SU981336A1 - Cryohydrate composition for treating frozing bulk materials - Google Patents

Description

(S) Cryohydrate FOR TREATMENT

SMOKED BULK MATERIALS

one

The invention relates to the control of the freezing behavior of bulk materials, including fuel coal, during the winter period of the year, in particular, to the compositions used to prevent freezing and thawing of materials.

A composition is known to prevent freezing of coal fuel to vehicles 1. Yu

The closest to the invention to the technical essence and the achieved result is a cryohydrate composition to prevent freezing on: syrp ores of non-ferrous metals 1,2, including 15 cryohydrate substances and water, May. %:

Ethylene glycol 50-60 Calcium Chloride 8-20 - Water 20

The disadvantage of this composition is its increased corrosive activity with respect to metal surfaces, high cost.

and the possibility of its application to a temperature of minus ZO-ZZ C.

The purpose of the invention is to increase the efficiency of the defrosting effect of cryohydrate raw materials, reducing corrosivity and resistance.

The goal is achieved by the fact that the cryohydrate composition for treating frozen aggregates, including an aqueous solution of cryohydrate components based on an ethylene glycol, contains a mixture of bottom glycol and ethyl methylcellulose as a cryohydrate component in the following ratio of components, May. %:

Mixture of bottoms

glycol production

and ethyl cellosolva

Water.

The cryohydrate composition contains bottoms (STP-y-3-ZO) of the following composition, May. Z:

Ethylcarbitol67-71

Ethylene glycol 18-23

Polyglycol mixture

and polycarbitol 9-11,5

The mixture of bottoms is a dark brown liquid with a density of 2СР С of not more than 1.1731, 180 r / CN with a conditional viscosity of 1, 5 degrees, with a specific sweet smell, mixed with water in any ratios.

In the study of aqueous solutions of vat condensates, it was found that the freezing temperature of the solution is minus at a concentration of 59 May. %

The low pour point of the composition allows it to be used in areas with severe climatic conditions (regions of the Far North, Siberia, and the Far East).

In addition, the combustion of the coal produced by the bottoms, the combustion products of the latter is CO and N5.0, i.e. the nature of the combustion products does not disturb the coal, 8 while the combustion of coal treated with a known composition results in the release of chlorine gas that further pollutes the environment

Distillation residues are a large-tonnage waste from the production of glycols and ethyl cellosolve and their utilization predetermines their low cost, which leads to a decrease in the cost of work to prevent the freezing of bulk materials and coal.

The composition is prepared by dissolving the bottoms of C1stats in water in the indicated ratios, and the order of dissolution of the components does not affect the final properties of the cryohydrate composition.

The table shows the results of a comparative determination of the properties of the proposed and known cryohydrate compositions.

The results presented in the table show that the freezing temperatures of the proposed formulations are within minus kJ-Qifc, which is well below the freezing point of a known composition.

Corrosion aggressiveness of the proposed composition in relation to the base metals is 1.8-2.5 times less than that of the known composition.

The defrosting speed is 20-25% higher than that of the known composition under the same conditions, and the strength of the freezing materials previously processed by the proposed composition, at the rate of 1, from the material's faith, decreases 3.5 times, while known composition of materials - only 2.6 times.

On average, the effectiveness of the defrosting effect of the proposed formulation is 33% higher than that of the known.

In addition, with the same temperature and humidity regimes of bulk materials and fuel coal, the consumption of the proposed composition for defrosting is 80% less than that of the known, and the cost of the proposed composition is several times lower than that of the known.

Taking into account the fact that in our country in winter, millions of tons of quarry bulk materials (sand, gravel, rubble, million tons of coal, of which at least 2S% freeze during transportation, are developed and transported annually, the widespread introduction of the proposed composition saves 5-6 million rubles a year.

By the fact that, in order to increase the efficiency of the defrosting effect, reduce the corrosivity and cost, it contains a mixture of bottom residues from the production of glycols and Etylceplosolva as a cryohydrate component in the following ratio of components, May. %:,

Mixture of bottoms

glycol production

and ethyl cellosolva

Water -k6

A mixture of polyglycols and polycarbitolol KZSources of information taken into account in the examination

1. Technical conditions TU 3 830160-77 Severin-2.

2. Authors certificate of the USSR W 652200, cl. From 09 to 3/18, 1979

Claims (2)

Claim 1. The cryohydrate composition for processing freezing bulk materials, including an aqueous solution of cryohydrate components based on ethylene glycol, characterized in that, in order to increase the effectiveness of the defrosting effect, reduce corrosion aggressiveness and cost, it contains a mixture of bottoms from glycol production and, as a cryohydrate component ethylcellosolve in the following ratio, May. % ·. * 0 A mixture of bottoms production of glycols and ethyl cellosolve 54-59 Water 41-46 2. Composition by π. 1, with the fact that it contains still bottoms of the following composition, May. %: Ethyl Carbitol Ethylene Glycol A mixture of polyglycols and polycarbitols 67-71 18-23 9-11.5.