RU2360796C2 - Method for production of emulsol for lubrication of metal moulds during manufacturing of concrete and reinforced concrete products and emulsol produced by this method - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: according to method for production of emulsol for lubrication of metal moulds during manufacturing of concrete and reinforced concrete products, spent petroleum oils are mixed with salts of higher fatty acids and reagent - potassium hydroxide at the following ratio of components, wt %: spent petroleum oils - 96-98, salts of higher fatty acids - 1-2, potassium hydroxide - 1-2, prepared composition is heated up to 100°C-250°C with continuous mixing for 2 hours, then settled for 72 hours and supernatant fluid is decanted - emulsol. Emulsol prepared by above mentioned method.

EFFECT: higher efficiency for unloading of concrete and reinforced concrete products from metal moulds.

2 cl, 1 ex

Description

The invention relates to methods for producing and compositions of emulsols for the lubrication of metal forms in the manufacture of concrete and reinforced concrete products.

A known method for producing emulsol is that a mineral oil at 50 ° C is emulsified in water by a composition of triethanolamine with oleic acid and a condensation product of dimethylurea with monoethanolamine, alkylphenyl ether of polyethylene glycol and hydroquinone are additionally introduced into the emulsion (No. 98231321 / 04; IPC S10M 173/00).

A known method of producing emulsol for machining by emulsification of oil with oleic acid, triethanolamine and a composition of dimethyldithiocarbinate, sodium with triethanolamine, and then water are produced in the emulsion with stirring (Application No. 98100944/04, IPC С10М 173/00).

The closest is the method of producing emulsol for the lubrication of metal forms in the manufacture of concrete and reinforced concrete products, which consists in mixing petroleum oils with salts of higher fatty acids and a reagent (see, RU 2210496 C1, 08.20.2003).

Both the proposed and known methods for producing emulsol for lubricating metal forms in the manufacture of concrete and reinforced concrete products consist in mixing petroleum oils with salts of higher fatty acids and a reagent.

The closest is emulsol for the lubrication of metal forms in the manufacture of concrete and reinforced concrete products, containing a petroleum oil component, a stabilizer and water, which contains atmospheric gas oil with a boiling range of 290-350 ° C and optionally C20-C24 or bottoms of synthetic fatty acids in the following ratio of components, wt.%: atmospheric gas oil with a boiling range of 290-350 ° C 8.0-10.0, stabilizer 0.3-0.5, synthetic fatty acids C20-C24 or bottoms of synthetic fatty acids 0.7-1.5; water - the rest (see, RU 2210496 C1, 08.20.2003).

A disadvantage of the known emulsols and methods for their preparation is multicomponent and, accordingly, more complicated preparation technology and non-universality of the choice of oil components of the lubricant.

To increase the efficiency of unloading concrete and reinforced concrete products from metal forms, a method was proposed for producing emulsol used for lubricating metal forms in the manufacture of concrete and reinforced concrete products, which consists in mixing petroleum oils with salts of higher fatty acids and a reagent. Used petroleum oils are used and potassium hydroxide is used as a reagent in the following ratio of components, wt.%:

Petroleum oils used 96-98

Salts of higher fatty acids 1-2

Potassium hydroxide 1-2,

the resulting composition is heated to a temperature of 100-250 ° C with constant stirring for 2 hours, then sediment for 72 hours and the supernatant is decanted - the specified emulsol.

Emulsol for the lubrication of metal forms in the manufacture of concrete and reinforced concrete products is obtained as described.

A common feature with the prototype in the composition of emulsol is the presence of petroleum oils and fatty acids. A new sign is the introduction of potassium hydroxide 1-2%, which leads to the saponification of organic components and the sedimentation of inorganic impurities.

The selected ratio of components provides optimal properties of the resulting product.

When the content of waste oils is less than 96%, a significant increase in viscosity and the formation of a precipitate in the form of potassium salts of organic acids occur; when the content of oils is more than 98%, the process of deposition of organic impurities and saponification is not complete.

The content of salts of fatty acids selected 1-2%, because at this concentration, the solubility of organic acids is maximum.

A common feature of the method for producing emulsol is the mixing of petroleum oils with reagents.

The heating temperature of the composition was selected to 100-250 ° C, since in this temperature range the maximum reaction rate is provided.

Constant stirring for 2 hours ensures uniform distribution of the reacting components of the mixture in the reaction space.

The settling time (72 hours) ensures the complete precipitation of inorganic impurities.

Supernatant - Emulsol is decanted for use. Inorganic impurities precipitate and must be disposed of.

An example implementation.

To prepare emulsol, the composition was taken:

Waste Oils 96%

Fatty Acid Salts 2%

Potassium hydroxide 2%,

mixed and heated for 2 hours to a temperature of 150 ° C with constant stirring in the device "Steel enameled apparatus (229.671.00.00 IE)", factory manufacturer "Red October".

A mixture of sodium salts of stearic and palmitic acids was used as fatty acid salts.

Then, for 72 hours, the supernatant, emulsol, was settled and decanted.

The use of the resulting emulsol provides better separation

reinforced concrete and concrete products in the manufacture.

Claims (2)

1. A method of producing emulsol for the lubrication of metal forms in the manufacture of concrete and reinforced concrete products, which consists in mixing petroleum oils with salts of higher fatty acids and a reagent, characterized in that used petroleum oils are used and as a reagent potassium hydroxide in the following ratio of components, wt .%:
Petroleum oils used 96-98 Salts of Higher Fatty Acids 1-2 Potassium hydroxide 1-2
the resulting composition is heated to a temperature of 100-250 ° C with constant stirring for 2 hours, then sediment for 72 hours and the supernatant is decanted - the specified emulsol. 2. Emulsol for the lubrication of metal forms in the manufacture of concrete and reinforced concrete products, obtained by the method according to claim 1.