SU1127635A1 - Electrostatic precipitator - Google Patents

Abstract

ELECTROFILTER, comprising a housing with inlet and OUTLET4 nozzles and cells consisting of lamellar non-corona and needle H 2 corona electrodes, and additional collecting electrodes,; ./ non-corona electrodes are provided with chains of metal rings rigidly attached to them, each of which is mounted coaxially with the opposite needle of the corona-forming electrode, while the crowns The driving electrodes of neighboring cells are mirrored, and additional collecting electrodes are installed in the outlet nozzle. . 1/8/6 5769 FIG. one

Description

The invention relates to the purification of gases from dust and can be used in agriculture, metallurgy and other branches of the national economy.

A known electrostatic precipitator includes a housing made of an insulating material with needle-like discharge electrodes installed in it, the needles of which are arranged in two groups displaced relative to each other in the longitudinal direction, and lamellar collecting electrodes l,

The disadvantage of this electrostatic precipitator is its low effect due to the deposition of dust on plate electrodes and the formation of the reverse corona.

An electrostatic precipitator is also known, comprising a case of insulating material with cells placed in it, each of which consists of two parallel plate-type collecting electrodes and a discharge electrode made in the form of thin needle-like rods, equally distant from the plate electrodes; collecting electrodes 2.

The disadvantage of the device is low efficiency in connection with a decrease in the ionizing ability of the corona discharge during electrotreatment.

The purpose of the invention is to increase the efficiency of dust collection by increasing the ionizing ability of the corona discharge.

The goal is achieved by the fact that in an electrostatic precipitator containing a case with output and inlet nozzles, cells consisting of platelets of non-coronating and needle corona electrodes, and additional collecting electrodes, non-corona electrodes are provided with chains of metal rings fixed to them with the opposite needle of the corona electrode, the corona electrodes of the neighboring cells are mirrored, and additional collecting electrodes are installed in outlet pipe.

.In FIG. 1 shows the proposed electrostatic precipitator, a general view; in fig. 2 corona bottom cell, side view.

The electrostatic precipitator includes a housing 1 with inlet and outlet nozzles 2 and 3, corona-shaped cells 4 consisting of corona needle needles 5 and non-corona electrodes made in the form of metal plates 6 and chains of metal rings 7 fixed to them, each of which is installed coaxially with the opposite needle of the corona electrode 5, 5, the corona electrodes of the neighboring cells are mirrored, and the additional precipitation plate electrodes 8 are arranged in parallel rows in Khodnev

0 pipe 3.

. The electrostatic precipitator works as follows.

High DC voltages, negative polarities are applied to the corona electrodes 5, positive polarities to the non corona electrodes 6 and 7, and additional discharge electrodes 8 to the corona discharge electrodes.

In this way, a corona discharge occurs between the corona needle electrodes; 5 and chains of metal rings 6, resulting in jets of electric wind from each needle. In the corona-discharge cells 4, these jets of electric wind are directed towards each other, creating a braking effect in the intercellular space with the saturation of this zone with an increased ion content. As a result, intense air impurities are charged and they are deposited onto metal plates. B. Then. the air flow enters the next pair of oppositely directed corona-discharge cells 4, where the next portion of dust is deposited.

When the purified air enters the last crown cell

0 in front of the outlet nozzle 3, the electric wind from the corona needles creates a high-speed air flow and undecided dust particles receive an electric charge. Then the flow

5 air enters the space where additional precipitation electrodes 8 are installed, on which finely divided dust is deposited.

P Thus, the air is cleaned from both large dust particles and the smallest ones. Electrostatic forces and inertia forces contribute to the deposition of dust of various dispersity.

The electrostatic precipitator allows you to clean the air to the content of impurities in the air of 0.1-0.2 mg / m. In addition, it is possible to adjust the concentration of ozone and oxygen ions to comfortable values. It is also possible to use a device for neutralizing air impurities harmful to the human body (ammonia, tobacco smoke, paint odor, hydrogen sulfide

5 and others.). In comparison with the basic device — a domestic air conditioner of the type BK-1500, the proposed electric filter is notable for its simplicity of manufacture, low power consumption and much lower cost. The main characteristics of the electric filter are given in the table. Consumed power, VT80 + 10 Supply voltage, V 220 Nominal frequency of the supply voltage, Hz50 Continued table Cost per unit, rub. Mass, kg Capacity, m3 / h 400 + 50 Overall dimensions, mm length width height collection efficiency,%

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Claims (1)

ELECTROFILTER containing a housing with inlet and outlet nozzles of cells consisting of plate non-corona and needle corona electrodes and additional precipitation electrodes, G: characterized in that, in order to increase the efficiency of dust collection by increasing the ionizing ability of the corona discharge, the non-corona electrodes are equipped with rigidly attached to them by chains of metal rings, each of which is installed coaxially with the opposite needle of the corona electrode, while The electrodes of neighboring cells are oriented mirror-like, and additional precipitation electrodes are installed in the outlet pipe. G 3 e bm 00 joint venture>