KR101632412B1 - Eco-friendly snow composition for deicer - Google Patents
Eco-friendly snow composition for deicer Download PDFInfo
- Publication number
- KR101632412B1 KR101632412B1 KR1020150166203A KR20150166203A KR101632412B1 KR 101632412 B1 KR101632412 B1 KR 101632412B1 KR 1020150166203 A KR1020150166203 A KR 1020150166203A KR 20150166203 A KR20150166203 A KR 20150166203A KR 101632412 B1 KR101632412 B1 KR 101632412B1
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- Prior art keywords
- chloride
- sodium
- snow
- calcium chloride
- composition
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/18—Materials not provided for elsewhere for application to surfaces to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces
- C09K3/185—Thawing materials
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/20—Silicates
- C01B33/32—Alkali metal silicates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B9/00—General methods of preparing halides
- C01B9/02—Chlorides
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C59/00—Compounds having carboxyl groups bound to acyclic carbon atoms and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
- C07C59/235—Saturated compounds containing more than one carboxyl group
- C07C59/245—Saturated compounds containing more than one carboxyl group containing hydroxy or O-metal groups
- C07C59/265—Citric acid
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
Abstract
The present invention relates to an eco-friendly antiseptic composition, and more particularly, to a composition comprising a chloride, sodium citrate and sodium metasilicate, wherein the chloride is at least one of calcium chloride, sodium chloride and magnesium chloride.
According to the present invention, there is an advantage that the service life of a road, a bridge, a facility structure, and the like can be extended not only in automobiles, reinforcing bars, and steel frame structures due to the lack of corrosion. In addition, water pollution and acidification of the soil are minimized, and the cost is not high as compared with conventional snow removers made of only calcium chloride and sodium chloride, which makes it possible to commercialize them.
Description
The present invention relates to an environmentally friendly snow remover composition, and more particularly, to an environmentally friendly snow remover composition that prevents corrosion to metal or concrete structures and reduces ecotoxicity.
In recent years, heavy snowfall has occurred all over the world not only in Korea but also in winter.
At present, snow removal agents used in Korea are low-priced calcium chloride (CaCl 2 ) or sodium chloride (NaCl). The calcium chloride is a substance having excellent deliquescence, and absorbs the surrounding moisture to cause a snow removing action. In addition, since calcium chloride causes an exothermic reaction when dissolved in water, a fast and effective snow removal operation is possible. And sodium chloride does not cause an exothermic reaction, but it absorbs moisture such as calcium chloride and dissolves to cause freezing point. Because of this phenomenon, sodium chloride and calcium chloride are not only effective snow removal, but also cheap and effective snow removing agents that prevent re-icing.
However, since calcium chloride and sodium chloride have a large amount of chlorine ion (Cl - ), when they react with iron (Fe), they rapidly form iron chloride (FeCl 2 ) and seriously corrode structures such as automobiles, reinforcing bars and steel frames.
In particular, calcium chloride reduces the lifespan of automobiles, bridges as well as all road facilities by corrosion of not only iron but also concrete and asphalt. In addition, calcium chloride dissolves in water and enters streams and soils, causing water pollution and soil acidification. In addition to causing damage to plants, such as vegetation and vegetation on the roads, it causes skin diseases and itching on the feet and skin of animals. .
In order to solve the above problem of calcium chloride, although magnesium chloride (MgCl 2 ) which is less toxic than calcium chloride is used together with calcium chloride, the use of magnesium chloride is also problematic due to the corrosiveness due to chloride ion.
In order to solve the above problems, various chloride-based snow removers have been developed. Korean Patent No. 10-1361136 discloses a method of treating a waste solution containing acetic acid and formic acid by adding a magnesium compound comprising brucite and limestone, And 10 to 40% by weight of calcium chloride, 10 to 40% by weight of calcium chloride, 10 to 40% by weight of calcium chloride, and 10 to 40% by weight of calcium chloride. 40 to 40 wt%, gluconic acid salt 1 to 10 wt%, nitrite 1 to 10 wt%, and water 5 to 30 wt%. However, in the above-mentioned prior art, the snow remover has a drawback in that it consumes a large amount of energy in the process of dissolving each raw material in water to make it into a liquid solution, drying the solution to solid state, and transporting it as a liquid phase.
Korean Patent No. 10-0179334 discloses a method for producing a non-saline-based snow remover using clamshell powder and acetic acid, but it has a disadvantage in that it is difficult to commercialize a non-saline-based snow remover due to its complicated manufacturing process.
Therefore, there is a demand for development of a snow remover having solving the problems of conventional chloride-based snow removers and economically enough to be practically used.
Accordingly, an object of the present invention is to solve the problems of the conventional chloride-based snow removers described above. By including sodium chloride and sodium citrate and sodium metasilicate as corrosion inhibitors, a thin oxide film is formed on the surface of metal, Thereby preventing corrosion due to ions.
Further, the content of chlorine ions is lowered to reduce ecotoxicity.
In order to accomplish the above object, the present invention provides an environmentally-friendly antistatic agent composition comprising a chloride, sodium citrate and sodium metasilicate, wherein the chloride is at least one of calcium chloride, sodium chloride and magnesium chloride.
100 parts by weight of the chloride, 3 to 10 parts by weight of sodium citrate, and 1 to 5 parts by weight of sodium metasilicate.
The chloride is a mixture of calcium chloride and sodium chloride, and the snow remover composition is solid.
The calcium chloride and sodium chloride are mixed in a weight ratio of 1: 0.5 to 1: 1.
The chloride is magnesium chloride, and the snow remover composition further comprises 80 to 120 parts by weight of water, and is characterized by being in a liquid phase.
According to the present invention, there is an advantage that the service life of a road, a bridge, a facility structure, and the like can be extended not only in automobiles, reinforcing bars, and steel frame structures due to the lack of corrosion.
In addition, water pollution and acidification of the soil are minimized, and the cost is not high as compared with conventional snow removers made of only calcium chloride and sodium chloride, which makes it possible to commercialize them.
Hereinafter, the present invention will be described in detail.
Conventionally, chlorides such as calcium chloride and sodium chloride have been widely used as a snow remover, but such calcium chloride and sodium chloride have disadvantages such as corrosion of cars, reinforcing bars, and concrete structures. In addition, calcium chloride has caused environmental problems such as water pollution and soil acidification.
DISCLOSURE OF THE INVENTION The present invention is intended to overcome the problems of conventional snow remediation compositions composed of calcium chloride and sodium chloride, most notably using sodium metasilicate together with sodium citrate as a corrosion inhibitor.
That is, the snow-deteriorant composition of the present invention forms an oxide film on a metal by the action of a corrosion inhibitor, thereby preventing corrosion by chlorine ions and also minimizing the environmental toxicity by reducing the amount of calcium chloride used. In addition, the corrosion inhibitor is easily dissolved in water and is easily decomposed in the soil easily, so that environmental pollution is also prevented.
The snow remover composition of the present invention includes chlorides, sodium citrate and sodium metasilicate, and the chlorides are characterized by at least one of calcium chloride, sodium chloride, and magnesium chloride.
First, the chloride acts as a rusting agent, and at least one of calcium chloride, sodium chloride, and magnesium chloride can be used. Of these, calcium chloride is a white crystal having very high deliquescence as described above. When mixed with water, it lowers the freezing point of water and generates heat when it reacts with water, thereby lowering the freezing point of the snow remover composition. The sodium chloride also has a very good decomposability and, when mixed with water, lowers the freezing point of water, thereby lowering the freezing point of the snow remover composition. The magnesium chloride is also highly hygroscopic and well soluble in water, which lowers the freezing point of the snow remover composition. In the present invention, magnesium chloride (MgCl 2 .6H 2 O) is preferably used as the magnesium chloride.
These chlorides are excellent as a snow remover, but as mentioned above, chlorine ions (Cl - ) are generated upon contact with water, and water is also separated into hydrogen (H + ) and hydroxyl groups (OH - ), Corrosion will occur during contact.
An example of such a chemical reaction is as follows.
(General corrosion progress)
Fe -> Fe 2+ + 2e -
NaCl + H 2 O-> Na + + Cl - + H + + OH -
Fe 2+ + 2OH - - > Fe (OH) 2
Fe (OH) 2 + O 2 > Fe 2 O 3 + 3H 2 O
(Corrosion progression due to the formation of iron chloride)
Fe -> Fe 2+ + 2e -
NaCl + H 2 O-> Na + + Cl - + H + + OH -
Fe 2+ + 2Cl - - > FeCl 2
FeCl 2 + H 2 O-> FeO + HCl + H 2
FeCl 3 + 3H 2 O-> Fe (OH) 3 + 3HCl
2Fe (OH) 3 -> Fe 2 O 3 + 3H 2 O
Therefore, the present invention uses sodium citrate and sodium metasilicate as corrosion inhibitors together with the chloride.
The sodium citrate (Na 3 C 6 H 5 O 7 .2H 2 O) forms an oxide film on the surface of the structure to prevent corrosion due to chlorine ions. More specifically, sodium citrate, dissolved by snow or ice, is separated into citrate ion (-) and sodium ion (+). Citrate ion (-) oxidizes the surface of structures such as metals to form an oxide film. Therefore, this oxide film suppresses corrosion by blocking direct contact with chlorine ions, which is one of the components of the snow remover. In addition, such sodium citrate can be easily decomposed in the soil, thereby minimizing environmental pollution.
The sodium citrate preferably contains 3 to 10 parts by weight based on 100 parts by weight of the chloride described above. When the content of sodium citrate is less than 3 parts by weight, corrosion resistance is poor and corrosion resistance is poor. When the content of sodium citrate exceeds 10 parts by weight This is not economical.
In addition, sodium metasilicate (Na 2 SiO 3 ) is a white crystal that dissolves well in water. Silicate ions (-) dissolved in water, like sodium citrate, form an oxide film on the surface of metal together with citric acid. In addition, the organic ions of the chlorine ion are interfered with the binding of the chlorine ions to the metal. The sodium metasilicate also serves as a pH adjusting agent, which serves to neutralize the pH of the snow removing agent. The sodium metasilicate can also be easily decomposed in the soil to minimize environmental pollution. And sodium metasilicate not only improves the storability of the snow remover composition, but also prevents re-icing.
The sodium metasilicate preferably contains 1 to 5 parts by weight based on 100 parts by weight of the chloride. When the content of sodium metasilicate is less than 1 part by weight, its function is insignificant. Even if it exceeds 5 parts by weight, It is not economical because it does not rise.
In the present invention, sodium citrate and sodium metasilicate are used together to prevent the corrosion, so that an oxide film is formed on the structure and metal surface by using sodium citrate and sodium metasilicate, and organic ions of chlorine ions are oxidized, And is superior in corrosion resistance to any conventional snow removing agent.
On the other hand, the snow remover composition of the present invention composed of the above-described components can be produced in solid or liquid form. Therefore, the form of the image can be determined and used if necessary.
First, it is preferable to mix calcium chloride and sodium chloride in the chloride when applying it as a solid-phase snow remover. The reason for mixing calcium chloride with sodium chloride in the present invention is that sodium chloride is more effective than sodium chloride at a temperature of -10 to 0 캜 and calcium chloride is more effective than sodium chloride at a temperature of -10 캜 or lower, This is because when sodium chloride and calcium chloride are mixed, the effect of snow removal can be maximized and the versatility can be enhanced. It is preferable that the sodium chloride and calcium chloride are mixed at a ratio of 1: 0.5 ~ 1 weight ratio. If the amount of calcium chloride is too small, the effect of snow removal is not maximized. If the amount of calcium chloride is increased, environmental toxicity becomes worse. In addition, since sodium chloride is in a granular state for a certain period of time after dissolution due to a slow dissolution rate, sodium chloride can be expected to provide a slip-resistant effect, so that sodium chloride is used for a solid-phase snow remover.
When applied as a liquid snow remover, use magnesium chloride, which has a very high solubility in water. That is, in the case of the liquid snow fungicide composition, there is a need for a substance having excellent solubility in sodium citrate and sodium metasilicate which are excellent in the effect of melting snow as a snow remover while being present in a liquid phase and being corrosion inhibitors.
The liquid snow removing agent further includes water as a solvent. It is preferable that 80 to 120 parts by weight of water are contained per 100 parts by weight of the chloride, so that sodium citrate and sodium metasilicate are sufficiently melted, It is possible to prevent the concentration of the contained rusting agent from decreasing and the snow removing effect from being deteriorated.
Hereinafter, the production method thereof will be briefly described.
I will first explain the solid snow removing agent.
Add calcium chloride to the ribbon mixer and mix for 5 to 15 minutes. The calcium chloride introduced into the ribbon blender is broken down by the blade and made into an even particle size. Next, sodium chloride is added thereto, followed by further mixing for 5 to 15 minutes. Finally, sodium citrate and sodium metasilicate are added and further mixed for 5 to 15 minutes. When mixing is completed, the mixture is transferred to a separator to be classified into a uniform particle size to complete the preparation.
Next, the liquid removers will be described. First, water as a solvent is introduced into a stirrer. Sodium metasilicate is added thereto and dissolved by stirring for 5 to 15 minutes. Then, sodium citrate is added and stirred for 5 to 15 minutes And finally magnesium chloride is added thereto, followed by further stirring for 5 to 15 minutes to dissolve, thereby producing a liquid snow removing agent.
The eco-friendly snow remover composition of the present invention has excellent snow melting and ice-melting effects by containing the respective components in an optimal composition ratio, and can prevent the snow and ice from being re-iced due to cold weather. In addition, corrosion of metal or concrete can be prevented and durability can be enhanced. Using sodium citrate and sodium silicate minimizes water pollution and soil acidification.
Hereinafter, the present invention will be described in detail with reference to specific examples.
(Example)
Examples and comparative examples were prepared at the composition ratios shown in Table 1 below.
(Test Example 1)
The degree of environmental compatibility was examined by performing a harmful element content test on the snow remover composition prepared in Examples 1 to 6 above. As the test method, the harmful element test was carried out using the ICP analysis test method. As a result, the harmful elements were not detected in the compositions of Examples 1 to 6 above the reference value in all items.
(Test Example 2)
The liquid snow remover compositions prepared were tested by the following methods in order to find out that snow and ice were melted at low temperatures as well as continuous melting ability. 100 g of ice powder was prepared in 6 2L beakers, 100 g of the snow remover composition prepared in this way was added, and the beaker was taken out one by one every 15 minutes at -15 캜.
As can be seen from the above Table 2, it was confirmed that the snow melting ability of the snow removing composition of the present invention was better than that of the snow removing agents using only chlorides of Comparative Examples 1 and 2.
(Test Example 3)
A specimen (50 cm x 2 cm) made of iron and aluminum was prepared to examine the metal corrosion resistance, and then immersed in a mixture of the snow remover composition and the water at a ratio of 1: 1 for 7 days. After measuring the weight change of the specimen before and after immersion, the corrosion amount was calculated according to ASTM F483.
The results are shown in Table 3 below.
As can be seen from the above Table 3, it was confirmed that the snow-reducing composition according to the present invention had significantly less corrosion resistance than Comparative Examples 1 and 2. Therefore, it was confirmed that the present invention has a very excellent effect of preventing corrosion by chlorine ions.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the present invention. Accordingly, the actual scope of the present invention will be defined by the appended claims and their equivalents.
Claims (5)
Wherein the chloride is mixed with calcium chloride and sodium chloride in a weight ratio of 1: 0.5 to 1: 1.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150166203A KR101632412B1 (en) | 2015-11-26 | 2015-11-26 | Eco-friendly snow composition for deicer |
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020150166203A KR101632412B1 (en) | 2015-11-26 | 2015-11-26 | Eco-friendly snow composition for deicer |
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| KR101632412B1 true KR101632412B1 (en) | 2016-06-21 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101747129B1 (en) * | 2017-01-06 | 2017-06-14 | (주)세명테크 | Eco-friendly solid-phase deicing agent and a method of producing the same |
| KR101764694B1 (en) * | 2017-03-31 | 2017-08-07 | (주)세명테크 | Eco-friendly solid-phase deicing agent and a method of producing the same |
| KR101983851B1 (en) | 2018-05-29 | 2019-05-30 | (주)하얀소금 | Eco-friendly snow composition for deicer |
| KR102483140B1 (en) * | 2021-12-17 | 2023-01-02 | 김영석 | Snow removal composition with excellent eco-friendliness and anti-freeze performance |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR0179334B1 (en) | 1995-03-04 | 1999-04-01 | 김유채 | Manufacturing method of non-chloride snow removal agent |
| KR101316286B1 (en) | 2013-03-25 | 2013-10-18 | (주)즐거운미래 | Process for an eco-friendly solid type deicer and an eco-friendly solid type deicer thereof |
| KR101361136B1 (en) | 2013-12-13 | 2014-02-12 | 김창욱 | Method of manufacturing liquid type deicer |
| KR101405139B1 (en) * | 2014-04-25 | 2014-06-10 | (주)세명테크 | Eco-friendly solution type deicer and its manufacturing method |
-
2015
- 2015-11-26 KR KR1020150166203A patent/KR101632412B1/en active IP Right Grant
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR0179334B1 (en) | 1995-03-04 | 1999-04-01 | 김유채 | Manufacturing method of non-chloride snow removal agent |
| KR101316286B1 (en) | 2013-03-25 | 2013-10-18 | (주)즐거운미래 | Process for an eco-friendly solid type deicer and an eco-friendly solid type deicer thereof |
| KR101361136B1 (en) | 2013-12-13 | 2014-02-12 | 김창욱 | Method of manufacturing liquid type deicer |
| KR101405139B1 (en) * | 2014-04-25 | 2014-06-10 | (주)세명테크 | Eco-friendly solution type deicer and its manufacturing method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101747129B1 (en) * | 2017-01-06 | 2017-06-14 | (주)세명테크 | Eco-friendly solid-phase deicing agent and a method of producing the same |
| KR101764694B1 (en) * | 2017-03-31 | 2017-08-07 | (주)세명테크 | Eco-friendly solid-phase deicing agent and a method of producing the same |
| KR101983851B1 (en) | 2018-05-29 | 2019-05-30 | (주)하얀소금 | Eco-friendly snow composition for deicer |
| KR102483140B1 (en) * | 2021-12-17 | 2023-01-02 | 김영석 | Snow removal composition with excellent eco-friendliness and anti-freeze performance |
| WO2023113518A1 (en) * | 2021-12-17 | 2023-06-22 | 김영석 | Snow removal composition having excllent eco-friendliness and anti-freezing performance |
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