SU1031479A1 - Apparatus for heat mass exchange - Google Patents

Abstract

1. THE DEVICE FOR HEAT AND MASS TRANSFER, including a housing with branch pipes for output and output of phases, a vertical venturi tube, a cyclone and a spray gun with filtering steps, distinguishes 1 X-to-J; -; This is due to the fact that, in order to reduce metal consumption and reduce the aerodynamic discharge pressure of a gas, the vertical Venturi tube is installed coaxially inside the xpfus and the sleep & . 2. The apparatus according to claim 1, about t li and h aa-y and so that the optimum angle of opening a1f {1 array of radial Venturi tubes is 6-8.

Description

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This invention relates to apparatus for cpr carrying out processes of heat and mass transfer, in particular for measuring the gaseous compounds with absorbing liquid. The latter include, for example, the absorption of sulfuric anhydride and embedded in the gas-air mixture with sulfuric acid, the absorption of carbon from the diluted sulfuric acid by dried or heated gases.

A device for heat and mass transfer, an inlet housing with nozzles for input and output of phases, a vertical Venturi tube, a cyclone and a breather with filtering stages Tl 3 are known.

The main disadvantage of this device is a significant deviation of the main geometrical parameters of a horizontal Venturi tube (diffuser opening angle, expansion ratio, diffuser length) from their optimum value due to accepted design solutions in the chain, which leads to a significant increase in aerodynamic resistance of this unit node .

Along with this other disadvantage of this apparatus, which ultimately leads to the axial drag of the absorber as a whole, is an accepted variant of carrying out the absorption on a nozzle of Raschig rings, placed in a second vertical chamber, in which the gas and abdominal gas liquid flow countercurrent. The latter circumstance determines a significant sprinkling fluid reaching 250 mg / nm even with the use of a perfect irrigation device design (plates with separate gas flow and irrigating liquid).

The purpose of the invention is to reduce the material permeability and reduce the loss of aerodynamic pressure of the gas.

The goal is achieved by the fact that in the apparatus for heat and mass transfer, including; a casing with inlet and outlet nozzles, a vertical Venturi pipe, a cyclone and a drip tray with filtering stages, a vertical Venturi pipe installed coaxially inside the casing and provided with radially installed horizontal Venturi pipes in the lower part, the diffusers of which are connected to the cyclone and the filter stages of a blown out roll .

It is advisable that the slope angle of the diffuser of the radial venturi be equal to 6-8.

FIG. 1 dan proposes a device, a longitudinal section; in fig. 2 shows section A-A in FIG. Ij in FIG. 3 shows a section BB in FIG. one; in fig. 4 shows a section B-B in FIG. 2

The apparatus is a housing 1 provided with a gas inlet 2 and a side gas outlet 3 a.p. In the lower part of the housing 1 there is a fitting 4 for taking the absorbent liquid out of the apparatus. The vertical venturi 5 has its own irrigation system 6, consisting of a collector and nozzles. The vertical venturi 5 in its lower part forms a chamber 7 designed to collect irrigating fluid supplied to irrigate both the vertical venturi 5 and horizontal venturi 8, and for this the first cyclone level of the sprayer 9 in the lower part with the flow channels 1O with - camera 7.

The horizontal pipes of Venturi 8 (in Fig. 3, there are four of them, but maybe a different number) are located in housing 1 radially below the gas outlet from the vertical Venturi pipe 5 in the form of a chamber

7i have their own 11 irrigation system. Venturi horizontal tube diffusers

8 arches with the first cyclone stage of the spatula 9, with two cyclones operating in parallel after each horizontal Venturi tube 8. Above the cyclones are placed vertically mounted candles 12 of the second filter stage of the sprayer.

The device works as follows.

The gas-air mixture, containing the components subject to absorption, flows through the fitting 2 into the vertical pipe of the Ventilation 5, where it is processed by the absorbing liquid fed through the irrigation system 6. The absorbing liquid is crushed by the gas flow, and i forms a fine liquid phase having a developed contact surface. The latter significantly contributes to an increase in the rate of heat and mass transfer processes. Having passed the diffuser of the vertical Venturi tube, the gas-air mixture is directed into the horizontal tubes of the Veneguri 8, at the same time the absorbing liquid is deposited by the chamber 7 under the action of inertial bridges. The horizontal venturi pipes 8 are irrigated with absorbing fluid flowing through the irrigation system 11. The same physical and chemical processes occur in the horizontal venturi pipes as in the vertical venturi pipe, as a result of which the overall absorption rate increases significantly. The exit from {(the effusions of each horizontal Venturi tube 8, the gas flow is divided into two parts and enters the first inclined step of the spray head 9). In cyclones, the lower part is separated from the total amount of splashes by the absorber of the liquid. Since Shashea absorbed liquid flows down the walls cyclone in the form of a film, and the gas, the passage of the cyclone, makes several revolutions in the same direction:., with the condition for holding the film absorber G with a constant amount of unabsorbed Ruzyme component The gas and air mixture is cleared of splashes with a fraction of more than 10 microns and is fed into the vertical spark plugs 12 of the second filtering stage of the spray cell. Made of polypropylene or fluoroplastic mat mats, the filter 1O 79 gas is cleaned from the residual amount of the fine spray fractions (less than 1O micron). spray gas, the gas exits the apparatus through unit 2. The proposed constructive implementation of the absorber reduces the value of the total loss of aerodynamic resistance in, and thereby reducing the pressure drop raeoJ & oa- air mixture in it. In the end, the latter leads to a significant reduction in energy consumption in the installation, in which it is possible to use this --J-- moreover, it reduces the following: - - - THX - the device's material consumption after the SG "" "" exclusion of supporting structures "- The unimportant advantages of the proposed apparatus are its compactness, ease of maintenance, and repair and restoration work. The total annual economic effect is approximately 25 thousand rubles. .

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Claims (2)

1. APPARATUS FOR HEAT AND MASS TRANSFER, comprising a housing with faa inlet and outlet pipes, a vertical venturi, a cyclone and a spray booster with filtering steps, characterized in that, in order to reduce the metal consumption and reduce the loss of aerodynamic gas pressure, the vertical venturi is installed coaxially inside casing and is equipped in the lower part of the rati> but with installed horizontal venturi tubes, the diffusers of which are connected to the cyclone and filter stages of the trap. 2. The apparatus by π. 1, due to the fact that the optimal opening angle of the venturi diffuser for radial tubes is 6-8 f 1031479 1