Active carbon preparing method by adopting walnut shell as raw material and application of the active carbon
A technology for preparing activated carbon and walnut shells, which is applied in applications, chemical instruments and methods, and fertilizer mixtures. It can solve the problems of high soil debris and harmful substances, affecting the survival and reproduction of bacteria, and short storage time of bacterial fertilizers. , to achieve the effect of eliminating environmental pollution, low production cost, and low equipment investment
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Embodiment 1
[0031] a) Pulverization: take 500Kg of walnut shells, wash and air-dry them, pulverize them with a pulverizer, and sieve them into irregular particles with a particle size of 1-2mm;
[0032] b) Drying: Send the walnut shell particles in step a) into the reaction furnace, turn on the vacuum equipment, control the vacuum degree in the reaction furnace at a negative pressure of 600mmHg, keep stirring the material and raise the temperature to 120°C and then dry for 1 hour. Among them, The initial heating rate is controlled at 0.5°C / min. When the temperature rises to 60°C, the heating rate is adjusted to 1°C / min. Gases such as CO, CH 4 , tar, use the vacuum pipe to lead to the burner for auxiliary heating of the reactor;
[0033] c) Carbonization: When the water content of walnut shell particles is ≤5% by sampling test, under the condition of vacuum degree of 600mmHg negative pressure, continue to heat up to 400°C and then carbonize for 4 hours, in which the heating rate is control...
Embodiment 2
[0040] a) Pulverization: take 500Kg of walnut shells, wash and air-dry them, pulverize them with a pulverizer, and sieve them into irregular particles with a particle size of 1-2mm;
[0041] b) Drying: Put the walnut shell particles in step a) into the reaction furnace, turn on the vacuum equipment, control the vacuum degree in the reaction furnace at 600mmHg negative pressure, keep stirring the material and raise the temperature to 120°C and then dry for 1.5 hours, wherein, The initial heating rate is controlled at 0.5°C / min. When the temperature rises to 60°C, the heating rate is adjusted to 1°C / min. Gases such as CO, CH 4 , The tar is led to the burner by the vacuum pipe to assist the heating of the reactor;
[0042] c) Carbonization: When the water content of walnut shell particles is ≤5% by sampling test, under the condition of vacuum degree of 600mmHg negative pressure, continue to heat up to 425°C and then carbonize for 5 hours, in which the heating rate is controlled a...
Embodiment 3
[0049] a) Pulverization: take 500Kg of walnut shells, wash and air-dry them, pulverize them with a pulverizer, and sieve them into irregular particles with a particle size of 1-2mm;
[0050] b) Drying: Send the walnut shell particles in step a) into the reaction furnace, turn on the vacuum equipment, control the vacuum degree in the reaction furnace at 600mmHg vacuum negative pressure, stir the material and heat it up to 120°C and dry it for 2 hours. Among them, The initial heating rate is controlled at 0.5°C / min. When the temperature rises to 60°C, the heating rate is adjusted to 1°C / min. Gases such as CO, CH 4 , The tar is led to the burner by the vacuum pipe to assist the heating of the reactor;
[0051] c) Carbonization: When the water content of walnut shell particles is ≤5% by sampling and testing, under the condition of vacuum degree of 600mmHg and negative pressure, continue to heat up to 450°C and then carbonize for 4 hours. The heating rate is controlled at 1°C / min. ...
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