SU144155A1 - Extraction Apparatus - Google Patents

Description

The known constructions of the extraction apparatus are made in the form of vertically mounted columns equipped with agitators. The residence time of the dispersed phase in the working zone of such aids is determined by the ratio of the height of this zone to the speed of incidence of particles and is almost always very small. In the proposed apparatus, the contact time of the phases and the residence of the dispersed phase in the working area depends only on the flow rate of the flows into the apparatus, which is a cylindrical housing mounted horizontally, in which there are agitators and partitions with a slot on the common shaft. A distinctive feature of the proposed apparatus is that, in order to enable the control of the residence time of the working fluids in the state of intensive contact, necessary, for example, for their chemical interaction, it is equipped with agitators located on a common axial shaft rotated from an external drive, and for greater efficiency, these devices are placed on the river one above the other.

The essence of the proposed apparatus design is illustrated in the drawing.

Ma FIG. 1 is a schematic diagram of the apparatus; in fig. 2 shows the extraction step; in fig. 3 - agitators; in fig. 4 - partitions; in fig. 5 is a diagram of the location of the apparatuses.

Each extraction step (Fig. 2) consists of a mixing (a) and settling (b) chambers. In the mixing zones bounded by partitions 1, there are placed agitators 2 fixed on a common horizontal shaft 3. The mixers have silt blades that provide only radial movement and which do not transport the liquid phases. The mixing zones are separated from each other by settling chambers, which include flat channels formed by partitions 1 4, 1 separation volume between partitions. The partitions 1 have symmetrical sections, while the partitions have 4 sections at the top and

No. 1441552 - various below (fig. 4). At the exit from the mixing chamber, a mixture of light and heavy liquid phases passes through flat channels between the Mie partition wall 1 and 4. These channels, in the direction of movement of the light liquid phase, are bounded by a partition wall 4 located so that the small gap is at the top. In the direction of movement of the heavy liquid phase, the walls are positioned so that the small gap is at the bottom. This ensures that the main streams of liquid phases to the right of the mixing chamber pass downwards and to the left of it upwards. In flat channels, an enlarged droplet zone is created. After these channels, enlarged droplets, bypassing the partitions 4, enter the separation volume of the settling zone. If it is necessary to increase the required number of stages, it is possible to use several devices located one above the other and connected in series (Fig. 5).

Subject invention

Claims (2)

1. A liquid-liquid extraction system with countercurrent feeds for fresh liquids and outlets for waste liquids, in a horizontal casing of which partitions with slots are placed, characterized in that, in order to enable the residence time of the working liquids to be in an intense state. contact, for example, for their chemical interaction, it is equipped with baffles located on a common axial shaft, driven in rotation from an external drive. 2. Extraction aggregate of horizontal apparatuses connected in series between themselves, in accordance with claim 1, characterized in that, in order to achieve the desired efficiency without the aid of pumping devices, these apparatuses are placed one above the other. - Mixed phases - Easy phase Tizhelpr phase Ltd ° 0 ° oh oh Ltd ° 0 ° h, h2