SU921588A1 - Heat mass exchange plate - Google Patents

Description

(54) HEAT AND MASS EXCHANGE PLATE

one

The invention relates to a device for heat and mass transfer apparatus and can be used in the chemical, oil refining and other industries.

A known heat and mass transfer plate, made in the form of horizontal parallel tubes with the formation of a gap between them for the passage of gas and liquid network 1.

Their main drawback is the uneven distribution of phases on the plate and a narrow range of stable operation.

The closest technical solution is a heat and mass transfer plate made in the form of two rows of horizontal mutually overlapping gaps for the passage of gas tubes and fortified in vertical partitions 2.

However, the maximum allowable gas velocity for this plate is low. With an increase in velocity, a pulsation of the liquid occurs and an increase in entrainment increases, which leads to a decrease in the efficiency of mass transfer.

The purpose of the invention is to intensify the mass transfer on the plate by reducing inter-tray entrainment.

This goal is achieved by the fact that in a plate made in the form of two rows of horizontal tubes fixed in partitions, the partitions in the upper part are provided with triangular petals, bent in 5 directions in opposite directions.

FIG. I shows a plate, a longitudinal section; FIP 2 - section A-A in FIG. one.

The plate is fixed in the housing 1. It is made in the form of two horizontal bars.

Claims (2)

 parallel tubes 2, between which gaps are formed for the passage of gas and liquid. The gaps between the tubes 2 of the lower row and the overlapped tubes 2 of the overlying row. Tubes 2 are mounted in a vertical 5 partition walls 3, which are divided from plate to row of sections. The upper part of the partitions 3 is cut at an angle from two sides from the periphery to the center. On either side of the notch, triangular petals 4 are formed. To create a directional circulation of the bone within each section, the petals 4 of each partition 3 are bent in opposite directions. Partitions 3 are installed on the support ring 5 attached to the body of the apparatus 1. The plate operates in countercurrent mode. Liquid is served from above. By suppressing the gas supplied from below, above the tubes 2 a layer of liquid accumulates, the height of which increases with increasing gas velocity. At the same time, a large number of droplets are released from the liquid layer. The liquid and drops, striking the bent petals 4, change the direction of movement and move at an angle to the plane of the dish. Between the partitions 3, a directed circulation of fluid is created. When striking petals 4 and partitions 3, separation and renewal of the interfacial surface of the contact occurs. The liquid in contact with the gas falls through the gaps between the tubes 2 and drains to the underlying plate, and the gas goes up. The implementation of partitions with edges bent in different directions allows to intensify the mass exchange due to the directional circulation of the fluid and reduce its entrainment, as well as expand the range of stable operation of the dish. The invention is a heat and mass transfer plate, including, and horizontal tubes located at a distance from each other and in a staggered order in height, reinforced in vertical partitions, with an ogugicha / oy so that in order to intensify mass exchange due to the directed circulation of fluid and reduction of entrainment, the partitions in the upper part are provided with triangular lobes, bent in opposite directions. Sources of information taken into account during the examination 1. USSR author's certificate No. 627334, cl. B 01 D 3/22, 1978. 2. USSR author's certificate number 286957, cl. B 01 D 3/18, 1970.