SU986471A1 - Heat mass exchange apparatus for processes in gas vapour-liquid system - Google Patents

Description

one .

The invention relates to instrumentation of heat and mass transfer processes occurring in a gas (vapor) -liquid system, such as absorption, rectification, and can be used in the chemical, oil refining, petrochemical and related industries.

A heat and mass transfer apparatus is known, including a housing, the height of which is mounted on the plates, and under them is a gas (steam) distributor, made in the form of a nipple, one end of which is equipped with a flange and located beyond the limits of the housing, and the other is slotted. either cut obliquely pj.

The disadvantage of this apparatus is the uneven distribution of the light phase over its cross section, which reduces the efficiency of the apparatus.

The closest to the proposed apparatus is a heat and mass transfer apparatus, including a housing, the height of which is installed. The foam plates, and below them is a horizontal

 gas device (steam.), made in the form of perforated pipes, combined in the manifold 2.

The disadvantage of such an apparatus is the low phase interaction efficiency due to weak turbulization and short contact time.

The purpose of the invention is an intensification, 5 qi of the process of heat and mass transfer due to an increase in the time-interaction of the phases and the renewal of their contact surface.

Postav.Penna goal is achieved by

20 that in a heat and mass transfer apparatus for processes in the system a gas (vapor) liquid, including a housing, the height of which is installed the plates

with overflow devices, under which a distribution device is installed, made in the form of perforated pipes connected by a collector, each perforated pipe is provided with side walls with baffle-guide plates on their inner surface.

It is advisable to perforate the pipes in a staggered order, each breaker guide plate is zigzag.

FIG. 1 shows a heat-mass-production apparatus, a longitudinal section; in fig. 2 shows section A-A in FIG. 1 (with the three-element distributor); on fi. 3 section bb in fig. one; in fig. f - switchgear element, top view; in FIG. 5, in accordance with B-B in FIG. 4.

Heat mass transfer. The anriapat includes a housing 1 in which the plates 2 are installed with an overflow device consisting of a drain 3 and a receiving k pocket. Under the lower plate 2, a distribution device is installed, made in the form of pipes 5 connected by a manifold 6 connected to the pipe 7 for supplying gas (steam). The pipe 5 is provided with perforations 8 and 9, respectively, in the form of round holes or slits, and side walls 10 are attached to the surface of the pipe 5 and form a groove 12 with the upper part 11 of this pipe. Inside this groove, walls 10 above the perforations 8 and 9 The fender plates 13 and 1 are fixed to the direction of direction. Chutes 12 are connected to pocket 4 without a gap. Pipe 5, the combined collector 6 and provided with walls 10, form a distribution device. The lower part of the housing 1 is provided with a fitting .15 for draining the bottom liquid.

Heat-mass transfer apparatus operates as follows.

The liquid, having passed through contact with steam (gas) on the underlying plate 2, enters the pocket 3, and out of it through the pocket 4 is directed into the troughs 12.

The gas (vapor) enters the distribution device pipes 5, the collector 6 passes and the pipe 7, from where it goes through the perforations 8 or 9 and interacts with the fluid in the grooves 12.

The perforations 8 and 9 in the pipes 5 are arranged in a staggered order and, in combination with the stepped arrangement of the plates 13 and C, allow the liquid flow to be directed by gas (steam) perpendicular to the main direction of movement, due to this the fluid flow moves from one wall 10 to the opposite, as a result of which its path length and phase interaction time increase. When leaving the perforations, 8 or 9 gay (steam), thanks to plate 13, acquires directional motion

and captures a part of the liquid, disperses it, the resulting gas-liquid stream separates on the opposite wall 10 of the chute 12 using plate 14, after which the separated liquid flows under the plate 13, and the process of phase interaction repeats. The movement of the flows in the channel 12 is shown in FIG. .

Gas separated from liquid (vapor)

from the chute 12 enters the contact with the liquid on the plate 2. The liquid is removed from the apparatus through the nozzle 15.

The implementation of the apparatus according to the invention makes it possible to intensify the process of heat and mass transfer by increasing the contact time of the phases and renewing their interaction surface, which makes it possible to increase the selection of bright target distillates during oil refining.

-ft

Claims (3)

Invention Formula 16 Heat and mass transfer apparatus for the processes in the system gas (vapor) -liquid, including a housing, the height of which includes plates with overflow devices; under which a distribution device is installed, made in the form of perforated pipes united by a collector, characterized in that, in order to intensify the process of heat and mass transfer by increasing the time of phase interaction and renewal of the contact surface, each perforated pipe is provided with side walls with fender-guide plates including their surfaces. 2. The apparatus according to claim 1 is also distinguished by the fact that the perforation of the pipes is performed in a checkerboard pattern. 5986i 71 3. Apparatus no p. 1, about tl and h a yu- 1. Stabnikov V.N., Barantsev V.I. tl and also with the fact that each otboyny-Processes and apparatuses of food production plate execute sig- nals. M., Food industry, Zoobraznoy.IS, p. 9 "-98. Sources of information, 5. to the colony into consideration during examination 2. Ibid., p. 222g225. / Y 7 f but J. F1P.1 // j / h F & e.4 .