SU1395903A1 - Chimney - Google Patents

Abstract

The aim of the invention is to increase the efficiency of flue gas cleaning. Hot flue gases, rising along the gas discharge trunk 1, expand sharply in cavity 2, forming toroidal vortices. In this case, the gas impurities are charged in the corona discharge plumes, which appear on the teeth of the corona-forming electrodes 3, made in the form of radially dispersed blades, and are simultaneously thrown to the walls of the cavity 2, cooled by compressed air, coming from the side holes 7 non corona electrodes 4, made in the form of radially spaced hollow blades, the cavities of which are connected to a source of compressed air. In cavity 2, charged particles of impurities swirl, coagulate and precipitate into dust collector 6. Brushes 10, rotated under the action of elevation, of hot air, sweep away dust from electrodes 3, 4. 1 Cpf-ly , 5 il.

Description

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The invention relates to devices that purify industrial emissions into the atmosphere, and can be used in all areas where there is a need to clean the iibicoKOCKOpocTHbix gas streams in the ducts from the boiler rooms.

The purpose of the invention is to increase the efficiency of flue gas cleaning. FIG. 1 given the device, a general view; hia FIG. 2 is a section A-A in FIG. one; in fig. 3 is a section BB in FIG. one; in fig. 4 shows brushes; in fig. 5 is a section B according to FIG. four-.

The tube contains a gas outlet pipe Styol 1, in the upper part of which there is a cavity 2, in which there are cores and noncorona electrodes 3 and 4 mounted on sleeve 5, dust collector 6, a high voltage source and a source of compressed air ( not shown). Electrodes 3 and 4 are installed as follows.

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Cooled and cooled through the openings 7, cooled air enters the gas exhausting trunk 1. Smoke fumes with gaseous and solid impurities due to natural or forced thrust rise up the trunk 1 and, reaching the cavity 2, drastically expands at the same time, they are speeding up and forming toroidal vortices in cavity 2. At the same time, the flue gas flow is ionized in the corona discharge plume directed towards the flow, and at the same time pressed to the cavity walls by cooled compressed air flow coming from the openings 7 of the blades of the non-corona electrodes 4. In the cavity 2, the charged particles of impurities swirl, coagulating as a result interacting with each other, with air ions and water droplets formed by the interaction of hot flue gas and cooled compressed air.

zom. that overlap the cross section of the cavity 2. Non-20 Enlarged, coagulated particles of the corona electrodes 4 are placed per-impurities of the flue gas are thrown to

along the motion of the gas and

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along the motion of the gas and are represented by a hollow blade, radially fixed on the hub 5. On one of the side; the out surfaces of the electrodes 4 are made; holes 7. Cavities of the blades are non-coronary; electrode 4 is communicated with a source of compressed air through a pipe I wire 8. Corona electrodes 3 are placed over non corona electrodes I 4 and are sawtooth radially fixed on sleeve 5 which are tooth facing the non-corrosive electrodes 4. Corona and non-corona electrodes 3 and 4 are connected I, respectively, to the negative and positive poles of the high voltage source. In order to remove dust from electrodes 3 and 4 on the sleeve 5, brushes 10 made of dielectric material are rotatably mounted diametrically arranged. The brushes 10 are provided with fins 11 to allow the rotation of the 40 brushes under the effect of a rising hot flue gas. One of the brushes is facing the electrode 3, and the other is facing the electrode 4. The dust collector 6 is mounted around the flue 1 under the cavity 2.

The device works as follows. A high voltage source (10 kV) is turned on, and a corona discharge occurs between electrodes 3 and 4 from the teeth of the corona electrode 3. Simultaneously,

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the cavity walls and roll into the dust collector 6. In addition, the hot flue gas, rising up, drives the brushes 10, which, rotating, sweep the dust from the electrodes 3 and 4, which ensures the stability of the corona discharge and intensive ionization of the flow .

Claims (2)

1. A smoke pipe containing a gas exhaust trunk with corona and non corona electrodes placed inside it, characterized in that, in order to increase the flue gas cleaning efficiency, in the upper part of the chimney there is a cavity in which the electrodes are radially placed on the common bushing blades that overlap the cavity section, the blades of non-corona electrodes are made hollow with holes on the side surfaces and connected to a source of compressed air, and the blades of the corona electrodes are made sawtooth with teeth directed toward the blades of noncoring electrodes, with diametrically placed between the electrodes with the possibility of rotation. dielectric brushes, one of which faces the corona electrodes, and the other toward noncoroning. 2. A pipe according to claim 1, characterized in that. The source of compressed air and compressed air, which is equipped with a dust collector, is placed along the pipeline 8 into the blades of the non-absorbing electrode 4, which is sharply expanded around the exhaust pipe under the cavity. 0 five Cooled and cooled through the openings 7, cooled air enters the gas exhausting trunk 1. Smoke fumes with gaseous and solid impurities due to natural or forced thrust rise up the trunk 1 and, reaching the cavity 2, drastically expands at the same time, they are speeding up and forming toroidal vortices in cavity 2. At the same time, the flue gas flow is ionized in the corona discharge plume directed towards the flow, and at the same time pressed to the cavity walls by cooled compressed air flow coming from the openings 7 of the blades of the non-corona electrodes 4. In the cavity 2, the charged particles of impurities swirl, coagulating as a result interacting with each other, with air ions and water droplets formed by the interaction of hot flue gas and cooled compressed air. 0 Enlarged, coagulated particles of flue gas impurities are thrown to five 0 0 five five the cavity walls and roll into the dust collector 6. In addition, the hot flue gas, rising up, drives the brushes 10, which, rotating, sweep the dust from the electrodes 3 and 4, which ensures the stability of the corona discharge and intensive ionization of the flow . Invention Formula 1. A smoke pipe containing a gas exhaust trunk with corona and non corona electrodes placed inside it, characterized in that, in order to increase the flue gas cleaning efficiency, in the upper part of the chimney there is a cavity in which the electrodes are radially placed on the common bushing blades that overlap the cavity section, the blades of non-corona electrodes are made hollow with holes on the side surfaces and connected to a source of compressed air, and the blades of the corona electrodes are made sawtooth with teeth directed toward the blades of noncoring electrodes, with diametrically placed between the electrodes with the possibility of rotation. dielectric brushes, one of which faces the corona electrodes, and the other toward noncoroning. 2. A pipe according to claim 1, characterized in that.  that it is equipped with a dust collector, around the gas vent under the cavity. 4-I 2. 5-6 Fig.Z P