SU1604386A1 - Tubular latticed directed-jet tray - Google Patents

Abstract

The invention relates to the chemical, petrochemical and food industries of the industry, in particular to the instrumentation of heat and mass transfer processes occurring in a gas-liquid system. The purpose of the invention is to intensify the process of phase interaction due to the shock interaction of a gas-liquid jet against the partition. A tubular-lattice-shaped plate includes a base, made in the form of parallel-installed hollow elements connected by manifolds, overflow channels and vertical partitions. New is that the base is made in two Russ with the formation of slots for inclined gas supply, the plates are made with slots with the edges bent downwards for organized discharge of liquid. The lower rus is provided with vertically mounted partitions attached to the tubes on the upper side parallel to the slits for the entrance of gas. At the same time, horizontal plates are installed under each element of the upper tier. 1 hp f-ly, 3 ill.

Description

The invention relates to chemical, petrochemical and food industries, in particular to the instrumentation of heat and mass transfer processes occurring in a gas-liquid system, such as absorption, rectification, cooling and gas cleaning by means of wet dust collection.

The purpose of the invention is to intensify the process due to the shock interaction of the gas-liquid jet against the partition.

“FIG. 1 shows a tubular lattice of a directional plate; figure 2 is the same, top view; on fig.Z - cell plates, axonometrics.

The tubular-lattice tilted plate mounted in the housing 1 consists of a base 2, made in the form of hollow elements 3 parallelly placed in two rushes, spaced apart from each other with the formation of a gap 4. Plates 5 are attached to the hollow elements of the upper rus the formation of slots 6, in which perforations in the form of flakes 7 are made with edges bent down, and vertical partitions 8 are installed above the bottom ruler tubes, the lower end of which is made with notches .9. The second elements 3 are combined into a distributing collector 10 with a pipe 11 for introducing cold and heat carrier and are connected

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with outlet manifold 12 and pipe 13 for removal of the coolant.

The tubular lattice is redirected; the plate works as follows. in the way

Gas (vapor) enters the lower part of the housing 1, and the liquid moves in the upper part and moves in countercurrent. The liquid on the elements 3 flows through the overflow channels of the overlying elements, made in the form of flakes 7 with the edges bent down. The rising gas (vapor), the passage through the projectile 4, interacts with the fluid exiting (ejecting) from the slots b, forming an upward two-phase jet that hits the partition 8. When struck, the surface of the contact surface increases and renews. - for crushing gas bubbles and liquid elements, which intensifies the process of heat and mass transfer. After the impact, the direction of movement of the gas-liquid flow is reversed, which reduces the entrainment of liquid from the tray and allows for an increase in the load on the gas and liquid and reduces the inter-tray distance.

The repeated passage of the liquid over the gap 4, from which the gas exits, allows the gas stream to be mixed with the liquid again, creating an additional increase in the surface of contact between the phases. Then the gas-liquid mixture in the form of foam is directed to the plates 5, where heat and mass transfer is completed, and part of the liquid returns to the process, ejected through the slits 6, and its other part is discharged through the flakes 7 in the form of jets, forming the second zone of contact of the phases. The hollow elements 3 can be supplied with coolant or coolant, which removes heat from the absorption or cools the liquid absorber, for which these elements are combined into manifolds 10 and 12 connected to the inlet 11 and outlet 13 of the refrigerant.

Thus, the plate simultaneously performs three functions: a contact device, a redistributor (sprinkler) of a liquid and a heat exchanger.

Directional insertion into partitions, fluid ejection through slits 6, impact of a gas-liquid jet, uniform and organized discharge of fluid through flakes 7 provide an increase in the homogeneity of the two-phase layer, renewal and development

the contact surface of the phases, which leads to an intensification of the process of heat and mass transfer, this is facilitated by the removal of heat from the absorption.

The economic efficiency of the proposed plate includes a decrease in metal consumption compared to the known dish designs by 15–25% due to an increase in the upper load limit for gas and liquid and a decrease in inter-dish spacing, as well as a decrease in the acid plate by 10–20% due to an increase in heat and mass transfer efficiency . In addition, the design of the tray is simple and can be used to make it.

Used pipes (heat exchangers), which reduces the cost of construction.

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Claims (1)

1. A tubular lattice-shaped plate, comprising a base made in the form of parallel-installed hollow tubular elements connected by manifolds, overflow channels, horizontal plates and vertical partitions, the lower edges of which are cut-out, characterized in that, in order to intensify process due to the shock interaction of the gas-liquid jet on the partition wall, the base is made in two Rus, with this horizontal plates installed under each element of the upper Rus to form slots with lower tusk elements for inclined gas supply, and vertical partitions attached to the lower tube tubes on the upper side, parallel to the slots for gas inlet. 2, the Plate according to claim 1, about tl and h and y and a the fact that the horizontal plates are made with perforations in the form of flakes for draining the liquid with the edges bent down and alternately directed in opposite directions. Jp, iQ. (L) Q, DiQ- (f, 66 2 6 ZFig .Z