Preparation method of chloride-free, composite and environment-friendly snow-melting agent
A snow-melting agent and environmental protection technology, which is applied in the field of preparation of chlorine-free composite environmental-friendly snow-melting agent, can solve the problems of increased usage, long snow-melting action time, and high snow-melting rate, and achieves the advantages of inhibiting crystal growth, high snow-melting efficiency, and fast snow-melting speed. Effect
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example 1
[0018] First, weigh 500g of traditional Chinese medicine dregs, put them in an oven, dry at 70°C for 8 hours, crush them after drying, and pass through a 280-mesh sieve to obtain the powder of traditional Chinese medicine dregs, put the powder of traditional Chinese medicine dregs into a muffle furnace, and pass in nitrogen At the same time, the temperature was raised to 500°C at a rate of 10°C / min, and the carbonization was carried out for 30 minutes. After cooling to room temperature, the carbonized traditional Chinese medicine dregs were soaked in 8% nitric acid at a mass ratio of 1:8. After soaking for 2 days, suction filtration was obtained. Modified traditional Chinese medicine dregs, set aside; then weigh 300g of wheat, remove the shells and pulverize, pass through a 100-mesh sieve to obtain wheat powder, mix the wheat powder with water at a mass ratio of 1:2, heat to 70°C after mixing, and stir After 15 minutes, add 3g of enzyme activity 80U / g high-temperature-resistant...
example 2
[0021] First, weigh 600g of traditional Chinese medicine dregs, put them in an oven, dry at 75°C for 9 hours, crush them after drying, and pass through a 290-mesh sieve to obtain the powder of traditional Chinese medicine dregs, put the powder of traditional Chinese medicine dregs into a muffle furnace, and pass in nitrogen At the same time, the temperature was raised to 550 °C at a rate of 13 °C / min, and the carbonization was carried out for 35 min. After cooling to room temperature, the carbonized Chinese medicine dregs were soaked in 8% nitric acid at a mass ratio of 1:8. After soaking for 3 days, suction filtration was obtained. Modified traditional Chinese medicine dregs, set aside; then weigh 400g of wheat, remove the shells and pulverize, pass through a 110-mesh sieve to obtain wheat powder, mix the wheat powder with water at a mass ratio of 1:2, heat to 75°C after mixing, and stir After 20 minutes, add 4g of enzyme activity 80U / g high temperature-resistant α-amylase, rais...
example 3
[0024] First, weigh 700g of traditional Chinese medicine dregs, put them in an oven, dry at 80°C for 10 hours, and crush them after drying, pass through a 300-mesh sieve to obtain the powder of traditional Chinese medicine dregs, put the powder of traditional Chinese medicine dregs into a muffle furnace, and pass in nitrogen At the same time, the temperature was raised to 600°C at a rate of 15°C / min, and the carbonization was carried out for 40 minutes. After cooling to room temperature, the carbonized Chinese medicine dregs were soaked in 8% nitric acid at a mass ratio of 1:8. After soaking for 4 days, suction filtration was obtained. Modified traditional Chinese medicine dregs, set aside; then weigh 500g of wheat, remove the shells and pulverize, pass through a 120-mesh sieve to obtain wheat powder, mix the wheat powder with water at a mass ratio of 1:2, heat to 80°C after mixing, and stir After 25 minutes, add 5 g of enzyme activity 80 U / g high temperature-resistant α-amylas...
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