SU577222A1 - Method of continuous extraction of vegetable oils and device for effecting same - Google Patents

Description

3

Nozzles 17-20 are located tangentially to: onyam at an angle of 15-20 to their irodol axis.

In the extraction column 3 (see Fig. 1 and 2) in the installation of the nozzles 17g

an extraction zone 1 is formed, and in the places where the nozzles 18 are installed — zone II; in the boot KOJiOHhie (see Fig. 1 and 3), zones I1 and 2O are formed at the installation locations, respectively, zones I1J and P. | 0

In column 3, a screw 21 with perforated turns is mounted, and in the areas between the pipes, the screw is made with a reduced step of turns 22 and 23, and the turns 24, directly at the outlet 15 of the connections, are formed with individual plates and are made with an increased step. The remaining 12) e turns 25 of the screw 21 are made with normal pitch.

The same auger 26 mounted in a column 20 is turns with reduced pitch marked pos. 27 and 28, the turns formed by the individual plates - pos. 29, and the turns with normal pitch - pos. thirty.

The way in which the described device 25 works is as follows.

Flow through the material 5 through the decanter 2 enters the loading column 1 and the turns 25 of the screw 21 is transported to the zone. Inside this and the rest of the three zones, a cycle of collecting and recycling the miscella is carried out. On the border between the recycling nodice of the miscella and its intake for a new recycled stock, a compaction is created for the continuously moving extractable material by squeezing it, created by a modified screw pitch. The coils 24 and 29 contribute to the loosening of the material and to its intentional non-mixing.

Micelle, taken through the pipes 9 and 10, passes through the heaters 14, 15, 16 and is fed into the extraction zones through the pipes 17-2. In order to give it rotational motion relative to the longitudinal axes of the column in any direction, the recirculation 45 miscella is fed tangentially, as a result of which the contact time of the extractant for recoverable oil decreases as the flow turbulence increases.

The inclination of the feeding pipes to the columns of the columns 50 against the main direction of movement — the miscella also contributes to the gurbulization of the toe.

The set of miscella at the end of the recirculation zone, and the nodacha at the beginning, defined the beginning and end of the zone along the movement of the main flow of the mis-5 cella (started when the miscella enters the zone), provides countercurrent movement (against the current of the main miscella) selected for miscella This leads to the fact that the contact time of a disputable misiela 60

increases in proportion to the degree of recirculation, i.e., the number of times the passage; the circulated miscella through the section. recirculation zone.

Both of these techniques — vishtelleg — chg. Lowering the miscella and recycling prigien. ”. DM are aimed at increasing the contact time of the extractant to increase its use.

In the proposed method, certain hydrodynamic, concentration, and thermal regimes are maintained in the recirculation areas or in the extractor zones, which vary stepwise from one zone to another. These modes are equalized within each zone due to intense turbulence. Due to the fact that during the transition from the zone to the zone along the extractant, the concentration in the zones is increased stepwise, it is possible to maintain recirculation steps and higher temperatures.

An increase in temperature up to boiling in the zones (except for the zones at the beginning and end of the extractor), in turn, leads to a certain concentration. The physical limits to the increase in concentration are almost 1% oil, and the temperature is the boiling point of miscella in the corresponding zone.

The temperature regime up to the boiling point in the Operil X zones, which gradually increases in the course of the movement of the extractant, starts from 55-65 ° С at the beginning and 75-85 С at. the output of the miscell extractor, ensures the achievement of the maximum concentration. TtsMHepaTyp intervals depend on the type of extractant. . Increasing the temperature of the upper limit leads to a deterioration in quality, and a decrease in it leads to a decrease in the concentration of the target.

For countercurrent, stepless immersion extraction methods, it is not possible to create a stepped temperature regime.

In the proposed method, such a regime is created by organizing recycling zones.

The table shows the data obtained when using extraction gasoline brand B in the presence of four zones.

If in all zones to keep the temperature 70s, the concentration at the exit will decrease to 38-40%. If we reduce the number of zones and go to countercurrent, then the concentration of the outgoing miscella will decrease to 30%.

The return material (meal) comes out through the nozzle 6, miscella through the nozzle,

Table

Claims (2)

Claims 1. A method for the continuous assembly of vegetable oils when countering the edematous movement of the oil-containing material and solvent and heating and recirculation of the miscella over zones, characterized in that ;; In order to intensify the process, the miscella in each zone is fed tangentially to the flow of solvent at an angle of 15-20 to it, while the temperature is gradually increased from 55-65 ° C in the first zone to 75 in the last. 2. An apparatus for carrying out the method of continuous extraction of vegetable oils according to claim 1, comprising loading and extraction columns with patra & 45 31 14 input and output of solvent, miscella and oil-containing material and transporting augers, characterized in that the nozzles for entering the mnscell are arranged tangentially to the columns at an angle of 15-20 to their longitudinal axis, and the screws in the areas between the nozzles are made with a reduced step of the turns, and the coils located directly at the outlet of the nozzles, formed by separate plates. Sources of information taken into account in the examination: 1. Copyright certificate № 142723, cl. С 11 В 1 / 1О, 1961. Featured PacmSofumeati Exists hell / hell / pony no3avu rtyyartz / c ig. 2 Solvent 21 22 25 15420 ° VopcuHHu conditionally jerked 2J Stroke / o / J Mo / neflvofa 17/18) Solvent Estructible material , 5-20 VopcuHt a conditionally pulled apart  Growing and / „eating flc / crnSopumejit,