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Environmental protection snow melt agent and preparation method thereof

A kind of deicing agent and environment-friendly technology, applied in the field of environment-friendly deicing agent and its preparation, can solve the problems of incomplete eradication of chlorine damage, waste of resources, environmental pollution, etc., achieve outstanding effect, ensure environmental protection, and reduce costs

Active Publication Date: 2005-08-24
滁州市昌春木炭专业合作社 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This deicing agent still has the following deficiencies: (1) does not completely eradicate chlorine damage
(2) The cost is too high
In the past, people discarded wood vinegar as wastewater, which not only caused environmental pollution, but also caused a waste of resources.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: Preparation of magnesium-calcium deicing agent.

[0025] a, get 1000 kilograms of wood vinegar with an acidity value of 84 mg KOH / g, add excessive 5% mol of magnesium oxide and calcium oxide (the mol ratio of magnesium and calcium is 7: 3), wherein, calcium oxide and magnesium oxide are The prepared water powder suspension with a solid content of 6% (Wt) was stirred and mixed, and reacted at room temperature for 20-50 minutes;

[0026] B, filter and remove insoluble matter, obtain black or dark brown filtrate;

[0027] c. Add 100 parts of activated carbon to the filtrate, shake and decolorize at room temperature for 20-50 minutes, and filter to obtain a colorless or light-colored filtrate;

[0028] d. After evaporating and concentrating the filtrate to a solid content of 36% (weight), it is a liquid snow-melting agent product; or evaporating and drying the filtrate to obtain a light yellow solid powder, which is a solid snow-melting agent product.

[002...

Embodiment 2

[0031] Embodiment 2: Preparation of magnesium-calcium deicing agent.

[0032] Get 1000 kilograms of wood vinegar whose acidity value is 120mg KOH / g, adopt magnesium hydroxide and calcium hydroxide as raw material, make filtrate by embodiment 1 step a, b, c, d, filtrate is evaporated and concentrated to solid content of After 35% (weight), it is a liquid snow-melting agent product; or the filtrate is evaporated and dried to obtain a light yellow solid powder, which is a solid snow-melting agent product.

[0033] Each composition in the analysis liquid deicing agent is: water 65%, CaAc 2 9%, MgAc 2 26%.

[0034] Analysis of each composition in the solid deicing agent: CaAc 2 26%, MgAc 2 74%.

Embodiment 3

[0035] Embodiment 3: Preparation of magnesium salt deicing agent.

[0036] Get 1000 kilograms of wood vinegar whose acidity value is 120mg KOH / g, add excessive 5% mole magnesium oxide, wherein, magnesium oxide is the magnesium oxide powder water suspension of pre-made solid content 10%, stir and mix, in React at room temperature for 20-50 minutes, and obtain the filtrate according to steps b and c of Example 1, d, evaporate and concentrate the filtrate to a solid content of 36% (weight), and obtain a liquid deicing agent product; or evaporate and dry the filtrate to obtain a thin Yellow solid powder, solid deicing agent product.

[0037] Each composition in the analysis liquid deicing agent is: water 64%, CaAc 2 0.4%, MgAc 2 35.6%.

[0038] Analysis of each composition in the solid deicing agent: CaAc 2 1.0%, MgAc 2 99.0%.

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PUM

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Abstract

An environment protection type snow melt agent is prepared from the rejected liquid. Its advantages are no corrosion, low cost, and low thawing temp. Said rejected liquid is generated in making gas by carbonizing wood dust.

Description

technical field [0001] The invention relates to an environment-friendly deicing agent with no corrosion and low snow-melting temperature in the field of green chemistry. In particular, it is a low-cost and environment-friendly deicing agent made from wood vinegar. Background technique [0002] At present, the chemical deicing methods at home and abroad mainly use chloride salts (NaCl, CaCl 2 etc.) as a deicing agent. As we all know, chlorine salt deicing agent is effective and cheap, but its main disadvantage is that it pollutes the environment, endangers the greenery on both sides of the road, farmland and rivers, and erodes the road surface and corrodes the steel bars of bridges, affecting the service life of the road. In order to reduce the losses caused by the hazards of chlorine salts, some developed countries have experimented with heat sources to melt ice and snow, but due to energy constraints, they have not been widely used. Some countries also use liquid (NaCl s...

Claims

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Application Information

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IPC IPC(8): C09K3/18
Inventor 许英梅张秋民张树彪董纪平韩双魏艳红周威段丽娟刘磊
Owner 滁州市昌春木炭专业合作社
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