Potassium formate containing loose products

FIELD: anti-conglomeration agents.

SUBSTANCE: invention relates to loose product based on potassium formate, which contains 0.1 to 1% water and 0.5-5% water-soluble conglomeration-preventing agent, such as potassium carbonate or potassium hydroxide, which possesses affinity for water and corresponds to equilibrium humidity below equilibrium 15% relative humidity (22°C) for potassium formate.

EFFECT: provided modifying and conglomeration preventing agents for potassium formate to allow it to achieve looseness under practical storage and processing conditions.

3 cl, 4 tbl, 4 ex

 

The present invention relates to granular products containing potassium formate as the main component.

The potassium formate as such is a relatively new industrial product. The solubility of K-formate in water is high, at 20°C it is possible to prepare stable solutions containing up to 78 wt.% potassium formate in water. It was previously established that aqueous solutions of K-formate can be used in drilling fluid is water-based and fluid for completion in oil and gas industry, for removing ice from runways of airports and the second coolant circuit of a nuclear reactor.

For the above mentioned applications, you often want To formate was supplied in the form of dry, free-flowing product. This is particularly important requirement is in the oil and gas industry. K-formate can be used to adjust the concentration of the drilling fluid based on potassium formate and liquid to completion, in such cases, it is also important that K-formate were dissolved quickly and without the formation of dry residues. However, due to the inherent properties of the potassium formate is usually difficult to handle and store, as it easily picks up moisture, causing caking of the product. Critical humidity To-diformate is approximately 15% relative humidity at ControlTemplate (22° C) and compared with her dew point -5°C in air. It means that the potassium formate will absorb water in almost all environmental conditions and should therefore be placed in packages with a dense coating against water diffusion.

Another problem stems from the fact that conditsionirovanie crystalline K-formate has a tendency to cake when stored for a very short time, even at very low water content, i.e. less than 0.2%. For example, 25 kg package conditioniong K-formate will become solid and hard within 24 hours, and the process will increase if the package store on pallets and kept under pressure of its own weight.

The main objective of the invention was to find a suitable agent to prevent caking, which would be compatible with the end use of K-formate, and to make the final bulk product.

Another objective was to obtain air-conditioned product on the basis of K-formate, quickly dissolving in the water.

In order to function properly when used in industry, especially when it is used in fluids for drilling and completions, a conditioning agent for the product on the basis of K-formate must meet the following requirements:

The specified agent preferably should have more low ravenous the second humidity, than the potassium formate to be able to bind residual water in the latter.

The agent must have a good effect to prevent caking.

Agent to prevent caking, should have a high solubility in water.

Agent to prevent caking, must have a small time of dissolution in concentrated solutions of potassium formate.

The modifying agent should not give conspicuous changes in the desired pH range liquid product (preferred pH = 9-11).

The basic concept on the basis of which the authors of the present invention conducted a search for a suitable candidate that meets all these requirements was to start with screening (selection) possible conditioning agents by measuring equilibrium moisture generated by each of the agents to prevent caking. This parameter characterizes the affinity agent to the water, which is very important.

The problem of caking of the crystal mass-To-formate associated with a high affinity to water this product. It is established that the water absorbed by the mass, is around each particle in the form of a thin film, which causes the dissolution of the product in the film of water. So between the particles are crystalline bridges that make the mass of viscous and solid, especially the military under the pressure of its own weight.

To deal with this mechanism, add the component having a higher affinity for water, that is, lower equilibrium moisture content than K-formate, which should adsorb water in bulk and create flowability for crystalline particles of K-formate.

The described mechanism is a well-known effect of agents that prevent caking, as, for example, silicates and starches, which are widely used. The solubility of these products in water, however, is very limited and most of them do not possess the appropriate affinity for the water to affect the crystalline product on the basis of K-formate.

Initial screening conducted by the authors of the present invention relates to the measurement of the equilibrium humidity of other possible agents. Such agents with a lower equilibrium moisture content than that of K-formate, should have a good chance to apply.

To test the working hypothesis and to develop products that meet the above requirements, conducted various tests. In addition, the authors of the present invention have found that you can get bulk products on the basis of K-formate containing 0.1-1 wt.% water, provided that the product contains 0.5-5 wt.% water-soluble agent to prevent caking, selected what about among carbonates, chlorides and hydroxides of alkali metals and having affinity to water, the corresponding equilibrium moisture content that is lower than the equilibrium relative humidity of 16% at 22°for potassium formate.

It was determined that the specified product preferably should contain 1-2,5 wt.% the specified agent to prevent caking. A positive effect was detected already at 0.5 wt.% agent to prevent caking, and in fact the upper limit is set to 5 wt.%.

The most preferred agents to prevent caking, was potassium carbonate or potassium hydroxide.

It was also found that as agents to prevent caking of the above product, applicable sucrose and/or mannose in quantities of 1-2 .5 wt.%. The most preferred form of this product was crystalline potassium formate containing potassium carbonate and/or potassium hydroxide as an agent for preventing caking.

Example 1

Chemical samples for measurement were mixed at room temperature for 1-2 days. 350 ml of sample was placed in a flask with a volume of 500 ml, leaving 150 ml air space above the sample. Through the holes in the rubber stopper for closing the opening of the flask, insert the device (Novasin) to measure otnositel the th humidity and a device for recording temperature, leaving the system sealed. The measuring tube recorder immediately placed in an air zone of the bulb above the sample product.

The flask with the sample was kept for 1 hour, and after 1-hour exposure was registered equilibrium temperature and relative humidity.

For the initial screening of potential agents were used to define the equilibrium partial pressure of water vapor), which indicates their ability to absorb water. The data obtained are presented in table 1, which shows the equilibrium partial pressure of water (vapor) at room temperature.

These agents were chosen mainly on the basis of literature data describing their ability to reduce the vapor pressure of water in mixtures with water, and also took into account the high solubility of the agents in the water.

Table 1
ComponentTemperature °With testing of productThe recorded relative humidity %The equilibrium partial pressure of water vapor mbar
The potassium formate23164,6
Lithium carbonate 23,443,512,4
Lithium bromide23,910,33,0
Sodium carbonate25,623,77,7
Sodium benzoate23,526,67,7
Sodium hydroxide23,610,22.9
Phosphate sodium ×2H2About23,723.26,7
Potassium carbonate24,010,33,0
The potassium bromide23,157,016,0
The potassium hydroxide23,610,22,9
The potassium thiocyanate24,844,513,8
Potassium acetate23,816,1the 4.7
Tartrate of potassium/sodium23,837,010,8
Potassium sorbate23,823,56,9
Calcium chloride ×2H2About23,311,33,2
Magnesium chloride ×6N2About23,910,43,1
Zinc chloride (anhydrous)22,8 10,32,8
Zinc sulphate ×7H2About23,963,718,7
D(+)-glucose23,824,57,2
D(+)-sucrose22,513,23,5
D(+)-mannose23,117,4a 4.9
Silica (Sipernat 22, Degussa)23,342,812,6
Silica (Sipernat 22S, Degussa)23,33711
Silica (Sipernat 50, Degussa)23,946,713,7
Silicate (GM1 Damolin)24,138,9the 11.6
Starch Caccava23,739,611,5
Starch SP123,7of 37.911,5

The equilibrium relative humidity of anhydrous potassium formate at 23°C is equal to 15%. Equilibrium relative humidity increases with increasing water content in the crystalline mass, and water content of 0.5% equilibrium relative humidity increased to 20%. This corresponds to the range of the equilibrium vapour pressure of water is 4.2 and 5.6 mbar.

Crystalline product based on potassium formate contains water in the range of 0.2-0.5%, to ensure the ecene flowability of the particles formate important to the residual water in the product was absorbed agent to prevent caking.

The obtained data are shown in table 1, indicate the affinity agent to the water. Preferred will be the agent with a higher affinity to water (with a lower partial pressure of water vapor)than the K-formate, connecting/absorbing water and providing flowability of the final product.

Based on the fact that the product on the basis of K-formate contains 0.2-0.5% of water and has the equilibrium partial pressure of water vapor at 23°C, equal to 4.2 and 5.6 mbar, agents that have a lower partial pressure of water vapor and therefore a higher affinity for water, theoretically should work as agents for preventing caking of the product on the basis of formate.

As can be seen from the results shown in table 1, in accordance with the above hypothesis should work agents such as potassium carbonate, potassium hydroxide, lithium bromide, calcium chloride, magnesium chloride and sucrose.

From table 1 it is evident that the known agents that prevent caking, such as silicates and starches, have too high equilibrium vapor pressure of water in order to work as agents for preventing caking of mixtures of products based on potassium formate.

The requirement of high solubility in the de agent, to prevent caking, excludes components, most of which are insoluble or has low solubility in water.

However, in order to find a suitable agent, the authors of the present invention were to test the most promising agents in terms of flowability and caking properties, by applying the known methods of testing.

Example 2

For testing the flowability of the authors of the present invention applied laboratory glass bins with holes 15.8 mm and 22 mm, respectively. The ability to pour measured by recording the time the rash of 1 kg of product based on potassium formate mixed with various agents to prevent caking, at doses of 1.5-3%.

Formate calcium, which is non-hygroscopic granular material, was used as a known environment for comparison. For each sample were conducted by two parallel experience. In the following table 2 presents the average results.

Table 2
MixtureThe time of the rash through the hole 15.8 mm (seconds)The time of the rash through the hole 22 mm (seconds)
K-formate, recently dried and conditsionirovanie16,7+0,14*6,90+0,14*
Formate, calcium, dry and conditsionirovanie16.78 in+0,527,15+0,08
K-formate + 1.5% lithium bromide12,36+0,184,53+0,06
K-formate + 3,0% lithium bromide11,18+0,014,54+0,04
K-formate + 1.5% potassium carbonate12,22+0,03to 4.52+0,05
K-formate + 3,0% potassium carbonate13,15+0,044,88+0,06
K-formate + 1,5% potassium hydroxide13,80+0,056,82+0,07
K-formate + 3,0% potassium hydroxide13,20+0,044,87+0,14
K-formate + 1.5% potassium acetateNo flowabilityNo flowability
K-formate + 3,0% potassium acetate11,40+0,104,78+0,20
K-formate + 1.5% of the tartrate of sodium/potassium12,17+0,06br4.61+0,11*
K-formate + 3.0% of the tartrate of sodium/potassium12,36+0,174,76+0,02
K-formate + 1.5% sodium carbonate12,06+0,015,00+0,01
K-formate + 3,0% sodium carbonate11,90+0,084,66+0,01
K-formate + 1,5 hydrogen phosphate sodium 12,13+0,064,30+0,07*
K-formate + 3,0% hydrogen phosphate sodium13,14+0,074,67+0,04*
K-formate + 1.5% calcium chloride11,75+0,044,50+0,01
K-formate + 3,0% calcium chloride12,36+0,174,76+0,02
K-formate + 1,5% Sipernat 2214,27+0,03to 5.21+0,02
K-formate +3,0% Sipernat 2215,06+0,055,58+0,02
K-formate + 1.5% glucoseFlowability impossibleFlowability impossible
K-formate + 3,0% glucoseFlowability impossibleFlowability impossible
K-formate + 1.5% sucrose14,63+1,52*6,75+0,354
K-formate + 3,0% sucroseof 14.25+1,20*6,75+0,495
*To create a flowability required concussion bin

Table 2 shows that the K-formate with low water content, recently dried and unmodified, had a lower time rash from the hopper to test the flowability compared with dry calcium formate, which is caused by the difference in the size and form of particles of two compared products.

Table 2 also shows that the most promising Agay is you, detected according to table 1 when tested in the bunker, showed questionable characteristics of flowability of mixtures of products. Agents that did not meet the requirements of a lower equilibrium vapor pressure of water than 4,2-5,6 mbar, created problems when testing flowability (marked with an asterisk *), except mixtures of silicates.

For further improvement of the selection of a suitable agent to prevent caking, the authors present invention was performed by standard tests hardening of the crystalline product, mixed with the most promising agents found according to table 2.

Some of mixtures on the basis of the crystalline product is shown in table 2, which did not meet the requirement of the steam pressure in accordance with table 1 were included in the trials for curing, to test the hypothesis, on which is based the method of selection.

Example 3

Tests on caking conducted for the same mixtures as indicated in table 3.

Samples for testing (approximately 100 g)shown in table 3, was filled with small plastic bags of size 10×10 cm and tightly welded the hole. Packages for testing was placed between 2 metal plates and to the top plate has applied pressure to the e 3 bar. Pressure corresponded to a load of 300 kg or approximately 1425 kg packages. The samples were left under pressure for 3 days, 72 hours.

After 3 days, the sample was removed.

The contents of each package was placed on a sieve with holes of 3.5 mm Sieve was installed above the weighing pan, which weighed powder released from the sieve. The sieve was connected to a follower who asked to cite the amplitude of the displacement (stroke), and the number of movements required to release SITA, registered and entered in the computer.

The results were interpreted and classified as follows:

The number of movements <5: Risk of caking unlikely or very low.

The number of movements >5: Risk of caking likely.

The probability of hardening or caking increases linearly with the number of required movements of the sieve at a value above 5.

The number of curing presented on the resulting curve is equal to the number of movements needed to break the solidified material.

For each of the samples was carried out 3 parallel tests.

The test results on cured samples of K-formate with the addition of the agent to prevent caking, presented below in table 3 (each sample for testing was investigated in 3 Parallels).

Table 3
SampleThe average number of curingLimit the number of curingNote
K-formate conditsionirovanie24<5Compressed
K-formate in the form of particles, anhydrous0<5Does not cake
Formate calcium conditsionirovanie0<5Does not cake
K-formate + 1.5% potassium carbonate0<5Does not cake
K-formate + 3,0% potassium carbonate0<5Does not cake
K-formate + 1,5%potassium hydroxide2,3<5Does not cake
K-formate + 3,0%potassium hydroxide0<5Does not cake
K-formate + 1.5% potassium acetate22,2<5Compressed
K-formate + 3,0% potassium acetate14,8<5Compressed
K-formate + 1.5% lithium bromide20,1<5Compressed
27,1<5Compressed
K-formate + 1.5% sodium carbonate55,5<5Compressed
K-formate + 3,0% sodium carbonateto 92.1<5Compressed
K-formate + 1.5% sodium hydrogen phosphatea 50.5<5Compressed
K-formate + 3,0% hydrogen phosphate sodium56,9<5Compressed
K-formate + 1.5% of the tartrate of sodium/potassium46,6<5Compressed
K-formate + 3.0% of the tartrate of sodium/potassium31,6<5Compressed
K-formate + 1.5% calcium chloride14,3<5Compressed
K-formate + 3,0% calcium chloride13,6<5Compressed
K-formate + 1,5% D-glucose69,2<5Compressed
K-formate + 3,0% D-glucose110,3<5Compressed
K-formate + 1,5% D-sucrose2,6<5Does not cake
K-formate + 3,0% D-sugars is 1<5Does not cake
K-formate + 1,5% Sipernat 2286,4<5Compressed
K-formate + 3,0% Sipernat 2267,0<5Compressed

From table 3 it can be seen that the calcium formate, Comparators, as expected, did not bridge, harden, clog.

Also did not bridge, harden, clog anhydrous K-formate in the form of particles (particles 3 mm), obtained by high temperature melting. This result confirms that the problem of caking crystalline mass creates residual water and the effect of formation of crystalline bridges associated with the residual water.

Anhydrous K-formate in the form of particles did not bridge, harden, clog during the test, but he quickly gains moisture, if it is in the air, and then the particles will begin to crust formation. In order to avoid caking of such a product on the basis of K-formate, it is important that he didn't gain moisture during storage and handling.

As can be seen from the results presented in table 3, only the potassium carbonate, sucrose and potassium hydroxide to give satisfactory results in the test for cure. The other two tested agent with greater affinity for water than the potassium formate, which are lithium bromide and calcium chloride on the Vali too high curing, and only in special cases can be used to prevent caking K-formate.

As the crystalline K-formate is often used in the oil and gas industry for the enrichment of liquids on the basis of K-formate drilling and completion of wells, it was important to investigate the ability of various mixtures of products to form a solution for use, free from particulates. Enrichment systems on the basis of K-formate most often occurs in the range with a relative density of 1.5-1.57 kg/L.

Example 4

In lab tests the solubility investigated the ability to enrich aqueous solution of K-formate with a specific gravity (relative density) of 1.53 (71% potassium formate) to the relative density of 1.57 (75% potassium formate) with dry crystalline product, which added to the appropriate agents to prevent caking.

Results

Table 4 presents the results and shows the solubility of modified products on the basis of K-formate:

Table 4
The dry productRel. VL-TB to enrich kg/lRel. VL-TB after enrichment kg/lpHResults
K-formate + 1.5%2CO31,5231,58612,9Transparent saturated solution of salt
K-formate + 1,5%LiBr1,5231,587the 11.6Transparent saturated solution of salt
K-formate + 1,5%CaCl21,5231,58411,5The precipitate
K-formate + 1.5%KONA1,5231,58515,4Transparent saturated solution of salt
K-formate + 1.5% sucrose1,5231,5810,5The precipitate

As can be seen from table 4, the addition of dry K-formate containing calcium chloride and sucrose as agents to prevent caking, to a solution of K-formate, leads to the deposition, and accordingly such an agent to prevent caking, will not function, despite its positive properties, are presented in table 1. Similar also happens with an agent to prevent caking, based on the chlorides of magnesium and zinc.

Although lithium bromide was tested for solubility, its practical applicability is limited to price and compatibility with the system for drilling and completions.

The above example clearly demonstrates that the authors of the present invention succeeded in obtaining modifying and preventing caking agents for HUF is IATA, in reaching its flowability in terms of practical storage and processing. Although initial tests were carried out for several possible agents, surprisingly few of them meet the requirements for practical application.

1. Bulk product based on potassium formate containing 0.1-1 wt.% water and water-soluble agent containing potassium, characterized in that the product contains 0.5-5 wt.% water-soluble agent that prevents caking selected from potassium carbonate and potassium hydroxide and having affinity to water, the corresponding equilibrium moisture lower than the equilibrium 16%relative humidity at 22°for potassium formate.

2. Bulk products based on potassium formate according to claim 1, characterized in that the product contains 1-2,5 wt.% water-soluble agent to prevent caking.

3. Bulk product based on potassium formate according to claim 1, characterized in that the potassium formate is a crystalline potassium formate.



 

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EFFECT: reduced corrosive activity of composition and crystallization temperature below -30°C, and reduced expenses due to avoided use of expensive high-purity sodium formate.

2 cl, 1 tbl, 7 ex

FIELD: road maintenance.

SUBSTANCE: invention is designed for use in municipal economy area to remove snow-and-ice covers on pavements and sidewalks. Antiicing agent is an aqueous solution with 30 to 100% of a chemical, namely alkali caprolactam production effluent including 25-45% dry solids, 18-30% organic acid sodium salts (calculated as sodium adipate), 0.7-0.8% cyclohexanol, 8-10% resin, and water (in balancing amount), pH of solution being 10-13.

EFFECT: increased ice thawing efficiency, reduced corrosion activity, lowered freezing point, and disposed production waste.

1 tbl

FIELD: chemical technology.

SUBSTANCE: invention relates to technology for preparing anti-glazed preparations. Method involves mixing concentrated solutions of calcium or magnesium chloride as metal chlorides and ground sodium chloride in the required ratio to form suspension that is subjected for treatment in the boiling layer device. The suspension based on magnesium chloride is treated at temperature 110-140°C and the suspension based on calcium chloride is treated at temperature 130-170°C. Before the thermal treatment metal phosphates as anti-corrosive additives are added to the suspension. Hallite spent materials are used as sodium chloride and solutions obtained after processing carnallite ores are used as magnesium chloride. Method provides improvement of physical-mechanical properties of the preparation that provides uniformity of its applying on surface and promotes to uniform thawing the snow-glazed mass in roads.

EFFECT: improved and valuable properties of preparation.

4 cl, 2 tbl, 4 ex

FIELD: chemical industry; the agents and the methods for elimination of icing-up, and snow and ice thawing.

SUBSTANCE: the invention presents the agent for elimination of the icing-up, which is made in the form of the water solution, as well as the method of thawing of the snow and ice. The agent contains: a) 51-70 % of the alkali metal formate; b)0.001-1 % of surfactant; c)0.0001-1 % of antifoam agent, d) 0.001 1 % of the corrosion inhibitor; the rest - water. The method of snow and ice thawing provides for application of the solution on the iced-up section of the highway for deicing ( 5-100 g/m2 of the indicated agent solution). The technical result of the invention is the high efficiency of de-icing of the roads.

EFFECT: the invention ensures the high efficiency of de-icing of the roads.

9 cl, 1 tbl

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

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: 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: 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: 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

The invention relates to an improved method of separation of polyols, such as neopentyl glycol or atrial, and sodium formate or calcium, comprising adding to the mixture of the partial organic solvent, in which the polyhydric alcohol is dissolved, the crystallization of sodium formate or calcium, Department of formate sodium or calcium from the solution of a polyhydric alcohol in an organic solvent, for example, by filtration, recycling of organic solvent, cooling the solution and crystallization of a polyhydric alcohol, and as the organic solvent used solvent aromatic series such as toluene, after adding to the mixture of the partial substances organic solvent, the resulting mixture is heated to boiling point and produce at this temperature simultaneously: dehydration of the mixture by distillation with water recirculation separated from water, organic solvent, crystallization dissolved in an organic solvent, sodium formate or calcium and dissolution in an organic solvent, a polyhydric alcohol
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