SU1018696A1 - Method of automatic control of gas cleaning process in electric filter - Google Patents

Abstract

METHOD AVTOMATICHESKSLHZ UPRAoLE Nia PROCESS GAS The whistle aPOKTR01 1LTRE by regu lvrovani voltage on units with Vita audio korrek1gaey temperature ,: chemical composition of pacxofiy n | vshaemogo gas of t h and h and w and soup with Teff that, | with depyo Depending on the computing voltage of the ectrophiptic regulator, depending on the computational voltage and current, the pit agitator is connected; The bridge is gender to the jumenato tension.

Description

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D O5 Ionization relates to methods for controlling the purification process of industrial gases and can be used in industries that use electrostatic precipitators. There is a known method of automatic treatment of gas purification processes in the electroplating process by regupping the supply of the reagent dp to the photocatalyzing depending on the averaged value of the phase angle of occurrence of the electric. Discharges in the electrostatic precipitator corresponding to the current level of specific electrical resistance of the battery 1 C. The disadvantage of this method is that it does not provide for the regulation of the voltage of the electrostatic supply units, as a result of which the required degree of gas purification is not achieved. The closest to the invention in its technical essence and the achieved result is a method of automatically controlling the process of gas purification in an electrofilter by regulating the voltage on power units with correction for temperature, chemical composition and flow rate of the gas to be purified. 23 The disadvantage of this method is that it does not provides the required degree of purification of gases and the reliability of the process equipment of the electropholes, since the formation of the control signal is carried out at the moment or arcing that Nb "Jet koronirurschih lead to breakage of the electrodes and to the loss of A1 m ergii audio .razr these rows. Breaks of the corona electrodes in the field of an electrostatic precipitator reduce the efficiency and degree of gas purification and in many cases lead to a downtime of electrostatic precipitators. The aim of the invention is to increase. . degree of gas purification. The goal is achieved by the fact that according to the method of automatic sending the gas purification process in & r by adjusting the voltage on the units with temperature correction, the chemical part to the flow rate of the gas to be purified, the supply voltage of the electrostatic filters is adjusted depending on the current calculated and The power supply units of the magnitude of the sensitivity of the conductivity of the field to voltage variation. FIG. Figure 1 shows a plot of conductivity p versus voltage U, drink an electrostatic precipitator (where p is defined as the reciprocal of the electrical resistance to the resistance of the electrode gap); on ijmr. 2 is a block diagram of a system for automatically controlling a gas purification process in an electrostatic precipitator implementing this method. The method of automatic control is carried out as follows. The dusty gas stream through the inlet 1 from the metallurgical units, such as furnaces and converters, enters the electrostatic precipitator 2. Temperature sensors 3, chemical composition 4, such as gas sulfur concentration and flow rate 5 of the gas to be purified, measure the characteristics of the input gas stream. Further, the gas passes successively located floor 6 cleaning. The main variable characterizing the process of gas purification in the electrical system 2 is the value of the sensing voltage and the conductivity of the field by voltage, i.e. The ratio of the conductivity increment Gyulr to the increment of the voltage TO (Fig. 1), which is determined in the first B1 1 numerical block 7 formula:.; ,: where 5p is the conductivity sensitivity. The calculation is performed after TUDY on the power supply unit 8 from the control unit 9 and the first unit 10 of the task of the test control action (the key 11 is at the same time in the singing position). The divider 12 is supplied with the values of current and voltage measured at the power supply units 8. The first computational signal 7 comes from the power supply unit 8, the pop voltage value, and the divider is 12-value conduction field. The conductivity sensitivity value of the field determines the area where the electric mode is at a given time. The larger the value of the conduction sensitivity of the field, the closer the electric mode is to the breakdown zone (this can be seen from Fig. 1, where: LR-L p. 0). -, -2 In the second computational unit 13, at this control cycle, the total voltage is determined. The control action is inversely proportional to the value of the sensitivity of the conduction of the field in the current oment of time.

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Claims (1)

METHOD FOR AUTOMATIC CONTROL OF THE GAS CLEANING PROCESS IN THE ELECTRIC FILTER by regulating the voltage on the power supply units with correction for temperature, chemical composition and flow rate of the gas to be cleaned, with h and h with that; that, with the circuit increasing the degree of gas purification, {the voltage of the electrostatic precipitators is regulated depending on the sensitivity of the wire calculated by the current and voltage of the power supply units ”-: field voltage to voltage variation. S- 00 about 1 1018696