SU526365A1 - Mass transfer apparatus - Google Patents

Description

one

The invention relates to mass transfer apparatus designs and can be used in mass transfer processes for gas (vapor) to liquid systems.

Known masloobmennaya apparatus, including the body, partitioned perforated plates, contact elements installed on the plates, overflow devices in the form of pipes with bump stops and drain pockets placed on the periphery of the plates 1-2.

A mass transfer apparatus is known, comprising a body partitioned by a container 1 kami consisting of two horizontal perforated webs, on the lower of which are mounted contact elements passing through openings in the upper canvases, overflow devices in the form of pipes with baffles, and drain pockets placed along the periphery the lower canvases in which the lower ends of the pipes are located, forming hydraulic seals 3J.

A common drawback of the known devices is the high gas velocity and the splash guards, which significantly reduces the mass transfer between the phases.

In order to intensify mass transfer and improve the flow of fluid from one plate to another, horizontal perforated partitions are installed in the contact terminals of the proposed apparatus, forming channels with the lower plates, and the edges of the upper sheets are bent upwards from the side of the strikers and downwards from the pockets, and also nozzles are installed in the center of the contact elements, passing through horizontal perforated partitions and fixed on the lower canvases, and the drain pockets are provided with nozzles that are coaxially placed bubbled inside the tubes.

FIG. 1 shows a mass transfer apparatus, a longitudinal section; in fig. 2 - contact element with a partial cut.

The mass transfer apparatus consists of a body 1, sectioned with plates consisting of two horizontal perforated webs 2 and 3, on the webs 2 contact elements 4 are installed, passing through holes in the top webs 3, overflow ycTpoiicTB in the form of pipes 5 with strips 6, and drain pockets / located along the periphery of the lower webs 2, into which the lower ends of the pipes 5 enter, forming hydraulic locks.

In the contact elements 4, horizontal perforated partitions 8 are installed, forming with the lower webs 2 channels 9 for the passage of fluid, and in the center of e.ements 4 nozzles 10 are installed, passing through the partitions 8 and fortified by webs 2.

Edge 1 and 12 of the upper canvases 3, respectively, are tilted upwards from the side of the bump stops 6 and down from the side of the pockets 7.

Drain pockets 7 are equipped with nozzles 13, coaxially placed inside the pipe 5.

The main gas flow from the underlying plate enters the contact elements 4 of the overlying plate, then, after contacting with the liquid, the gas in the form of a gas-liquid 3 multicyce enters the upper sheet 3, where the phases are separated. The gas separated from the liquid enters the next plate.

On each plate, a part of the gas flow is directed to the nozzle 13 of the overflow device, at the upper cut of which the gas injects liquid from the annular gap formed by the pipe 13 and pipe 5. Then, moving the liquid with the liquid in the form of a gas-liquid emulsion, flows into space above the overlying plate. The liquid from the upper web 3 of the underlying plate is drained into the drain pocket 7, from where it passes through the gap between the nozzle 13 and the pipe 5 to the upper edge of the nozzle 13, where the gas is injected with liquid. The emulsion formed with it moves upwards along the pipe 5. Then, having separated from the gas, the liquid through the overflow threshold 14 enters the cavity between the sheets 2 and 3, where it is evenly distributed between the contact elements 4 in which the phases contact. From the contact elementon 4, the liquid in the mixture with the gas enters the upper sheet 3, where the phases are separated. From the top of the plate, the liquid flows into the pocket 7.

The contacting of the phases in the contact element 4 is as follows.

The gas under each contact element 4 is divided into two streams, one of which, the worker enters the nozzle 10, and the other, the passage through the partition 8, forms a gas-liquid emulsion with the liquid on it, which moves in the gap

between the nozzle 10 and the wall of the element 4, flows to the upper section of the nozzle 10, where the emulsion is injected by the working gas stream. In the contact element 4, the liquid enters the channels 9. Fall on the partition 8, the liquid is in contact with the gas phase, thus forming a gas-liquid emulsion with it.

Claims (3)

1. Mass transfer apparatus comprising a body partitioned with plates consisting of two horizontal perforated cloths, on the lower of which are mounted contact elements passing through holes in the upper canvases, overflow devices in the form of pipes with bump stops, and drain pockets placed along the periphery the lower canvases in which the lower ends of the pipes are located that form hydraulic seals, characterized in that, in order to intensify mass transfer and improve the flow of liquid from one plate to another, in contact electrons The horizontal perforated partitions are installed, forming channels with the lower blades, and the edges of the upper blades are bent upwards from the side of the bump stops and downwards - from the pockets. 2. A mass transfer apparatus according to claim 1, characterized in that nozzles are installed in the center of the contact elements, passing through horizontal perforated partitions and fixed on the lower canvases. 3. A mass transfer apparatus according to claim 1, characterized in that the drain pockets are provided with nozzles coaxially placed inside the pipes. Sources of information taken into account in the examination of the invention: 1.Avt. St. No. 255189, cl. B 01D 3/20, 1968. 2. Avt. St. No. 210085, cl. B 01D 3/32, 1966. 3. The patent of Germany no. 1084696, cl. 12 a, 5, 1960 (prototype). 2 -five - ( -t2 2} 3 f t r