CN106731430A - A kind of venturi bundled tube dedusting demister - Google Patents
A kind of venturi bundled tube dedusting demister Download PDFInfo
- Publication number
- CN106731430A CN106731430A CN201710219478.7A CN201710219478A CN106731430A CN 106731430 A CN106731430 A CN 106731430A CN 201710219478 A CN201710219478 A CN 201710219478A CN 106731430 A CN106731430 A CN 106731430A
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- venturi
- spray gun
- fluid spray
- tube
- centrifugal device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/40—Combinations of devices covered by groups B01D45/00 and B01D47/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separating Particles In Gases By Inertia (AREA)
Abstract
The present invention relates to flue gas ash removal demisting technical field, more particularly to a kind of venturi bundled tube dedusting demister, including Venturi tube, single-fluid spray gun, centrifugal device, expansion chamber and drain bar, Venturi tube bottom is arranged on the circular hole of drain bar, some single-fluid spray guns are provided with its lower end contraction section outer wall, its upper end is provided with centrifugal device, and centrifugal device top is provided with expansion chamber.Bottleneck by the way that single-fluid spray gun to be arranged on Venturi tube of the invention, the water smoke for spraying single-fluid spray gun becomes more tiny droplet by Venturi effect, the fine solid particle and gypsum droplet of (especially PM2.5) can be removed below 20 μm of particle diameter, so as to improve the effect of dedusting demisting, after dust-laden liquid is separated by centrifugal device, into enlarged cavity room, depart from the contact with upward gas, the reentrainment of gas-liquid is avoided, the effect of dedusting demisting is further increased.
Description
Technical field
The present invention relates to flue gas ash removal demisting technical field, more particularly to a kind of venturi bundled tube dedusting demister.
Background technology
At present, coal-fired plant flue gas pollutant minimum discharge relates generally to the discharge of NOx, SO2 and flue dust, and it is at this stage
Difficult point is how to realize high-effective dust-removing.China's Desulphurization for Coal-fired Power Plant technique generally uses Limestone-gypsum Wet Flue Gas Desulfurization Process technique,
Demister is installed and comes demisting and dedusting in desulfurizing tower top.At this stage, Treatment process route is cooperateed with to realize flue dust using flue gas
The minimum discharge of 5mg/Nm3 increasingly becomes main flow, and the technology path realizes that successfully key is exactly wet method for flue dust minimum discharge
Desulfurizing tower need to possess very strong collaboration dust collection capacity.Conventional one-level tubular type+three-level ridge type demister is mechanical demister,
It is that dust and droplet are removed based on inertial collision theory, its cut diameter is about 20 μm, to more than 20 μm of powder of particle diameter
Dirt and gypsum droplet removal efficiency are more than 99%, and relatively low to the dust and gypsum droplet removal efficiency below 20 μm of particle diameter, make
Unavoidably carry a large amount of fine solid particles and gypsum droplet in desulfurizing tower exiting flue gas, easily trigger chimney gypsum rain phenomenon.
Therefore, develop more efficient dedusting demister and just seem and be highly desirable to, and it is significant.
The content of the invention
Instant invention overcomes above-mentioned the deficiencies in the prior art, there is provided a kind of venturi bundled tube high-effective dust-removing demister.
Technical scheme：
A kind of venturi bundled tube dedusting demister, including Venturi tube, single-fluid spray gun, centrifugal device, expansion chamber
And drain bar；
The Venturi tube bottom is arranged on the circular hole of drain bar, and the spray of several single fluids is provided with its bottom outer wall
Rifle, is provided with centrifugal device in its upper inside wall, the Venturi tube upper end is provided with expansion chamber；
The expansion chamber is one section of pipeline with diameter greater than smoke pipe, and its lower end forms circular channels, its upper end with smoke pipe
It is connected with flue by chamfering.
Further, the shower nozzle of the single-fluid spray gun sets up, and shower nozzle is located at the bottleneck of Venturi tube.
Further, the atomizing particle size of the single-fluid spray gun is 100~200 μm.
Further, the centrifugal device 3 is made up of multiple centrifugal rotational flow pieces, and centrifugal rotational flow piece angle of inclination
Unanimously.
Further, the flow control of the Venturi tube bottleneck is in 20~30m/s.
Further, some rhones are provided with the drain bar.
Beneficial effects of the present invention are：
1) bottleneck by the way that single-fluid spray gun to be arranged on Venturi tube of the invention, the water smoke for spraying single-fluid spray gun
Become more tiny droplet by Venturi effect, can remove below 20 μm of particle diameter (especially PM2.5) fine solid particle and
Gypsum droplet, so as to improve the effect of dedusting demisting.
2) present invention is provided with expansion chamber, after dust-laden liquid is separated by centrifugal device, into enlarged cavity room, depart from
The contact of upward gas, it is to avoid the reentrainment of gas-liquid, while the liquid collected is through bottom drain holes discharge enlarged cavity the room in,
The liquid of enrichment be it also avoid by reentrainment, the effect of dedusting demisting is further increased.
Brief description of the drawings
Fig. 1 is a kind of venturi bundled tube dedusting demister structure chart；
Fig. 2 is a kind of layout drawing of venturi bundled tube dedusting demister in desulfurizing tower；
Fig. 3 is the A-A profiles in Fig. 2；
In figure：1- Venturi tubes；2- single-fluid spray guns；3- centrifugal devices；4- expands chamber；5- drain bars.
Specific embodiment
Below with reference to accompanying drawing, the present invention is described in detail：
With reference to shown in Fig. 1 to Fig. 3, a kind of venturi bundled tube dedusting demister disclosed in the present embodiment, including venturi
Pipe 1, single-fluid spray gun 2, centrifugal device 3, expansion chamber 4 and drain bar 5；
The bottom of Venturi tube 1 is arranged on the circular hole of drain bar 5, and several single-fluid spray guns are provided with its bottom outer wall
2, the water droplet of penetrating becomes more tiny droplet by Venturi effect, substantially increases the collision probability of water droplet and dust, more
Beneficial to the coalescence of fine dusts.
Centrifugal device 3 is provided with the upper inside wall of Venturi tube 1, through the dust-laden drop of coalescence by centrifugal device 3
Centrifugal action separated with flue gas.
The upper end of Venturi tube 1 is provided with expansion chamber 4, and the dust-laden liquid isolated through centrifugal device 3 falls into expansion chamber 4
It is interior, depart from the contact with upward gas, it is to avoid the reentrainment of gas-liquid, while expanding the liquid collected in chamber 4 through bottom
Osculum is discharged, and it also avoid the liquid of enrichment by reentrainment.
Expansion chamber 4 is one section of pipeline with diameter greater than smoke pipe, and its lower end forms circular channels with smoke pipe, and its upper end passes through
Chamfering is connected with flue.
Specifically, the shower nozzle of single-fluid spray gun 2 sets up, and shower nozzle is located at the bottleneck of Venturi tube 1.
Specifically, the atomizing particle size of single-fluid spray gun 2 is 100~200 μm.
Specifically, centrifugal device 3 is made up of multiple centrifugal rotational flow pieces, and the angle of inclination of centrifugal rotational flow piece is consistent.
Specifically, the flow control of the bottleneck of Venturi tube 1 is in 20~30m/s.
Specifically, some rhones are provided with drain bar 5, the dust-laden liquid discharged by Venturi tube 1 is pooled to
In the rhone of drain bar 5, drained into outside absorption tower through the drainpipe of rhone bottom.
The present invention is arranged on desulfurizing tower top, on top layer absorbent slurry spraying layer, the uniform cloth in absorption tower
Put, saturation wet flue gas enter Venturi tube 1 from below in desulfuration spray tower, single-fluid spray gun 2 is located at the necking down of Venturi tube 1
Place, in 20~30m/s, the atomizing particle size of spray gun is 100~200 μm to the flow control of bottleneck.
By Venturi effect, the water smoke of penetrating becomes more tiny droplet, substantially increases the collision of water droplet and dust
The coalescence of probability, more conducively fine dusts, the dust granules of dust and droplet coalescence Cheng Geng great in flue gas, afterwards
Separated by centrifugal device 3, centrifugal device 3 is made up of multiple centrifugal rotational flow pieces, centrifugal rotational flow piece is well-regulated to incline
Tiltedly set.
Separated with flue gas by the centrifugal action of centrifugal device 3 through the dust-laden drop of coalescence, fallen into centrifugation dress
Put in the expansion chamber 4 of 3 tops, depart from the contact with upward gas, it is to avoid the reentrainment of gas-liquid, dust-laden liquid is by expanding
Osculum in chamber 4 is discharged to outside Venturi tube, and the dust-laden liquid of discharge is pooled in the rhone of drain bar, through under rhone
The drainpipe in portion is drained into outside absorption tower, realizes efficient dedusting and demisting.
Above example is the exemplary illustration to this patent, does not limit its protection domain, people in the art
Member can also be changed to its part, as long as no the Spirit Essence beyond this patent, all in the protection domain of this patent.
Claims (6)
1. a kind of venturi bundled tube dedusting demister, it is characterised in that including Venturi tube (1), single-fluid spray gun (2), from
Center device (3), expansion chamber (4) and drain bar (5)；
Venturi tube (1) bottom is arranged on the circular hole of drain bar (5), and several single fluids are provided with its bottom outer wall
Spray gun (2), is provided with centrifugal device (3) in its upper inside wall, the upper end of the Venturi tube (1) is provided with expansion chamber (4)；
Expansion chamber (4) is one section of pipeline with diameter greater than smoke pipe, and its lower end forms circular channels, bottom of gullet with smoke pipe
Osculum is provided with, its upper end is connected by chamfering with flue.
2. a kind of venturi bundled tube dedusting demister according to claim 1, it is characterised in that the single-fluid spray gun
(2) shower nozzle sets up, and shower nozzle is located at the bottleneck of Venturi tube (1).
3. a kind of venturi bundled tube dedusting demister according to claim 2, it is characterised in that the single-fluid spray gun
(2) atomizing particle size is 100~200 μm.
4. a kind of venturi bundled tube dedusting demister according to claim 1, it is characterised in that the centrifugal device
(3) it is made up of multiple centrifugal rotational flow pieces, and the angle of inclination of centrifugal rotational flow piece is consistent.
5. a kind of venturi bundled tube dedusting demister according to claim 1, it is characterised in that the Venturi tube
(1) flow control of bottleneck is in 20~30m/s.
6. a kind of venturi bundled tube dedusting demister according to claim 1, it is characterised in that the drain bar (5)
On be provided with some rhones.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710219478.7A CN106731430A (en) | 2017-04-05 | 2017-04-05 | A kind of venturi bundled tube dedusting demister |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710219478.7A CN106731430A (en) | 2017-04-05 | 2017-04-05 | A kind of venturi bundled tube dedusting demister |
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| Publication Number | Publication Date |
|---|---|
| CN106731430A true CN106731430A (en) | 2017-05-31 |
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ID=58965532
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710219478.7A Pending CN106731430A (en) | 2017-04-05 | 2017-04-05 | A kind of venturi bundled tube dedusting demister |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108273207A (en) * | 2018-03-22 | 2018-07-13 | 兰州大学 | Novel breath purifying device and Novel respirator |
| CN110624369A (en) * | 2019-10-14 | 2019-12-31 | 杭州富阳松连食品有限公司 | Venturi tube applied to plate-type absorption tower |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1317348A (en) * | 1970-04-08 | 1973-05-16 | Charbonnages De France | Humid de-dusting device for gas-conveyor units |
| CN103111212A (en) * | 2013-02-04 | 2013-05-22 | 西安交通大学 | Multi-point introduction structure and flow control mode of venturi mixer |
| CN106341987B (en) * | 2009-12-31 | 2014-02-12 | 中国船舶重工集团公司第七一八研究所 | Venturi nozzle |
| CN204186658U (en) * | 2014-08-21 | 2015-03-04 | 山东鲁化天九化工有限公司 | A kind of venturi injection pipe applied in catalyst reactivation |
| CN205516900U (en) * | 2016-04-14 | 2016-08-31 | 北京青山绿野环保科技有限公司 | Whirlwind tubular vapour and liquid separator |
| CN206597424U (en) * | 2017-04-05 | 2017-10-31 | 哈尔滨锅炉厂环保工程技术有限公司 | A kind of venturi bundled tube dedusting demister |
-
2017
- 2017-04-05 CN CN201710219478.7A patent/CN106731430A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1317348A (en) * | 1970-04-08 | 1973-05-16 | Charbonnages De France | Humid de-dusting device for gas-conveyor units |
| CN106341987B (en) * | 2009-12-31 | 2014-02-12 | 中国船舶重工集团公司第七一八研究所 | Venturi nozzle |
| CN103111212A (en) * | 2013-02-04 | 2013-05-22 | 西安交通大学 | Multi-point introduction structure and flow control mode of venturi mixer |
| CN204186658U (en) * | 2014-08-21 | 2015-03-04 | 山东鲁化天九化工有限公司 | A kind of venturi injection pipe applied in catalyst reactivation |
| CN205516900U (en) * | 2016-04-14 | 2016-08-31 | 北京青山绿野环保科技有限公司 | Whirlwind tubular vapour and liquid separator |
| CN206597424U (en) * | 2017-04-05 | 2017-10-31 | 哈尔滨锅炉厂环保工程技术有限公司 | A kind of venturi bundled tube dedusting demister |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108273207A (en) * | 2018-03-22 | 2018-07-13 | 兰州大学 | Novel breath purifying device and Novel respirator |
| CN110624369A (en) * | 2019-10-14 | 2019-12-31 | 杭州富阳松连食品有限公司 | Venturi tube applied to plate-type absorption tower |
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