екстрагування

The results of the research of extraction of oil from the none-crushed and crushed sunflower seeds of different fractions by the method of extraction are presented. The mechanism of extraction and process kinetics is investigated. It has been shown that the process of extracting oil from sunflower seeds is complex and consists of both intra-diffusion and external-diffusion transfer of oil. It is stated that the process is similar to the extraction of the target components from the seeds of most types of plant raw materials.

The article is devoted to the process of extraction of oil from rapeseed and sunflower seeds and meal by an extraction method based on the study of the kinetic regularities of the process.

The study of the extraction process of the target components contained in the layer of grain material is presented. The process concerns the dissolution of solids from the outer surface of the solids and the extraction of the dissolved material from the layer of inert grain material in the stationary layer.

Досліджено механізм та кінетику екстрагування олії з насіння рослинної сировини органічними розчинниками для різних розмірів зерна. Розглянуто та встановлено найбільш вигідні умови процесу екстрагування цільових компонентів з рослинної сировини.

Досліджено вплив ступеня подрібнення сировини на кінетику процесу екстрагування. Встановлено оптимальні умови проведення процесу екстрагування олії. Встановлено межі протікання процесів екстрагування та розчинення цільових компонентів з пористих структур рослинної сировини, які визначають швидкість всього процесу.

In this article the new technological process of complete processing of solution Stebnik’s tailings on the basis a complex experimental researches, which involves the use of standard equipment, is developed. It enables to get two conditioned products (sodium chloride and bishofit) and potassium-magnesium fertilizer. The cyclic using of organic extractant in the process enables dramatically reduce material costs of processing tailings solution and provides ecological completeness of the process.

In this paper the possibility of obtaining almost non-chloride products with the help of the experimental studies of selective extraction of sodium and potassium chlorides from intermediate product of processing solutions tailings potash industries - sediment of potassium-magnesium salts with a high chloride content (over 25 %) using aqueous organic extractant (acetone, methanol, ethanol) was proved. It is shown that to achieve a high yield of product the extraction process should be carried out in 40% aqueous acetone.

In this paper the results of experimental studies of the extraction process of chlorides from the production schoenite that contains more than 15 wt. % Cl-, with using 20 ... 50 % aqueous solutions of isopropyl alcohol are given. It is shown that the realization of extraction in 30 % extractant in ratio between solid and liquid phases  that is equal 3, makes it possible to obtain a precipitate, which after dehydration contains on the dry weight (wt.

In this paper the experimental results of extraction magnesium chloride from solid intermediate product of processing of solution Stebnik's tailings with using 87.4...89.5 % aqueous solutions of isopropyl alcohol in the mass ratio between the solid and liquid phases 1:2.0...5.0 and the distillation of isopropyl alcohol with obtained solutions are presented. It is shown that the necessary conditions for obtaining of conditioned bischofite are the content in extractant 89.5 wt. % of isopropyl alcohol and the weight ratio between the solid and liquid phases that is equal 1:3,0...1:3.5.

The results of comparative studies of the chloride extraction from a mixture of sulfate salts of chloride by aqueous and organic extractants based on ethanol, isopropanol and acetone are given. It was found that the most effective reagent for obtaining chlorine free product is ethanol. 
Наведені  результати  порівняльних  досліджень  екстрагування  хлоридів  із  суміші сульфатно-хлоридних  солей  водно-органічними  екстрагентами  на  основі  етанолу, ізопропанолу  та  ацетону.  З'ясовано,  що  найефективнішим  реагентом  для  одержання безхлоридного продукту є етанол.