SU386639A1 - Rotary mass-exchanging column - Google Patents

Description

one

The invention relates to apparatus for carrying out mass transfer processes of chemical technology, especially for vacuum distillation.

The known rotary mass-exchange column for gas (vapor) -liquid systems, comprising a housing with a rotor inside it consisting of spiral stages, and between them, transfer devices in the form of an annular pocket with a tray located under it. One end of the tray is connected to the body of the column, and the other is located above the perforated glass. However, the overflow device of such a column does not provide continuous turbulization of the liquid film that irrigates the inner surface of the spiral of the stage.

In order to intensify the mass transfer in the proposed column, the tray is divided by partitions into parallel channels of different lengths, feeding the liquid to different points of the cross section of the spiral stage.

With this arrangement of the overflow device, continuous drobbing of the liquid film flowing along the inner surface of the Archimedean spiral is provided by falling drops, which leads to an intensification of mass exchange in the column.

FIG. 1 shows the proposed column, a longitudinal section; in fig. 2 - section A-A of FIG. one.

The column contains a vertical cylindrical body 1 with internal annular pockets 2 and a rotor consisting of spirals 3 fixed on the shaft 4 by means of bushings 5. On the wall of the body 1, a tray 6 is fixed associated with the hatch cover 7. The tray is divided by longitudinal partitions 8 into parallel channels 9 of various lengths. The free and open ends of these

The channels are located above the helix 3 at various points in the cross section of the column.

The opposite ends of the channels 9 are in communication with the annular pocket 2 lying above, through the holes in the bottom of the pocket (one hole for each channel) .;

The vapor moves in the column from the bottom up, the passage in the gaps between the coils of the spirals 3 and is in contact with the liquid irrigating the inner surface of the spirals. The liquid moves in the column from top to bottom and passes successively through the annular pockets 2, trays 6 and spirals 3. The feature of the proposed column is that the liquid from the pocket 2 through a series of holes and drains on the tray below the stream (but one stream for each channel 9). From the channels, the liquid flows in separate streams onto the rotating spiral 3, is caught by the spiral, then, under the action of centrifugal removal, flows along the inner first surface of the spindle from the center to the periphery of the column. From the rotating coil, the liquid is dropped onto the wall of the cornea 1 and flows into the annular pocket below.

Claims (1)

Invention Formula A rotary mass exchange column for gas (vapor) -liquid systems, comprising a housing with a rotor inside it consisting of spiral stages, and an overflow device placed in between them in the form of an annular pocket with a tray of trays, characterized by the fact that simulating mass transfer, the tray is divided by partitions into parallel channels of different lengths, feeding the liquid to different points of the ion section of the spiral stage.