Biomass granular fuel and preparation method thereof
A technology of biomass particles and biomass raw materials, applied in the direction of biofuels, waste fuels, fuels, etc., can solve the problems of easy slagging and insufficient combustion, prolong the burning time, fully burn, and improve ash accumulation and slagging problem effect
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[0015] This embodiment also provides a method for preparing biomass pellet fuel, which includes the following steps:
[0016] (1) The pine sawdust, straw, and plant shells are cleaned to remove impurities and then crushed to obtain biomass raw materials with a particle size of ≤15mm, and the biomass raw materials are dried to make the moisture content less than 8%;
[0017] (2) Crush chitosan, calcium oxide and urea to a particle size of 0.5mm, then add them to the dried biomass raw material, stir and mix evenly; the particle size of chitosan, calcium oxide and urea is less than 0.5mm , Additives are easier to be evenly mixed with biomass raw materials, and the effect is better under the condition of ensuring less dosage;
[0018] (3) The mixed biomass raw materials and additives are extruded and pelletized under the conditions of a temperature of 80-100°C and a pressure of 50-150Mpa, and the biomass pellet fuel is obtained after cooling.
[0019] The chemical components of biomass ra...
Embodiment 1
[0023] This embodiment provides a biomass pellet fuel prepared by mixing 100 kg of pine wood chips and 0.5 kg of additives. The additives are a mixture of chitosan, calcium oxide and urea, and the weight of the additives is 0.5 of the weight of the biomass raw material. %.
[0024] This embodiment also provides a method for preparing the above biomass pellet fuel:
[0025] (1) The pine sawdust is cleaned to remove impurities and then crushed to obtain a biomass raw material with a particle size of ≤15mm, and the pine sawdust is dried to make its moisture content less than 8%;
[0026] (2) Weigh 0.09 kg of chitosan, 0.33 kg of calcium oxide and 0.08 kg of urea, mix them and pulverize them to a particle size of 0.5 mm or less, then add them to the dried pine wood chips in step (1), and stir and mix them evenly;
[0027] (3) The mixed pine wood chips, chitosan, calcium oxide and urea are extruded and pelletized under the conditions of a temperature of 80° C. and a pressure of 100 Mpa, an...
Embodiment 2
[0029] This embodiment provides a biomass pellet fuel prepared by mixing 100 kilograms of pine sawdust and rice straw and 1.5 kilograms of additives. The additives are a mixture of chitosan, calcium oxide and urea. The weight of the additives is for living 1.5% of the weight of the raw material.
[0030] This embodiment also provides a method for preparing the above biomass pellet fuel:
[0031] (1) The pine sawdust and rice straw are cleaned to remove impurities and then crushed to obtain biomass raw materials with a particle size of ≤15mm. The pine sawdust and rice straw are dried to make the moisture content less than 8%;
[0032] (2) Weigh 0.45 kg of chitosan, 0.825 kg of calcium oxide and 0.225 kg of urea, mix them and crush them to a particle size of 0.5 mm, then add them to the dried pine wood chips and rice straws in step (1), and stir. well mixed;
[0033] (3) The mixed pine wood chips, rice straw, chitosan, calcium oxide and urea are extruded and pelletized at a temperature...
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