SU43102A1 - The method of obtaining paint for wood type "Basica" - Google Patents

Description

The present invention relates to a method for producing paint for a Beitz-type wood from acid waste from the purification of petroleum products.

Processing acidic wastes from refining products by adding water and heating them with live steam, adding to the homogeneous mass to neutralize lime milk, and then chalk until the release of carbon dioxide and settling to separate into three layers is known.

According to the invention, to obtain paint from three layers obtained in the usual manner, a middle layer (black solution) is used, to which caustic soda is added to a slightly alkaline reaction, after which the solution is heated, stirred with hot steam and filtered from the precipitated precipitate. The solution obtained from filtration is a pure aqueous paint solution. To obtain a dry paint, the paint solution is subjected to evaporation in the usual manner in an apparatus of any design, and fire firing is permissible, since the paint can withstand a temperature of 120-140 °. The powder obtained after evaporation is a paint that is not inferior in its qualities to the highest grades of walnut.

Example. To acid-resistant (leaded vessel, having a conical bottom, ending with a discharge valve (151)

This is about acidic garbage in an amount of about V20 of the vessel's capacity. Approximately double the amount of water is added to the charged acid waste, and the mixture is thoroughly mixed and heated with air and direct steam. When the mass is completely homogeneous, lime milk is added to it (with air stirring) until 90-92% of the acid in solution is neutralized, after which neutralization is made with crushed chalk until the selection stops. carbon dioxide. The mixture is then heated with live steam to 100 ° and then stirred with hot steam until the dissolved carbon dioxide is removed. At the end of the mixing, sludge is obtained, and the mixture is divided into three layers: the upper resin layer and oils soluble in carbon disulfide;

The treatment of the middle layer of black solution is carried out in a tank with a conical bottom. In this vat, a small amount of a strong solution of caustic soda (10-15 ° Vy) is added to the black solution until a slightly alkaline reaction is obtained (according to phenolphthalein). Thereafter, the solution is again heated and stirred with live steam to facilitate after as (

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filtering out the precipitated precipitate. After boiling the solution for about 2 hours, it is settled, after which the liquid is filtered, for which purpose you can use a filter of any design. The resulting clear aqueous solution of paint is subjected to evaporation.

The subject matter of the invention.

The method of obtaining paints for wood type Beitsa from acidic waste oil refining after adding to them

heated water, added to the obtained homogeneous mass to neutralize milk of lime, and then chalk until the evolution of carbon dioxide is stopped and settled before being divided into three layers, characterized in that the resulting three layers take an average black solution, to which is added a caustic soda to a weakly alkaline reaction, heated, defend, filtered from the precipitated precipitate and, in order to obtain a dry paint, evaporated.