CN105062572A - Dry method vertical electric dust remover for coal gas - Google Patents
Dry method vertical electric dust remover for coal gas Download PDFInfo
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- CN105062572A CN105062572A CN201510464148.5A CN201510464148A CN105062572A CN 105062572 A CN105062572 A CN 105062572A CN 201510464148 A CN201510464148 A CN 201510464148A CN 105062572 A CN105062572 A CN 105062572A
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- metal screen
- dry method
- vertical electric
- coal gas
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Abstract
The invention provides a dry method vertical electric dust remover for coal gas. The dry method vertical electric dust remover comprises a dust remover body, the bottom of the dust remover body is provided with an air inlet, the bottom of the dust remover body is provided with a ring of an annular flow guiding tube and a plurality of metal filter screen filters, the annular flow guiding tube is connected with the air inlet, two transverse ports of the metal filter screen filters are connected with the annular flow guiding tube, and gas to be dedusted goes through the air inlet and the annular flow guiding tube, enters the metal filter screen filters, and flows through side surface filter screens of the metal filter screen filters. Most of the gas flows through the side surface filter screens of the metal filter screen filters, and grids of the filter screens are dense, so pressures in the channels of all the filter screens are basically similar to each other, thereby uniform flow-out of airflow and coarse dust removal are realized, uniform distribution of airflow is realized, and the dust removal efficiency is improved.
Description
Technical field
The present invention relates to industrial gas dedusting technology field, be specifically related to a kind of coal gas dry method vertical electric precipitator.
Background technology
High voltage electrostatic dust precipitator is one of major equipment of hot industry exhaust gas dust improvement, and wherein vertical electric precipitator obtains again the accreditation of users because little, the defeated ash of its floor space is convenient.But the structure of vertical electric precipitator causes its import and export air-flow not in one direction, cause the uniform property of electric precipitator internal gas flow poor, extreme influence efficiency of dust collection.
Centrifugal vertical type dust-cleaning equipment common is on the market tubular type wet-esp at present, because its Inlet dust concentration is lower, and adopt wet dust removal mode, the problem that defeated ash is not smooth can not be produced, therefore bottom general vertical wet electrical dust precipitator, all airflow uniform distribution plate can be set, but for the larger dry method vertical electric precipitator of dust inlet concentration, directly airflow-distribution board be set in bottom, ash discharge can be caused not smooth, affect normal equipment and run.
Summary of the invention
The deficiencies in the prior art in view of the above, the object of the present invention is to provide one that dusty gas can be made evenly to flow out, and can carry out again the coal gas dry method vertical electric precipitator of thick dedusting, realize high-level efficiency dedusting.
For achieving the above object and other relevant objects, the invention provides a kind of coal gas dry method vertical electric precipitator, comprise fly-ash separator body, fly-ash separator body bottom portion is provided with blast inlet, described fly-ash separator body bottom portion is provided with a ring shape thrust-augmenting nozzle and multiple metal screen strainer, described annular thrust-augmenting nozzle is connected with blast inlet, the two-port of described metal screen strainer transverse direction is communicated with annular thrust-augmenting nozzle, until dedusting gas after blast inlet and annular thrust-augmenting nozzle enter metal screen strainer, the side filter screen through metal screen strainer flows through.
Adopt said structure, treat that dedusting gas enters metal screen strainer through blast inlet and annular thrust-augmenting nozzle by two-port, can all or overwhelming majority part flow through through the side filter screen of metal screen strainer, because screen mesh is closeer, pressure in each filter screen passage can be realized approximately, thus realize uniform stream and flow out and the thick dedusting completing dust, finally realize the uniform of air-flow.
As preferably: described metal screen filter bottom is provided with gap adjustment plate moving up and down, and described metal screen filter top is provided with ash damper.Removable differential gap adjustment plate is arranged at metal cloth filter bottom, by this gap adjustment plate, carries out deashing and gas flow optimized.
As preferably: described gap adjustment plate comprises a strut member and is arranged on the multiple adjustable plates corresponding with metal screen strainer on strut member, and adjustable plate upper end is reverse V-shaped, and gear is in metal screen strainer lower end.
As preferably: the angle on scarp, described adjustable plate upper end two is less than 60 °, and described ash damper is reverse V-shaped.Reverse V-shaped structure makes its not easily dust stratification, and is convenient to purge deashing.
As preferably: be provided with nitrogen injection system above described metal screen strainer, this nitrogen injection system has multiple nitrogen blowback nozzle, and described nitrogen blowback nozzle is between adjacent two metal screen strainers.For purging deashing.
As preferably: described annular thrust-augmenting nozzle encloses integral solder around fly-ash separator body one, this annular thrust-augmenting nozzle cross section is semicircle.
As preferably: on described annular thrust-augmenting nozzle and fly-ash separator body, correspondence offers ventage, and described metal screen strainer is arranged side by side, and the two-port of its transverse direction is communicated with ventage.Two-port air inlet simultaneously forms more uniform air-flow.
As preferably: described metal screen filter bottom is installed with baffle plate, and described metal screen filter top is provided with reverse V-shaped ash damper, is provided with high pressure nitrogen nozzle in described metal screen strainer.
During air-flow upper entering and lower leaving, 2 ~ 3 layers of airflow-distribution board are arranged on cylindrical shell top, and high pressure nitrogen nozzle is placed in metal screen, and metal screen filter bottom seals completely, also can realize current-sharing and dust removing effects.
As preferably: described fly-ash separator body upper part is also provided with positive plate, polar curve, rapping apparatus and high-voltage power apparatus, and fly-ash separator body top is provided with air outlet, and bottom is provided with ash silo.
The present invention, by the gap of adjustment metal cloth filter bottom pressure difference control board, makes most air-flow be passed through by the wire netting of side, realizes the airflow uniform distribution and the dust dedusting that enter anode volume; When pressure reduction is excessive, when needing deashing, control the gap of bottom pressure difference control board, open nitrogen purge system, make dust fall deashing.Air-flow evenly enters pole plate, carries out final dusting, finally realizes the discharge of clean flue gas.
As mentioned above, the invention has the beneficial effects as follows: metal screen strainer and annular draft tube structure are set, because screen mesh is closeer, pressure in each filter screen passage can be realized approximately, thus realize uniform stream and flow out and the thick dedusting completing dust, finally realize the uniform of air-flow.Can control gap length by differential gap adjustment plate moving up and down, gap reduces most air-flow is passed through by the wire netting of side, and gap increase coordinates with nitrogen injection system carries out ash discharge process.Improve the efficiency of dust collection of fly-ash separator entirety, easy to operate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the side-view of Fig. 1;
Fig. 3 is A direction view in Fig. 1;
Fig. 4 is the structural representation of metal screen strainer;
Fig. 5 is the scheme of installation of metal screen strainer and gap adjustment plate.
Piece mark explanation
1 blast inlet
2 gap adjustment plates
21 strut members
22 adjustable plates
3 annular thrust-augmenting nozzles
4 rapping apparatuss
5 positive plates
6 cathode rays
7 fly-ash separator bodies
8 high-voltage power apparatus
9 metal screen strainers
10 nitrogen injection systems
11 side filter screens
12 air outlets
13 ash silos
14 ash dampers
15 nitrogen blowback nozzles
Embodiment
By particular specific embodiment, embodiments of the present invention are described below, person skilled in the art scholar the content disclosed by this specification sheets can understand other advantages of the present invention and effect easily.
As shown in Figures 1 to 5, the invention provides a kind of coal gas dry method vertical electric precipitator, comprise fly-ash separator body 7, be provided with blast inlet 1 bottom fly-ash separator body 7, bottom is provided with ash silo 13, fly-ash separator body 7 top is also integrated with positive plate 5, polar curve, rapping apparatus 4 and high-voltage power apparatus 8, fly-ash separator body 7 top is provided with air outlet 12, and air flow line is as shown in the direction of arrow in figure.
Key is, fly-ash separator body 7 bottom outer wall is provided with a ring shape thrust-augmenting nozzle 3, and annular thrust-augmenting nozzle 3 is connected with blast inlet 1, and annular thrust-augmenting nozzle 3 encloses integral solder around fly-ash separator body 7 one, and this annular thrust-augmenting nozzle 3 cross section is semicircle.Be provided with multiple parallel and metal screen strainer 9 side by side in bottom fly-ash separator body 7, on annular thrust-augmenting nozzle 3 and fly-ash separator body 7, correspondence offers ventage, and metal screen strainer 9 is arranged side by side, and the two-port of its transverse direction is communicated with ventage.Also be provided with nitrogen injection system 10 above metal screen strainer 9, this nitrogen injection system 10 has multiple nitrogen blowback nozzle 15, and described nitrogen blowback nozzle 15 is between adjacent two metal screen strainers 9, and deashing is carried out in winding-up down.
Differential gap adjustment plate 2 moving up and down is provided with bottom described metal screen strainer 9, gap adjustment plate 2 comprises a strut member 21 and is arranged on multiple corresponding with metal screen strainer 9 adjustable plate 22 on strut member 21, adjustable plate 22 upper end is reverse V-shaped, and gear is in metal screen strainer 9 lower end.Gap adjustment plate 2 can pass through hydraulic pressure or air cylinder driven.In order to prevent dust stratification and facilitate ash disposal, the angle on scarp, adjustable plate upper end two is less than 60 °, and metal screen strainer 9 top is provided with reverse V-shaped ash damper 14.
In other embodiments, during air-flow upper entering and lower leaving, 2 ~ 3 layers of airflow-distribution board are arranged on cylindrical shell top, and high pressure nitrogen nozzle is placed in metal screen, seals completely bottom metal screen strainer 9, also can realize current-sharing and dust removing effects.
Principle of work of the present invention is as follows:
Introduced the band dust flue gas of flow velocity 10 ~ 20m/s by bottom air inlet mouth 1, be divided into two strands of air-flows and enter in annular thrust-augmenting nozzle 3, air-flow enters metal screen strainer 9 by annular thrust-augmenting nozzle 3.After flue gas enters metal screen strainer 9, can select to be flowed out by side filter screen 11 or bottom gap, by differential gap adjustment plate 2, the flue gas overwhelming majority containing dust is forced to flow through through the side filter screen 11 of metal screen strainer 9, realize dust and survey primary filter dedusting, efficiency of dust collection is determined according to the characteristic of wire netting.When flue gas is after process after a while, the lateral area of metal screen strainer 9 plays thicker dust layer, when dust thickness produces larger pressure difference, nitrogen injection system 10 above metal screen strainer 9 will be opened, after blowback is complete, gap tunes up by differential gap adjustment plate 2, and blowback dust falls into ash silo 13, thus realizes the deashing process of thick dedusting.
The flue gas of thick dedusting, enters pole plate after current-sharing, under the acting in conjunction of positive plate 5 and cathode rays 6, carries out final dusting, thus realize the high-effective dust-removing of flue gas to flue gas.When positive plate 5 and cathode rays 6 accumulate certain thickness dust layer, start rapping apparatus 4, realize vibration dust-cleaning.If be placed in whole dust-removal system, the blast inlet 1 of fly-ash separator, air outlet 12 can be closed, realize off-line rapping, avoid reentrainment of dust.
Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (9)
1. a coal gas dry method vertical electric precipitator, comprise fly-ash separator body, fly-ash separator body bottom portion is provided with blast inlet, it is characterized in that: described fly-ash separator body bottom portion is provided with a ring shape thrust-augmenting nozzle and multiple metal screen strainer, described annular thrust-augmenting nozzle is connected with blast inlet, the two-port of described metal screen strainer transverse direction is communicated with annular thrust-augmenting nozzle, flows through until the side filter screen of dedusting gas through metal screen strainer after blast inlet and annular thrust-augmenting nozzle enter metal screen strainer.
2. a kind of coal gas dry method vertical electric precipitator according to claim 1, it is characterized in that: described metal screen filter bottom is provided with gap adjustment plate moving up and down, described metal screen filter top is provided with ash damper.
3. a kind of coal gas dry method vertical electric precipitator according to claim 2, it is characterized in that: described gap adjustment plate comprises the strut member that a vertical direction can carry out displacement and the multiple adjustable plates corresponding with metal screen strainer be arranged on strut member, adjustable plate upper end is reverse V-shaped, and gear is in metal screen strainer lower end.
4. a kind of coal gas dry method vertical electric precipitator according to claim 3, is characterized in that: the angle on scarp, described adjustable plate upper end two is less than 60 °, and described ash damper is reverse V-shaped.
5. a kind of coal gas dry method vertical electric precipitator according to claim 2, it is characterized in that: above described metal screen strainer, be provided with nitrogen injection system, this nitrogen injection system has multiple nitrogen blowback nozzle, and described nitrogen blowback nozzle is between adjacent two metal screen strainers.
6. a kind of coal gas dry method vertical electric precipitator according to claim 1, is characterized in that: described annular thrust-augmenting nozzle encloses integral solder around fly-ash separator body one, and this annular thrust-augmenting nozzle cross section is semicircle.
7. a kind of coal gas dry method vertical electric precipitator according to claim 6, it is characterized in that: on described annular thrust-augmenting nozzle and fly-ash separator body, correspondence offers ventage, described metal screen strainer is arranged side by side, and the two-port of its transverse direction is communicated with ventage.
8. a kind of coal gas dry method vertical electric precipitator according to claim 1, it is characterized in that: described metal screen filter bottom is installed with baffle plate, described metal screen filter top is provided with reverse V-shaped ash damper, is provided with high pressure nitrogen nozzle in described metal screen strainer.
9. a kind of coal gas dry method vertical electric precipitator according to claim 1, it is characterized in that: described fly-ash separator body upper part is also provided with positive plate, polar curve, rapping apparatus and high-voltage power apparatus, fly-ash separator body top is provided with air outlet, and bottom is provided with ash silo.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510464148.5A CN105062572B (en) | 2015-07-31 | 2015-07-31 | A kind of coal gas dry method vertical electric precipitator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510464148.5A CN105062572B (en) | 2015-07-31 | 2015-07-31 | A kind of coal gas dry method vertical electric precipitator |
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| Publication Number | Publication Date |
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| CN105062572A true CN105062572A (en) | 2015-11-18 |
| CN105062572B CN105062572B (en) | 2018-09-25 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1037701A (en) * | 1950-06-21 | 1953-09-22 | Metallgesellschaft Ag | electro-filters with elements mounted in the raw gas inlet |
| DE2324659A1 (en) * | 1973-05-16 | 1974-12-05 | Elba Werk Maschinen Gmbh & Co | Wet electrostatic precipitator with tangential feed - has radial ducts from feed to ensure uniform distribution |
| CN1229688A (en) * | 1998-03-25 | 1999-09-29 | 韩国能源技术研究所 | High efficiency compact cybagfilter |
| CN203484007U (en) * | 2013-09-05 | 2014-03-19 | 无锡雪浪环境科技股份有限公司 | Intake air guiding device for bag type dust collector |
| CN204874428U (en) * | 2015-07-31 | 2015-12-16 | 中冶赛迪工程技术股份有限公司 | Vertical electrostatic precipitator of dry process for coal gas |
-
2015
- 2015-07-31 CN CN201510464148.5A patent/CN105062572B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1037701A (en) * | 1950-06-21 | 1953-09-22 | Metallgesellschaft Ag | electro-filters with elements mounted in the raw gas inlet |
| DE2324659A1 (en) * | 1973-05-16 | 1974-12-05 | Elba Werk Maschinen Gmbh & Co | Wet electrostatic precipitator with tangential feed - has radial ducts from feed to ensure uniform distribution |
| CN1229688A (en) * | 1998-03-25 | 1999-09-29 | 韩国能源技术研究所 | High efficiency compact cybagfilter |
| CN203484007U (en) * | 2013-09-05 | 2014-03-19 | 无锡雪浪环境科技股份有限公司 | Intake air guiding device for bag type dust collector |
| CN204874428U (en) * | 2015-07-31 | 2015-12-16 | 中冶赛迪工程技术股份有限公司 | Vertical electrostatic precipitator of dry process for coal gas |
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| Publication number | Publication date |
|---|---|
| CN105062572B (en) | 2018-09-25 |
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