CN103342988B - Environment-friendly snow melting agent and preparation method thereof - Google Patents
Environment-friendly snow melting agent and preparation method thereof Download PDFInfo
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- CN103342988B CN103342988B CN201310278843.3A CN201310278843A CN103342988B CN 103342988 B CN103342988 B CN 103342988B CN 201310278843 A CN201310278843 A CN 201310278843A CN 103342988 B CN103342988 B CN 103342988B
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Abstract
The invention relates to an environment-friendly snow melting agent and a preparation method of the snow melting agent, and belongs to the field of the snow melting agents. The snow melting agent is prepared from acetates and chlorine salts with low corrosivity as the main raw materials by mixing acetates including potassium acetate, magnesium acetate and calcium acetate with calcium chloride and magnesium chloride in a certain proportion, as well as a small quantity of corrosion inhibitor. The common fault that a common inorganic snow melting agent is high in corrosivity is effectively overcome, the cost is reduced, and therefore the snow melting agent is suitable for promotion and application.
Description
Technical field
The present invention relates to a kind of environment-friendly snowmelt agent and preparation method thereof, particularly relate to preparation formula and the preparation technology of this environment-friendly snowmelt agent.
Background technology
Winter, ice and snow brought serious hidden danger to traffic safety all the time, and the traffic accident causing due to ice and snow road has caused huge financial loss and loss of life and personal injury.Snow removing mode is mainly divided into snow removal with machine and two kinds of modes of chemistry snow removing at present.Wherein, snow removal with machine maneuverability, speed are fast, applied widely, but have the deficiencies such as Ex-all rate variance, fragile road surface; The snow-removing method of Chemical deicers can make up the deficiency of snow removal with machine, is a kind of effective deicing or snow melting means, and its use is irreplaceable.The type of the Snow Agent of Snow Agent and amount of application are generally comprehensively determined in conjunction with climatic characteristic, the snowfall of this area according to different areas.Current Snow Agent comprises chloride salt and the large classification of non-villaumite two, chloride salt Snow Agent belongs to inorganic Snow Agent, pitch and cement concrete pavement, bridge, soil, roadside trees, greening and physical environment are caused to destruction to a certain degree, field irrigation water source water quality and municipal Infrastructure are had a strong impact on according to causing, and this impact is paid attention to by society day by day.Non-chloride salt Snow Agent comprises organic Snow Agent such as acetic acid salt and urea, and the principal feature of such Snow Agent is expensive, and it is many that snow melt relies on the natural cause restrictions such as temperature, daylight, snow melt long reaction time.Current generally acknowledged environment-friendly snowmelt agent in the world only limits to acetate series products, this product slate raw material type is less, production technique is simple, the feature of environmental protection meets the Economic development policy of China, but due to the restriction of the economic factorss such as cost, some developed countries also can only apply on a small quantity.China is developing country, the more impossible a large amount of uses in a short time of non-villaumite type Snow Agent.But environment protection comes into one's own day by day, particularly high-grade highway, large-scale bridge floor, particularly Steel Bridge Deck etc. more need environment-friendly snowmelt agent.
Summary of the invention
Goal of the invention:
In order to address the above problem, the present invention proposes a kind of environment-friendly snowmelt agent and preparation method thereof, effectively improve the high common fault of common mineral-type Snow Agent corrodibility, and reduced the cost of the organic Snow Agent of CMA class in the world.
Technical scheme:
The present invention is achieved through the following technical solutions:
An environment-friendly snowmelt agent, is characterized in that: by following raw material, be prepared from by weight: calcium acetate magnesium salt 30-35%, Potassium ethanoate 15-18%, calcium chloride 15-20%, magnesium chloride 20-25%, calcium oxide 5-8%, inhibiter 2.5-3.5%.
Described inhibiter component is as follows by weight: Sodium hexametaphosphate 99 50%, water glass 25%, primary zinc phosphate 10%, thiocarbamide 10% and urea 5%.
A preparation method for environment-friendly snowmelt agent as mentioned above, is characterized in that: step is as follows:
(1) get, according to the above ratio each raw material, with ball mill, grind powdered into powder;
(2), calcium acetate magnesium salt, Potassium ethanoate, calcium chloride, magnesium chloride, lime powder are fully stirred after mixing;
(3), fully merge after adding the inhibiter of 2.5-3.5%, mixture after stirring is transported to prilling tower sprinker, under normal pressure, through being cooled to 20 ℃ of room temperatures, is solidified into granular synthetics, and with travelling belt, be sent to storage package workshop by scraper at the bottom of tower, be packaged into finished product.
Advantage and effect:
Compare with sodium-chlor, this environment-friendly snowmelt agent of the present invention has water-soluble preferably, and ice eutectic point is lower, biodegradable and there is very strong snow melt ability, can make accumulated snow loosening, more easily root out, and the aspects such as toxicity of the pollution at impact, soil and the water source of Dui Yan road plant, corrosion of metal, chemical are very low, meet national environmental standard.
The present invention does not need additionally to increase rare material in raw-material use, and all major ingredient forms by common salt, when having reduced production cost, has also simplified production technique.
The Snow Agent deicing or snow melting performance of producing by formula of the present invention and manufacture craft is good, freezing point is low, little, extremely low to farmland and afforestation vegetation destructiveness to the corrodibility of the materials such as the metal of municipal Infrastructure and concrete, and the simple advantage of production technique, be applicable to industrialization and produce.
accompanying drawing explanation:
Fig. 1 is process flow sheet of the present invention.
embodiment:
Below in conjunction with accompanying drawing, the present invention is added and is described further:
Principle of work of the present invention is as follows:
The principle of Snow Agent deicing or snow melting is mainly to utilize the freezing temperature of the material reduction moisture content of snow melt effect, melts new snow in snowfall, prevents that accumulated snow from freezing.Because the freezing point of snow-melting agent is lower, be directly sprinkled upon on the ice and snow on road surface, can make freezing ice sheet accumulated snow disappear and be frozen into water.Compare with sodium-chlor, this environment-friendly snowmelt agent has water-soluble preferably, and ice eutectic point is lower, biodegradable and there is very strong snow melt ability, can make accumulated snow loosening, more easily root out, and the aspects such as toxicity of the pollution at impact, soil and the water source of Dui Yan road plant, corrosion of metal, chemical are very low, meet national environmental standard.
This product does not need additionally to increase rare material in raw-material use, and all major ingredient forms by common salt, when having reduced production cost, has also simplified production technique.
It is main raw material that environment-friendly snowmelt agent be take acetate and the lower villaumite of corrodibility, mainly comprises tumer, magnesium acetate and calcium acetate, allocates a certain proportion of calcium chloride and magnesium chloride and a small amount of inhibiter into.During production, various starting material are all fully pulverized, formed powder, fully mix in proportion, to also passing through granulation process, granulation shape or sheet.
The Snow Agent deicing or snow melting performance of producing by formula of the present invention and manufacture craft is good, freezing point is low, little, extremely low to farmland and afforestation vegetation destructiveness to the corrodibility of the materials such as the metal of municipal Infrastructure and concrete, and the simple advantage of production technique, be applicable to industrialization and produce.
1. main raw material(s) and specification of quality
Calcium acetate magnesium salt: the mixture of calcium acetate and magnesium acetate, molecular formula is Calcium Magnesium Acetate, CMA);
Potassium ethanoate: be colourless crystallization or white crystalline powder, molecular formula CH
4oN
2.Odorless, taste is salty, cool; Micro-have draw moist, soluble in water.
Calcium chloride: be white powdery, granular, sheet, block, chemical formula is CaCl
2, density 2.15g/cm
3, 782 ℃ of fusing points, 1600 ℃ of boiling points.The dissolving of calcium chloride in water can form the hydrate containing 1,2,4,6 crystal water, CaCl
2h
2o, CaCl
22H
2o, CaCl
24H
2o, CaCl
26H
2o.
Magnesium chloride: be MgCl
26H
2o and MgCl
24H
2the mixture of O is mainly MgCl in crystal magnesium chloride
26H
2o.Product has bulk, sheet, granular and powdery, containing MgCl
2approximately 45 ~ 50%.
Inhibiter: inhibiter main component comprises Sodium hexametaphosphate 99, water glass, primary zinc phosphate, urea.
Sodium hexametaphosphate 99, molecular formula: (NaPO
3)
6.By soda ash or caustic soda soln and phosphoric acid, carry out neutralization reaction, after completing, continue to be heated to 250 ℃, generate sodium-metaphosphate, reheat to 620 ℃ of meltings polymerization cost brilliantly, through quenching film-making (pressing grain), make.
Water glass, molecular formula: Na
2siO
39H
2o.Production is divided into dry method and two kinds of modes of production of wet method, and dry production is in reverberatory furnace, to be heated to 1400 ℃ of left and right after quartz sand and soda ash are mixed by a certain percentage, generates molten water glass; It is raw material that wet production be take quartzy rock dust and caustic soda, in pressure cooker, under 0.6-1.0Mpa steam, reacts, and directly generates water glass liquid state (and liquid soluble glass).
Primary zinc phosphate: molecular formula: Zn (H
2pO
4) 22H
2o.Preparation method: phosphoric acid reacts at 100～120 ℃ with zinc oxide, through concentrated, crystallisation by cooling, solid-liquid separation and making.
Urea: molecular formula is CO (NH
2)
2, synthetic principal reaction equation is 2NH
3(liquid)+CO
2(gas)=NH
4cOONH
2(liquid), NH
4cOONH
2=CO(NH
2)
2(liquid)+H
2o.
2. Snow Agent synthesizing formula
Each major ingredient composition of Snow Agent and proportioning thereof are in Table 1, and wherein the chemical composition of inhibiter and each component ratio are in Table 2.
Table 1 main chemical compositions and each component ratio
| Chemical composition | CMA | CH 4ON 2 | MgCl 2 | CaCl 2 | CaO | Inhibiter |
| Ratio % | 30-35% | 15-18% | 15-20% | 20-25% | 5-8% | 2.5-3.5% |
Table 2 inhibiter chemical composition and each component ratio
| Chemical composition | Sodium hexametaphosphate 99 | Water glass | Primary zinc phosphate | Thiocarbamide | Urea |
| Ratio % | 50% | 25% | 10% | 10% | 5% |
The ratio of inhibiter in Snow Agent is only 2.5-3.5%, but Steel Bridge Deck has been played to the very crucial corrosive nature that delays.Its corrosion inhibition principle be inhibiter can with the ion generation chemical reaction of metal, in metallic surface, generate and to there is compound oxidation rete provide protection, insoluble, metal and medium machinery are separated, prevention corrosion process, plays corrosion inhibition.
3. preparation technology
Preparation technology guarantees the key of quality product, and the general technology process that this environment-friendly snowmelt agent is produced as shown in Figure 1.By various compositions respectively grinding powder fully stir, after adding and stirring after inhibiter, after mixing by pump delivery to prilling tower sprinker, through the cooling curing synthetics that granulates, and with travelling belt, be sent to storage package workshop by scraper at the bottom of tower.
The technical feature of Snow Agent should meet the requirement of table 3.
Table 3 Snow Agent performance requriements
The contrast of table 4 environment-friendly snowmelt agent performance of the present invention and Industrial Salt
Below in conjunction with specific embodiment, the present invention is added and is described further:
It is main raw material that environment-friendly snowmelt agent of the present invention be take acetate and the lower villaumite of corrodibility, mainly comprises tumer, magnesium acetate and calcium acetate, allocates a certain proportion of calcium chloride and magnesium chloride and a small amount of inhibiter into.
Environment-friendly snowmelt agent of the present invention, is prepared from by weight by following raw material: calcium acetate magnesium salt 30-35%, Potassium ethanoate 15-18%, calcium chloride 15-20%, magnesium chloride 20-25%, calcium oxide 5-8%, inhibiter 2.5-3.5%.
Described inhibiter component is as follows by weight: Sodium hexametaphosphate 99 50%, water glass 25%, primary zinc phosphate 10%, thiocarbamide 10% and urea 5%.
A preparation method for environment-friendly snowmelt agent as mentioned above, is characterized in that: step is as follows:
(1) get, according to the above ratio each raw material, with ball mill, grind powdered into powder;
(2), calcium acetate magnesium salt, Potassium ethanoate, calcium chloride, magnesium chloride, lime powder are fully stirred after mixing;
(3), fully merge after adding the sustained release dosage of 2.5-3.5%, mixture after stirring is transported to prilling tower sprinker, under normal pressure, through being cooled to 20 ℃ of room temperatures, is solidified into granular synthetics, and with travelling belt, be sent to storage package workshop by scraper at the bottom of tower, be packaged into finished product.
Embodiment 1
An environment-friendly snowmelt agent, is prepared from by weight by following raw material: calcium acetate magnesium salt 30%, Potassium ethanoate 15%, calcium chloride 20%, magnesium chloride 25%, calcium oxide 6.5%, inhibiter 3.5%.
Described inhibiter component is as follows by weight: Sodium hexametaphosphate 99 50%, water glass 25%, primary zinc phosphate 10%, thiocarbamide 10% and urea 5%.
The preparation method of above-mentioned environment-friendly snowmelt agent, step is as follows:
(1) get, according to the above ratio each raw material, calcium acetate magnesium salt 30%, Potassium ethanoate 15%, calcium chloride 20%, magnesium chloride 25%, calcium oxide 6.5%, inhibiter 3.5%, grind powdered into powder with ball mill;
(2), calcium acetate magnesium salt, Potassium ethanoate, calcium chloride, magnesium chloride, lime powder are fully stirred after mixing;
(3), fully merge after adding 3.5% sustained release dosage, mixture after stirring is transported to prilling tower sprinker, under normal pressure, through being cooled to 20 ℃ of room temperatures, is solidified into granular synthetics, and with travelling belt, be sent to storage package workshop by scraper at the bottom of tower, be packaged into finished product.
Embodiment 2
An environment-friendly snowmelt agent, is prepared from by weight by following raw material: calcium acetate magnesium salt 35%, Potassium ethanoate 15%, calcium chloride 20%, magnesium chloride 20%, calcium oxide 7.5%, inhibiter 2.5%.
Described inhibiter component is as follows by weight: Sodium hexametaphosphate 99 50%, water glass 25%, primary zinc phosphate 10%, thiocarbamide 10% and urea 5%.
The preparation method of above-mentioned environment-friendly snowmelt agent, step is as follows:
(1) get, according to the above ratio each raw material, calcium acetate magnesium salt 35%, Potassium ethanoate 15%, calcium chloride 20%, magnesium chloride 20%, calcium oxide 7.5%, inhibiter 2.5%, grind powdered into powder with ball mill;
(2), calcium acetate magnesium salt, Potassium ethanoate, calcium chloride, magnesium chloride, lime powder are fully stirred after mixing;
(3), fully merge after adding 2.5% sustained release dosage, mixture after stirring is transported to prilling tower sprinker, under normal pressure, through being cooled to 20 ℃ of room temperatures, is solidified into granular synthetics, and with travelling belt, be sent to storage package workshop by scraper at the bottom of tower, be packaged into finished product.
Embodiment 3
An environment-friendly snowmelt agent, is prepared from by weight by following raw material: calcium acetate magnesium salt 32%, Potassium ethanoate 18%, calcium chloride 15%, magnesium chloride 24%, calcium oxide 8%, inhibiter 3%.
Described inhibiter component is as follows by weight: Sodium hexametaphosphate 99 50%, water glass 25%, primary zinc phosphate 10%, thiocarbamide 10% and urea 5%.
The preparation method of above-mentioned environment-friendly snowmelt agent, step is as follows:
(1) get, according to the above ratio each raw material, calcium acetate magnesium salt 32%, Potassium ethanoate 18%, calcium chloride 15%, magnesium chloride 24%, calcium oxide 8%, inhibiter 3%, grind powdered into powder with ball mill;
(2), calcium acetate magnesium salt, Potassium ethanoate, calcium chloride, magnesium chloride, lime powder are fully stirred after mixing;
(3), fully merge after adding 3% sustained release dosage, mixture after stirring is transported to prilling tower sprinker, under normal pressure, through being cooled to 20 ℃ of room temperatures, is solidified into granular synthetics, and with travelling belt, be sent to storage package workshop by scraper at the bottom of tower, be packaged into finished product.
Embodiment 4
An environment-friendly snowmelt agent, is prepared from by weight by following raw material: calcium acetate magnesium salt 35%, Potassium ethanoate 17%, calcium chloride 18%, magnesium chloride 22%, calcium oxide 5%, inhibiter 3%.
Described inhibiter component is as follows by weight: Sodium hexametaphosphate 99 50%, water glass 25%, primary zinc phosphate 10%, thiocarbamide 10% and urea 5%.
The preparation method of above-mentioned environment-friendly snowmelt agent, step is as follows:
(1) get, according to the above ratio each raw material, calcium acetate magnesium salt 35%, Potassium ethanoate 17%, calcium chloride 18%, magnesium chloride 22%, calcium oxide 5%, inhibiter 3%, grind powdered into powder with ball mill;
(2), calcium acetate magnesium salt, Potassium ethanoate, calcium chloride, magnesium chloride, lime powder are fully stirred after mixing;
(3), fully merge after adding 3% sustained release dosage, mixture after stirring is transported to prilling tower sprinker, under normal pressure, through being cooled to 20 ℃ of room temperatures, is solidified into granular synthetics, and with travelling belt, be sent to storage package workshop by scraper at the bottom of tower, be packaged into finished product.
Conclusion:
Snow Agent of the present invention, can be used for Steel Bridge Deck and corrodibility is required to high place, have that deicing or snow melting efficiency is high, ice eutectic point is low, corrodibility is low, biodegradable, substantially pollution-free to bridge floor, soil, roadside trees, greening and physical environment, to the low feature of field irrigation water source water quality impact.Meanwhile, production technique is simple, is convenient to the features such as scale operation, storage and spreading, for Steel Bridge Deck, makes its weather resistance obtain very big improvement.
The present invention has improved the high common fault of common mineral-type Snow Agent corrodibility, and has reduced the cost of the organic Snow Agent of CMA class in the world, has broad application prospects.
Claims (2)
1. an environment-friendly snowmelt agent, is characterized in that: by following raw material, be prepared from by weight: calcium acetate magnesium salt 30-35%, Potassium ethanoate 15-18%, calcium chloride 15-20%, magnesium chloride 20-25%, calcium oxide 5-8%, inhibiter 2.5-3.5%; Described inhibiter component is as follows by weight: Sodium hexametaphosphate 99 50%, water glass 25%, primary zinc phosphate 10%, thiocarbamide 10% and urea 5%.
2. a preparation method for environment-friendly snowmelt agent as claimed in claim 1, is characterized in that: step is as follows:
(1) get, according to the above ratio each raw material, with ball mill, grind powdered into powder;
(2), calcium acetate magnesium salt, Potassium ethanoate, calcium chloride, magnesium chloride, lime powder are fully stirred after mixing;
(3), fully merge after adding the inhibiter of 2.5-3.5%, mixture after stirring is transported to prilling tower sprinker, under normal pressure, through being cooled to 20 ℃ of room temperatures, is solidified into granular synthetics, and with travelling belt, be sent to storage package workshop by scraper at the bottom of tower, be packaged into finished product.
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| CN104829157B (en) * | 2015-04-10 | 2016-08-17 | 常州履信新材料科技有限公司 | A kind of freeze proof material of the temperature sensitive type for bituminous paving and preparation method thereof |
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| CN108084966A (en) * | 2017-12-29 | 2018-05-29 | 刘志浩 | A kind of environment-friendly snowmelt agent |
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| CN108395878B (en) * | 2018-02-13 | 2020-07-31 | 沈阳工业大学 | Efficient green snow-melting agent special for airport |
| CN108300415B (en) * | 2018-02-13 | 2020-07-03 | 沈阳工业大学 | High-efficiency multifunctional environment-friendly formate snow-melting agent |
| CN108380396A (en) * | 2018-03-02 | 2018-08-10 | 电子科技大学中山学院 | Composite beneficiation reagent based on chemical production |
| CN110551484B (en) * | 2018-06-04 | 2021-05-14 | 江苏省制盐工业研究所有限公司 | Efficient mixed environment-friendly snow-melting agent |
| CN110003671B (en) * | 2019-04-03 | 2020-12-22 | 湖北工业大学 | Snow-melting and anti-rut agent and pavement comprehensive ice-melting system |
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