Method and device for adjustment of power fed to electrostatic precipitator. RU patent 2509607.

FIELD: process engineering.

SUBSTANCE: invention relates to control over electrostatic filter. Proposed method comprises the steps whereat: algorithm of control over power applied between at least one precipitation electrode 28 and one discharge electrode 26. Note here that said control algorithm includes direct or indirect adjustment of at least one power range VR1, VR2 and that of power linear variation rate RR1, RR2. Process gas temperature T1, T2 is measured to select, when said algorithm includes power range adjustment, the power range VR1, VR2 proceeding from measured temperature T1, T2 while magnitudes VT1, VT2 to upper limit of power ranges VR1, VR2 at high process gas temperature T2 is lower than that at low process gas temperature T1. Power adjustment rate RR1, RR2 is selected proceeding from measured temperatures T1, T2 when said algorithm includes power linear variation adjustment rate. Note here that power adjustment rate RR1, RR2 at high temperature T1 is lower than that at low temperature T2. Algorithm of control over power applied between at least one precipitation electrode 28 and one discharge electrode 26 is used to adjust said power.

EFFECT: longer life.

12 cl, 10 dwg

The technical field to which the invention relates

The present invention relates to a method of controlling the work of the electrostatic precipitator, which functions to remove dust particles from the process gas, and which contains at least one precipitation the electrode and at least one discharge electrode, taking into account the state of technological gas from which removes dust particles.

The present invention additionally refers to the device that controls the operation of the electrostatic precipitator.

Prior art

Combustion fuels such as coal, oil, peat, waste, etc. in waste incineration installation, such as the power plant, which generates hot process gas, and this process gas contains, among other components, dust particles, sometimes referred to ash dust. Dust particles are often removed from the process gas in the electrostatic precipitator, often called electrostatic precipitator (ESP), for example, of the type illustrated in the US patent 4502872.

The incinerator is usually contains a steam boiler in which the warmth of the hot process gas is used to generate steam. Mode of operation of a steam boiler can change over time, depending on the pollution level on heat-exchange surfaces, the type and quantity of supplied fuel, etc. Changing conditions in the steam boiler will cause changes the state of technological gas that leaves the boiler and enters the IRB. In the US patent 4624685 described attempt to account for changes in the state of technological gas under the control of the IRB. It was found that the temperature of the flue gas, which was calculated in accordance with the patent US 4624685, is that higher temperatures will lead to higher volumetric flow rate, and electricity regulate the IRB in accordance with the measured temperature to account for changes of the volume flow of process gas. Therefore, high temperature furnace gas is considered as corresponding to an increased volume for which you want feed increased power on the IRB.

The work of the IRB in accordance with US 4624685 can be successful in the sense that the maximum permissible emissions can be controlled by varying the state of the process gas. However, the electrical effects on the electrical components of the IRB, tends to be very high.

Summary of the invention

The present invention is to provide a way of working electrostatic precipitator the IRB, and by this way the life of the electrostatic precipitator, and, in particular, can increase the service life of its electrical components.

This problem is solved by creating a method of regulation of work of the electrostatic precipitator, which is used for removal of dust from the process gas and which contains at least one collecting electrode and at least one discharge electrode, taking into account the operational state technological gas from which removes dust particles, and the method is characterized in that it includes:

using the control algorithm for the power delivered between at least one collecting electrode and at least one corona-forming electrode and the control algorithm contains direct or indirect control, at least one of the settings - range, capacity and speed linear change of capacity,

measurement of temperature of technological gas

the selection when the control algorithm holds the regulation of the power range and power range is based on measured temperature, the maximum value of the range power at high temperature process gas is lower, than at low temperatures mentioned technological gas

the selection when the control algorithm holds the regulation of speed linear changes power and speed linear changes of power, based on the measured temperature, speed linear change of power at high temperature process gas is lower than at low temperature process gas, and

power regulation applied between at least one collecting electrode and at least one corona-forming electrode, in accordance with the control algorithm.

The advantage of this method is that the regulation of the power delivered between at least one collecting electrode and at least one corona-forming electrode, carried out depending on the temperature of the combustion gases. Thus, at elevated temperatures technological gas power regulation can be implemented in such a way that causes less wear electrical components electrostatic precipitator.

According to one version to the implementation of the present invention, the ratio between the temperature of the process gas and power supplied between at least one collecting electrode and at least one corona-forming electrode used in the range selection capacity and/or speed linear changes of power. The advantage of this variant of the implementation is that the range of capacity and/or speed linear changes of power can be changed more or less continuously as a function of the temperature of technological gas. In some cases, it is preferable to use ratios, which also takes into account the cleaning efficiency electrostatic precipitator.

According to one version to the implementation of the present invention regulation algorithm includes the regulation of speed linear changes of power. The speed linear changes of power often has a significant impact on the frequency of power supply capacity. Thus, the speed linear changes of power with temperature process gas leads to a significant reduction of wear of electrical equipment of the IRB.

According to one version to the implementation of the present invention control algorithm includes regulation as power range and speed linear changes of power. The advantage of this variant of the implementation is that it provides for significant reduction of stress on the electrical equipment of the IRB, in comparison with the method according to art.

According to one version to the implementation of the present invention control algorithm involves the use of at least two different speeds linear changes of power during the same cycle of a linear change of power. One advantage of this option exercise is that it becomes possible to apply more power on the electrostatic precipitator. Is preferred to the original rate of change of capacity of at least two different speeds linear change of power was greater than at least one follow-speed linear changes of power.

According to one version to the implementation of the present invention control algorithm involves the use of at least two different power ranges during the same cycle speed linear changes of power.

An additional objective of the present invention is to provide a device that is designed to regulate the supply electrostatic precipitator so that the service life of the electrostatic precipitator and, in particular, its equipment was upgraded.

This task is solved by means of a device for regulating electrostatic precipitator, which is intended for removal of dust from the process gas and which contains at least one collecting electrode and at least one discharge electrode, taking into account the state process gas from which removes dust particles, and the device is characterized by the fact that contains:

the controller, which is designed to regulate the power delivered between at least one collecting electrode and at least one corona-forming electrode according to the algorithm of management of power supplied between at least one collecting electrode and at least one corona-forming electrode and the control algorithm includes the direct or indirect control, at least one of the parameters: power range and/or speed linear changes of power, the controller provides reception of a signal indicating the temperature of the process gas and selects when the control algorithm holds the regulation of the power range and power range based on the measured temperature, the top the limit of range power at high temperature process gas is lower than at low temperature process gas, and/or chooses when the control algorithm includes regulation speed linear change of capacity, and speed linear changes of power based on the measured temperature, and speed linear change of capacity below at high temperature process gas than at low temperature process gas.

The advantage of this device is that it functions to regulate the power delivered between, at least one collecting electrode and at least one corona-forming electrode such that it causes less wear electrical components electrostatic precipitator.

The remaining tasks and the characteristics of the present invention will become clear from the description and claims.

Brief description of drawings

The invention will be described further on in more detail, with reference to the attached drawings, in which:

Figure 1 depicts a schematic view of the power plant.

Figure 2 depicts a diagram illustrating the efficiency of removal of dust particles by means of a field of an electrostatic precipitator depending on the supplied voltage.

Figure 5 depicts a diagram illustrating the relationship between the temperature of the flue gas and the target voltage.

6 depicts a diagram illustrating the relationship between the flue gas temperature and speed linear voltage change.

7 depicts a diagram illustrating the use of an electrostatic precipitator at low temperature of the combustion gases.

Fig depicts a diagram illustrating the use of an electrostatic precipitator at high temperature furnace gas.

Figure 9 depicts a diagram illustrating the use of an electrostatic precipitator in accordance with the alternative implementation of the present invention.

Figure 10 depicts a diagram illustrating the use of an electrostatic precipitator in accordance with an alternative embodiment of the present invention.

Description of the preferred embodiments of the invention

Figure 1 depicts a schematic view of the power unit 1 at the side view. Power pack 1 contains the boiler with 2 coal furnace. In the boiler with 2 coal furnace coal is burnt in the presence of air with hot process gas in the form of a flue gas that leaves the boiler with 2 coal furnace through a pipeline 4. Flue gas from the boiler with 2 coal furnace contains particles of dust, which must be removed from the flue gas before combustion gas can be released into the surrounding air. Pipeline 4 delivers the flue gas in the electrostatic precipitator, the IRB 6, which is located downstream of the combustion gases relative to the pot 2. The IRB 6 contains what is usually called the first area 8, the second area 10 and the third area of 12, who are consistently when viewed against the direction of flow of the combustion gases. Three areas 8, 10, 12 electrically isolated from each other. Each of the areas 8, 10, 12 supplied with a corresponding control unit 14, 16, 18, regulating the functioning of the relevant rectifier 20, 22, 24.

Each of the areas 8, 10, 12 contains several corona electrodes and a few precipitation electrode plates, although the Figure 1, where for the sake of clarity the displayed image depicts only one discharge electrode 26 and precipitation electrode plate 28 of the first region 8. Figure 1 schematically represents the way rectifier 20 delivers the power, i.e. the voltage and current between the corona electrodes 26 and precipitation electrode plates 28 first area 8, charging of dust particles present in the flue gas. Dust particles, being charged this way, accumulate on the precipitation electrode plates 28. Similar processes occur in the second and third area of 10, 12. The collected dust is removed with a precipitation of electronic plates 28 via a so called shaker devices that are not shown in figure 1, and finally accumulate in bunkers 30, 32, 34.

The pipeline 36 is designed so that it delivers the movement furnace gas, of which at least part of the dust particles has been removed from the IRB 6 in the exhaust pipe 38. Chimney 38 displays furnace gas in the atmosphere.

The sensor 40 temperature measures the temperature in the flue gas, which is served in the pipeline 4. The sensor 40 temperature transmits a signal that contains information about the measured temperature of the combustion gases, control computer 42 installation. Control computer 42 installation, in turn, sends signals containing information about the measured temperature of the combustion gases, on each of the devices, 14, 16, 18 management. The device 14, 16, 18 management manages the work of relevant rectifiers 20, 22, 24 in accordance with the principles that will be explained in more detail below.

Figure 2 depicts the chart and illustrates one solution, which is based on the present invention. The y axis of the chart illustrates, the voltage applied through rectifier 20 between the corona electrodes 26 and precipitation electrode plates 28 first area 8, (Fig 1). The x axis of the chart presented in figure 2 corresponds to the temperature in the flue gas, measured by a sensor 40 temperature (Figure 1). Chart in figure 2 illustrates the three curves, each of which corresponds efficiency of removal of dust particles in the first area 8. Figure 2 these curves correspond to the efficiency of 60%, 70% and 80% of removal of dust particles in the first area 8. As you might expect, for a high efficiency of removal of dust particles require high voltage. As illustrated in figure 2, it was found that power, and therefore the voltage required to meet a certain efficiency of removal of dust particles is lower at higher temperature furnace gas than at lower temperature of the combustion gases. Thus, for example, voltage, V1, is required to obtain an efficiency of 60% removal of the first temperature T1, higher voltage V2 that you want to achieve the same efficiency deleted during the second temperature T2, higher than the first temperature T1.

Removal of dust particles in the electrostatic precipitator 6 depends, inter alia, on the distribution of electric corona discharge generated around emitting electrodes 26. Certain efficiency of removal of dust particles corresponds to a certain extent corona discharge. One possible explanation for the behavior presented in figure 2, is that the voltage required for the generation of corona discharge with a certain length at high temperature flue gas, lower than the voltage required for the generation of corona discharge for the same length at low temperature of the combustion gases.

Figure 3 depicts how the power management in accordance with the technology, according to art. Figure 3 illustrates the power control in the first area, but note that, in accordance with the method according to the level of techniques similar technology can be applied to all areas of the electrostatic precipitator.

The method is illustrated in Figure 3, the control unit, regulating the rectifier of the first area, regulate voltage within the specified range VR stresses. The range of the VR stress has a lower level VO and the target level VT voltage. The control unit makes the rectifier to make the starting voltage, i.e. voltage VO, and then to increase the voltage at a certain speed RR linear voltage change, that is derived from the voltage curve presented in figure 3. The objective of the method of management in accordance with the level of technology is the application level VO voltage and the voltage is rising at a speed of RR linear voltage change to the target voltage VT, where the path specified voltage indicated by the arrows in figure 3. However, when the voltage between VS corona electrodes and precipitation electrode plates occurs spark overlap, and the control unit can make the rectifier to interrupt the power delivery. After a short period of time, for example, 1-30 MS, the control unit makes the rectifier to applying the voltage VO and increase the voltage again, in accordance with the speed of RR linear voltage change, to achieve the target voltage VT. Note that the voltage VS frequency at which spark floors are reached, will change due to the change of the regime, with regard to the workload of the dust particles, etc., electrostatic precipitator.

Figure 4 depicts a variant of the implementation of the present invention. This alternative implementation based on the fact that illustrated in figure 2, i.e. that flue gas temperature affects the power required to achieve an adequate efficiency of removal of dust particles. In embodiment, illustrated in figure 4, the power supplied by the rectifier 20, as illustrated in figure 1, regulate indirectly, by adjusting the voltage.

At the first stage illustrated as 50 in figure 4, where the flue gas temperature is measured, for example, by a sensor 40 temperature (Figure 1). At the second stage illustrated as 52 in figure 4, where the voltage range is chosen on the basis of temperature, measured at the first stage. At the third stage illustrated as 54 in figure 4, where the speed linear voltage change is chosen on the basis of temperature, measured at the first stage. On the fourth and final stage is illustrated as 56 in figure 4, where the voltage applied rectifier, for example rectifier 20 between the corona electrodes 26 and precipitation electrode plates 28, regulate, in accordance with the selected voltage range and the selected speed linear voltage change. In addition, as shown in Figure 4 by the line cycle, the flue gas temperature is then measured again and choose a new range of voltages, and the new speed linear voltage. The frequency you select a new range of voltages, and the new speed linear voltage can be set on the basis of the expected stability of the temperature of the combustion gases. For some installations may be sufficient to select a new ranges of voltage and the new speed linear voltage change every hour, whereas for other installations may require much more frequent choice of voltage range and speed linear voltage change due to fluctuations in the temperature of the combustion gases at high frequency.

Note that the method of control is illustrated in Figure 4, can be applied to each of the devices, 14, 16, 18 control, or to any one or two of them.

Figure 5 schematically depicts how you can choose the value of the target voltage on the basis of the temperature of the combustion gases. The curve is illustrated in the diagram presented in Fig. 5 reflects the desired efficiency dust removal, i.e. 70%. At temperature T1, for example, 150 C, the value VT1 target voltage is chosen, as shown in Figure 5. At temperature T2, equal, for example, 200 C choose the value VT2 target voltage, as shown in Figure 5. The value VT2 target voltage, selected at temperature T2, lower than the value VT1 target voltage, selected at temperature T1, and this temperature T1 below the temperature T2. Based on the values selected target voltage select the voltage range. You can select the voltage range at temperatures T1 to start at a lower voltage VO, and for the end of the process when set to VT1 target voltage. The voltage range at temperature T2, you can choose to start the process at the same time, lower voltage, VO, and for the end of the process when set to VT2 target voltage. Therefore, the voltage range at temperature T2 will be more narrow.

6 schematically depicts how the value of the speed linear voltage can be selected on the basis of the temperature of the combustion gases. The curve is illustrated in the diagram presents figure 6, shows the relationship empirically found appropriate values speed linear voltage change on the temperature of the combustion gases. The speed linear voltage change describes the rate of rise of voltage in the range of voltages. A unit of speed linear voltage change is volts per second. At temperature T1, for example, 150 C select the value of RR1 speed linear voltage change, as described in figure 6. At temperature T2, for example, 200 C choose the value of RR2 speed linear voltage change, as shown in Fig.6. The value of RR2 speed linear voltage change, selected at temperature T2, as shown in figure 6, below the value of RR1 speed linear voltage change, selected at temperature T1, and this temperature T1 below the temperature T2.

Fig.7 shows the graph of the method of regulation of power in accordance with the embodiment of the present invention, and at temperature T1, for example, 150 C. the Power supplied through a rectifier 20, indirectly regulate, by adjusting the voltage. Fig.7 shows the scheme of voltage regulation the first area of 8, but also note that the second and third area 10 and 12 can be adjusted in the same way.

In the way (Fig.7) device 14 management, regulatory rectifier 20 first area 8 regulates the voltage in the range VR1 voltages, and the voltage range is from lower voltage VO and to the selected value VT1 target voltage, the choice of which was described above with reference to Figure 5. The device 14 management makes the rectifier to submit starting voltage, that is, the lower the voltage, VO, and to increase the voltage at the selected value of RR1 speed linear voltage change, the choice of which was described above with reference to Fig. 6. The task of the device 14 management is to increase the voltage at the value of RR1 speed linear voltage change, to achieve the target voltage VT1, and the path specified voltage indicated by the dotted arrows 7. However, when the voltage of near values VS1 between the corona electrodes 26 and precipitation electrode plates 28 occurs spark overlap, and the device 14 management can make rectifier 20 to interrupt the power delivery. After a short period of time, for example 1-30 MS, device 14 management makes rectifier 20 to applying the voltage VO and again to increase the voltage in accordance with the value of the speed linear voltage change RR1, to achieve the target voltage VT1. During the time t, the specified figure 7, there are only three cycle interruption in the voltage supply.

On Fig chart shows how power control in accordance with the embodiment of the present invention, and at temperature T2, for example, 200 C. As illustrated by figure 7, the power supplied by the rectifier 20, indirectly regulate by means of voltage regulation. On Fig shows the voltage regulator is the first area is 8, but you should also be aware that the voltage in the second and third areas 10 and 12 can be adjusted in the same way.

When comparing Fig.7 and Fig shows that the higher the temperature T2, as shown in Fig, causes fewer cycles interruption of power per unit of time, in comparison with many cycles interruption of power at a lower temperature T1, as shown in Fig.7. The effect is that at a higher temperature T2 mechanical and electrical effects on the rectifier 20 and other electrical equipment are reduced, that, thus, increases the service life of the electrostatic precipitator 6. In addition, the electrical energy supplied to the region 8, that is the energy which is proportional to the voltage multiplied by time, i.e. proportional to the area under the curve voltage Fig, is increased with the reduction of the number of cycles supply power. Increased electricity supplied at a temperature T2 furnace gas, increases the efficiency of removal of dust particles for electrostatic precipitator.

Therefore, taking into account the temperature of flue gas regulation electrostatic precipitator is possible to increase the efficiency of such regulation and reduce the wear and tear of mechanical and electrical components by reducing the number spark of overlap and minimize the risk of spark. You can also increase the total input power, which leads to the increasing efficiency of removal of dust particles.

Figure 9 depicts an alternative implementation of the present invention. According to this option the implementation of a flue gas temperature record only when you select the speed linear voltage change, but not when selecting the range of voltages, the last remains constant, regardless of the temperature of the combustion gases. Figure 9 depicts the situation at high temperature T2. Selected VT1 target voltage and selected range VR1 voltage can be the same as when working at low temperatures, in comparison with the situation described in figure 7. The value of RR2 speed linear voltage change at high temperature T2 was selected based on the chart, is shown in Fig.6. When comparing the curve stress, presented in Figure 9, with the curve stresses presented on Fig, it becomes clear that the number of interruptions of power supply and the supplied electricity is actually the same in these two cases. However, the range of VR1 voltages according to the method presented on Fig.9, wider range VR2 voltages according to the method presented on Fig, and that in some situations can lead to high electrical load on the rectifier 20 when in accordance with the method presented in Figure 9, in comparison with its work in accordance with the method presented on 7 and Fig.

Figure 10 depicts one more variant of implementation of the present invention. The situation is shown in Figure 10, similar to the one shown in Fig, i.e. capacity management adapted to high temperatures, for example 200 C, due to the use of linear speed change of capacity, lower than the speed linear changes of power used when a lower temperature of the combustion gases. The difference compared with the situation presented on Fig, is that the speed linear voltage change is not constant during all phases of a linear voltage change. Consequently, as shown in Figure 10, the speed linear voltage change the source is quite high, as shown in Figure 10 are speed of A linear voltage change. Then the speed linear voltage is reduced, as indicated by the speed B linear voltage change. Finally, the speed linear voltage rises again, as indicated by the finite speed of C a linear voltage change. One advantage of the speed linear voltage change during the same cycle is that on electrostatic precipitator can submit more power because of high initial speed of A linear voltage change quickly bring power to a high level. Then this high level of power support over a long enough period of time at low speed B linear voltage change. Finally, high speed C a linear voltage change allows quickly reach a situation spark overlap. Note that the speed linear changes within the same cycle may also differ in other ways, with the achievement of other effects.

According to another version, the implementation can change the selected range VR2 stresses within the same cycle of a linear voltage change for better regulation of the amount of power applied to the electrostatic precipitator. Therefore, as illustrated in Figure 10, the selected range VR2 stress can have the first value for the first part of the cycle of a linear changes. In the last part of the cycle of a linear voltage change is selected target voltage can be increased from VT2 to VT2', to obtain a new band selected VR2' stress, wider than the original selected range VR2 stresses.

Therefore, you can modify either the speed linear voltage or range of voltage or change speed linear voltage or range of voltage during the same cycle of a linear voltage change, as illustrated in Fig.10. In the latter case, select the speed linear voltage change and a range of stress during the same cycle of a linear voltage change can be affected, and not to depend on each other.

Note that in the framework of the volume supplied claims there are various options for implementation described above.

Above, with reference to Fig. 4-10, has been described that the power supplied by a rectifier, and this power is the product of the current and the voltage supplied indirectly regulate by regulating the supply voltage, i.e. by regulating the voltage range and/or speed linear voltage change. At the same time, the current can be kept constant or changed. In the latter case, the current can properly raise and, at the same time, increase adjustable parameter, i.e. the voltage, resulting in a higher power, which is the product of voltage and current. Note that also may be other alternatives. One such alternative is the regulation of the power delivered by the rectifier indirectly, through regulation of the range of current and/or speed linear changes of a current, in accordance with the same principles as described above with reference to Fig. 4-10 on voltage range and speed linear changes voltage. In addition, it is also possible indirect control of power by the simultaneous regulation of voltage and current, i.e. by regulating the voltage and current and/or speeds linear changes of voltage and current. In accordance with another option exercise can also to be the ability to have a controller 42, directly governing power, i.e. regulating range of capacity and/or speed linear change of power in accordance with the same principles that were described above with reference to Fig. 4-10, relatively voltage range and speed linear voltage change. Consequently, the output can be controlled, directly or indirectly, and under that indirect regulation understand the regulation of voltage and/or current.

Above describes what the flue gas temperature is measured in line 4, upstream relative to the electrostatic precipitator 6. Note that the temperature of the flue gas can also be measured in other locations, for example in the pipeline 36, or even within the electrostatic precipitator 6. An important conclusion is that the measurement should provide relevant specifying the terms of the temperature of the combustion gases within the electrostatic precipitator 6.

Here and above with reference to Fig. 4-8 and 10 described as the range of voltages, and the speed linear voltage can be selected on the basis of the temperature of the combustion gases. In addition, the above-described, with reference to the Fig.9 that only the speed linear voltage can be selected on the basis of the temperature of the combustion gases, with the range voltage remains constant, regardless of the temperature of the combustion gases. Note that as another alternative, you can also select only the voltage range on the basis of the temperature of the combustion gases, and the speed linear voltage change to maintain a constant, regardless of the temperature of the combustion gases. Therefore, you can select the speed linear voltage or the range of voltages, or both, taking into account the flue gas temperature at which operates electrostatic precipitator 6. This applies similarly to the cases in which the current is regulated instead of, or along with the voltage, and for cases in which directly regulate capacity. Thus, you can select the speed linear change of capacity or power range, or both, in relation to the temperature of the combustion gases.

As described above, each device 14, 16, 18 management carries out reception of a signal that contains information about the temperature of the combustion gases, and selects the power range and, accordingly, the speed linear changes of power. As an alternative, the Central unit, such as the control computer 42 installation, can work to receive a signal containing information about the temperature of the combustion gases, and to select the range of capacity and/or speed linear change of power, which are then distributed to each of the devices, 14, 16, 18 management.

Although it was discovered that this invention is effective for most types of dust particles, also found that it is effective for the so-called low-resistance dust, i.e. dust, with volume resistivity of less than 1 x 10 10 Ohm·cm, as measured, for example, with the IEEE Std 548-1984: "IEEE Standard Criteria and Guidelines for the Laboratory Measurement and Reporting of Fly Ash Resistivity", The Institute of Electrical and Electronics Engineers, Inc, New York, USA.

Above described that the value of the target voltage is chosen on the basis of the temperature of the combustion gases, and that the selected value of the target voltage is used to select the voltage range within which regulate voltage. In the examples described above, the lower the voltage VO of the selected voltage range has always been fixed, regardless of the temperature of the combustion gases. However, note that you can also select the lower limit, i.e. the lower the voltage VO from a range of stresses, on the basis of a working option, such as the measured temperature of the combustion gases. In the latter case, the lower voltage VO appropriate range of voltages at high temperatures, flue gas can be below, than at low temperatures of the combustion gases.

Summing up, we can say that the way of the control of work electrostatic precipitator 6 includes the use of the control algorithm for the supply of power between at least one of precipitation electrode 28 and at least one corona-forming electrode 26, the control algorithm includes the direct or indirect regulation of the range of capacity and/or speed linear changes of power. Measure the temperature of the process gas. When the control algorithm includes the regulation of the power range, the range VR1, VR2 power is chosen based on the measured temperature, and the value of the upper limit VT1, VT2 range of capacities at high temperature T2 technology gas is cheaper than at low temperature T1. When the control algorithm includes the regulation of speed linear change of capacity, speed RR1, RR2 linear change of power is chosen based on the measured temperature, and speed linear change of power at high the temperature T2 process gas is cheaper than at low temperature T1. The power supplied between at least one of precipitation electrode 28 and at least one corona-forming electrode 26 govern in accordance with the control algorithm.

1. The way of control electrostatic precipitator (6)for the removal of dust particles from the process gas, characterized in that it contains the time that: use the control algorithm for power applied between at least one of precipitation electrode (28) and at least one corona electrode (26), and the control algorithm contains direct or indirect regulation, at least one of the ranges (VR1, VR2) capacity and speed (RR1, RR2) linear changes of power, measure the temperature (T1, T2) process gas, choose, when the control algorithm contains regulation range of capacities, with the range (VR1, VR2) capacities on the basis of measured temperatures (T1, T2)and the value (VT1, VT2) upper range limit (VR1, VR2) capacity at high temperature (T2) process gas is lower than at low temperature (T1) process gas, choose when the control algorithm holds the regulation of speed linear change of power, and the speed (RR1, RR2) power control on the basis of measured temperatures (T1, T2), and the velocity (RR1, RR2) linear change of power at high temperature (T2) process gas lower than at low temperature (T1) process gas, and regulate power, enclosed between at least one of precipitation electrode (28) and at least one corona-forming electrode (26), in accordance with the control algorithm.

2. The method according to claim 1, which further when the range selection (VR1, VR2) capacity and/or speed (RR1, RR2) linear power measurement using the relation between temperature (T1, T2) process gas and power applied between at least one of precipitation electrode (28) and at least one corona electrode (26).

3. The method according to claim 1, wherein the control algorithm holds the speed control (RR1, RR2) linear changes of power.

4. The method according to claim 1, wherein the control algorithm holds the regulation range (VR1, VR2) voltage and speed (RR1, RR2) linear voltage change.

5. The method according to claim 1, wherein the control algorithm holds the use of at least two different speeds (A, B, C) linear changes of power within one and the same sequence of linear changes.

6. The method according to claim 1, wherein the control algorithm holds the use of at least two different ranges (VR2, VR2') capacity for one and the same sequence of linear changes.

7. A device for controlling electrostatic precipitator (6) for the removal of dust particles from the process gas, characterized in that it contains: controller (14, 16, 18) to regulate the power delivered between at least one of precipitation electrode (28) and at least one corona-forming electrode (26), in accordance with the control algorithm for the power delivered between at least one of precipitation electrode (28) and at least one corona-forming electrode (26), and the control algorithm contains direct or indirect regulation at least one of the ranges (VR1, VR2) capacity and speed (RR1, RR2) linear change of capacity, and the controller (14, 16, 18) provides reception of a signal indicating the temperature (T1, T2) process gas, and the selection when the control algorithm holds the regulation range capacity and range (VR1, VR2) capacities on the basis of measured temperatures (T1, T2)and a value (VT1, VT2) the upper limit of the above-mentioned range (VR1, VR2) capacity at high temperature (T2) process gas is lower than at low temperature (T1) process gas, and/or the selection when the control algorithm holds the stage speed control linear changes of power, speed (RR1, RR2) linear changes power on the basis of measured temperatures (T1, T2), and the velocity (RR1, RR2) linear change of power at high temperature (T2) process gas lower than at low temperature (T1) process gas.

8. The device according to claim 7, wherein is the device enables the use of correlation between temperature (T1, T2) process gas and power applied between at least one of precipitation electrode (28) and at least one corona-forming electrode (26), when you select a band (VR1, VR2) capacity and/or speed (RR1, RR2) linear changes of power.

9. The device according to claim 7, in which the control algorithm holds the speed control (RR1, RR2) linear changes of power.

10. The device according to claim 7, in which the control algorithm holds the regulation range (VR1, VR2) capacity and speed (RR1, RR2) linear changes of power.

11. The device according to claim 7, in which the control algorithm holds the use of at least two different speeds (A, B, C) linear changes of power within one and the same sequence of linear changes.

12. The device according to claim 7, in which the control algorithm holds the use of at least two different ranges (VR2, VR2') capacity for one and the same sequence of linear changes.