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A preparation process of economical and environment-friendly deicing agent

A preparation process, an environmentally friendly technology, applied in other chemical processes, chemical instruments and methods, etc., can solve the problems of high cost and high impurity content, achieve high value, increase energy consumption, and improve color and odor.

Inactive Publication Date: 2018-07-27
山东泰然生物工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of high color, smell, high impurity content and high cost in the process of preparation and use of the existing deicing agent, the present invention proposes an economical and environment-friendly deicing agent preparation process, the principle of which is as follows: The biomass pyrolysis wood vinegar is subjected to preliminary decompression distillation to obtain refined wood vinegar with a lighter color; secondly, a suitable extractant is selected to extract active ingredients such as acetic acid in the wood vinegar; the extracted organic phase and limestone are used to extract Or calcium magnesium hydroxide reacts to form calcium magnesium acetate (CMA), and after filtration and drying, white calcium magnesium acetate powder is obtained; finally, an economical and environmentally friendly snow melting agent with better snow melting effect and environmental friendliness is formulated

Method used

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  • A preparation process of economical and environment-friendly deicing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Take 1 kg of biomass pyrolysis wood vinegar produced by Shandong Tairan Biological Engineering Co., Ltd., in which the acetic acid content is 4%-8%, and the moisture content is 80%-90%; use a rotary evaporator to reduce it Pressure distillation, control the temperature to 90℃, and the vacuum degree to 0.06MPa, to obtain 0.873kg of light yellow refined wood vinegar with acetic acid as the main active ingredient;

[0026] (2) Weigh 850g refined wood vinegar and 250g composite extractant (dichloromethane 50% + triethyl phosphate 20%, cyclohexane 20% and isooctyl alcohol 10%) and mix them in a 1.5L separatory funnel. After shaking for 30 minutes, let it stand for layering, and collect the organic phase from the lower layer to obtain a total of 353g of the extracted organic phase;

[0027] (3) Use Agilent HPLC1260 high performance liquid chromatograph to measure the acetic acid content in the refined wood vinegar before extraction, the aqueous phase after extraction, and the ...

Embodiment 2

[0031] (1) Take 1 kg of biomass pyrolysis wood vinegar produced by Shandong Tairan Biological Engineering Co., Ltd., in which the acetic acid content is 4%-8%, and the moisture content is 80%-90%; use a rotary evaporator to reduce it Pressure distillation, control temperature at 70℃, vacuum degree at 0.09MPa, obtain 0.882kg of light yellow refined wood vinegar with acetic acid as the main active ingredient;

[0032] (2) Weigh 850g refined wood vinegar and 350g composite extractant (dichloromethane 80% + triethyl phosphate 8%, cyclohexane 8% and isooctyl alcohol 4%) and mix them in a 1.5L separatory funnel. Shake well for 30 minutes and then stand still for layering, and collect the organic phase from the lower layer to obtain a total of 412 g of the extracted organic phase;

[0033] (3) Use Agilent HPLC1260 high performance liquid chromatograph to measure the acetic acid content in the refined wood vinegar before extraction, the aqueous phase after extraction, and the organic phase...

Embodiment 3

[0037] (1) Weigh 5g each of the snow melting agent of Example 1, Example 2 snow melting agent, and sodium chloride, and dissolve them in a 25mL volumetric flask to a constant volume, and the resulting solution is 200g / L;

[0038] (2) Set the temperature of the low-temperature test box to -10±1℃, respectively put three 50mL porcelain crucibles into 20mL distilled water and put them in the low-temperature test box to freeze until freezing, and then take three 50mL beakers and put them into 5mL respectively The snow melting agent solution and sodium chloride solution of the same, and also put them in the low temperature test box for 12h, standby;

[0039] (3) Take out the three porcelain crucibles from the low-temperature test box, dry the water and ice on the outer wall, and quickly weigh the result to the nearest 0.1g; then pour the two deicing agent solutions and the sodium chloride solution into the container. Put them in the three porcelain crucibles with ice cubes and put them b...

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Abstract

The invention discloses an economical and environment-friendly snow-melting agent preparation process which comprises the following steps: (1) performing reduced pressure distillation on biomass pyrolysis wood vinegar to obtain refined wood vinegar with acetic acid serving as a main effective component; (2) performing single extraction on the refined wood vinegar by selecting a compound extraction agent to extract part of the acetic acid and other components from the wood vinegar; (3) performing reaction on dolomite or calcium magnesium hydroxide and organic acid (the acetic acid) in an extracting phase, and then filtering and drying to obtain calcium magnesium acetate; and (4) adding a cosolvent into the calcium magnesium acetate for compounding to obtain an economical and environment-friendly snow-melting agent. The color, smell and content of the snow-melting agent obtained by the preparation process are effectively controlled; and furthermore, the energy consumption and cost of preparation are reduced, so that resources are fully used.

Description

Technical field [0001] The invention belongs to the technical field of snow melting agents, and particularly relates to a process for preparing snow melting agents by using biomass pyrolysis wood vinegar as a raw material. technical background [0002] The northern region of my country faces the problem of ice and snow every winter, and road deicing and snow melting is an important topic that has plagued people for a long time. Traditional deicing and snow melting methods use chloride salts (NaCl, CaCl 2 Etc.) Although the snow melting effect of chloride salt is very good, it is very corrosive to roads and bridges, and there is serious pollution to crops and groundwater. Therefore, in the 1980s, the United States developed an economical and environmentally friendly snowmelting agent—CMA, which is calcium-magnesium acetate salt, to replace chloride salts. In addition to its good ability to remove ice and snow, CMA is also biodegradable, non-corrosive to roads and bridges, and non...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/18
CPCC09K3/185
Inventor 张安东陈鑫成王靖何化昌王昊堃
Owner 山东泰然生物工程有限公司