SU1498529A1 - Contact device - Google Patents

Abstract

The invention relates to the design of apparatus for heat and mass transfer, can be used to carry out absorption, distillation and other separation processes in systems gas (vapor) - liquid and allows to increase the efficiency of mass transfer by reducing the splash splash. The contact device comprises a housing, a fluid supply unit, a web on which coaxially installed constant height rings with slotted notches are interconnected by radial inclined blades installed in the annular spaces at an angle opposite to the angle of inclination of the blades in the adjacent inter annular space. The coaxial rings are arranged so that each smaller ring is displaced down to the same and smaller ring height, the lower parts of the rings are made solid, and the upper ring is provided with an upwardly extending conical shell that is mounted on the upper ring with a clearance relative to the body. 2 Il.

Description

The invention relates to the design of apparatus for heat and mass transfer and can be used in the chemical and related industries for carrying out absorption, rectification and other separation processes in gas (vapor) - liquid systems.

The purpose of the invention is to increase the efficiency of mass transfer by reducing the splash point

1 shows a contact device; figure 2 - node I in figure 1 (the element of the ring with slotted. notches).

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The contact device comprises a web 1 on which coaxially mounted rings 2 are attached.

with slotted notches 3 mounted between each other by radially inclined blades 4 mounted in inter-ring spaces at an angle opposite to the angle of inclination of the blades in the adjacent inter-ring space. A knot is attached to the canvas.

5 liquid supply in the form of a U-shaped tube, one end of which is fixed in the web 1, and the other end

6 is located in the center of the contact device, plugged from above and provided with openings 7 on the side surface. The blade 1 is rigidly fixed to the housing 8 of the apparatus. The upper end of the outer ring is connected to the smaller base of the conical net 9, which expands upwards, and is larger

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the base of which is installed with a gap relative to the housing 8. The web 1 is provided with a drip tube 10, the upper end of which protrudes above the web 1, and the lower end is located above the web of the underlying contact device

The device works as follows.

The gas flow enters the lower part of the device and is distributed in the annular spaces, and the irrigating liquid from the overlying contact device is fed to the canvas 1, from where it passes through the node 5 to the liquid supply to the center of the contact device.

In the field of centrifugal forces swirling by inclined blades 4 of the gas flow, liquid droplets are thrown onto the inner walls of rings 2 "Here the liquid droplets form a film which, moving along the ring along the ascending helix, penetrates through the slotted notches 3 located in the upper part the rings 2, in the adjacent interring space, acquire an anti-fire direction of motion, fill its volume, are thrown against the walls of the next ring, etc. On the whole, due to the sharp quenching of the gas velocity, after passing the inclined blades, a suspended gas-liquid layer is formed in the volume of the device, in which heat-mass-exchange processes intensively occur.

Liquid thrown to the walls of the housing 8 through the notches 3, located

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rings collected in the volume between the blade 1 and the conical mesh shell 9, which helps to reduce the splash guards on the overlying step and damping the foam. In this case, part of the liquid enters the center of the contact device through the fluid supply unit 5, and part of the liquid through the inflowing tube 10 is fed to the fabric of the underlying contact device, reduces splash resistance, and repeated contact of the liquid with the gas flow contributes to a more complete saturation of the liquid absorbed by the components.

Claims (1)

Claims of the Invention A contact device comprising a housing, a fluid supply unit, a web on which coaxially mounted constant height rings with slotted notches are located, interconnected by radial inclined blades mounted In the annular spaces at an angle opposite to the angle of inclination of the blades in the adjacent inter annular space , characterized in that, in order to increase the efficiency of mass transfer by reducing the spatter ratio, the coaxial rings are arranged so that each smaller the ring is displaced downward by the same and smaller height of the ring distance, while the lower parts of the rings are made solid, and the upper ring is provided with a conical mesh sheath, which extends upwards, with a clearance relative to the housing. 9 8 F