CA2801786A1 - Electrostatic precipitator for cleaning dust-laden exhaust gases - Google Patents
Electrostatic precipitator for cleaning dust-laden exhaust gases Download PDFInfo
- Publication number
- CA2801786A1 CA2801786A1 CA2801786A CA2801786A CA2801786A1 CA 2801786 A1 CA2801786 A1 CA 2801786A1 CA 2801786 A CA2801786 A CA 2801786A CA 2801786 A CA2801786 A CA 2801786A CA 2801786 A1 CA2801786 A1 CA 2801786A1
- Authority
- CA
- Canada
- Prior art keywords
- knocking
- electrode
- discharge
- collecting
- electrodes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/74—Cleaning the electrodes
- B03C3/76—Cleaning the electrodes by using a mechanical vibrator, e.g. rapping gear ; by using impact
- B03C3/761—Drive-transmitting devices therefor, e.g. insulated shafts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/02—Plant or installations having external electricity supply
- B03C3/04—Plant or installations having external electricity supply dry type
- B03C3/08—Plant or installations having external electricity supply dry type characterised by presence of stationary flat electrodes arranged with their flat surfaces parallel to the gas stream
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrostatic Separation (AREA)
Abstract
The invention relates to an electrostatic precipitator (1) for cleaning dust-laden exhaust gases (A), comprising a plurality of rows of grounded precipitation electrodes (2), said rows being arranged in a housing, and discharge electrodes (3), which are arranged between the rows of precipitation electrodes (2) and which are at negative high voltage, wherein rapping devices (4, 5), which each have at least one knocking element (6, 7) for intermittently knocking the dust off the precipitation electrodes (2) and the discharge electrodes (3), are associated with the precipitation electrodes (2) and the discharge electrodes (3), and the precipitation electrode rapping device (5) has a drive device for the at least one knocking element (6) of the precipitation electrode rapping device (5). According to the invention, the discharge electrode rapping device (4) is coupled to the drive device of the precipitation electrode rapping device (5) so that the at least one knocking element (7) of the discharge electrode rapping device (4) can be actuated by the drive device of the precipitation electrode rapping device (5).
Description
ELECTROSTATIC PRECIPITATOR FOR CLEANING DUST-LADEN EXHAUST GASES
The invention relates to an electric filter for cleaning dust-laden waste gases, comprising a plurality of rows of grounded collecting electrodes arranged in a housing, and discharge electrodes arranged between the rows of the collecting electrodes and being under negative high voltage, wherein knocking means comprising at least one knocking member for periodically knocking off the dust from the collecting electrodes and the discharge electrodes are assigned to the collecting electrodes and the discharge electrodes, and wherein the collecting electrode knocking means comprises a drive device for the at least one knocking member of the collecting electrode knocking means.
Waste gases loaded with dust and/or aerosol, which usually originate from combustion processes, are frequently cleaned with electric filters. In the electric filters, the dust particles are predominantly ionized negatively by the discharge electrodes that are under negative high voltage. The negatively charged dust particles migrate to the positively charged or grounded collecting electrodes and deposit there in the course of time in the form of a dust layer. Both the discharge electrodes, where dust layers also form, and the collecting electrodes are cleaned periodically, for instance, by knocking, and the dust coming off is, for instance, collected in a dust collecting funnel and transported in appropriate containers for further disposal or recycling.
The cleaning of the collecting electrodes is usually performed by periodic mechanical blows by means of appropriate knocking members, in particular hammers or tappets. The individual collecting electrodes or a plurality of collecting electrodes are cleaned collectively by a so-called tumble hammer hitting on an appropriate anvil. The acceleration generated detaches the adhering dust layers.
Knocking means for an electric filter are, for instance, known from DE 1 112 499, DE 1 865 538, or DE 101 24 871 Cl.
DE 43 22 162 Cl discloses an electric filter with a specific drive of a horizontally arranged hammer shaft. DE 28 39 542 Al describes an electric filter with a mechanically operable knocking means, wherein the knocking elements are insulated from each other by means of disc insulators.
More rarely is the cleaning of the collecting electrodes of electric filters performed by means of vibration stimulation, notching devices, vibrators, brushes, or compressed air. Such systems are, for instance, known from DE 38 37 439 Al, DE 103 00 549 Al, or DE 197 28 369 Al.
In addition to the collecting electrodes that are subject to stronger pollution, corresponding dust layers also deposit on the discharge electrodes, so that the discharge electrodes also have to be cleaned at appropriate time intervals. Since the discharge electrodes are under a corresponding negative high voltage, the components of the cleaning means for the discharge electrodes correspondingly have to be insulated from the ground potential. For this purpose, in the case of knocking cleaning systems, the drive device of the discharge electrode knocking means which is arranged separately from the collecting electrode knocking means is insulated by a rotating insulator or bushing insulator in the shaft supply. The rotating insulator is arranged externally of the gas flow, if possible, and is partially impacted with cleaning air so as to avoid pollutions and the resulting flash-overs up to destruction.
A disadvantage with the known electric filters with collecting electrode and discharge electrode cleaning means is the high effort caused by the separate drive devices for the two electrode systems and the effort for the insulation of the cleaning means for the discharge electrodes.
Moreover, the necessary components for the cleaning of the collecting electrodes and of the discharge electrodes increase the overall size of the electric filter. This disadvantage is still increased by the fact that the drive device for the collecting electrode knocking means is arranged at an appropriate distance from the drive device for the discharge electrode knocking means so as to safely avoid possible flash-overs between the systems being of different potentials.
The object of the present invention therefore consists in providing an above-mentioned electric filter comprising cleaning means for the collecting and discharge electrodes, which has a preferably simple, cost-efficient, and space-saving construction and enables an efficient cleaning of the collecting electrodes and of the discharge electrodes.
Disadvantages of known electric filters and their cleaning methods are intended to be avoided or at least reduced.
The object according to the invention is solved by an above-mentioned electric filter in which the discharge electrode knocking means is connected with the drive device of the collecting electrode knocking means, so that the at least one knocking member of the discharge electrode knocking means is adapted to be actuated by the drive device of the collecting electrode knocking means. In accordance with the invention, the collecting electrode knocking means is thus coupled with the discharge electrode knocking means, so that an appropriate drive device is required only for the collecting electrode knocking means. The drive device for the discharge electrode knocking means may be omitted since the actuation of the knocking members, in particular hammers, of the discharge electrode knocking means is performed indirectly by the drive device of the collecting electrode knocking means. Thus, the corresponding components that would be required for driving the knocking members of the discharge electrode knocking means may be omitted, and no measures have been taken for their electric insulation from the ground, either. Hence, costs and space may be saved.
In accordance with one feature of the invention, the drive device of the collecting electrode knocking means is coupled with the at least one knocking member of the discharge electrode knocking means by at least one insulated actuator. Such a construction is relatively easy to implement and comprises the safety and robustness required for operation. If the drive device of the collecting electrode knocking means is actuated to have the appropriate knocking members, in particular hammers, act on the collecting electrodes, the knocking members for the discharge electrodes can be actuated via the insulated actuator, so that they also act on the discharge electrodes and hence the dust layer is flung away.
Usually, the drive device of the collecting electrode knocking means comprises a drive shaft connected with a drive motor and a pertinent gear mechanism. The at least one knocking member of the collecting electrode knocking means is arranged on this drive shaft. An appropriate control means activates the drive motor at certain times, so that the at least one knocking member is actuated at these times and the collecting electrodes are thus cleaned.
With this construction it is of advantage if each insulated actuator is also arranged on the drive shaft of the collecting electrode knocking means and is adapted to be taken along by the movement of the drive shaft of the collecting electrode knocking means, and the at least one knocking member of the discharge electrode knocking means is adapted to be actuated by the actuator. If the drive shaft of the collecting electrode knocking means is thus actuated, every insulated actuator that is arranged thereon will also be actuated and hence acts on the respective knocking member for the discharge electrodes. Thus, an actuation of the knocking members of the discharge electrode knocking means is performed automatically whenever the collecting electrode knocking means is actuated. An extra drive device for the discharge electrode knocking means is not necessary, and hence their electric insulation is not necessary, either.
Advantageously, a position generator is arranged at the drive shaft of the collecting electrode knocking means, so that the drive shaft and each actuator arranged thereon is adapted to be taken to a defined starting position after the completion of a cleaning process. After the cleaning process, a predetermined position of the drive shaft is hence achieved. It is of particular advantage if each actuator points substantially perpendicularly downward once it is not needed, so that the actuator offers a preferably small contact surface for dust and need not assume a permanent insulating function. Apart from the undesired pollution of the actuator, the insulating effect of the actuator might be hindered by dust adhering thereto, so that flash-overs might take place in the case of cleaning.
In accordance with a further feature of the invention, an entrainment device, for instance, a rotatably mounted roller, is arranged at the free end of each actuator, which is adapted to be rotated on contact with the at lest one knocking member of the discharge electrode knocking means. The provision of such entrainment device avoids frictions between the insulated actuator and the knocking member of the discharge electrode knocking means. The entrainment device, in particular the rotatably mounted roller, thus rolls off at the knocking member of the discharge electrode knocking means and actuates same without causing disturbance or destruction by friction.
Advantageously, a plurality of collecting electrodes are connected with each other, for instance, via a connector bar, wherein an anvil is arranged at the combination of a plurality of collecting electrodes for each knocking member of the collecting electrode knocking member. By the knocking of the knocking member on the anvil, the entire combination of the collecting electrodes is hence supplied with an appropriate impulse, so that the dust layer of the entire combination of collecting electrodes is flung away therefrom. By combining a plurality of collecting electrodes it is possible to have a correspondingly small and space-saving design of the knocking means. This is of particular advantage for smaller electric filters.
Likewise, a plurality of discharge electrodes may be connected by at least one frame, and a plurality of discharge electrode frames by at least one connector bar if need be, wherein an anvil for each knocking member of the discharge electrode knocking means is arranged on at least one discharge electrode frame or at least one connector bar. Here, too, it is possible to knock on a combination of discharge electrodes with one blow of each knocking member on a pertinent anvil.
A space-saving design variant may be achieved in that each discharge electrode frame comprises an appropriate indentation in the region of the discharge electrode knocking means. The knocking members for the discharge electrodes are thus arranged next to the indentation of the discharge electrode frame, so that the outer dimensions of an electric filter having the design of the invention do not deviate substantially from the dimensions of an electric filter without cleaning means.
It is of advantage if the discharge electrode knocking means is arranged in the lower region of the discharge electrode frame and the discharge electrode frame is designed to converge in this lower region. Without the necessity of modifying the housing of such an electric filter, the knocking means for the discharge electrodes finds its place next to the converging lower region of the discharge electrode frame.
The present invention will be explained in detail by means of the enclosed drawings.
There show:
Fig. 1 a schematic view of an electric filter;
Fig. 2 a schematic embodiment of the internal structures of an electric filter according to the invention;
Fig. 3 a detailed view of an embodiment of the coupling between the drive of the collecting electrode knocking means and the discharge electrode knocking means in enlarged scale; and Fig. 4 a frame for combining a plurality of discharge electrodes, in a schematic view.
Fig. 1 illustrates an electric filter 1 for cleaning dust-laden waste gases A that are supplied from one side of the electric filter 1. Usually, the components of the electric filter 1 are accommodated in a housing G. The electric filter 1 consists of rows of collecting electrodes 2 which are usually designed in the form of plates. Discharge electrodes 3 being on a negative high voltage potential are arranged between the rows of the collecting electrodes 2. Appropriate knocking means 4, 5 are assigned to the collecting electrodes 2 and the discharge electrodes 3. The knocking means for the collecting electrodes and the discharge electrodes comprise appropriate knocking members 6 and 7 knocking on appropriate anvils 8 and 9 of the collecting electrodes 2 or the discharge electrodes 3, respectively, and effecting a flinging away of the adhering dust layer.
The controlling of the knocking members 6, 7 of the collecting electrodes 2 or the discharge electrodes 3, respectively, is performed by appropriate drive devices.
Depending on the dust load, the cleaning is repeated at different time intervals. In prior art, appropriate components and drives are necessary both for the collecting electrode knocking means 5 and for the discharge electrode knocking means 4, which increase the effort, the costs, and the overall size of the electric filter.
The invention relates to an electric filter for cleaning dust-laden waste gases, comprising a plurality of rows of grounded collecting electrodes arranged in a housing, and discharge electrodes arranged between the rows of the collecting electrodes and being under negative high voltage, wherein knocking means comprising at least one knocking member for periodically knocking off the dust from the collecting electrodes and the discharge electrodes are assigned to the collecting electrodes and the discharge electrodes, and wherein the collecting electrode knocking means comprises a drive device for the at least one knocking member of the collecting electrode knocking means.
Waste gases loaded with dust and/or aerosol, which usually originate from combustion processes, are frequently cleaned with electric filters. In the electric filters, the dust particles are predominantly ionized negatively by the discharge electrodes that are under negative high voltage. The negatively charged dust particles migrate to the positively charged or grounded collecting electrodes and deposit there in the course of time in the form of a dust layer. Both the discharge electrodes, where dust layers also form, and the collecting electrodes are cleaned periodically, for instance, by knocking, and the dust coming off is, for instance, collected in a dust collecting funnel and transported in appropriate containers for further disposal or recycling.
The cleaning of the collecting electrodes is usually performed by periodic mechanical blows by means of appropriate knocking members, in particular hammers or tappets. The individual collecting electrodes or a plurality of collecting electrodes are cleaned collectively by a so-called tumble hammer hitting on an appropriate anvil. The acceleration generated detaches the adhering dust layers.
Knocking means for an electric filter are, for instance, known from DE 1 112 499, DE 1 865 538, or DE 101 24 871 Cl.
DE 43 22 162 Cl discloses an electric filter with a specific drive of a horizontally arranged hammer shaft. DE 28 39 542 Al describes an electric filter with a mechanically operable knocking means, wherein the knocking elements are insulated from each other by means of disc insulators.
More rarely is the cleaning of the collecting electrodes of electric filters performed by means of vibration stimulation, notching devices, vibrators, brushes, or compressed air. Such systems are, for instance, known from DE 38 37 439 Al, DE 103 00 549 Al, or DE 197 28 369 Al.
In addition to the collecting electrodes that are subject to stronger pollution, corresponding dust layers also deposit on the discharge electrodes, so that the discharge electrodes also have to be cleaned at appropriate time intervals. Since the discharge electrodes are under a corresponding negative high voltage, the components of the cleaning means for the discharge electrodes correspondingly have to be insulated from the ground potential. For this purpose, in the case of knocking cleaning systems, the drive device of the discharge electrode knocking means which is arranged separately from the collecting electrode knocking means is insulated by a rotating insulator or bushing insulator in the shaft supply. The rotating insulator is arranged externally of the gas flow, if possible, and is partially impacted with cleaning air so as to avoid pollutions and the resulting flash-overs up to destruction.
A disadvantage with the known electric filters with collecting electrode and discharge electrode cleaning means is the high effort caused by the separate drive devices for the two electrode systems and the effort for the insulation of the cleaning means for the discharge electrodes.
Moreover, the necessary components for the cleaning of the collecting electrodes and of the discharge electrodes increase the overall size of the electric filter. This disadvantage is still increased by the fact that the drive device for the collecting electrode knocking means is arranged at an appropriate distance from the drive device for the discharge electrode knocking means so as to safely avoid possible flash-overs between the systems being of different potentials.
The object of the present invention therefore consists in providing an above-mentioned electric filter comprising cleaning means for the collecting and discharge electrodes, which has a preferably simple, cost-efficient, and space-saving construction and enables an efficient cleaning of the collecting electrodes and of the discharge electrodes.
Disadvantages of known electric filters and their cleaning methods are intended to be avoided or at least reduced.
The object according to the invention is solved by an above-mentioned electric filter in which the discharge electrode knocking means is connected with the drive device of the collecting electrode knocking means, so that the at least one knocking member of the discharge electrode knocking means is adapted to be actuated by the drive device of the collecting electrode knocking means. In accordance with the invention, the collecting electrode knocking means is thus coupled with the discharge electrode knocking means, so that an appropriate drive device is required only for the collecting electrode knocking means. The drive device for the discharge electrode knocking means may be omitted since the actuation of the knocking members, in particular hammers, of the discharge electrode knocking means is performed indirectly by the drive device of the collecting electrode knocking means. Thus, the corresponding components that would be required for driving the knocking members of the discharge electrode knocking means may be omitted, and no measures have been taken for their electric insulation from the ground, either. Hence, costs and space may be saved.
In accordance with one feature of the invention, the drive device of the collecting electrode knocking means is coupled with the at least one knocking member of the discharge electrode knocking means by at least one insulated actuator. Such a construction is relatively easy to implement and comprises the safety and robustness required for operation. If the drive device of the collecting electrode knocking means is actuated to have the appropriate knocking members, in particular hammers, act on the collecting electrodes, the knocking members for the discharge electrodes can be actuated via the insulated actuator, so that they also act on the discharge electrodes and hence the dust layer is flung away.
Usually, the drive device of the collecting electrode knocking means comprises a drive shaft connected with a drive motor and a pertinent gear mechanism. The at least one knocking member of the collecting electrode knocking means is arranged on this drive shaft. An appropriate control means activates the drive motor at certain times, so that the at least one knocking member is actuated at these times and the collecting electrodes are thus cleaned.
With this construction it is of advantage if each insulated actuator is also arranged on the drive shaft of the collecting electrode knocking means and is adapted to be taken along by the movement of the drive shaft of the collecting electrode knocking means, and the at least one knocking member of the discharge electrode knocking means is adapted to be actuated by the actuator. If the drive shaft of the collecting electrode knocking means is thus actuated, every insulated actuator that is arranged thereon will also be actuated and hence acts on the respective knocking member for the discharge electrodes. Thus, an actuation of the knocking members of the discharge electrode knocking means is performed automatically whenever the collecting electrode knocking means is actuated. An extra drive device for the discharge electrode knocking means is not necessary, and hence their electric insulation is not necessary, either.
Advantageously, a position generator is arranged at the drive shaft of the collecting electrode knocking means, so that the drive shaft and each actuator arranged thereon is adapted to be taken to a defined starting position after the completion of a cleaning process. After the cleaning process, a predetermined position of the drive shaft is hence achieved. It is of particular advantage if each actuator points substantially perpendicularly downward once it is not needed, so that the actuator offers a preferably small contact surface for dust and need not assume a permanent insulating function. Apart from the undesired pollution of the actuator, the insulating effect of the actuator might be hindered by dust adhering thereto, so that flash-overs might take place in the case of cleaning.
In accordance with a further feature of the invention, an entrainment device, for instance, a rotatably mounted roller, is arranged at the free end of each actuator, which is adapted to be rotated on contact with the at lest one knocking member of the discharge electrode knocking means. The provision of such entrainment device avoids frictions between the insulated actuator and the knocking member of the discharge electrode knocking means. The entrainment device, in particular the rotatably mounted roller, thus rolls off at the knocking member of the discharge electrode knocking means and actuates same without causing disturbance or destruction by friction.
Advantageously, a plurality of collecting electrodes are connected with each other, for instance, via a connector bar, wherein an anvil is arranged at the combination of a plurality of collecting electrodes for each knocking member of the collecting electrode knocking member. By the knocking of the knocking member on the anvil, the entire combination of the collecting electrodes is hence supplied with an appropriate impulse, so that the dust layer of the entire combination of collecting electrodes is flung away therefrom. By combining a plurality of collecting electrodes it is possible to have a correspondingly small and space-saving design of the knocking means. This is of particular advantage for smaller electric filters.
Likewise, a plurality of discharge electrodes may be connected by at least one frame, and a plurality of discharge electrode frames by at least one connector bar if need be, wherein an anvil for each knocking member of the discharge electrode knocking means is arranged on at least one discharge electrode frame or at least one connector bar. Here, too, it is possible to knock on a combination of discharge electrodes with one blow of each knocking member on a pertinent anvil.
A space-saving design variant may be achieved in that each discharge electrode frame comprises an appropriate indentation in the region of the discharge electrode knocking means. The knocking members for the discharge electrodes are thus arranged next to the indentation of the discharge electrode frame, so that the outer dimensions of an electric filter having the design of the invention do not deviate substantially from the dimensions of an electric filter without cleaning means.
It is of advantage if the discharge electrode knocking means is arranged in the lower region of the discharge electrode frame and the discharge electrode frame is designed to converge in this lower region. Without the necessity of modifying the housing of such an electric filter, the knocking means for the discharge electrodes finds its place next to the converging lower region of the discharge electrode frame.
The present invention will be explained in detail by means of the enclosed drawings.
There show:
Fig. 1 a schematic view of an electric filter;
Fig. 2 a schematic embodiment of the internal structures of an electric filter according to the invention;
Fig. 3 a detailed view of an embodiment of the coupling between the drive of the collecting electrode knocking means and the discharge electrode knocking means in enlarged scale; and Fig. 4 a frame for combining a plurality of discharge electrodes, in a schematic view.
Fig. 1 illustrates an electric filter 1 for cleaning dust-laden waste gases A that are supplied from one side of the electric filter 1. Usually, the components of the electric filter 1 are accommodated in a housing G. The electric filter 1 consists of rows of collecting electrodes 2 which are usually designed in the form of plates. Discharge electrodes 3 being on a negative high voltage potential are arranged between the rows of the collecting electrodes 2. Appropriate knocking means 4, 5 are assigned to the collecting electrodes 2 and the discharge electrodes 3. The knocking means for the collecting electrodes and the discharge electrodes comprise appropriate knocking members 6 and 7 knocking on appropriate anvils 8 and 9 of the collecting electrodes 2 or the discharge electrodes 3, respectively, and effecting a flinging away of the adhering dust layer.
The controlling of the knocking members 6, 7 of the collecting electrodes 2 or the discharge electrodes 3, respectively, is performed by appropriate drive devices.
Depending on the dust load, the cleaning is repeated at different time intervals. In prior art, appropriate components and drives are necessary both for the collecting electrode knocking means 5 and for the discharge electrode knocking means 4, which increase the effort, the costs, and the overall size of the electric filter.
Fig. 2 illustrates a schematic view of the internal structures of an embodiment of an electric filter 1 according to the invention, wherein the drive device of the collecting electrode knocking means 5 is formed by an appropriate drive motor 11, a gear mechanism 12, and an appropriate drive shaft 13. At least one knocking member 6, in particular at least one tumble hammer, is mounted on the drive shaft 13, and is rotated appropriately on actuation of the drive shaft 13 and is forced to knock on an anvil at the collecting electrodes 2, wherein a plurality of collecting electrodes 2 may also be combined via a connector bar 18 and may be cleaned jointly. In accordance with the invention, the drive device of the collecting electrode knocking means 5 is now coupled with the knocking member 7 of the discharge electrode knocking means 4, so that the knocking member 7 is adapted to be actuated via the drive shaft 13 of the collecting electrode knocking means S.
The detail pursuant to Fig. 3 renders this coupling clearer.
Accordingly, the drive shaft 13 of the drive device of the collecting electrode knocking means 5 is actuated during cleaning, and the pertinent knocking member 6 for the collecting electrodes 2 is rotated and dashed on the pertinent anvil 8 for the collecting electrodes 2. An insulated actuator 14 is arranged at the drive shaft 13 and actuates the knocking member 7 for the discharge electrode knocking means 4. A roller 15 rolling off at the appropriately designed knocking member 7 may be arranged at the insulated actuator 14. Thus, the knocking member 7 of the discharge electrode knocking means 4 is actuated and dashed against an appropriate anvil 9 at a connector bar combining a plurality of discharge electrode frames 19.
In accordance with the invention, an extra drive for the discharge electrode knocking means 4 is hence not required. The knocking member 7 of the discharge electrode knocking means 4 is actuated through the insulated actuator 4 arranged at the drive shaft of the collecting electrode knocking means 5.
Fig. 4 illustrates an embodiment of a frame 16 combining a plurality of discharge electrodes 3. The frame 16 is provided in the lower region with an indentation 19 in which the appropriate drive device for the collecting electrode knocking means 5 may be arranged. The result is an electric filter 1 having outer dimensions that are smaller than those of electric filters with conventional cleaning.
The present invention is of advantage in particular with smaller electric filters for biomass combustion in the output range of 0.3-3MW.
The detail pursuant to Fig. 3 renders this coupling clearer.
Accordingly, the drive shaft 13 of the drive device of the collecting electrode knocking means 5 is actuated during cleaning, and the pertinent knocking member 6 for the collecting electrodes 2 is rotated and dashed on the pertinent anvil 8 for the collecting electrodes 2. An insulated actuator 14 is arranged at the drive shaft 13 and actuates the knocking member 7 for the discharge electrode knocking means 4. A roller 15 rolling off at the appropriately designed knocking member 7 may be arranged at the insulated actuator 14. Thus, the knocking member 7 of the discharge electrode knocking means 4 is actuated and dashed against an appropriate anvil 9 at a connector bar combining a plurality of discharge electrode frames 19.
In accordance with the invention, an extra drive for the discharge electrode knocking means 4 is hence not required. The knocking member 7 of the discharge electrode knocking means 4 is actuated through the insulated actuator 4 arranged at the drive shaft of the collecting electrode knocking means 5.
Fig. 4 illustrates an embodiment of a frame 16 combining a plurality of discharge electrodes 3. The frame 16 is provided in the lower region with an indentation 19 in which the appropriate drive device for the collecting electrode knocking means 5 may be arranged. The result is an electric filter 1 having outer dimensions that are smaller than those of electric filters with conventional cleaning.
The present invention is of advantage in particular with smaller electric filters for biomass combustion in the output range of 0.3-3MW.
Claims (9)
1 Claims 1. An electric filter (1) for cleaning dust-laden waste gases (A), comprising a plurality of rows of grounded collecting electrodes (2) arranged in a housing, and discharge elec-trodes (3) arranged between the rows of the collecting electrodes (2) and being under negative high voltage, wherein knocking means (4, 5), each comprising at least one knocking member (6, 7) for periodically knocking the dust off the collecting electrodes (2) and the discharge elec-trodes (3), are assigned to the collecting electrodes (2) and the discharge electrodes (3), and wherein the collect-ing electrode knocking means (5) comprises a drive device for the at least one knocking member (6) of the collecting electrode knocking means (5), wherein the discharge elec-trode knocking means (4) is coupled with the drive device of the collecting electrode knocking means (5), so that the at least one knocking member (7) of the discharge electrode knocking means (4) is adapted to be actuated by the drive device of the collecting electrode knocking means (5), characterized in that the drive device of the collecting electrode knocking means (5) is coupled with the at least one knocking member (7) of the discharge electrode knocking means via at least one insulated actuator (14).
2. The electric filter (1) according to claim 1, characterized in that the drive device of the collecting electrode knock-ing means (5) comprises a drive shaft (13) connected with a drive motor (11) and a pertinent gear mechanism (12), at which drive shaft (13) the at least one knocking member (6) of the collecting electrode knocking means (5) is arranged.
3. The electric filter (1) according to claim 2, characterized in that each insulated actuator (14) is arranged at the drive shaft (13) of the collecting electrode knocking means (5) and is adapted to be taken along by the movement of the drive shaft (13) of the collecting electrode knocking means (5), and that the at least one knocking member (7) of the discharge electrode knocking means (4) is adapted to be ac-tuated via the actuator (14).
4. The electric filter (1) according to claim 3, characterized in that a position generator is arranged at the drive shaft (13) of the collecting electrode knocking means (5), so that the drive shaft (13) and each actuator (14) arranged thereon is adapted to be taken to a defined starting posi-tion after the completion of a cleaning process.
5. The electric filter (1) according to claims 3 or 4, charac-terized in that an entrainment device, for instance, a ro-tatably mounted roller (15), is arranged at the free end of each actuator (14), which is adapted to be rotated on con-tact with the at lest one knocking member (7) of the dis-charge electrode knocking means (4).
6. The electric filter (1) according to any of claims 1 to 5, characterized in that a plurality of collecting electrodes (2) are connected with each other, for instance, through a connector bar (18), wherein an anvil (8) for each knocking member (6) of the collecting electrode knocking means (5) is arranged at the combination of a plurality of collecting electrodes (2).
7. The electric filter (1) according to any of claims 1 to 6, characterized in that a plurality of discharge electrodes (3) are connected via at least one frame (16), and a plu-rality of discharge electrode frames (16) are connected with each other via at least one connector bar (17), wherein an anvil (9) for each knocking member (7) of the discharge electrode knocking means (4) is arranged on at least one discharge electrode frame (16) or at least one connector bar (17).
8. The electric filter (1) according to claim 7, characterized in that each discharge electrode frame (16) comprises an indentation (19) in the region of the discharge electrode knocking means (4).
9. The electric filter (1) according to claim 8, characterized in that the discharge electrode knocking means (4) is ar-ranged in the lower region of the discharge electrode frame (16), and the discharge electrode frames (16) are designed to converge in this lower region.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATGM386/2010 | 2010-06-18 | ||
| ATGM386/2010U AT13007U1 (en) | 2010-06-18 | 2010-06-18 | ELECTROFILTER FOR CLEANING DUST-LOADED EXHAUST GASES AND METHOD FOR CLEANING AN ELECTRIC FILTER |
| PCT/AT2011/000270 WO2011156830A2 (en) | 2010-06-18 | 2011-06-17 | Electrostatic precipitator for cleaning dust-laden exhaust gases |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2801786A1 true CA2801786A1 (en) | 2011-12-22 |
Family
ID=44508524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2801786A Abandoned CA2801786A1 (en) | 2010-06-18 | 2011-06-17 | Electrostatic precipitator for cleaning dust-laden exhaust gases |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2582463B1 (en) |
| AT (1) | AT13007U1 (en) |
| CA (1) | CA2801786A1 (en) |
| WO (1) | WO2011156830A2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11185871B2 (en) * | 2017-12-04 | 2021-11-30 | Exodraft a/s | Electrostatic precipitator system having a grid for collection of particles |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104275244A (en) * | 2014-10-29 | 2015-01-14 | 张家港宣化凯波环保科技有限公司 | Rapping driving device of electric precipitator cathode |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1600496A (en) * | 1923-11-28 | 1926-09-21 | Int Precipitation Co | Apparatus for electrical precipitation of suspended material from gases |
| DE447137C (en) * | 1925-03-31 | 1927-07-18 | Siemens Schuckertwerke G M B H | Shaking device for the electrodes of electrical gas cleaning systems |
| US1981455A (en) * | 1932-03-14 | 1934-11-20 | Int Precipitation Co | Electrical precipitator |
| DE1112499B (en) | 1959-11-04 | 1961-08-10 | Appbau Rothemuehle | Knocking device for electrostatic precipitators and operating procedures for it |
| DE1865538U (en) | 1962-07-06 | 1963-01-17 | Metallgesellschaft Ag | DEVICE FOR KNOCKING DOWN PRECIPITATION ELECTRODES IN THE ELECTRIC FILTER. |
| GB1149053A (en) * | 1965-12-14 | 1969-04-16 | Lodge Cottrell Ltd | Improvements in or relating to electro-precipitators |
| DE2055626A1 (en) * | 1970-11-12 | 1972-05-18 | Krupp Gmbh | Electrostatic insulator cleaning - using hammers to strike electrodes |
| US3920085A (en) * | 1974-11-11 | 1975-11-18 | Universal Oil Prod Co | Swing hammer rapping system for electrostatic precipitator |
| GB1578378A (en) * | 1978-04-26 | 1980-11-05 | Lodge Cottrell Ltd | Roller bearing for drop rod rapping |
| DE2839542C2 (en) * | 1978-09-12 | 1986-08-28 | Apparatebau Rothemühle Brandt + Kritzler GmbH, 5963 Wenden | Electrostatic precipitator |
| GB2047576A (en) * | 1979-04-12 | 1980-12-03 | Lodge Cottrell Ltd | Electro-precipitation |
| DE8031177U1 (en) * | 1980-11-22 | 1986-06-19 | Walther & Cie AG, 5000 Köln | Electrostatic precipitator |
| US4769049A (en) * | 1987-04-14 | 1988-09-06 | United Mcgill Corporation | Side rapping drag hammer apparatus for electrostatic precipitators |
| DE3837439A1 (en) | 1988-11-04 | 1990-05-10 | Sms Schwingungs Messung System | Process and apparatus for loosening dust and dirt particles in filter units |
| DK172419B1 (en) * | 1992-08-28 | 1998-06-08 | Fls Miljoe As | Suspension device and banking mechanism for electrodes in an electro filter |
| DE4322162C1 (en) * | 1993-07-03 | 1994-10-06 | Metallgesellschaft Ag | Device for transmitting torque to at least one hammer shaft arranged horizontally in an electrostatic separator |
| DE19728369A1 (en) | 1997-07-03 | 1999-01-07 | Wurz Dieter | Cleansing system for electro-filter precipitation electrodes |
| DE10124871C1 (en) | 2001-05-22 | 2002-10-10 | Hamon Rothemuehle Cottrell Gmb | Device used for removing particles from gas stream comprises plate-like passive electrode with surface for collecting particles, and operating unit interacting with electrode and producing low frequency oscillation |
| DE10300549A1 (en) | 2003-01-09 | 2004-07-22 | Riebel, Ulrich, Prof. Dr.-Ing. | System for cleaning exhaust gas flow by separation of dust/solid particles, has channel through precipitating electrode with discharge electrode to deliver short strong compressed air pulses to clear dust |
-
2010
- 2010-06-18 AT ATGM386/2010U patent/AT13007U1/en not_active IP Right Cessation
-
2011
- 2011-06-17 EP EP11743178.3A patent/EP2582463B1/en not_active Not-in-force
- 2011-06-17 WO PCT/AT2011/000270 patent/WO2011156830A2/en active Application Filing
- 2011-06-17 CA CA2801786A patent/CA2801786A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11185871B2 (en) * | 2017-12-04 | 2021-11-30 | Exodraft a/s | Electrostatic precipitator system having a grid for collection of particles |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011156830A2 (en) | 2011-12-22 |
| EP2582463A2 (en) | 2013-04-24 |
| EP2582463B1 (en) | 2013-09-04 |
| WO2011156830A3 (en) | 2012-05-03 |
| AT13007U1 (en) | 2013-03-15 |
| WO2011156830A8 (en) | 2012-10-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101610240B1 (en) | Bi-directional dust collection system | |
| JP5947598B2 (en) | Electric dust collector | |
| EP2424674B1 (en) | Electrostatic precipitator with collection belt | |
| KR100724556B1 (en) | Induction electrostatic precipitator | |
| US2490979A (en) | Electrostatic precipitator | |
| JPH0531399A (en) | Electric dust collector | |
| KR20110135899A (en) | Induction electrostatic precipitator using multi-cross pin ionizer | |
| KR101326875B1 (en) | Electrostatic precipitator and control method thereof | |
| CN107149987A (en) | A kind of band cleans the electrostatic precipitation component of anode and cathode | |
| CA2801786A1 (en) | Electrostatic precipitator for cleaning dust-laden exhaust gases | |
| JP2008036534A (en) | Electric dust collector | |
| CN101099944B (en) | Electrode component with self-cleaning function | |
| JP6317558B2 (en) | Electric dust collector | |
| CN105665138A (en) | Fan type electrostatic dust remover | |
| KR20150045069A (en) | Electrostatic precipitator with means for dedusting | |
| KR20110123542A (en) | Induction electrostatic precipitator using multi-cross pin ionizer | |
| KR101837972B1 (en) | A integral filtered dust collector device with the pre-charged function | |
| CN114832941A (en) | High-voltage high-frequency electrostatic dust collector system for conveying material, dust and flying dust of coal | |
| KR200410985Y1 (en) | Induction electrostatic precipitator | |
| JP4864255B2 (en) | Electric dust collector insulator damage prevention method | |
| CN101428249A (en) | Cathode ash-clearing structure of electric dust collector | |
| JPS63270560A (en) | Dust collector for packed bed | |
| CN221183196U (en) | Anti-adhesion electrostatic precipitator | |
| JPH04150961A (en) | Moving dust collecting electrode of electrical precipitator | |
| CN115069416B (en) | Electrostatic dust collector and air purifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |
Effective date: 20170619 |