How to judge whether the produced biomass pellets are qualified?
4 ways to judge pellets quality
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Touch. This means use your hand to touch pellets and identify the quality of the pellets. With hand touches pellets, smooth surface, no cracks, no crashing material and high hardness. All these stand for good quality. Pellets without smooth surfaces, with obvious cracks and a lot of crushed material are not in good quality.
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Observe. It refers to the observation of the color, luster and purity of the pellets, the ash after burning and the various kinds of raw materials. The wood and straw pellets are mostly light yellow and brown. Of course, the wood is different, and the pellets are different. The purity refers to the condition of granulating, the better the granulating condition, the longer the length, the less crushed material, is the upper class pellet.
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Smell. It is the smell of pellets. Because most of the pellets can not be added any additives in the production process, most of the pellets retain their smell of raw materials. Wood pellets have a fragrant smell of wood, and all kinds of straw pellets have their own peculiar smell of straw.
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Test. We provide free test for customers, welcome to send us your raw material for free test. we will send your the detection result with pictures and videos.
The advantages and characteristics of wood pellet fuel
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Compared with common wood burning, wood pellet fuel has the characteristics of uniform density and uniform nature, which is convenient for transportation and loading and unloading.
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The heat value is improved and the combustion performance is better. Wood pellet fuel has high calorific value and calorific value between 4000 kcal and 5500 kcal, equivalent to ordinary raw coal (calorific value of raw coal is 5000 kcal, calorific value of standard coal is 7000 kcal), and its combustion efficiency in biomass combustion furnace can reach over 50%.
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Compared with the traditional fossil fuel, it is a clean renewable energy. It is easy to use and burn completely, with high volatile content (above 70%), low ash (generally less than 5%), no sulfur dioxide, no smoke and other harmful gases, and combustion process achieves zero emissions.
Comparison between burning coal and pellet
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Clean and environmental friendly, wood pellet have the benefit of environmental protection.
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The use of coal or kerosene requires the purchase of expensive desulphurization and denitration devices, as well as the high cost of desulfurization and denitration at the time of combustion. Sawdust pellet fuel has low sulfur, nitrogen and ash content, which is consistent with the clean fuel index. Without any desulfurization and denitration, combustion of sawdust pellets can meet the environmental requirements of the state to the boiler. It can replace the coal and gas, and the combustion efficiency is higher. Coal is much more corrosive to the atmosphere and to the boiler than the wood chip pellet fuel, so the wood chip pellet fuel has the reputation of clean fuel internationally.
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Save space, wood chip pellet raw material (straw, wood chip, rice husk, etc.) is compressed by wood pellet machine, saving a lot of storage space for transportation.
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To realize recycling of wood. pellet ash can be used as plant ash after burning, which is a kind of agricultural potash fertilizer and it can promote plant growth. The biomass energy supply into a new cycle, a steady stream of sustainable utilization.
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Wood pellet fuel is more flammable than coal, very easy to ignite, shortening the firing time.