Preparation method of snow melting agent

A snow-melting agent and drying technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of high price, poor snow-melting effect, pollution of rivers, groundwater, etc., and achieve the effect of low price and good snow-melting effect

Inactive Publication Date: 2017-04-26
SHAANXI EYOUNG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the excessive use of deicing agents, a large number of green vegetation have died, resulting in serious corrosion and damage to the concrete pavement of roads and bridges.
After the snow mixed with deicing agent melts and seeps into the ground, it will pollute rivers and groundwater and damage the ecological environment.
Recently, people have developed an organic deicing agent based on calcium magnesium acetate (CMA), which has no pollution to the environment, but its deicing effect is not as good as that of sodium chloride, and its price is expensive, which limits its wide-scale promotion and utilization.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A preparation method of deicing agent, comprising the following steps:

[0018] (1) Take the straw ash, dry it through a 50-mesh sieve, and put it in a volumetric flask for later use;

[0019] (2) Add acetic acid waste liquid to the straw ash, wherein the ratio of water to waste liquid is 8-10:1, heat in a water bath, the heating temperature is 80-90°C, and the heating time is 60-90min;

[0020] (3) Mechanical stirring, the stirring time is 30 minutes, and the stirring speed is 600rpm;

[0021] (4) Remove the insoluble matter by filtration to obtain a light yellow solution,

[0022] (5) After clarifying the solution, filter out the supernatant, which is the liquid deicing agent;

[0023] (6) Crystallize the deicing agent through a rotary evaporator to obtain a solid deicing agent, dry and grind it to obtain a light yellow powder;

[0024] (7) Dissolve the yellow powder in distilled water, perform activated carbon adsorption treatment, and dry to obtain a white deicin...

Embodiment 2

[0026] A preparation method of deicing agent, comprising the following steps:

[0027] (1) Take the straw ash, dry it through a 50-mesh sieve, and put it in a volumetric flask for later use;

[0028] (2) Add acetic acid waste liquid to the straw ash, wherein the ratio of water to waste liquid is 8-10:1, heat in a water bath, the heating temperature is 80-90°C, and the heating time is 60-90min;

[0029] (3) Mechanical stirring, the stirring time is 30 minutes, and the stirring speed is 600rpm;

[0030] (4) Remove the insoluble matter by filtration to obtain a light yellow solution,

[0031] (5) After clarifying the solution, filter out the supernatant, which is the liquid deicing agent;

[0032] (6) Crystallize the deicing agent through a rotary evaporator to obtain a solid deicing agent, dry and grind it to obtain a light yellow powder;

[0033] (7) Dissolve the yellow powder in distilled water, perform activated carbon adsorption treatment, and dry to obtain a white deicin...

Embodiment 3

[0036] A preparation method of deicing agent, comprising the following steps:

[0037] (1) Take the straw ash, dry it through a 50-mesh sieve, and put it in a volumetric flask for later use;

[0038] (2) Add acetic acid waste liquid to the straw ash, wherein the ratio of water to waste liquid is 8-10:1, heat in a water bath, the heating temperature is 80-90°C, and the heating time is 60-90min;

[0039] (3) Mechanical stirring, the stirring time is 30 minutes, and the stirring speed is 600rpm;

[0040] (4) Remove the insoluble matter by filtration to obtain a light yellow solution,

[0041] (5) After clarifying the solution, filter out the supernatant, which is the liquid deicing agent;

[0042] (6) Crystallize the deicing agent through a rotary evaporator to obtain a solid deicing agent, dry and grind it to obtain a light yellow powder;

[0043] (7) Dissolve the yellow powder in distilled water, perform activated carbon adsorption treatment, and dry to obtain a white deicin...

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PUM

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Abstract

The invention relates to a preparation method of a snow melting agent. The preparation method comprises the steps of taking straw ash, drying, sieving with a screen with larger-than-50 mesh, placing the sieved material in a volumetric flask for future use, adding waste liquor of acetic acid into the straw ash, wherein the applying ratio of water to waste liquid is 8-10:1, heating in water bath, keeping the heating temperature at 80-90 DEG C, controlling the heating time to be 60-90 minutes. The snow melting agent has the advantages of being cheap in price, environment-friendly and economical, good in snow melting effect, free of pollution and free of corrosive effect.

Description

technical field [0001] The invention relates to a preparation method of a deicing agent. Background technique [0002] Snow melting agent, also known as deicing salt and road antifreeze, is mainly used in winter airports, highways, squares, parking lots, railways, urban streets, etc. to remove snow and prevent freezing. Its ingredients are sodium chloride, calcium chloride, magnesium chloride, etc. Salt-based. Due to the advantages of convenient use and moderate price, deicing agents are not only widely used in large cities, but also gradually tend to be used in large quantities in many small and medium-sized cities. However, due to the excessive use of deicing agents, a large number of green vegetation died, resulting in severe corrosion damage to the concrete pavement of roads and bridges. After the snow mixed with deicing agent melts and seeps into the ground, it will pollute rivers and groundwater and destroy the ecological environment. Recently, people have developed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/18
CPCC09K3/185
Inventor 张俊
Owner SHAANXI EYOUNG TECH
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