RU191105U1 - Electromechanical dust suppression device - Google Patents

Abstract

The utility model relates to electromechanical installations and, in particular, to installations of electron-ion technology, can be used in the metallurgical, cement, mining and processing industries, as well as in the production of building materials to suppress dust emissions in the area of the source of dust formation, during loading The technical task of the proposed device is to increase the efficiency of suppression of dust emissions to protect various technological objects from dust , while reducing power consumption and overall dimensions of the device. The technical problem is achieved due to the fact that the electromechanical device for suppressing dust emissions contains a corona electrode consisting of a number of metal plates bent at an angle located at an equal distance from each other and parallel to the precipitation electrode. This design is very effective due to the fact that there is an increase in the area of the corona electrode, an increase in the residence time of the particle in the zone of the corona electrode, as well as partial mechanical removal of dust emissions. Dust particles entering the interelectrode space adsorb an electric charge and are removed due to Coulomb forces.

Description

 The utility model relates to electromechanical installations and, in particular, to installations of electron-ion technology, can be used in the metallurgical, cement, mining and processing industries, as well as in the production of building materials to suppress dust emissions in the area of the source of dust formation, during loading unloading operations.

Known electrostatic shutter [Patent RU No. 2212279 C1, B03C3 / 08, published September 20, 2003 bull. No. 26]. The design includes a system of flat deposition and wire corona electrodes that create a volumetric electric charge in the interelectrode space. A distinctive feature of the device is that the precipitation electrons have a height equal to twice the distance between them in the lower part, and the corona electrodes are installed at an equal distance between them, with the lower one at a height of half the distance between the lower edges of the precipitation electrodes, and each successive one a corona electrode with a step equal to half the distance between the lower edges of the precipitation electrodes. The electric field created in the interelectrode space, in this case, has a component parallel to the axis of symmetry of the device, which ensures the direction of movement of dust particles not only to the side plates, but also in the direction of the return of the particles to the source of dusting.

The disadvantage of this device is that for its effective operation over a long distance, it is necessary to increase the dimensions of the flat electrodes, as well as the length and number of corona electrodes, which will lead to an increase in the power of the power source, additional energy consumption, an increase in the size of the structure, and, accordingly, material consumption.

Known design [Patent RU No. 2343985 C1, B03C3 / 06, published January 20, 2009 bull. No. 2], consisting of a system of precipitation and corona electrodes. Sedimentation electrodes are blocks, the front wall of which is made of mesh, the side and upper ribs are made of non-magnetic material, and the rear one is made of ferromagnetic material, the lower edge is missing, which is necessary for passing dust particles into the dust collecting bin. Precipitation electrodes are installed in parallel. In the interval between the precipitation electrodes, a corona electrode is placed, which is a system of needle electrodes, and a semicircular element is placed that connects the precipitation electrodes, which is made of a grid.

However, this device, due to insufficient space of a small cross-section for the passage of cleaned air, requires the installation of an additional system of pressurization of air in the system.

The closest technical solution is an electromechanical device for suppressing dust emissions [Patent RU No. 180753, IPC B03C 3/09, publ. 06/22/2018], including precipitation electrodes and a corona electrode, consisting of individual needle elements lying in the plane of symmetry of the device and equally distributed along the length of the interelectrode space, characterized in that it further comprises a metal plate oriented perpendicular to the plane of symmetry and fixed in height above the interelectrode space on the supporting part of the corona electrode.

The disadvantage of this device is the insufficient area of the corona electrodes and the short residence time of the particles in the zone of the corona electrode.

The technical task of the proposed device is to increase the efficiency of the suppression of dust emissions to protect against dust of various technological objects, while reducing energy consumption and overall dimensions of the device.

The technical problem is achieved due to the fact that the electromechanical device for suppressing dust emissions contains a corona electrode, consisting of a series of bent at an angle of metal plates located at an equal distance from each other and parallel to the precipitation electrode. This design is very effective due to the fact that there is an increase in the area of the corona electrode, an increase in the time spent by the particle in the zone of the corona electrode, as well as partial mechanical removal of dust emissions. Dust particles entering the interelectrode space adsorb an electric charge and are removed due to Coulomb forces.

In FIG. The scheme of an electromechanical device for suppressing dust emissions is presented.

The essence of the utility model is that an electromechanical device for suppressing dust emissions, including a sedimentary 2 electrode connected to the positive pole of a high voltage source and representing a grid of non-magnetic material and a corona electrode connected to the negative pole of a high voltage source located above the symmetry axis of the precipitation an electrode consisting of a series of bent at an angle plates located at an equal distance to each other.

Due to the fact that the corona electrode is made of separate bent at an angle plates connected to the negative electrode of the power source, the volume density of the charge in the interelectrode space increases due to additional streamer flows and thereby reduces the time the dust particles receive the maximum charge, and the time spent by the particles in the region increases corona discharge, and also increases the force acting on the dust particle from the electrostatic field.

The device consists of a corona 1 and a precipitation 2 electrode. The corona 1 electrode connected to the negative pole of the high voltage source (IVN) is made of individual elements in the form of plates bent at an angle 3. Corona 1 electrode is perpendicular to the direction of the dust flow. The increase in the area of the corona electrode 1 allows you to increase time, increase the space charge in the interelectrode space by increasing the surface of the ion source. Precipitation 2 electrode, in turn, is powered by the positive pole of the high voltage source and is a grid of non-magnetic material connected to the positive pole of the high voltage source.

Electromechanical device for suppressing dust emissions is as follows.

A difference in electrical potentials is applied to the settling 2 and corona 1 electrodes in parallel, and a region of volume electric charge is formed around the corona 1 electrode. Dust particles falling into this region become polarized and begin to experience two types of electrostatic forces: one directed towards the corona 1 electrode, and the second directed axially, due to the configuration and arrangement of the electrodes. The predominance of the axial component of electric forces leads to the expulsion of dust particles from the gap between the parallel located precipitating 2 electrodes, which are associated with the positive pole of the high voltage source. Due to the fact that the corona electrode 1 consists of plates 3, the residence time of dust particles in the corona discharge zone increases, which leads to an increase in the efficiency of the shutter.

Thus, the device acquires the function of a shutter located in the path of moving dust streams and blocking their movement with the free exit of purified gas, which prevents the spread of dust and the retention of dust particles in the area of the source of dusting.

Claims (1)

An electromechanical device for suppressing dust emissions, including a precipitation electrode and a corona electrode, consisting of separate plates bent at an angle located above the precipitation electrode and located at an equal distance from each other.

Images