SU1414428A1 - Apparatus for cleaning gases - Google Patents

Abstract

The invention relates to a technique for cleaning process gases from dust in various sectors of the industry and improves the efficiency of gas cleaning from fine dust and reduces energy costs. The device includes a housing 1 with an outlet nozzle 2, partially filled with a Tbto liquid, a Venturi pipe 4 with a water supply pipe 9, the open upper end of which is brought under the liquid level, a pipe 10 for supplying compressed air and drip pads 13, 14. The Venturi pipe 4 is installed vertically with bottom supply cleaned gas and equipped with supersonic nozzles 5 connected to the pipeline 10 dp of compressed air supply. The Venturi tube divides the body into two compartments 6 and 7, filled with clean and dirty water, and the water supply pipe 9 is located in the clean compartment 6. I Cp f-ly, 2 ill. cl

Description

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The invention of hydromechanical purification of process gases from dummies and various harmful substances is possible in the field of rexiiHKe and can be used in ferrous metallurgy, chemical and other industrial sectors that require the purification of gases from solid, liquid and gaseous harmful substances.

The aim of the invention is to increase the efficiency of gas cleaning from fine spray and reduce energy consumption.

Figure 1 shows the device, a general view; Fig. 2 shows a nozzle for supplying, dispersing and accelerating the irrigation liquid with compressed air.

The device includes a housing 1, partially filled with liquid, with an outlet nozzle 2 for exhaust gases, an inlet nozzle 3 and a Venturi pipe 4, in the confusor of which one or several supersonic gas-liquid nozzles 5 are installed. The entrance part of the Venturi pipe is below the liquid level, and exit - above its surface. The venturi divides the device case into two compartments 6 and 7 with clean and dirty water, respectively. In the lower part of the housing 1 there is a hydraulic lock 8 or another device for removing sludge. In the feed pipe 9 and the pipe 10, water and compressed air are respectively supplied to the nozzle. The flow of compressed air and water is regulated by valves 11 and 12. The drift eliminator is made in the form of flat plates - drop gutters 13 and 14. The first gutter separator 13 along the gas, is equipped with a profiled vane 15, installed with the possibility of vertical movement. The blade 15, together with the submerged lower blade, forms a slot channel 16 in the form of an impeller. Feed water is supplied to compartment 6 with clean water through conduit 17. Compartments 6 and 7 communicate via conduit 18 located below the liquid level.

The device works as follows.

The gas to be cleaned is fed through the inlet 3 to the Venturi tube 4, where the dust particles contained in the gas are coagulated with high-speed dispersed liquid.

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5. Splitting and acceleration of liquid: they occur in a supersonic nozzle due to the energy of compressed air. In the venturi tube diffuser, the gas flow velocity is reduced, the enlargement of the droplets occurs and they are released into the interior of the device. Liquid is supplied to the nozzle from the clean water compartment 6 through pipe 9 by gravity due to the hydrostatic pressure of WATER in the device case.

Liquid droplets containing dust particles ejected from the venturi tube partially settle on the internal walls of the device. The remaining part of the droplets is trapped in the slit channel 16 formed by the vanes 15 and on the flat droplet separator 14. The purified gas is released into the atmosphere through the outlet 2.

The deposited dust particles are deposited in the compartment 7 with hazardous water, from where they are periodically removed through the hydraulic drain 8. The liquid losses in the device due to evaporation and waste with sludge are replenished through the pipeline 17. The pipeline 18 is separated from the compartment 7 13 racks 6, from where it is fed into the nozzle.

Placing the Venturi tube vertically with a lower gas inlet allows the hydrostatic pressure of the fluid in the housing to be used to overcome the back pressure in the diffuser of the supersonic nozzle at the point of injection of fluid into the nozzle, as well as to reduce the size of the apparatus. The presence of supersonic nozzles allows the use of compressed air energy to produce a fine liquid plume with droplets of 20-80 µm in size. In addition, dividing the case into two compartments allows for the deposition of dust particles captured by the liquid only in compartment 7, and the water supply from compartment 6 with pure water.

The presence of an adjustable blade 15 on the drip tray 13 maintains the optimum speed and, consequently, the efficiency of the process in a wide range of gas productivity.

Claims (2)

1. Gas cleaning device including a housing with outlet and inlet nozzles, partially filled with liquid, a Venturi tube, a water supply pipe installed in the housing, the open end of which is placed under the liquid level, a pipe for supplying compressed air, inclined and vertical drip trap, In order to increase the efficiency of gas purification from fine dust and reduce energy consumption, the casing is divided into two sections by a Venturi tube installed vertically and equipped with supersonic nozzles connected to the pipeline for supplying compressed air and hydrogen 0111ey pipe at This inlet is located at the bottom of the Venturi tube, the outlet is in one of the compartments, and the intake end of the water supply pipe is in a friend. 2. The device according to claim 1, characterized in that, for the purpose of to increase the cleaning efficiency, it is equipped with a slit channel in the form of an impeller, placed under a vertical droplet separator, while the vertical dropping separator is equipped with a profiled blade, installed with the possibility of vertical movement. Compressed Airs Rig 2 Approach Editor O. Yurkovetska Compiled by O. Bekker Tehred L. Oliyink Order 3807/5 Circulation 6A2 VNIIGTI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Water edge Proofreader V.Romanenko Subscription