SU1620474A2 - Contact arrangement for fractionating columns - Google Patents

Abstract

The invention relates to an apatourt design of mass transfer processes in the food industry, namely, contact devices for e-columns, and can be used in the chemical industry. The purpose of the invention is to increase the productivity of the device. overflow system In the zone of the drain pocket 4, the vertical section of overflow pipeline 5 is installed without a gap with an annular partition 3 and is connected to the control and overflow partitions o The tight to the drain pocket 4 is adjacent a deaf zone formed by a continuous section of the base of the device and placed mirror-symmetrically with the overflow pocket relative to the radial axis of the overflow pipe 5. steam breakthrough due to the formation of a uniform level of liquid near the overflow. The contact device provides an increase in level of performance by increasing system capacity overflow yl ,, 3. (/ & GhEO O Ј J Ј 14

Description

1

The invention relates to instrumentation of mass transfer processes in the food industry, namely to the constructive implementation of a contact device for epuration columns, and is in addition to the basic avtosvid No. 1535884

A contact device is known that contains a perforated base with a central receiving pocket fixed to it, vertical annular partitions having baffle elements, an overflow system formed by vertical drain pockets, overflow pipes having horizontal sections, and a valve, and branch pipes, each and which is installed on top of the horizontal section of the overflow pipe and at the end of it, opposite to the connection with the drain pocket, and passes through the and a central receiving pocket and ends at the upper edge of the annular septum.

The purpose of the invention is to increase productivity by increasing the capacity of the overflow system,

Fig. 0-1 shows schematically the structure of a contact device; Fig 2 is a top view of the contact device; on Fig 3 - view of the overflow device in a perspective view of

The contact device for the eduction columns contains a perforated base 1, with a central receiving pocket 2 fixed on it, vertical annular partitions 3, an overflow system consisting of vertical drain pockets 4, overflow pipelines 5, a water seal 6 o Each overflow pipe 5 has a horizontal a section 7 connected to the discharge pocket 4, and a discharge tube 8 mounted at the opposite end of the horizontal section 7 in its upper part, passing through the base of the receiving pocket 2 and annular partition 3 terminating at the upper edge of 3 The drain pocket 4 is formed by a guide reheater 9, a flat overflow partition 10 and a vertical section 11 of the overflow pipe 5. The perforated base 1 has a deaf zone 12 adjacent to the drain pocket from the side

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The opposite flow of the vapor-liquid flow from the side opposite the flow of the vapor-liquid flow to the discharge pocket 4 The upper edge of the flat overflow partition 10 is at the same level as the lower edge of the baffle elements 13 of the ring partition 3 Part of the guide partition 3 is solid.

The contact device works as follows

The fluid coming out of the water seal 6 enters the perforated base 1, where it interacts with the steam flow coming from the bottom of the contact device through the slotted elements, as a result a vapor-liquid emulsion is formed and the mass transfer process is carried out by the bubbler at an upward angle, the vapor gives the liquid part kinetic energy, the vapor-liquid layer comes into rotational movement along the annular partitions 3, acquiring a significant speed, which contributes to the intensification of mass transfer. but with rotational movement, the liquid moves in the radial direction, alternately flowing over the upper edges of the annular partitions 3, while the baffle elements 13 of the annular partitions 3 separate the liquid droplets from the vapor flow. the device area formed by the shell of the apparatus and the outer annular partition 3 in the perforated zone by installing a guide partition 9, the upper edge of which ends at the level of the baffle elements 13, tb at the height at which the liquid from above penetrates into the drain pocket 4 on the inner side of the contact device, a part of the rotating vapor-liquid emulsion flows into the drain pocket through a flat overflow partition 10 Д Another part of the vapor-liquid emulsion smoothly flows around the drain pocket 4 . The presence of a deaf zone 12 eliminates the area of steam breakthrough and maintains a uniform level of the vapor-liquid layer in the perforated annular zone C, Liquid, falling into the drain pocket, gives kinetic rotational energy, twisting in the overflow pipe 5 on its vertical section 11 separating the vapor from the liquid in the vertical section 11 of the overflow pipe 5 "Next, the liquid moves along the horizontal section 7 of the pipeline 5 and enters the central receiving pocket 2 of the lower contact device. The receiving pocket of the underlying contact device is a water seal 6 for an overlying contact device about

Constructive design of the contact device for the ejection columns provides the possibility of increasing their productivity, since the design of the drain pocket ensures the liquid twist on the vertical section of the overflow pipe, which contributes to additional gas degassing of the liquid phase from the steam and thereby increases the throughput of the liquid phase. the placement of the blind zone allows to eliminate vapor leakage areas due to the formation of a uniform liquid level near the overflow

The design of the contact device allows it to operate at high loads on the vapor phase. The decrease in the amount of liquid entrainment in comparison with the known reaches 10-15%.

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Claims (1)

Invention Formula A contact device for epyruction columns according to AVB, No. 1535884, characterized in that, in order to increase productivity by increasing the capacity of the overflow system, it is provided with vertically mounted in the area of each drain pocket with flat guides and overflow partitions, and the vertical section the overflow pipe of each drain pocket in the zone of the latter is installed without a gap between its surface and the surface of the outer annular partition, with each partition guide a is located along the conjugate arcs of the circles of the overflow pipeline and the annular partition and its upper edge is made at the same level as the upper edge of the annular partition; the edge of the baffle elements of the annular partition, and each area of the base of the device adjacent to the drain pocket and located around the radial axis of the pipeline mirror-symmetrically overflow pockets, made solid with the formation of a deaf zone about fzg.2 Pue.j