SU1607955A1 - Tube-coagulator - Google Patents

Abstract

The invention is intended for use in a wet-dusting technique and can be used in the metallurgical, mining and power industries. The goal is to increase the efficiency of dust collection and reduce energy consumption. The coagulator consists of an input channel in which the irrigation system, a confuser with a neck, and a diffuser (D) are located. The axis of symmetry D is a hollow corona electrode in the form of a helixide (G), combining a turbulizer. On the surface F there are holes which play the role of irrigation nozzles with the supply of irrigating liquid directly into the hollow part. 1 hp ff. 1 il.

Description

The invention is intended for use in a dust collection technique and can be used for dedusting air and gases in the energy, metallurgical, and mining industries.

The aim of the invention is to increase the efficiency of dust collection and reduce energy costs.

The drawing shows the structure of the coagulum tube.

The pipe consists of an inlet channel 1 in which the irrigation system 2 is located, a confuser 3, a neck 4, a diffuser 5, the axis of symmetry of which is a device for imparting rotational motion to a gas flow, made in the form of a hollow cone-shaped helicoid 6. On the surface of the helicoid there are holes 7 acting as irrigation nozzles with the supply of irrigating fluid directly into the hollow part through an additional irrigation system 8. The helicoid is connected to the negative pole of a high-voltage power supply 9 and is a corona-forming electrode.

The device works as follows.

With the passage of dusty gas through the inlet channel 1, through the irrigation system 2, confuser 3 and throat 4, there is a sharp drop in pressure and speed of movement (a sudden increase in volume), resulting in condensation on dust particles in the diffuser 5, where a corona electrode is installed, combined with a device for imparting rotational motion to a gas flow and made in the form of a hollow conical helicoid having openings 7 on the surface. In the hollow part of the conical helicoid 6 through an additional system 8 irrigation fluid is supplied. In cone-shaped helicoid 6, turbulization of both coarse and fine particles occurs, which contributes to their coagulation and simultaneous charging of dust particles and air molecules. Once in the field of a corona discharge, the particles are ionized, as a result of which there is a directed movement of charged ions and electrons, i.e. an electric wind

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of a helicoid 6 to the walls of the diffuser 5 at the expense of the holes 7. Along with the charge of the particles, they are simultaneously irrigated along the entire length of the diffuser 5, as well as cleaning the walls of the diffuser 5 from the previously settled slag. Intensive turbulization of the flow directly on the corona electrode contributes to the maximum charge of dust particles by increasing the residence time of the particles in the field of the corona, especially fine dust that is difficult to detect.

Thus, effective cleaning is achieved due to the joint actions of inertial, gravitational, electric and centrifugal forces, as well as due to the intensification of turbulence, an increase in the particle charge time, additional irrigation and design features in execution.

The dust collection efficiency of the proposed device for inlet dust concentration (5-8) g / m for particles (0.6-0.7) µm in size is 99.8%, and 97.6% is known.

The proposed device allows, in comparison with the known, to highly efficiently clean the dusty gas flow and exclude the use of axial electrode groups of the secondary pipe in such a system, thereby significantly reducing the hydraulic resistance and, consequently, energy consumption, metal consumption and operating costs.

Claims (2)

1. A coagulum tube containing an irrigation system, a confuser, a throat, a diffuser, a discharge electrode, a high-voltage power source, a device for imparting a rotational movement to the gas flow, in order to increase efficiency of dust collection and reduction of energy consumption, the device is connected to the negative pole of the power source and made in the form of a hollow cone-shaped helicoid with forming at the same angle as the walls of the diffuser and step 1-3 of the throat diameter, on the surface of which there are through holes in the radial direction to the generatrix at an angle of 6-8 °. 2. A tube-coagulant according to claim 1, characterized in that the floor is partly conical The helicoid is equipped with an additional irrigation system. I : water water