SU762900A1 - Heat-and mass-exchange column - Google Patents

Description

The invention relates to the field of instrumentation of heat and mass transfer processes occurring in the system gas (vapor) liquid.

A heat and mass transfer plate is known, including a base consisting of supporting elements, to which canvases are permanently attached, provided with contact elements for the passage of gas (steam) with overflow devices and sectional partitions (1).

The disadvantages of the famous plate is ^; low efficiency of heat and mass transfer due to local failure of the fluid in the places of its receipt on the plate, as well as the uneven distribution of the liquid flow on the base.

The aim of the invention is to improve the · -efficiency of heat and mass transfer due to the exclusion of local failure of the liquid and the elimination of the unevenness of the liquid flow due to its redistribution.

This goal is achieved by the fact that the supporting elements are installed under the partitioning partitions and made in the form of a gutter.

2

FIG. 1. shows a longitudinal section of the plate; in fig. 2 - view of the plate in the plan; on .fig. 3, 4, 5, 6 shows, respectively, the cross section of the groove in the form of a part of a rectangle, triangle, trapezium, circle; in fig. 7

₅ is a bottom view of FIG. four.

The plate includes a base 1, consisting of cloths 2, equipped with contact elements 3 for the passage of gas (steam) in the form of (perforation, valves, caps, gaps or a combination thereof, overflow devices 4 10 of circular or rectangular cross-section, having one or more slits 5 for fluid outflow, partitioning partitions 6, overflow bar 7, gutters 8, windows 9, stabilizers 10.

The connection of the webs 2 with the groove 8 of the wasp ' ⁵ is realized through the bending of the edge of the web 11 or through the bending of the edges of the grooves 12, as well as through the plates 13 rigidly attached

to the chute 8.

The plate works as follows.

20 Fluid at base 1

plates, through which the gas (steam) passes to form a two-phase layer, overflows through the drain bar 7 and enters the overflow device 4. The number of slots

762900

in the overflow device 4, as well as its cross-sectional shape is selected based on the load on the fluid and the range of its change.

The swaying of fluid in overflow devices 4 of rectangular section is eliminated by stabilizers 10. _$

Under the action of static pressure, the liquid flows out of the slits 5 in the form of a film that moves in the horizontal direction and interacts with the rising gas (vapor). Having reached the partitioning ..... partitions 6, it flows into the channels 8, in which the liquid is collected, it flows out. . the neighboring overflow devices, in this case there is a redistribution of fluid. flow through the windows 9. The chute 8 eliminates the local failure of the fluid in places, its inflow, and also in it, ¹⁵ quenching of the velocity pressure of 6 jets of fluid flowing down the partitioning partitions. From chute 8, the fluid flows smoothly to the base of the tray, which is positive. but affects the operation of the bubbling zone of the phase contact. . _:

Arrived on the base 1 of the plate, the liquid moves in the direction of the overflow device 4.

Gutters 8 are supporting elements, some are attached to the blade 2 of the base 1 of the plate, and the cross section of the gutters can be in the form of a part of a rectangle, a triangle, a trapezium and a circle.

Claims (1)

Claim A heat and mass transfer plate for carrying out processes occurring in a gas (vapor) —liquid, including base– system. This consists of supporting elements, to which canvases are fixedly attached, Equipped with contact elements for the passage of gas (steam), overflow devices and partitioning walls, characterized in that, in order to increase efficiency. Heat and mass transfer by eliminating the local failure of the liquid and eliminating the unevenness of the liquid flow due to its redistribution, the supporting elements are installed under the partitioning partitions and are designed as a gutter? ··;