CN201227601Y - Electric precipitation system applied to desulphurization system without by-pass - Google Patents
Electric precipitation system applied to desulphurization system without by-pass Download PDFInfo
- Publication number
- CN201227601Y CN201227601Y CNU200820108618XU CN200820108618U CN201227601Y CN 201227601 Y CN201227601 Y CN 201227601Y CN U200820108618X U CNU200820108618X U CN U200820108618XU CN 200820108618 U CN200820108618 U CN 200820108618U CN 201227601 Y CN201227601 Y CN 201227601Y
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- Prior art keywords
- electric
- electric field
- power supply
- dust removing
- bypass
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- 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.)
- Expired - Lifetime
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- 238000001556 precipitation Methods 0.000 title claims description 31
- 230000005684 electric field Effects 0.000 claims abstract description 118
- 239000000428 dust Substances 0.000 claims abstract description 44
- 238000009434 installation Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 abstract description 13
- 238000010586 diagram Methods 0.000 description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000013316 zoning Methods 0.000 description 1
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Abstract
The utility model relates to an electric dedusting system used for an unbypassed desulphurization system, which comprises two power sources mutually independent, a plurality of power supply devices and a plurality of electric dedusting chambers; each electric dedusting chamber comprises a plurality of channels, and each channel is divided into a plurality of electric fields; each electric field comprises a dust collecting plate and corona discharge electrodes which are respectively connected with the power sources through the power supply devices, and each power source provides electricity for at least two electric fields in the same channel so as to avoid unit outage due to the failure of a power supply bus section.
Description
Technical field
The utility model relates to a kind of no bypass desulphurization system of coal-burning power plant, particularly a kind of electric dust removing system that is used to not have the bypass desulphurization system.
Background technology
As shown in Figure 1, the characteristics of the no bypass desulphurization system of coal-burning power plant are not to be provided with flue bypass, flue gas heat exchange device and booster fan.When unit operation, the flue gas that boiler 1 produces passes electric precipitation chamber 2, through after the dust removal process, enters absorption tower 3 desulfurization of desulphurization system, directly enters atmosphere via circulating water cooling tower 4 again.The no bypass desulphurization system of this kind has guaranteed the complete desulfurization of the flue gas that unit produces from structure.
The operation principle of electric cleaner is as follows: contain the gas of dust granules, between the positive plate of negative electrode (claiming corona discharge electrode again) by being connected to high-voltage DC power supply and ground connection during formed high voltage electric field, owing to negative electrode generation corona discharge is ionized.At this moment, under the effect of electric field force, the face south pole plate motion of electronegative gas ion, and collide with dust granules at the volley, make grit electronegative.Grit after charged under the effect of electric field force, also anode motion, arrive anode after, emit with electronics, grit then is deposited on the positive plate, the gas that is purified then is discharged from deduster.
Structurally, electric cleaner inside is called as the chamber by the channel space of the air-flow that housing surrounded, and general electric cleaner is designed to single chamber, also two single chambers is connected in parallel sometimes, is called two chambers electric cleaner.With each chamber zoning, there are complete dust collection plate and corona discharge electrode in each district along the air current flow direction, and is equipped with corresponding one group of electric supply installation, claims that each independent zones is a dust collection electric field.Electric supply installation generally includes step-up transformer and rectifier.Step-up transformer is that power frequency 380V or 220V alternating voltage are raised to the required high voltage of deduster, and operating voltage is 50-60kV usually.Rectifier becomes direct current with High Level AC Voltage, all adopts the semiconductor silicon rectifier at present.
As shown in Figure 2, suppose of the design of the electric dust removing system of no bypass desulphurization system of the prior art for two chambers five electric field four-ways.That is, electric dust removing system is divided into two electric precipitation chambers 5, and there are two passages 6 each electric precipitation chamber.Each passage 6 is divided into five districts along the air current flow direction: there are complete dust collection plate and corona discharge electrode in each district, and is equipped with corresponding one group of step-up transformer 7 and rectifier 8, claims each independently to distinguish and is electric field 9.
Owing to there is not bypass, so desulphurization system and unit air and flue system just become indivisible one.During boiler operatiopn, when one section bus breaks down, electric dust removing system will have two passages of same electric precipitation chamber out of service because of dead electricity.Unit will be owing to desulphurization system former thereby tripping operation, cause the unplanned stoppage in transit of unit.And according to the restriction of the actual conditions of electric field in the electric dust removing system, the indoor need of same electric precipitation have two and plural electric field to move simultaneously, just can guarantee not have bypass desulphurization system operate as normal.
For the problems referred to above, the method that also can adopt the multichannel different electrical power to power simultaneously solves, and is unit with the electric precipitation electric field for example, and each electric field connects one road power supply or per two electric fields connect one road power supply etc., but cost increases too much relatively.
The utility model content
The purpose of this utility model is to provide a kind of electric dust removing system that is used to not have the bypass desulphurization system, can avoid causing unit outage because of the fault of one section power supply buses.
For this reason, the utility model proposes a kind of electric dust removing system that is used to not have the bypass desulphurization system, described electric dust removing system comprises two separate power supplys, a plurality of electric supply installation and a plurality of electric precipitations chamber, described each electric precipitation chamber comprises a plurality of passages, described each passage is divided into a plurality of electric fields, described each electric field comprises dust collection plate and corona discharge electrode, and described corona discharge electrode is connected with power supply by electric supply installation, and each power supply is at least two electric field power supplies in the same passage.
Preferably, one road power supply is preceding two electric fields power supply in the same passage, and another road power supply is all the other the electric field power supplies in the same passage.
Preferably, two power supplys alternately are a plurality of electric field power supplies in the same electric precipitation chamber.
Preferably, described electric supply installation comprises step-up transformer and rectifier.
Preferably, described electric dust removing system comprises two electric precipitation chambers.
Preferably, described each electric precipitation chamber comprises two passages.
Preferably, described each passage is divided into five electric fields.
Usefulness of the present utility model is, only needs each high voltage control cabinet outlet cable of change just can avoid the whole dead electricity of electric field of at least one electric precipitation chamber that the fault owing to a certain power supply passage causes, and then avoids causing the unplanned stoppage in transit of unit.
Description of drawings
In order to understand the utility model better, with reference to the following drawings:
Fig. 1 shows the schematic diagram of no bypass desulphurization system;
Fig. 2 shows the schematic diagram of electric dust removing system of the prior art;
Fig. 3 shows the schematic diagram of the electric dust removing system of an embodiment of the present utility model;
Fig. 4 shows the schematic diagram of the electric dust removing system of another embodiment of the present utility model;
Fig. 5 shows the schematic diagram of the electric dust removing system of another embodiment of the present utility model;
Operation electric field schematic diagram when Fig. 6 shows the power supply 3B dead electricity of the electric dust removing system among Fig. 5; And
Operation electric field schematic diagram when Fig. 7 shows the power supply 3A dead electricity of the electric dust removing system among Fig. 5.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is elaborated.
As shown in Figure 3, in an embodiment of the present utility model, electric dust removing system is divided into two electric precipitation chambers 15, and there are two passages 16 each electric precipitation chamber.Each passage 16 is divided into five districts along the air current flow direction: there are complete dust collection plate and corona discharge electrode in each district, and is equipped with corresponding one group of step-up transformer 17 and rectifier 18, claims each independently to distinguish and is electric field.Electric field is pressed passage order and airflow direction serial number.One road power supply 1A is two electric fields in the same passage, be electric field 111, electric field 112, electric field 122, electric field 123, electric field 133, electric field 134, electric field 144 and electric field 145 power supplies, another road power supply 1B is remaining electric field in the same passage, i.e. electric field 113, electric field 114, electric field 115, electric field 121, electric field 124, electric field 125, electric field 131, electric field 132, electric field 135, electric field 141, electric field 142 and electric field 143 power supplies.
When the power supply operate as normal, all electric fields all can normally move.When a certain power supply dead electricity, have at least two or more electric fields to keep operation, avoid fault because of a certain power supply, cause the whole dead electricity of electric field of at least one electric precipitation chamber and cause the unplanned stoppage in transit of unit.
As shown in Figure 4, in another embodiment of the present utility model, electric dust removing system is divided into two electric precipitation chambers 25, and there are two passages 26 each electric precipitation chamber.Each passage 26 is divided into five districts along the air current flow direction: there are complete dust collection plate and corona discharge electrode in each district, and is equipped with corresponding one group of step-up transformer 27 and rectifier 28, claims each independently to distinguish and is electric field.Electric field is pressed passage order and airflow direction serial number.One road power supply 2A is preceding two electric fields in the same passage, be electric field 211, electric field 212, electric field 221, electric field 222, electric field 231, electric field 232, electric field 241 and electric field 242 power supplies, another road power supply 2B is remaining electric field in the same passage, i.e. electric field 213, electric field 214, electric field 215, electric field 223, electric field 224, electric field 225, electric field 233, electric field 234, electric field 235, electric field 243, electric field 244 and electric field 245 power supplies.
When the power supply operate as normal, all electric fields all can normally move.When a certain power supply dead electricity, have at least two or more electric fields to keep operation, avoid fault because of a certain power supply, cause the whole dead electricity of electric field of at least one electric precipitation chamber and cause the unplanned stoppage in transit of unit.And because the efficiency of dust collection of electric field of the porch in the same passage is the highest, therefore exit minimum make that the efficiency of dust collection of the electric field that power supply 2A, power supply 2B are loaded is also relatively average.
As shown in Figure 5, in another embodiment of the present utility model, electric dust removing system is divided into two electric precipitation chambers 35, and there are two passages 36 each electric precipitation chamber.Each passage 36 is divided into five districts along the air current flow direction: there are complete dust collection plate and corona discharge electrode in each district, and is equipped with corresponding one group of step-up transformer 37 and rectifier 38, claims each independently to distinguish and is electric field.Electric field is pressed passage order and airflow direction serial number.Electric field in the electric precipitation chamber alternately is connected with two separate power supply 3A, power supply 3B, that is, power supply 3A is electric field 311, electric field 313, electric field 315, electric field 322, electric field 324, electric field 331, electric field 333, electric field 335, electric field 342 and electric field 344 power supplies; Power supply 3B is electric field 312, electric field 314, electric field 321, electric field 323, electric field 325, electric field 332, electric field 334, electric field 341, electric field 343 and electric field 345 power supplies.
When the power supply operate as normal, all electric fields all can normally move.When power supply 3B dead electricity, the electric field of maintenance operation as shown in Figure 6.When power supply 3A dead electricity, the electric field of maintenance operation as shown in Figure 7.According to as can be known above-mentioned, when power supply 3A or power supply B3 dead electricity, same electric precipitation is indoor can to guarantee 2 electric fields operations at least, avoids the fault because of a certain power supply, causes the whole dead electricity of electric field of at least one electric precipitation chamber and causes the unplanned stoppage in transit of unit.And the efficiency of dust collection of the electric field that power supply 3A, power supply 3B are loaded is also average.
It will be appreciated by those skilled in the art that above-mentioned electric dust removing system is not limited only to the design of traditional two chambers five electric field four-ways, also can apply and comprising several electric precipitation chambers that the no bypass desulphurization system of several electric fields is arranged in each electric precipitation chamber.
The applicant discloses above preferred embodiment of the present utility model with illustrative purposes presented for purpose of illustration.For the selection of the foregoing description and description is for best example and the practical application thereof in the utility model product is provided, thereby makes those of ordinary skills can realize the utility model.On above-mentioned disclosed basis, those skilled in the art can make multiple modification or variation under the prerequisite that does not break away from the utility model design.
Claims (7)
1. electric dust removing system that is used to not have the bypass desulphurization system, it is characterized in that, described electric dust removing system comprises two separate power supplys, a plurality of electric supply installation and a plurality of electric precipitations chamber, described each electric precipitation chamber comprises a plurality of passages, described each passage is divided into a plurality of electric fields, described each electric field comprises dust collection plate and corona discharge electrode, and described corona discharge electrode is connected with power supply by electric supply installation, and each power supply is at least two electric field power supplies in the same passage.
2. the electric dust removing system that is used to not have the bypass desulphurization system according to claim 1 is characterized in that, one road power supply is preceding two electric fields power supply in the same passage, and another road power supply is all the other the electric field power supplies in the same passage.
3. the electric dust removing system that is used to not have the bypass desulphurization system according to claim 2 is characterized in that, two power supplys alternately are a plurality of electric field power supplies in the same electric precipitation chamber.
4. the electric dust removing system that is used to not have the bypass desulphurization system according to claim 1 is characterized in that described electric supply installation comprises step-up transformer and rectifier.
5. the electric dust removing system that is used to not have the bypass desulphurization system according to claim 1 is characterized in that, described electric dust removing system comprises two electric precipitation chambers.
6. the electric dust removing system that is used to not have the bypass desulphurization system according to claim 5 is characterized in that, described each electric precipitation chamber comprises two passages.
7. the electric dust removing system that is used to not have the bypass desulphurization system according to claim 6 is characterized in that, described each passage is divided into five electric fields.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820108618XU CN201227601Y (en) | 2008-06-02 | 2008-06-02 | Electric precipitation system applied to desulphurization system without by-pass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820108618XU CN201227601Y (en) | 2008-06-02 | 2008-06-02 | Electric precipitation system applied to desulphurization system without by-pass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201227601Y true CN201227601Y (en) | 2009-04-29 |
Family
ID=40632561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820108618XU Expired - Lifetime CN201227601Y (en) | 2008-06-02 | 2008-06-02 | Electric precipitation system applied to desulphurization system without by-pass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201227601Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105817333A (en) * | 2015-05-19 | 2016-08-03 | 南通诺亚居环保科技有限公司 | Static filtration system backup circuit and application thereof |
| EP3338894A1 (en) * | 2016-12-22 | 2018-06-27 | Valmet Technologies Oy | Method and arrangement |
-
2008
- 2008-06-02 CN CNU200820108618XU patent/CN201227601Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105817333A (en) * | 2015-05-19 | 2016-08-03 | 南通诺亚居环保科技有限公司 | Static filtration system backup circuit and application thereof |
| EP3338894A1 (en) * | 2016-12-22 | 2018-06-27 | Valmet Technologies Oy | Method and arrangement |
| US10751729B2 (en) | 2016-12-22 | 2020-08-25 | Valmet Technologies Oy | Electrostatic precipitor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090821 Address after: Beijing City, Dongcheng District No. 16 Andrew intercontinental building 4, zip code: 100011 Co-patentee after: Beijing Guohua Electric Power Co., Ltd. Patentee after: China Shenhua Energy Co Co-patentee after: Sanhe Power Generation Co., Ltd. Address before: Beijing City, Dongcheng District No. 16 Andrew intercontinental building 4, zip code: 100011 Patentee before: China Shenhua Energy Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20090429 |
|
| CX01 | Expiry of patent term |