CN203342944U - Asymmetrical partitioned electric dust collector - Google Patents
Asymmetrical partitioned electric dust collector Download PDFInfo
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- CN203342944U CN203342944U CN 201320427719 CN201320427719U CN203342944U CN 203342944 U CN203342944 U CN 203342944U CN 201320427719 CN201320427719 CN 201320427719 CN 201320427719 U CN201320427719 U CN 201320427719U CN 203342944 U CN203342944 U CN 203342944U
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Abstract
The utility model relates to an asymmetrical partitioned electric dust collector and solves the problems of the existing electric dust collector that discharge does not meet the standard, and a discharge effect is poor after transformation. When N is an odd number, dust collection area of a ((N+1)/2)th power supply region is maximum, and the dust collection area of the ((N+1)/2)th power supply region and the dust collection areas of front-end power supply regions and rear-end power supply regions are in descended distribution; when the N is an even number, the dust collection areas of a (N/2)th power supply region and a ((N/2)+1)th power supply region are maximum and the same, and the dust collection areas of the (N/2)th power supply region and the ((N/2)+1)th power supply region and the dust collection areas of front-end power supply regions and rear-end power supply regions are in the descended distribution. The asymmetrical partitioned electric dust collector is reasonable and reliable in structural design, a front electric field is divided into small regions, and the small regions are respectively powered, so that voltage and current of the front electric field can be greatly increased, dust collection efficiency of the front electric field is improved, and a foundation is laid for reducing total emission; a backward stage electric field is divided into small regions, a vibrating ash removal time sequence can be flexibly optimized, influence of secondary flying is reduced, and finally the dust collection efficiency is improved.
Description
Technical field
The utility model relates to electric dust collector, is specially a kind of asymmetrical subregion electric cleaner.
Background technology
At present, along with the environmental protection standard that country is new is put into effect, coal-burning power plant's dust emission limit value requires below 30mg/Nm3, and existing electric cleaner, due to not up to standard, faces technological transformation.The tradition reforming mode has the specific collection area of increasing, flue gas conditioning, replacing power supply, changes deashing pattern etc., and owing to lacking the corresponding theory support, transformation often has blindness, and correctional effect is not ideal.What have directly changes electricity bag or sack cleaner into, but through actual use in a few years, the sack cleaner following problem that comes out gradually: resistance is large, it is difficult etc. to change high, the useless bag of bag expense.
Summary of the invention
The utility model, in order to solve the existing electric cleaner discharge problem that exists emission effect poor of transforming not up to standard, provides a kind of asymmetrical subregion electric cleaner.
The utility model is to adopt following technical scheme to realize: asymmetrical subregion electric cleaner, the service area distributed before and after comprising N, N is natural number, when N is odd number, the dust-collecting area maximum of (N+1)/2 service area, and the distribution that all tapers off of the dust-collecting area of the dust-collecting area of (N+1)/2 service area and rear and front end service area; When N is even number, the dust-collecting area of N/2 service area and (N/2)+1 service area is maximum and identical, the distribution that all tapers off of the dust-collecting area of N/2 service area and (N/2)+1 service area and the dust-collecting area of rear and front end service area.
By up-to-date Electric Scrubber Efficiency empirical equation, relation in the electric field drawn in conjunction with experiment between breakdown voltage or maximum current and discharge electrode position, this bulk electric field of deduster is carried out to asymmetrical subregion, electric cleaner service area adopts asymmetrical subregion, improved Uniform discharge in electric precipitation, reduce anti-corona intensity, improve electric precipitation and effectively utilize space; By asymmetrical subregion, can realize optimizing rapping, reduce the impact of secondary fly-up; Finally, then coordinate corresponding power supply control technology, improve the electric field average field-strength, finally realize the significantly raising of efficiency of dust collection.
The dust-collecting area ratio of the service area of N from front to back is 1:1.3:1.5 ... 1.5:1.3:1, be that first equivalent increases progressively, rear equivalent is successively decreased distribution, make more than anterior voltage of electric field reaches 80KV, coordinate the strong cathode line of electric discharge, electric field strength is significantly improved, and greatly improve Uniform discharge in single electric field, electrical efficiency can reach more than 90%, a large amount of dust forwardly electric field are collected, thereby lay the foundation for reducing the outlet discharge.The rear class electric field is divided into little subregion, coordinates the cathode line of high discharge inception voltage, realizes high voltage low current, and can optimize flexibly the vibration dust-cleaning sequential, finally makes efficiency of dust collection reach more than 99.85%, below outlet discharge 30mg/Nm3.
The utility model reasonable in design is reliable, and anterior electric field is divided into to community, and power supply separately, can significantly improve the electric current and voltage of anterior electric field, thereby improve the dust-collecting efficiency of anterior electric field, for lowering total discharge, lays the foundation; The rear class electric field is divided into little subregion, can optimize flexibly the vibration dust-cleaning sequential, reduces the impact of secondary fly-up, finally improves efficiency of dust collection.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-service area.
The specific embodiment
Asymmetrical subregion electric cleaner, the service area 1 distributed before and after comprising N, N is natural number, when N is odd number, the dust-collecting area maximum of (N+1)/2 service area 1, and the distribution that all tapers off of the dust-collecting area of the dust-collecting area of (N+1)/2 service area 1 and rear and front end service area 1; When N is even number, the dust-collecting area of N/2 service area 1 and (N/2)+1 service area 1 is maximum and identical, the distribution that all tapers off of the dust-collecting area of N/2 service area 1 and (N/2)+1 service area 1 and the dust-collecting area of rear and front end service area 1.
The dust-collecting area ratio of the service area of N from front to back 1 is 1:1.3:1.5 ... 1.5:1.3:1, be that first equivalent increases progressively, rear equivalent is successively decreased distribution.
In specific implementation process, the supporting multi-form cathode line of each service area 1, equipping rules is that anterior electric field cathode line discharge inception voltage is low, and electric discharge is strong, and rear class electric field cathode line discharge inception voltage is high, and electric discharge is evenly.
More than supporting supply voltage grade must be able to reach 82KV, and crest voltage and average voltage approach.
Electric cleaner is six service areas 1, and six service areas 1 from left to right the ratio of dust-collecting area be 1:1.3:1.5:1.5:1.3:1, by configuring corresponding high voltage source, make concentration of emission be reduced to 25 mg/Nm3.
Up-to-date Electric Scrubber Efficiency empirical equation is the emission request for 10-30mg/Nm3, and the empirical data of chamber research and Practical Project is by experiment summed up electric cleaner index type selecting effectiveness formula out:
Wherein
,
,
be defined as the electric precipitation index, other parameters are as follows:
,
: power plant's operating mode and particle radius related experiment coefficient;
Above-mentioned defined electric precipitation exponential size, in fact reflected the static energy storage of unit flue gas in electric cleaner, and the larger efficiency of dust collection of energy storage is higher; Above-mentioned efficiency of dust collection rule is adapted to conventional single phase poaer supply, intermediate frequency power supply, high frequency electric source, three phase mains, 3 electric fields, 4 electric fields and 5 electric-field dust collectors.
Modification Experience according to us to more than 50 125-600MW coal-burning power plant electric precipitations, propose to realize the following discharge of 30mg/Nm3, and 400mm is with the applied electric field intensity of the electric cleaner of pole span and meet following condition than specific collection area or electric precipitation index:
Under electric precipitation index and discharge theory, ash amount in the discharge of electric precipitation and the voltage of operation or electric-field intensity, coal and the ratio specific collection area of electric precipitation are relevant, the advance of power technology is to be reflected under identical deduster body and fire coal, the maximization of electric precipitation index.
Claims (2)
1. an asymmetrical subregion electric cleaner, the service area (1) distributed before and after comprising N, N is natural number, it is characterized in that: when N is odd number, the dust-collecting area maximum of (N+1)/2 service area (1), and the distribution that all tapers off of the dust-collecting area of the dust-collecting area of (N+1)/2 service area (1) and rear and front end service area (1); When N is even number, the dust-collecting area of N/2 service area (1) and (N/2)+1 service area (1) is maximum and identical, the distribution that all tapers off of the dust-collecting area of N/2 service area (1) and (N/2)+1 service area (1) and the dust-collecting area of rear and front end service area (1).
2. asymmetrical subregion electric cleaner according to claim 1, it is characterized in that: the dust-collecting area ratio of the service area of N from front to back (1) is 1:1.3:1.5 ... 1.5:1.3:1, be that first equivalent increases progressively, rear equivalent is successively decreased distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320427719 CN203342944U (en) | 2013-07-18 | 2013-07-18 | Asymmetrical partitioned electric dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320427719 CN203342944U (en) | 2013-07-18 | 2013-07-18 | Asymmetrical partitioned electric dust collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203342944U true CN203342944U (en) | 2013-12-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320427719 Expired - Fee Related CN203342944U (en) | 2013-07-18 | 2013-07-18 | Asymmetrical partitioned electric dust collector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464286A (en) * | 2013-07-18 | 2013-12-25 | 中国能源建设集团山西省电力环保设备总厂 | Asymmetrically-partitioned electric dust remover |
-
2013
- 2013-07-18 CN CN 201320427719 patent/CN203342944U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464286A (en) * | 2013-07-18 | 2013-12-25 | 中国能源建设集团山西省电力环保设备总厂 | Asymmetrically-partitioned electric dust remover |
| CN103464286B (en) * | 2013-07-18 | 2016-03-23 | 山西省电力环保设备工程有限公司 | Asymmetrically-partielectric electric dust remover |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 Termination date: 20160718 |