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

Inactive Publication Date: 2017-05-10
汪逸凡
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main technical problem to be solved by the present invention is to solve the problem of high chloride ion content in the existing deicing agent, which will cause corrosion to the road surface after use, and the solubility is relatively large and the dissolution rate is too fast, resulting in a short action time of the deicing agent and increasing the amount of use. At the same time, it will also cause soil and groundwater pollution. A method for preparing an environmentally friendly deicing agent by using calcium nitrate and modified traditional Chinese medicine dregs is provided. The invention first pulverizes the traditional Chinese medicine dregs and then carbonizes and pickles the modified traditional Chinese medicine. slag, then take wheat for liquefaction and saccharification to obtain a saccharification solution, and prepare a fermentation medium from the saccharification solution, inoculate yeast and acetic acid bacteria for fermentation and culture, and add egg shells for a heating reaction after the fermentation solution is sterilized to produce rich The fermentation liquid containing calcium nitrate is finally mixed and adsorbed with traditional Chinese medicine dregs to obtain a chlorine-free composite environmental protection snow-melting agent. The present invention utilizes the modified traditional Chinese medicine dregs to absorb the fermented liquid rich in calcium nitrate, so that the snow-melting action time is long, At the same time, it has the advantages of low freezing point and high snow melting rate, and it has almost no corrosion on metal, concrete and asphalt pavement, no harm to plants, and has broad application prospects.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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PUM

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Abstract

The invention discloses a preparation method of a chloride-free, composite and environment-friendly snow-melting agent and belongs to the technical field of snow-melting agent preparation. According to the method, traditional Chinese medicine decoction dregs are smashed, carbonized and acid-dipped to obtain modified traditional Chinese medicine decoction dregs, then wheat is liquified and saccharified to obtain saccharifed liquid, the saccharifed liquid is prepared into a fermenting culture medium, saccharomycetes and acetic acid bacteria are inoculated to perform fermenting culture, the fermenting liquid is sterilized and then is added into egg shells to perform heating reaction, the fermenting liquid rich in calcium nitrate can be generated and finally is mixed with the traditional Chinese medicine decoction dregs, and adsorption is performed to obtain the chloride-free, composite and environment-friendly snow-melting agent. The method utilizes the modified traditional Chinese medicine decoction dregs to absorb the fermenting liquid rich in calcium nitrate, makes the snow-melting acting time long, meanwhile has the advantages of being low in freezing point and high in snow-melting rate, and the agent almost does not corrode metals, concrete and bituminous pavement, is non-harmful to plants and has wide application prospect.

Description

technical field [0001] The invention discloses a preparation method of a chlorine-free composite environment-friendly deicing agent, which belongs to the technical field of deicing agent preparation. Background technique [0002] Snowfall and icing in winter often bring inconvenience to cities and transportation, and easily cause traffic accidents, especially on expressways, which are likely to be forced to close due to snow or icing, resulting in huge economic loss. At present, there are three main methods of deicing and snow melting: manual snow removal, mechanical snow removal, and snow melting agent snow removal. Among them, snow melting agent is widely used because of its simple method, easy operation, and fast snow melting speed. [0003] The use of deicing agents has greatly reduced the inconvenience caused by snowfall in winter to people's production and life. However, due to the irreversible harm caused by traditional deicing agents to the environment, many researc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/18
CPCC09K3/18
Inventor 汪逸凡徐越薛蕾
Owner 汪逸凡
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