SU1346662A1 - Method of extracting gossypol from cotton material - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to the oil and fat industry and relates to cotton oils. The aim of the invention is to increase the yield of gossypol and intensify the separation process. This is achieved by the fact that the cotton material, tlein 1st and shredded, is extracted with a hydrocarbon solvent. In the rezul () Tate of this, a suspension is formed, which is treated with a magnetic field of intensity from 5.97-10 to 6.20-10 A / m, and then divided into gossypol containing and protein containing fractions, moreover, the ratio of material to solvent is chosen in the range from 1: 2.75 to 1: 3.0. If seeds are used as the material, then an oil miscella is additionally separated from the suspension. It is also possible to use a trot as a source material. I zp f-ly, 2 tab. i (L: 05 05

Description

Isoktrish otisoschp s to oil - girono lIpo P: IPJLS night And the castels

cotton MLSS L.

The goal of isoprotei is the cultivation of gossypol and the intensification of the separation process,

In the invention, a homogeneous, stable suspension of previously dried-o to 2.0-2.5 fine grinding of the kernel or meal of cotton seeds and extraction gasoline is subjected to treatment with a constant magnetic field. Since the dielectric nocTOHmrnti of dry gossypol glands, Rapna 3.24, n 2.5 times the (1.267) dielectric constant of dry particles of the gel phase of the seed cotton seed, when the magnetic field is applied, there is a directed movement of the gossypol glands in the bottom 1 of the separator where they are output. Almost completely, the raw materials of the unresolved gossicolor stoves are removed from the suspensions while the particles remain hepatic (Suspension composition of the suspension) The latter is separated by rorc; tno, o, iyio and protein containing fractal, hi; - ;; : of the influence of nishischi on a p re a ra t a b i v a e m o t a t a r a r p, g of a selective imprint for a b on a r ay with a th a b b ti m bathe like that ;; throttle, received by reference:: gkstrg. ;; tsiey.,

The uniform TOI-: KU dispersion material is homogeneous: that in the j- -ch medium, the solvent is formed during mixing with M-ratio (m: 1p; p1i (gas (material: thinner1) 1: 2, - 1: 3.0, and a the fractional-anotopic suspension is carried out under the imposition of a magnetic field with a strength of 5.97-10 -h, () - l () L / m.

Example 1 High in soft technological processes (85 ° С, 35–40 min, vacuum - 250–300 MV Hg, Art.) The core is ground in a pin mill: -; up to 100% passage through 0.25 mm with ito and mixed with extraction I1: m with gasoline in a ratio of 1: 3. The formation of homogeneous suspension and extract is carried out by intensive :: crème1it-an in the mixer; meigalki. mixes-l 15-17 about / with. (mesitelt, oppropellant (1i1alka with the ratio of the bottom of 1 pct1 of the danger of e1 to the diameter of the smallest in

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pv mixer 1: 3. The suspension is then passed through an I-shaped separator, which represents a tube with a diameter of 40-50 mm. In the lower part of the i-shaped tube there is a branch pipe fitted with a sluice gate for removal of gossypol glands. In this area, the suspension is exposed to a magnetic field, the gossip glands in suspension move in the direction of the magnetic field lines of the superimposed magnetic field and are removed from the suspension using the above-described pipe through a lock gate, in the gap between the pole tips an adjustable electromagnetic field. The lower part of the U-shaped tube is placed in the gap. The intensity of the electromagnetic field varies from 200 to 3000 E.

At the outlet of the U-shaped tube, the suspension is practically free of gossypol and is separated for separation into phases. The solid phase isolated from the separator has an oil content of 9-11%.

The yield of cotton flour at the optimum intensity of the electromagnetic field is 82-85%, contains,%: oil 1.0; crude protein 57-59; native gossypol 0,010-. 0.018, the yield of the fraction enriched with 1 ossipolum is 12-14% and contains,%: oil 4.0-5.0; crude protein 28-33; native gossypol 3.4-3.8. The yield of extraction is 95-96%.

Example 2. Cotton meal with intact gossypol glands, obtained by direct extraction with repeated irrigation, is dried up to 2.0-2.5% under the same conditions as in example 1, and ground in pin mills to a size not exceeding 0.25 mm and mixed with gasoline extraction in the ratio of 1: 3. In this case, the number of revolutions of the mixer of the mixer is 13-14 rev / sec. The resulting suspension, as in Example 1, is passed through a U-tube, to the bottom of which a magnet is placed} and the field and through a branch pipe equipped with a sluice gate, a gossypol-enriched meal fraction is removed, the Lightweight suspension is centrifuged and cotton flour is extracted and slalboitseitrnronanny miscella.

The yield of cotton flour at the optimum yield of the electromagnetic field is 83-86% with the content of native gossypol of 0.010-0.016 and crude protein 56-58%, and the oil content depends on the oil content of the meal. The gossypol fraction of the meal contains native gossypol 3.3-3.6, and the crude protein 29-34%. The yield of this fraction is 13.5-14.7%.

Data confirming the achievement of the goal, are presented in table. 1 and 2.

As can be seen from the data table. 1, the imposition of an electromagnetic field has a significant effect on the efficiency of removing gossypol glands from a suspension. With the increase in the electromagnetic field, the degree of redistribution of gossypical glands increases. When the field is intense, with an exorbitant value, the magnetic field has an insignificant effect on the redistribution of protein-containing particles and gossypol glands, which explains the high yield of cotton flour, but with a high content of native gossypol 0.274-0.3 17%, bringing the magnetic field strength to to the optimum, relatively complete elimination of gossypol glands from the suspension is achieved with the production of cotton flour containing native gossypol less than 0.02%. The yield of the target fraction in this case is 78-82%. The maximum yield of cotton flour 81-83% with the lower standard content of the native gossypol of 0.010-0.0144% is achieved with an optimal magnetic field strength. A further increase in the magnetic field intensity has a reverse effect on the fractionation efficiency — the yield of the target fraction decreases somewhat.

We investigate. factor - the ratio of the phases of the material: the inhibitor (hydraulic module) varied from 1: 2 to 1: 5. In this interval, with an increase in hydromodule, a decrease in both the yield of cotton flour and the content of native gossypol in it is observed. The minimum hydromodule at which the standard for toxic gossypol of cotton flour is achieved is 1: 3. The results obtained with a hydromodule from 1: 2.75 to 1: 3.0 are close to each other and correspond to the yield of protein flour 81-83% with the content of native gossypol 0,011-0,019%. Further reduction of the concentration of solid particles in the suspension reduces the yield of the target product.

The invention allows to intensify the separation process several times.

In seed treatment in the separation step, an oil miscella is additionally separated from the suspension.

Claims (2)

1. A method for isolating gossypol from a cotton material by wiping, grinding the material and extracting it with a hydrocarbon solvent, followed by separating the resulting suspension into gossypol-containing and protein-containing fractions, characterized in that In order to increase the output of gossypol and intensify the separation process, the suspension is treated with a magnetic field of intensity from 5.9710 to 6.20-10 A / m, and the ratio of material to hydrocarbon solvent is chosen in the range from 1: 2.75 - 1: 3, 0 2. A method according to claim I, characterized in that seeds are used as the starting material, and when separated from the suspension, miscella is additionally separated. Table 1