

Combined firing: Biomass gas can be shed together with coal and also enhance the combustion efficiency.



Biomass central heating boiler contamination emission.

Biomass central heating boiler release small quantity of air contaminants, as well as solid waste that can be recycled.



Contaminating gases

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



Strong waste

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



By furnishing the biomass central heating boiler with desulfurizing and also dirt eliminating tool, we can decrease the pollutant emission to minimum.




Ecological benefits of biomass boiler

To replace coal with biomass gas, we can lower the contaminant emission in atmosphere. Meanwhile, the web carbon discharge of biomass gas is zero, which can soothe greenhouse effect.



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



The residual ash after shedding can be utilized as potash plant food. This way, we accomplish the power reuse among straw-- gas-- plant food.


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