CN204073662U - Ultra-clean discharge cyclone separator and coal-fired plant flue gas cleaning system - Google Patents
Ultra-clean discharge cyclone separator and coal-fired plant flue gas cleaning system Download PDFInfo
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- CN204073662U CN204073662U CN201420525561.9U CN201420525561U CN204073662U CN 204073662 U CN204073662 U CN 204073662U CN 201420525561 U CN201420525561 U CN 201420525561U CN 204073662 U CN204073662 U CN 204073662U
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- cyclone separator
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- clean discharge
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Abstract
The utility model discloses a kind of ultra-clean discharge cyclone separator, be arranged on the flue in Desulphurization for Coal-fired Power Plant tower downstream, comprise housing, helical blade and blowdown apparatus, housing is tubular structure, and housing is connected with described flue, and helical blade is fixed in housing, blowdown apparatus is arranged on the downstream of helical blade, blowdown apparatus is connected with housing, also comprises rotary and centrifugal demister, and rotary and centrifugal demister is arranged on the downstream of blowdown apparatus.The utility model design is ingenious, and structure is simple, cheap for manufacturing cost, is convenient to universal enforcement.And without the need to the energy of at substantial, and gas cleaning coal-burning power plant can discharged completely is to the requirement meeting PM<4.5mg/Nm3.
Description
Technical field
The utility model relates to the filed of flue gas purification of coal-burning power plant, particularly a kind of ultra-clean discharge cyclone separator and coal-fired plant flue gas cleaning system.
Background technology
Along with becoming increasingly conspicuous of China's problem of environmental pollution, especially haze weather brings day by day serious impact to the life of people and health, the discharge of pollutant must be reduced further, the fume emission of national environmental protection portion to coal fired power generation industry has put into effect more strict discharge standard, " fossil-fuel power plant atmospheric pollutant emission standard (GB 13223-2011) " regulation key area emission limit: PM≤20mg/Nm
3, SO
2≤ 30mg/Nm
3, NO
x≤ 100mg/Nm
3.
After the boiler combustion of current coal-fired power plant, ash-laden gas is out after electrostatic precipitation or bag-type dust, then washs through the water smoke of desulfurizing tower, and discharge capacity is still very high, have even up to 70mg/Nm
3above.Now, domesticly advance wet-esp, its power consumption is very large, accounts for the station service of 0.4%, separate unit water consumption 10 tons/time more than, through 1 year after, the problem that hardens of generation will affect the efficiency of dedusting simultaneously, and cost is very high.Therefore, improve the gas cleaning effect of coal-burning power plant, reduction coal-fired plant flue gas purification cost becomes problem demanding prompt solution.
Utility model content
The purpose of this utility model is, a kind of ultra-clean discharge cyclone separator and coal-fired plant flue gas cleaning system are provided, the utility model design is ingenious, low cost of manufacture, and dust removing effects can make coal-burning power plant's discharge flue gas meet the requirement of PM<4.5mg/Nm3 completely.And solve the emission problem of sulfuric acid rain and gypsum rain simultaneously.The granular material discharged standard that national environmental protection portion requires can be met completely.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of ultra-clean discharge cyclone separator, be arranged on the flue in Desulphurization for Coal-fired Power Plant tower downstream, comprise throughflow type cyclone blade separator and rotary and centrifugal demister, throughflow type cyclone blade separator comprises housing, helical blade and blowdown apparatus, housing is tubular structure, housing is connected with described flue, helical blade is fixed in housing, blowdown apparatus is arranged on the downstream of helical blade, blowdown apparatus is connected with housing, also comprise rotary and centrifugal demister, rotary and centrifugal demister is arranged on the downstream of blowdown apparatus.By arranging separator of the present utility model on the flue between the desulfurizing tower and chimney of coal-burning power plant, flue gas is through helical blade, flue gas helical rotation under the effect of helical blade, drop in flue gas and solid particle depart from its spiral helicine tracks under the influence of centrifugal force, the drop be separated and solid particle are collected by blowdown apparatus, and derive in housing.When flue gas is through rotary and centrifugal demister, rotary and centrifugal demister is separated the droplet in flue gas again, can according to operating mode need multiple helical blade, blowdown apparatus or rotary and centrifugal demister are set, to reach higher detergent power.Through reality test, adopt this separator can by flue gas 99.5% drop and solid particle separate from coal-fired plant flue gas.
In aforesaid ultra-clean discharge cyclone separator, blowdown apparatus is arranged on housing, blowdown apparatus comprises annular groove, ring baffle and dust arrester installation, annular groove is arranged on the downstream of helical blade, ring baffle cover ring connected in star, ring baffle is provided with blowdown sealing, and dust arrester installation is connected with annular groove.The length of blowdown sealing and width can be arbitrary.This separator drop out and solid particle clash into housing under the influence of centrifugal force, through blowdown sealing, solid particle and drop can enter in annular groove from blowdown sealing, then enter in dust arrester installation from annular groove, thus make drop and solid particle depart from the movement locus of flue gas thoroughly, prevent it from entering in the middle of air, to environment.
In aforesaid ultra-clean discharge cyclone separator, import and export tangential rotary layout on housing of blowdown sealing.
In aforesaid ultra-clean discharge cyclone separator, blowdown sealing is along the radial direction of housing.
In aforesaid ultra-clean discharge cyclone separator, rotary and centrifugal demister comprises shell, rotor and turning cylinder, rotor is arranged in the enclosure, rotor is installed on the rotating shaft, shell is provided with equally distributed mudhole, be provided with the dust chamber of annular with the housing of mudhole correspondence position, dust chamber is provided with blow-off pipe, and blow-off pipe is connected with dust chamber.When flue gas is through rotary and centrifugal demister, droplet in flue gas is attached on the rotor of rotary and centrifugal demister, rotor high-speed rotates, be attached to epitrochanterian droplet and got rid of place under the influence of centrifugal force, dust chamber is entered from mudhole, then be expelled to assigned address from dust chamber, thus the droplet in flue gas is separated from flue gas.
As another kind of embodiment, in aforesaid ultra-clean discharge cyclone separator, rotor is made up of multiple silk screens stacked or corrugated plating, and one end of turning cylinder is connected with drive unit.By arranging drive unit for rotor, the rotation that drive unit is rotor provides power, and rotor can high-speed rotation, and the droplet that rotor adheres to can throw away fast in mudhole, improves separative efficiency.
As another embodiment, in aforesaid ultra-clean discharge cyclone separator, rotor is spiral fan blades.Spiral fan blades can rotate without power set under the effect of flue gas, is similar to windmill, can reduce peripheral hardware and power consumption.
In aforesaid ultra-clean discharge cyclone separator, be provided with pipe between helical blade and rotary and centrifugal demister, one end of pipe is positioned at the downstream of helical blade, and the other end is positioned at the upstream of rotary and centrifugal demister.Pipe can be fixed in housing or in flue by support that is cross or rice font, and pipe is fixed on the centre of cross or rice font, and the assistance to improve schooling in backward areas of support is fixed on housing or flue.The effect of pipe is that flow rotation in housing is tended towards stability, and is convenient to droplet wherein and solid particle be separated under centrifugal effect.And can cleaning fluid be injected in one end of pipe thus reach the effect of cleaning rotary and centrifugal demister.
In aforesaid ultra-clean discharge cyclone separator, pipe and housing are coaxially arranged, and pipe is provided with plectane, and plectane covers the opening of pipe near rotary and centrifugal demister one end, and plectane is provided with equally distributed open-work.
The utility model additionally provides a kind of coal-fired plant flue gas cleaning system, comprise desulfurizing tower and chimney, be connected by flue between desulfurizing tower and chimney, also comprise above-described ultra-clean discharge cyclone separator, ultra-clean discharge cyclone separator is arranged in parallel in described flue.By parallel connection, the separative efficiency that multiple ultra-clean discharge cyclone separator can improve flue gas in coal-burning power plant under the prerequisite not reducing separating property is set.
The utility model additionally provides a kind of coal-fired plant flue gas cleaning system, comprise desulfurizing tower and chimney, be connected by flue between desulfurizing tower and chimney, also comprise above-described ultra-clean discharge cyclone separator, ultra-clean discharge cyclone separator is arranged in series in described flue.By series connection arrange multiple ultra-clean discharge cyclone separator can more thoroughly by coal-burning power plant produce flue gas in solid particle and drop separation out.
Compared with prior art, the utility model design is ingenious, and structure is simple, cheap for manufacturing cost, is convenient to universal enforcement.And between helical blade and rotary and centrifugal demister, pipe is set, pipe can make flow of flue gas in shell tend towards stability, there is the effect in steady whirlpool, and, washing agent can injected near the one end open place of helical blade, washing agent flows into the rotary and centrifugal demister in downstream, thus cleans the rotary and centrifugal demister of not easy cleaning, makes the performance of rotary and centrifugal demister more stable.And without the need to the energy of at substantial, and gas cleaning coal-burning power plant can discharged completely is to the requirement meeting PM<4.5mg/Nm3.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of the present utility model;
Fig. 2 is the sectional view of a kind of embodiment of blowdown apparatus;
Fig. 3 is the set-up mode schematic diagram of a kind of embodiment of blowdown sealing;
Fig. 4 is the set-up mode schematic diagram of the another kind of embodiment of blowdown sealing;
Fig. 5 is the structural representation of another kind of embodiment of the present utility model;
Fig. 6 is the set-up mode schematic diagram of another embodiment of blowdown sealing;
Fig. 7 is the structural representation of a kind of embodiment of pipe;
Fig. 8 is the set-up mode schematic diagram of a kind of embodiment of rotor;
Fig. 9 is the set-up mode schematic diagram of the another kind of embodiment of rotor;
Figure 10 is the set-up mode schematic diagram of another embodiment of rotor.
Reference numeral: 1-housing, 2-helical blade, 3-blowdown apparatus, 4-annular groove, 5-pipe, 6-rotary and centrifugal demister, 7-shell, 8-blowdown sealing, 9-plectane, 10-open-work, 13-ring baffle, 14-rotor, 15-turning cylinder, 16-dust chamber, 17-blow-off pipe, 18-dust arrester installation.
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Detailed description of the invention
Embodiment 1 of the present utility model: as shown in Figure 1, a kind of ultra-clean discharge cyclone separator, be arranged on the flue in Desulphurization for Coal-fired Power Plant tower downstream, comprise throughflow type cyclone blade separator and rotary and centrifugal demister 6, throughflow type cyclone blade separator comprises housing 1, helical blade 2 and blowdown apparatus 3, housing 1 is tubular structure, housing 1 is connected with described flue, helical blade 2 is fixed in housing 1, blowdown apparatus 3 is arranged on the downstream of helical blade 2, blowdown apparatus 3 is connected with housing 1, also comprise rotary and centrifugal demister 6, rotary and centrifugal demister 6 is arranged on the downstream of blowdown apparatus 3.In the present embodiment, housing 1 is cylindric.
As shown in Figure 2, blowdown apparatus 3 is arranged on housing 1, blowdown apparatus 3 comprises annular groove 4, ring baffle 13 and dust arrester installation 18, annular groove 4 is arranged on the downstream of helical blade 2, ring baffle 13 cover ring connected in star 4, ring baffle 13 is provided with blowdown sealing 8, and dust arrester installation 18 is connected with annular groove 4.
As shown in Figure 3, the import and export of blowdown sealing 8 tangential rotary layout on housing 1.Blowdown sealing 8 is not in the radial direction of housing or axis, but with radial or axially angled.Can also be arranged to be similar to blind shaped, as shown in Figure 4.
As shown in Figure 5, be provided with pipe 5 between helical blade 2 and rotary and centrifugal demister 6, one end of pipe 5 is positioned at the downstream of helical blade 2, and the other end is positioned at the upstream of rotary and centrifugal demister 6.
As shown in Figure 7, pipe 5 and housing 1 are coaxially arranged, and pipe 5 is provided with plectane 9, and plectane 9 covers the opening of pipe 5 near rotary and centrifugal demister 6 one end, and plectane 9 is provided with equally distributed open-work 10.
Embodiment 2: as shown in Figure 1, a kind of ultra-clean discharge cyclone separator, be arranged on the flue in Desulphurization for Coal-fired Power Plant tower downstream, comprise throughflow type cyclone blade separator and rotary and centrifugal demister 6, throughflow type cyclone blade separator comprises housing 1, helical blade 2 and blowdown apparatus 3, housing 1 is tubular structure, housing 1 is connected with described flue, helical blade 2 is fixed in housing 1, blowdown apparatus 3 is arranged on the downstream of helical blade 2, blowdown apparatus 3 is connected with housing 1, also comprise rotary and centrifugal demister 6, rotary and centrifugal demister 6 is arranged on the downstream of blowdown apparatus 3.The present embodiment middle shell 1 is square tubular.
As shown in Figure 2, blowdown apparatus 3 is arranged on housing 1, blowdown apparatus 3 comprises annular groove 4, ring baffle 13 and dust arrester installation 18, annular groove 4 is arranged on the downstream of helical blade 2, ring baffle 13 cover ring connected in star 4, ring baffle 13 is provided with blowdown sealing 8, and dust arrester installation 18 is connected with annular groove 4.
As shown in Figure 6, blowdown sealing 8 is along the radial direction of housing 1.
As shown in Figure 5, be provided with pipe 5 between helical blade 2 and rotary and centrifugal demister 6, one end of pipe 5 is positioned at the downstream of helical blade 2, and the other end is positioned at the upstream of rotary and centrifugal demister 6.
As shown in Figure 7, pipe 5 and housing 1 are coaxially arranged, and pipe 5 is provided with plectane 9, and plectane 9 covers the opening of pipe 5 near rotary and centrifugal demister 6 one end, and plectane 9 is provided with equally distributed open-work 10.
Embodiment 3: as shown in Figure 1, a kind of ultra-clean discharge cyclone separator, be arranged on the flue in Desulphurization for Coal-fired Power Plant tower downstream, comprise throughflow type cyclone blade separator and rotary and centrifugal demister 6, throughflow type cyclone blade separator comprises housing 1, helical blade 2 and blowdown apparatus 3, housing 1 is tubular structure, housing 1 is connected with described flue, helical blade 2 is fixed in housing 1, blowdown apparatus 3 is arranged on the downstream of helical blade 2, blowdown apparatus 3 is connected with housing 1, also comprise rotary and centrifugal demister 6, rotary and centrifugal demister 6 is arranged on the downstream of blowdown apparatus 3.The present embodiment middle shell 1 is polyhedron tubular.
As shown in Figure 5, rotary and centrifugal demister 6 comprises shell 7, rotor 14 and turning cylinder 15, rotor 14 is arranged in shell 7, rotor 14 is arranged on turning cylinder 15, shell 7 is provided with equally distributed mudhole, be provided with the dust chamber 16 of annular with the housing 1 of mudhole correspondence position, dust chamber 16 is provided with blow-off pipe 17, and blow-off pipe 17 is connected with dust chamber 16.
Rotor 14 is made up of multiple silk screens stacked or corrugated plating, and one end of turning cylinder 15 is connected with drive unit.The rotor 14 of silk screen or corrugated plate shape can be parallel to turning cylinder 15, also can perpendicular to turning cylinder 15, as shown in Figure 8 and Figure 9.
As shown in Figure 5, be provided with pipe 5 between helical blade 2 and rotary and centrifugal demister 6, one end of pipe 5 is positioned at the downstream of helical blade 2, and the other end is positioned at the upstream of rotary and centrifugal demister 6.
As shown in Figure 7, pipe 5 and housing 1 are coaxially arranged, and pipe 5 is provided with plectane 9, and plectane 9 covers the opening of pipe 5 near rotary and centrifugal demister 6 one end, and plectane 9 is provided with equally distributed open-work 10.
Embodiment 4: as shown in Figure 1, a kind of ultra-clean discharge cyclone separator, be arranged on the flue in Desulphurization for Coal-fired Power Plant tower downstream, comprise throughflow type cyclone blade separator and rotary and centrifugal demister 6, throughflow type cyclone blade separator comprises housing 1, helical blade 2 and blowdown apparatus 3, housing 1 is tubular structure, housing 1 is connected with described flue, helical blade 2 is fixed in housing 1, blowdown apparatus 3 is arranged on the downstream of helical blade 2, blowdown apparatus 3 is connected with housing 1, also comprise rotary and centrifugal demister 6, rotary and centrifugal demister 6 is arranged on the downstream of blowdown apparatus 3.
As shown in Figure 5, rotary and centrifugal demister 6 comprises shell 7, rotor 14 and turning cylinder 15, rotor 14 is arranged in shell 7, rotor 14 is arranged on turning cylinder 15, shell 7 is provided with equally distributed mudhole, be provided with the dust chamber 16 of annular with the housing 1 of mudhole correspondence position, dust chamber 16 is provided with blow-off pipe 17, and blow-off pipe 17 is connected with dust chamber 16.
As shown in Figure 10, rotor 14 is spiral fan blades.
Be provided with pipe 5 between helical blade 2 and rotary and centrifugal demister 6, one end of pipe 5 is positioned at the downstream of helical blade 2, and the other end is positioned at the upstream of rotary and centrifugal demister 6.
As shown in Figure 7, pipe 5 and housing 1 are coaxially arranged, and pipe 5 is provided with plectane 9, and plectane 9 covers the opening of pipe 5 near rotary and centrifugal demister 6 one end, and plectane 9 is provided with equally distributed open-work 10.
The utility model additionally provides a kind of coal-fired plant flue gas cleaning system, comprise desulfurizing tower and chimney, be connected by flue between desulfurizing tower and chimney, also comprise the ultra-clean discharge cyclone separator described in above embodiment, ultra-clean discharge cyclone separator is arranged in parallel in described flue.By parallel connection, the separative efficiency that multiple ultra-clean discharge cyclone separator can improve flue gas in coal-burning power plant under the prerequisite not reducing separating property is set.
The utility model additionally provides a kind of coal-fired plant flue gas cleaning system, comprise desulfurizing tower and chimney, be connected by flue between desulfurizing tower and chimney, also comprise the ultra-clean discharge cyclone separator described in above embodiment, ultra-clean discharge cyclone separator is arranged in series in described flue.By series connection arrange multiple ultra-clean discharge cyclone separator can more thoroughly by coal-burning power plant produce flue gas in solid particle and drop separation out.
The operation principle of a kind of embodiment of the present utility model: the flue gas that coal-burning power plant produces enters in flue from upstream device, when through helical blade 2, solid particle under helical blade 2 acts in flue gas and drop carry out rotate-stationary mode, its radius of turn increases until collide the inwall of housing 1 gradually under the influence of centrifugal force, after the inwall of the solid particle in flue gas and drop and housing 1 collides, solid particle and drop depart from the motion path of flue gas, thus it is separated from flue gas, when the solid particle be separated and drop are through blowdown sealing 8, solid particle and drop enter in dust arrester installation 18 from blowdown sealing 8.By the flue gas of preliminary purification when the rotary and centrifugal demister 6 in downstream, the droplet in it is separated under the effect of rotary and centrifugal demister 6, thus the flue gas that coal-burning power plant is discharged meets the discharge standard of national relevant regulatory requirements.
Claims (11)
1. a ultra-clean discharge cyclone separator, be arranged on the flue in Desulphurization for Coal-fired Power Plant tower downstream, it is characterized in that, comprise throughflow type cyclone blade separator and rotary and centrifugal demister (6), throughflow type cyclone blade separator comprises housing (1), helical blade (2) and blowdown apparatus (3), housing (1) is tubular structure, housing (1) is connected with described flue, helical blade (2) is fixed in housing (1), blowdown apparatus (3) is arranged on the downstream of helical blade (2), blowdown apparatus (3) is connected with housing (1), also comprise rotary and centrifugal demister (6), rotary and centrifugal demister (6) is arranged on the downstream of blowdown apparatus (3).
2. ultra-clean discharge cyclone separator according to claim 1, it is characterized in that, blowdown apparatus (3) is arranged on housing (1), blowdown apparatus (3) comprises annular groove (4), ring baffle (13) and dust arrester installation (18), annular groove (4) is arranged on the downstream of helical blade (2), ring baffle (13) cover ring connected in star (4), ring baffle (13) is provided with blowdown sealing (8), and dust arrester installation (18) is connected with annular groove (4).
3. ultra-clean discharge cyclone separator according to claim 2, is characterized in that, the import and export of blowdown sealing (8) are in the upper tangential rotary layout of housing (1).
4. ultra-clean discharge cyclone separator according to claim 2, is characterized in that, blowdown sealing (8) is along the radial direction of housing (1).
5. ultra-clean discharge cyclone separator according to claim 1 and 2, it is characterized in that, rotary and centrifugal demister (6) comprises shell (7), rotor (14) and turning cylinder (15), rotor (14) is arranged in shell (7), rotor (14) is arranged on turning cylinder (15), shell (7) is provided with equally distributed mudhole, the dust chamber (16) of annular is provided with the housing (1) of mudhole correspondence position, dust chamber (16) is provided with blow-off pipe (17), blow-off pipe (17) is connected with dust chamber (16).
6. ultra-clean discharge cyclone separator according to claim 5, is characterized in that, rotor (14) is made up of multiple silk screens stacked or corrugated plating, and one end of turning cylinder (15) is connected with drive unit.
7. ultra-clean discharge cyclone separator according to claim 5, is characterized in that, rotor (14) is spiral fan blades.
8. ultra-clean discharge cyclone separator according to claim 1, it is characterized in that, pipe (5) is provided with between helical blade (2) and rotary and centrifugal demister (6), one end of pipe (5) is positioned at the downstream of helical blade (2), and the other end is positioned at the upstream of rotary and centrifugal demister (6).
9. ultra-clean discharge cyclone separator according to claim 8, it is characterized in that, pipe (5) and housing (1) are coaxially arranged, pipe (5) is provided with plectane (9), plectane (9) covers the opening of pipe (5) near rotary and centrifugal demister (6) one end, and plectane (9) is provided with equally distributed open-work (10).
10. a coal-fired plant flue gas cleaning system, comprise desulfurizing tower and chimney, be connected by flue between desulfurizing tower and chimney, it is characterized in that, also comprise the ultra-clean discharge cyclone separator described in above any one of claim 1 to 9, ultra-clean discharge cyclone separator is arranged in parallel in described flue.
11. 1 kinds of coal-fired plant flue gas cleaning systems, comprise desulfurizing tower and chimney, be connected by flue between desulfurizing tower and chimney, it is characterized in that, also comprise the ultra-clean discharge cyclone separator described in above any one of claim 1 to 9, ultra-clean discharge cyclone separator is arranged in series in described flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420525561.9U CN204073662U (en) | 2014-09-12 | 2014-09-12 | Ultra-clean discharge cyclone separator and coal-fired plant flue gas cleaning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420525561.9U CN204073662U (en) | 2014-09-12 | 2014-09-12 | Ultra-clean discharge cyclone separator and coal-fired plant flue gas cleaning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204073662U true CN204073662U (en) | 2015-01-07 |
Family
ID=52166430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420525561.9U Withdrawn - After Issue CN204073662U (en) | 2014-09-12 | 2014-09-12 | Ultra-clean discharge cyclone separator and coal-fired plant flue gas cleaning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204073662U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104289044A (en) * | 2014-09-12 | 2015-01-21 | 彭维明 | Cyclone separating device with super-clean emission and smoke purification system of coal-fired power plant |
| CN105854428A (en) * | 2016-05-26 | 2016-08-17 | 北京龙腾华创环境能源技术有限公司 | Multistage spiral-flow type ultra-clean dust removal device |
| CN106964224A (en) * | 2017-01-24 | 2017-07-21 | 北京利德衡环保工程有限公司 | A kind of dedusting demister and its water circulation system |
-
2014
- 2014-09-12 CN CN201420525561.9U patent/CN204073662U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104289044A (en) * | 2014-09-12 | 2015-01-21 | 彭维明 | Cyclone separating device with super-clean emission and smoke purification system of coal-fired power plant |
| CN105854428A (en) * | 2016-05-26 | 2016-08-17 | 北京龙腾华创环境能源技术有限公司 | Multistage spiral-flow type ultra-clean dust removal device |
| CN106964224A (en) * | 2017-01-24 | 2017-07-21 | 北京利德衡环保工程有限公司 | A kind of dedusting demister and its water circulation system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150107 Effective date of abandoning: 20170412 |
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| AV01 | Patent right actively abandoned |