SU617078A1 - Tubular electric filter for purifying a stream of gas - Google Patents

Description

one

The invention relates to a technique for the electrical cleaning of gases from dust, smoke, fogs and can be used in the metallurgical, chemical, cement industries and in a number of other industries.

A tubular electrostatic precipitator for cleaning the gas flow is known, comprising a housing with inlet and outlet ducts suspended from beams mounted on the housing, collecting electrodes consisting of profiled plates offset from adjacent plates half of the profile, and corona electrodes suspended inside the tubular channels 1.

The disadvantage of such an electrostatic precipitator is the poor detachability of the collecting electrodes, which reduces the cleaning efficiency and operational reliability.

In order to increase cleaning efficiency, reliability in operation and reduce the cost of manufacturing the collecting electrodes, each plate profile is proposed to be made of two separate elements suspended from the beam independently.

FIG. 1 shows the described electrostatic precipitator, a longitudinal section; in fig. 2 shows section A-A in FIG. one.

The proposed electrostatic precipitator consists of a housing 1 with precipitation and corona electrodes 2 and 3 placed inside it. The precipitation electrodes are made up of profiled elements suspended from the node beam 4. All elements of the precipitation electrodes forming the honeycomb structure are the same and their profile is formed by two parallel shelves half of the side of the hexagon in the cross section of the hexagonal channel, and a flat wall between these shelves, which is angled 120 ° to them and equal to the side of the said pole gon. Suspension beams are attached to the middle of the walls of the elements (Fig. 2).

Below, a series of elements mounted on a single suspension beam is fixed, for example, in the agitation beam. The lower part 5 of the housing 1 is a dust collecting bin with a gas flue 6 of dusty gas. The exhaust gas flue 7 of the purified gas is located in the upper part of the housing 1.

The proposed electrostatic precipitator works as follows.

The dusty stream enters through the flue 6 into the hexagonal channels formed by the collecting electrodes 2. Under the action of an electric field and corona discharge, dust is deposited on the collecting electrodes.

The dust deposited on collecting electrodes is rejected by known methods and mechanisms, for example, lifting and dropping suspension beams using a cam mechanism or striking an anvil with a hammer mechanism.

Due to the fact that the electrodes forming the honeycomb structure are divided into elements attached to the suspension beams, the conditions for the most effective action of the shaking pulse separately on each system of elements united by one suspension beam are created.

The proposed design makes it possible to dramatically expand the field of application of collecting honeycomb type electrodes. If earlier such electrodes were used only in electrostatic precipitators with wet dust extraction, then due to the proposed design they can be used in electrostatic precipitators with dry dust removal, which will allow to increase the specific surface deposition by 1.5-1.7 times. The use of the described design in wet electrostatic precipitators will increase their reliability, since grinding away, applied simultaneously with flushing of settled dust from collecting electrodes, will provide more efficient cleaning of collecting electrodes and reduce downtime for cleaning electrostatic filters.

Claims (1)

1. US Patent No. 2443780, cl. 55-118, published. 1948.