SU1212490A1 - Electric wave filter - Google Patents

Description

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The invention is applied to apparatus for trapping solid or liquid particles from gas applied in different industries (heat and power, cement industry, petrochemistry, etc.) -.

The aim of the invention is to increase the efficiency of gas purification by continuously indicating the degree of their purification.

Figure 1 presents the electrostatic precipitated view in the plan; Fig. 2 shows the installation of an isolated plate in a precipitating electrode, section A-A, and Fig. 3 shows an electrical circuit of the electrostatic precipitator.

The electrostatic precipitator consists of body 1, precipitating 2 and corona 3 electrodes, input 4 and output 5 gas ducts. The inlet and outlet of the electrostatic precipitator in the cutout of the collecting electrodes 2 are installed with a gap of plate 6, which are fixed with insulating plates 7, made, for example, of fluoroplastic or asbestos cement and rivets 8. Plate 6 with the help of current leads 9 are connected to ratiometric frames device 10.

The high-voltage transformers 11 and 12 are connected via rectifiers 13 and 14, respectively, to the corona electrodes 3 of the first and last electrostatic precipitator floors.

The insulated areas 6 of the collecting electrodes 2 of the first field are grounded through one frame of the ratiometric device 10 and the adjusting resistor 15, and the last floor is grounded through the | Second frame of the ratiometric device 10 and the adjusting resistor 16

To eliminate overvoltages, for example, with a break in the instrument frame, dischargers 17 and 18 are provided.

The electrostatic precipitator is operated as follows. .

Dusty gas enters the inlet of the electrostatic precipitator. Concentration, end of each gender -.

whether ZI at the entrance to the electrostatic precipitator is maximum. Therefore, the locking of the corona current I is also maximum. Consequently, the amount of current in the first along the gas flow of the isolated section 6 of the precipitation electrode 2 is reduced by an amount proportional to the dust content at the entrance to the electrostatic precipitator Z. At the output of the electrostatic precipitator (floor), the amount of dust Zg is less. The degree of blocking current 1 is also less. The currents 1, and Ig, fed to the frames of the logo meter 10, give a value of 1, proportional to /. Thus, on the scale of a ratiometric instrument, calibrated accordingly, we obtain a value proportional to the degree of purification h of gases in an electrostatic precipitator. (Field)

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All changes in the technological parameters of the electrostatic precipitator, leading to a change in the amount of dust on the input or output of the electrostatic precipitator, are recorded due to a change in the corona current.

The readings of the ratiometric instrument 10 are adjusted according to the results of the primary dust-gas measurements by changing the value of the resistors 15 and 16.

One of the important advantages of the invention is the possibility of carrying out continuous monitoring of the magnitude of the degree of purification of gas in the KdK eletrofilter using switch instruments and with the help of chart recorders. During operation of an electrostatic precipitator equipped with the proposed indicators, it is possible to promptly change the parameters of the technological process in order to ensure the maximum degree of gas purification.

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Claims (2)

) 1. ELECTROFILTER, consisting of a housing, precipitation and corona electrodes, forming several electric fields, inlet and outlet ducts, hoppers and high voltage sources, characterized in that, in order to increase the efficiency of gas purification by continuously indicating the degree of purification, one or more sedimentation electrodes made by cutouts, the planes of which are equipped with plas'tins mounted on insulators, grounded through the framework of geometric instruments, and installed. us at the beginning and end of the electrostatic precipitator. Figure 1 1212490 ' 2. The electrostatic precipitator according to claim 1, about l and - are installed in the electrodes at the beginning and characterized in that the plates ^ at the end of each field ·.