Anti-glaze of ice preparation

FIELD: chemical industry.

SUBSTANCE: invention relates to preparations used for prevention and removal of snow-ice formations in roads. An anti-glaze of ice preparation comprises the following components, wt.-%: calcium chloride, 15-50; sodium chloride, 48.5-83.5; potassium ferricyanide, 0.2-0.5, and sodium dihydrogen phosphate, 0.3-1.0. Anti-glaze of ice preparation in granulated form is resistant against caking, inhibits corrosion of metals and reduces inhibitory effect of chloride on plants.

EFFECT: improved and valuable properties of preparation.

 

The invention relates to the chemical industry, namely to medicines, in particular for the prevention and removal of snow and ice formations on the roads.

Known preparations for the removal of snow and ice formations on the basis of sodium chloride [Patent RU No. 2209823, publ. 2003], where the corrosion inhibitor and substances that reduce the negative effects on plants used disubstituted phosphates of alkali metals (sodium and potassium) in the following ratio, wt.%

Sodium chloride 97,5-99,2

Disubstituted phosphates of alkali metals Else

The disadvantage of the drug is its high corrosion activity and a significant dampening effect on plants. When the concentration of the phosphate additive is lower than 0.8 wt.% its action as an inhibitor of corrosion generally unnoticed.

The closest technical solution is the anti-icer containing calcium chloride or its mixture with sodium chloride, in which the corrosion inhibitor contains nitrite-nitrate of calcium in the amount of 2-40 wt.% (ed. mon. SU # 272462, publ. 1970).

A disadvantage of the known technical solution is low corrosion activity of nitrite-nitrate of calcium, as well as quite a lot of his required amount. In addition, the dampening effect of chloride on plants does not Compensare is expected.

In the proposed according to the invention granular de-icing the drug on the basis of chlorides of alkali and alkaline earth metals with a small additive effect of protivosvertyvayuschih, inhibiting corrosion of metals and reduction of inhibitory action on plants.

This result is achieved in that in the production of granular de-icing of the drug, which includes calcium chloride in the amount of 15-50 wt.% and sodium chloride in the amount of 48.5-to 83.5 wt.%, in the mixer before granulator served in powder form potassium genesisintermedia in the amount of

0.2 to 0.5 wt.% and one-deputizing sodium phosphate (monolatry phosphate) in an amount of 0.3 to 1.0 wt.%.

Potassium genesisintermedia is designed to reduce corrosion of metals and partial dissolution of corrosion products, and to reduce caking of the product. At concentrations below 0.2 wt.% its action is practically ceases to affect. At concentrations above 0.5 wt.% the effect of the additive is practically no longer increases.

Monolatry phosphate itself is a fertilizer and Supplement it in this drug has no harmful effect on plants (in particular, on the roadside lawns).

At the concentration of monolatry phosphate is less than 0.3 wt.% its effect is almost imperceptible, when the oxygen is the radio more than 1 wt.% can not be lowered pH in the effluent.

De-icing the drug is primarily white granules with a size of 2-5 mm non-toxic, non-corrosive, non-flammable.

Example 1

This drug was prepared by mixing of 21.9 kg CaCl2(to 21.9 wt.%); 77,2 kg (77,2 wt.%) NaCl (table salt technical); 0.6 kg (0.6%) NaH2PO4(mark analytical grade) and 0.3 kg (0.3 wt.%) To3[Fe(CP)6] (mark H). Got a homogeneous solid grey bulk weight 0,73 kg/DM3. Caking and certainest of the drug received amounted to not more than 0.85 MPa. The corrosion rate 3 in contact with this drug does not exceed 0.02 mm/year.

Example 2

This drug is in the form of granules obtained in the granulator, mixing 42,0 kg (42,0 wt.%) CaCl2(calcium chloride anhydrous); 56,8 kg (56,6 wt.%) NaCl (table salt technical); 0.8 kg (0.8 wt.%) NaH2PO4(mark analytical grade) and 0.4 kg (0.4 wt.%) K3[Fe(CN)6] (mark H). Granules of the drug is a white, slightly grayish had a size of 2.5 - 4 mm. At the store during one of the summer season, sliianie the drug was not observed. Weight gain due to adsorption of atmospheric moisture was less than 1%. The value of corrosion rate is the same as in the previous example.

1. This product containing calcium chloride in a mixture with sodium chloride, characterized in that esoteric potassium genesisintermedia and one-deputizing sodium phosphate in the following ratio of components, wt.%:

Calcium chloride 15-50

Sodium chloride 48,5-83,5

Potassium genesisintermedia 0,2-0,5

One-deputizing sodium phosphate 0.3 to 1.0

2. This drug according to claim 1, characterized in that the form is in the form of granules with a size of 2-5 mm



 

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