A method of obtaining a de-icing reagent
The invention relates to a method for de-icing composition of the reagent for treatment of road and airfield pavements. The method involves mixing calcium chloride with water, and then in an aqueous solution of calcium chloride is added a solution of magnesium chloride and the resulting mixture is injected antifreeze glycol component (COG) in the following ratio, wt.%: calcium chloride - 10,6-22,0, magnesium chloride - 5,3-12,0, COG - 4,0-30,0, water - the rest. The technical result - the creation of an effective reagent available, with good melting properties at low temperature with a low degree of corrosion, do not have a negative impact on the environment. table 1. The invention relates to a method for deicing composition aqueous solution for processing from ice formations road and airfield pavements.A method of obtaining anti-icer - anti-icing composition used for the elimination of snow and ice formations.with. The USSR 272462, 1970). The composition contains calcium chloride or its mixture with sodium chloride, in which for the purpose of preventing corrosion of metals injected sodium nitrite calcium in the concentration at high temperatures, crystallized, dried and Packed.The disadvantages of this method include high energy costs. In addition, the use of such composition on the roads has a negative impact on the plants growing along the roads.Known de-icing reagent containing calcium chloride and(or) sodium chloride and / or urea and 0.01-100% polymer of ethylene oxide (polyoxide), which is suggested for use before you freeze water on concrete and asphalt roads, to prevent their destruction (U.S. patent 4094805, 1978).The disadvantage of this reagent is not sufficiently low freezing point (not below minus 23oC).The closest analogue of the claimed invention is the anti-icing composition of an aqueous solution comprising calcium chloride, urea and corrosion inhibitor for metal surfaces (RF patent 2169751, 2000), designed for surface treatment of roads. The composition includes calcium chloride, urea, and further comprises a corrosion inhibitor for metal surfaces from a number of Quaternary ammonium compounds, such as polyaniline or polyvinilpirolidone chloride or mixtures thereof, in the following However, this reagent is effective when a large flow rate.The present invention is to create an efficient, affordable, with good melting properties at low temperature crystallization reagent with a low degree of corrosion, do not have a negative impact on the environment, which may be used both before and after freezing of water on the treated surface.The problem is solved in such a way that in the process for de-icing reagent comprising a mixture of calcium chloride and water, add an aqueous solution of magnesium chloride and the resulting mixture is injected antifreeze glycol component (COG) in the following ratio of initial components, wt.%: Calcium chloride - 10,6-22,0 Magnesium chloride - 5,3-12,0 COG - 4,0-30,0 Water - the Rest
Calcium chloride, calcined take 1 grade according to GOST 450 with ISM. 1, 2, 3. The solution of magnesium chloride technical take on THE 2152-063-00209527-99 or prepared from magnesium chloride crystal.Antifreeze glycol component take on THE 2422-01-50612932-00 and source components include ethylene glycol, sodium benzoate, borax, caustic soda, sodium nitrite, captax, butyl alcohol, steam condensate and antifoam.This reagent,28 g/cm3for 1-1,5 hours. When this happens exothermic reaction with increasing temperature up to 80-90oC. To the resulting solution of calcium chloride immediately add a solution of magnesium chloride to the ratio of 1:2 on the base material and stirred for 1-1 .5 hours. Then in a solution of salts add COG and stirred the mixture for 0.5-1 hour. The result: an anti-icing agent, whose density is from 1.16 to 1.28 g/cm3.To prove the conformity of the way the criterion of "Industrial applicability" are examples of the method of calculation per ton of reagent.Example 1.In the reactor per 1 tonne load precondensed in the amount of 450 kg, add 186 kg calcined calcium chloride and stirred for 1-1 .5 hours. In the exothermic reaction the temperature of the solution rises to 80-90oC. thereafter, the reactor was added an aqueous solution of magnesium chloride in the amount of 93 kg per basic substance and the mixture is stirred for 1-1 .5 hours until complete dissolution of the salts. Then to the resulting salt solution add 50 kg of COG and again stirred for 0.5-1 hour. The resulting antigal - ,28 g/cm3; pH from 6 to 8.5; corrosive effect on metals at 20o(Zinc coating and steel) 0,040 g/m2hour, on the concrete - 0,040 cm3/cm2.Example 2-20 carried out analogously to example 1 by changing the quantitative ratio of the initial components. Qualitative indicators de-icing reagent obtained in accordance with examples (1-20), are summarized in table. The tests were carried out according to THE 2149-002-50612932-01.From the presented data shows that the claimed method allows to obtain environmentally friendly anti-icing agent on energy-saving technologies with good technical parameters: temperature from freezing to -60 -21oWith that provides the action of the reagent for a long time, coefficient of corrosion on the zinc and steel from 0.020 to 0.060 g/m2hour, on the concrete from at 0.020 to 0.040 cm3/cm2.
A method of obtaining a de-icing reagent comprising a mixture of calcium chloride with water, characterized in that an aqueous solution of calcium chloride is added a solution of magnesium chloride and the resulting mixture is injected antifreeze glycol component, with Saudi glycol component 4,0-30,0
Water - The Rest
FIELD: road servicing industry.
SUBSTANCE: the invention is dealt with the road servicing industry, in particular with the methods of extirpation of ice covering on motorways, bridges, flyovers, and also aerodromes. The method of the roadway covering slipperiness prevention provides for application of a roadway ice covering suppressing reactant based on acetate, in the capacity of which use a solution with pH=7-9.5, containing components in the following ratio (in mass %): magnesium acetate 13-17, potassium acetate 8-16, potassium hydrocarbonate 5-8, potassium carbonate 2-6, water-insoluble impurities 0-6, water - the rest. The roadway ice covering suppressing reactant may additionally contain a fired limestone in amount of 3-5 mass % in terms of calcium oxide. The method of production a roadway ice cover suppressing reactant for a roadway covering slipperiness prevention provides for mixing of a component containing a magnesium compound, iced acetic acid and water, in the capacity of the component containing the magnesium compound is used brucite, the stirring is exercised in two stages: first they continuously agitate brucite with water and a part of iced acetic acid in a stoichiometric ratio at the temperature of 50-70°C within 50-80 minutes, then, not terminating mixing at the same temperature in the produced mix with pH=5-6 add the rest of ice acetic acid and then add potash in amount exceeding by 0.1 - 6 % the stoichiometric ratio and continue agitation till production of the roadway ice cover suppressing reactant - a solution with pH = 7-9.5 with the above indicated composition. The used roadway ice cover suppressing reactant has composition mentioned above. The technical result consists in - maintenance of the low temperature at the reactant usage, ensuring the passing ice covered roadways motor vehicles metal corrosion protection and at use as the airfield runways coatings - the corrosion protection of metals used in aircraft designs as well. The roadway coating treated with the reactant has a high coefficient of adhesion, that reduces the accident rate on the roadways.
EFFECT: the invention ensures, that the roadway coating treated with the reactant decreases the accident rate on the roadways.
6 cl, 2 tbl, 4 ex
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.
FIELD: special reagents.
SUBSTANCE: invention relates to substances for applying on surface to prevent or diminish adhering ice, mist or water on it, for prevention of icing, in particular, to anti-glaze of ice reagents. The composite comprises the following components, wt.-%: calcium chloride, 25-32; urea, 2-7; sodium nitrite, 0.03-1.0, and water, the balance. Invention provides preparing the composite harmless for environment that doesn't show harmful effect on environment, doesn't corrode road coatings, and inhibits corrosion of metals. Agent shows economy and high effectiveness.
EFFECT: improved and valuable properties of reagent.
2 cl, 1 tbl
FIELD: road-transport industry.
SUBSTANCE: method includes applying substance on asphalt-concrete mixture. As substance silicon-organic modifier is used, loss of which at 1 m2 of area of pre-placed on road asphalt-concrete mixture at temperature 80-100°C is no less than 0,3-0,5 kg. After applying modifier, asphalt-concrete mixture is rolled.
EFFECT: higher efficiency, no corrosive effect on metals, effective at temperature above -20°C.
2 cl, 3 tbl, 3 ex, 1 dwg
FIELD: domestic chemistry.
SUBSTANCE: invention relates to agents using against misting and icing windshields in transports, sight glasses in agent of individual protection and can be used in living conditions for prevention showcase glasses icing. The composition comprises the following components, wt.-%: polyoxyethylene glycol ester of synthetic primary higher alcohols of (C12-C14)-fraction as a surface-active substance, 6-25; urea or thiourea, or mixture of urea and thiourea, 1-20; glycerol, 5-25; ethylene glycol, 5-41; dye, 0.0005-0.02, and a solvent, the balance. Propyl alcohol as propanol-1 or propanol-2 can be used as a solvent. The composition elicits an anti-misting and anti-icing properties, provides two-sided protection of sight glasses of transport agents and agents of individual protection in cooling the protecting glass surface up to -40°C, elicits the prolonged protective effect, it doesn't solidify at the environment temperature below -40°C and doesn't require the special technical devices for its applying.
EFFECT: valuable properties of composition.
3 cl, 1 tbl, 10 ex
FIELD: Composition of an anti-icing water solution for roads surface treatment.
SUBSTANCE: the invention is pertaining to production of composition of an anti-icing water solution for roads surface treatment against a winter slipperiness (snow rolling-ups, a glaze ice, black ice) n the roads and streets in cities and settlements. The composition contains, in mass %: 20-27 calcium chloride, 5-30 ethyl alcohol, 0.3-5 corrosion inhibitors (borax or sodium nitrite or their mixture), the rest - water. The technical result is - an increase of effectiveness of the composition application, an increase of friction coefficient due to a decrease of the ice density, a raise of the composition ice melting capacity.
EFFECT: the invention ensures an increase of effectiveness of the composition application, an increased friction coefficient and a decreased ice density, a raise of the composition ice melting capacity.
1 cl, 1 ex, 2 tbl
FIELD: materials for miscellaneous applications.
SUBSTANCE: grain mixture comprise, in mass %, 15-45% of compressed first salt of alkaline or alkaline-earth metal and 85-55% of the second salt of alkaline or alkaline-earth metal. The first salt is a waterless hygroscopic salt.
EFFECT: reduced cost.
14 cl, 4 dwg
FIELD: preventive means against freezing and sticking of loose materials to walls of mining and transport equipment; prevention of dusting on interim roads, open-cut mining; protection of rolling stock against freezing and blowing-off of loose materials, coal and peat for example.
SUBSTANCE: preventive means is made in form of mixture of solvent and thickening additive of oil nature. Used as solvent are distillation residues of coke and by-product process and/or by-products of production of butadiene, isoprene, isobutylene, ethylene both independently and in mixture with distillation residues of production process of polymers, pyrolysis residues, benzene, styrene and distillation residues of production of butanol, isobutanol, 2-ethyl hexanol acid and 2-ethyl hexanol. Solvent may additionally contain gas oils of thermal and catalytic cracking and gas oils of coking process. Used as thickening additives are mineral and synthetic oils of all kinds, mixture of used oils, oil sludge, oil residues and oil fuel. Components of thickening additive and solvent are used at any combination. Novelty of invention is use of wastes of various processes of oil and petroleum chemistry products.
EFFECT: extended field of application; cut costs; enhanced ecological safety.
5 cl, 1 dwg, 2 tbl, 17 ex
FIELD: suppression or reduction of icing on surfaces by means of antiicing compounds.
SUBSTANCE: proposed anti-icing compounds contain succinic acid and/or succinic anhydride and neutralizing base, sodium hydroxide, potassium hydroxide or ammonium hydroxide in particular. When mixed with water anti-icing compounds form succinates in the course of reaction which causes fast liberation of heat sufficient for melting ice on surface. According to other versions, anti-icing compounds contain glycol which inhibits repeated icing on cleaned surface. Specification gives description of sets of compounds for melting snow and ice.
EFFECT: enhanced efficiency of melting snow and ice on aircraft and territories of their operation.
29 cl, 11 dwg, 7 tbl, 2 ex
FIELD: motor-car industry; other industries; methods of production of the anti-icing reactant.
SUBSTANCE: the invention is pertaining to the method of production of the anti-icing reactants for maintenance of roads in winter. The method of production of the anti-icing reactant based on sodium chloride and calcium chloride provides for mixing of the sodium chloride with calcium chloride and their heating and drying. Sodium chloride crystals are coated with the atomized solution of calcium chloride and dried in the "boiling bed" kiln with production of the double-layer granules, the outer layer of which is composed out of calcium chloride. Sodium chloride crystals are coated with calcium chloride in two phases. The forming small particles of calcium chloride are fed into the cyclone, whence the cyclone dust of the calcium chloride is fed into the mixer for intermixing with the wet crystals of sodium chloride. The produced anti-acing reactant has the improved physicochemical thermodynamic properties.
EFFECT: the invention ensures, that the produced anti-acing reactant has the improved physicochemical thermodynamic properties.
3 cl, 1 ex, 2 tbl