Deicing composition

 

(57) Abstract:

The invention relates to the chemical industry. The composition contains 2-3 atomic alcohols, ammonium acetate, magnesium acetate and water, and ammonium acetate and magnesium acetate are an aqueous solution obtained by evaporating a mixture of by-product and the wash water in the production of ammonia fertilizer to a concentration of 20-60 % when the content of 2-3 atomic alcohols of 0.1-10 wt.% from the finished composition. The technical result - expanding Arsenal of anti-icing compositions with improved efficiency and multifunctional range of applications for prophylactic treatment of road surfaces, as well as for working with thick and thin layers of ice and snow. 4 C.p. f-crystals, 1 tab., 2 Il.

The invention relates to the chemical industry and relates to deicing compositions.

The problem of dealing with snow and ice formations there long, however, and it is still not fully resolved.

Combating winter slipperiness are in three areas:

- to improve the adhesion of the wheels with the ice-covered floor;

- remove snow and ice formations from the road;

to prevent about the s with winter slipperiness:

- friction;

- thermal;

- mechanical;

- chemical;

biochemical.

There are a number of domestic developments inorganic and hybrid deicing means suitable for the climatic conditions of our country. It tools such as NNK consisting of 90% of cashflowing of calcium chloride and 10% of the composition NOC (a mixture of nitrites and nitrates of calcium). This tool is applied in the form of a 30% solution.

In the United States a patented product containing the chlorides of sodium and potassium in a ratio of from 1: 1 to 4: 1 and Supplement of urea in an amount of 1-4 wt.%. This tool can be used both in solid form and in solution.

In Russia also patented a similar ANS tool, containing, along with calcium nitrate and urea nitrate magnesium, phosphates and formaldehyde polymer.

These reagents quickly interact with ice, but have enough of a good fusing ability, in addition, due to the high cost of these reagents they have a limited range of applications.

The closest analogue is essentially an anti-icing composition comprising 2-3 atomic alcohols, ammonium acetate, magnesium acetate and ctive when using it due to its high evaporation, not enough high environmental friendliness and low fixation on the road surface.

The objective of the invention is to expand the Arsenal of anti-icing compositions with improved efficiency and multifunctional range of applications, both for prophylactic treatment of road surfaces, and to work with thick and thin monolithic layers of ice and snow and safe for the environment.

This task is solved in that the deicing composition comprises 2-3 atomic alcohols, ammonium acetate, magnesium acetate and water, and the ammonium acetate and magnesium acetate it contains in the form of an aqueous solution obtained by evaporating a mixture of by-product and the wash water in the production of ammonia fertilizer to a concentration of 20-60%, and the content of 2-3 atomic alcohols is 0.1-10 wt.% from the finished composition.

As a 2-3-atomic alcohols deicing composition comprises glycerin and/or ethylene glycol.

While anti-icing composition may further comprise a monohydroxy alcohols, which use methanol and/or ethanol, and it may optionally contain calcium acetate and/or acetate ora NaCl on the ability to melt ice at different temperatures. For testing we used a specially prepared ice thickness 30 mm flat Plexiglas bowl. The temperature in the freezer was regulated with an accuracy of 0,5oC. a sample of the anti-icing composition in liquid form is deposited on the surface randomly.

At certain time intervals was collected solution. The results are shown in table (by volume dedicated solution).

The table shows that the fusing ability of the claimed composition is much higher than the same indicator of NaCl. Especially this difference is large at low temperatures.

The freezing temperature of the deicing means is its most important characteristic.

Freezing point is the temperature at which the formation of new ice crystals. Near freezing temperature (expected) solution of deicing "Tatralandia" frozen crystals of the same reagent to prevent hypothermia.

The cooling solution is not less than 10 minutes after the temperature reaches freezing. The freezing point is taken as the temperature in the point of intersection of the curves depending on the temperature of Musee equipment:

- cooling bath, which represents a 3-liter Dewar vessel filled with liquid nitrogen;

- transparent Dewar vessel with a capacity of 300 ml with a solution of de-icing facilities;

- laboratory stirrer of stainless steel, driven laboratory motor.

Testing solutions for each concentration was repeated to obtain comparable results. The results are shown in the graph of Fig. 1.

The icing is mainly due to the weakening or elimination of coupling between the ice and the road surface. So also were tested for utility. In our tests used a controlled and homogeneous ice and substrate (asphalt).

When testing the area of degradation was calculated for 1 ml of anti-icing composition. Ice thickness at all temperatures was 18 mm

The technical result of the present invention is the creation of environmentally safe composition with a eutectic temperature -39 deg. With high melting ability, not aggressive when exposed to the metal, as well as reducing consumption of the composition and the expansion of the range of de-icing compounds and compositions.

This is to ensure what about the solution with a concentration of 20-60%. And the connection itself is a waste. In addition, only selected ratio of components in the composition will provide the desired result. The claimed composition is a clear, colorless liquid without foreign inclusions. The composition is non-toxic, non-flammable, non-explosive non-aggressive towards aluminum AMC, duralumin DL-16 and the concrete grade 400. Eutectic temperature -39 deg. C. the compositions are presented in examples 1-3 (see below).

Tests were carried out on corrosion activity. For testing we used the samples nekorrelirovannogo steel body. The results were evaluated by the weight loss of steel in 20 days. It was noted that the composition of nagresign and its impact on metal is a marked inhibition of corrosion in time. The composition can be recommended for preventive treatment of road surfaces, you can use it during the snowfall, and to fight with thin layers of solid ice at temperatures down to minus 39 degrees. C. This composition can be applied in cases of the presence of thick monolithic ice and compacted compacted snow at temperatures up to minus 39oC.

These tests were conducted to determine ocellana composition, contains 2 - 3 atomic alcohols, ammonium acetate, magnesium acetate and water, characterized in that the ammonium acetate and magnesium acetate it contains in the form of an aqueous solution obtained by evaporating a mixture of by-product and the wash water in the production of ammonia fertilizer to a concentration of 20 to 60%, and the content of 2 - 3 atomic alcohols is 0.1 - 10 wt.% from the finished composition.

2. Anti-icing composition on p. 1, characterized in that 2 - 3 atomic alcohols includes glycerol and/or ethylene glycol.

3. Deicing composition according to any one of paragraphs.1 and 2, characterized in that it further comprises monohydroxy alcohols.

4. Deicing composition according to any one of paragraphs.1 to 3, characterized in that as monohydroxy alcohols it contains methanol and/or ethanol.

5. Deicing composition according to any one of paragraphs.1 to 4, characterized in that it further contains calcium acetate and/or potassium acetate and/or sodium acetate.

 

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