CN101791505A - Baffle type cyclone demister - Google Patents
Baffle type cyclone demister Download PDFInfo
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- CN101791505A CN101791505A CN201010018316A CN201010018316A CN101791505A CN 101791505 A CN101791505 A CN 101791505A CN 201010018316 A CN201010018316 A CN 201010018316A CN 201010018316 A CN201010018316 A CN 201010018316A CN 101791505 A CN101791505 A CN 101791505A
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Abstract
The invention provides a baffle type demisting device combining inertial separation and cyclone centrifugal separation and a method thereof. The method is as follows: the demisting device is designed as a two-level demister, and when airflow passes through a channel arranged between demisting blades of a first-level baffle on the base layer, mist drops impact the blades under the inertia effect due to flow line deflection, thereby realizing capture of large-diameter droplets. In addition, the outlet section of the baffle is arranged obliquely and faces one rotating direction, thereby achieving the functions of both demisting and diversion, so that the airflow can rise in a rotating way when passing through the first-level blades. The channel of a second-level demister is of deflection type in the vertical direction and is of a concentric ring shape in the horizontal direction, so that when rotating airflow passes through the demisting channel on the layer, smaller mist drops can be further removed under the combined effect of the baffle inertia separation and the rotating centrifugal separation, thereby making the whole demister achieve the effect of completely demisting.
Description
Technical field
The present invention relates to a kind of deflection plate inertial separation---the device and method of the compound demister of cyclone centrifugal separation, belong to the atmosphere polluting controling technology field.
Background technology
In industrial processes, demister is generally used for removing droplets entrained in the gas, reducing drop to the staining and corrode of gas channel and follow-up equipment, or prevent to contain droplet gas directly discharging atmospheric environment is polluted.Its basic operation principle is when the air-flow that has drop enters the demister passage, liquid drop movement direction and air motion direction are produced to be departed from, and it is struck on demister blade or other retention mass surface make it to be removed, thereby realize gas-liquid separation.
The device that is applied to gas-liquid separation at present mainly contains four kinds: gravity separator, screen separator, whizzer and deflection plate demister.Wherein, gravity separator is mainly used in and removes particle diameter greater than 150 microns drop; Screen separator is mainly used in that particle diameter is the separation of the drop of 5-7 micron in the low tolerance; Whizzer can produce the big 2000 times centrifugal force of force of gravity, can remove the drop that particle diameter is the 4-5 micron efficiently; The deflection plate demister is made up of a series of blades parallel with the smoke inlet direction, and being mainly used in and removing particle diameter is 10～100 microns drop.
In four types the demister, it is comparatively general that the deflection plate demister is used in industrial processes.Its main operation principle is to utilize air-flow to continuously change the flow direction in the passage between deflection plate, and drop separates from the air-flow streamline owing to the effect of self inertia power, and bump demist blade surface makes it to be removed.And,, utilize the deflection plate demister of inertia force deviation effect then can't effectively capture merely to existing in fact for the drop of minor diameter more because the deflection plate demister is applicable to that mainly removing particle diameter is 10～100 microns drop.
Summary of the invention
Technical problem; The present invention is directed to the deflection plate demister of single utilization inertia force deviation effect; it is difficult to small diameter drops is realized the effectively shortcoming of removal; a kind of deflection plate inertial separation---the device and method of the compound demister of cyclone centrifugal separation is provided; to reach the mist droplet in effective separation bubble; realization is to the protection of air channel and equipment, and the purpose of avoiding atmospheric environment to be polluted.
Technical scheme: device of the present invention mainly comprises the two-stage demister system: demisters at different levels are arranged by certain way by the deflection plate blade and are constituted.And the blade rinse-system, constitute by the flushing pipe and the shower nozzle that are arranged in demisters at different levels both sides.Device integral body is cylindric, and air-flow passes through demister from bottom to top.
Technical solutions according to the invention are: this demister integral body is cylindric, connect from bottom to top the secondary demister be set in inside, comprise first order demister, second level demister, every grade of demister is discoideus, and both sides are furnished with the high pressure washing water pipe about every grade of demister, pending air-flow is from bottom to top by the secondary demister, and the droplet in the air-flow obtains separating and removes, and gas is discharged by the demister top.
First order demister adopts folded plate type demist blade to be arranged in juxtaposition to each other, forms ring-type; Some groups of ring-shaped blade concentrics are positioned at the integral body that same plane group constitutes first order demist blade,
Second level demister adopts folded plate type demist blade equally, and the passage in the vertical direction is set to deflector type between blade; Be set to concentric ring-shaped in the horizontal direction.
Described high pressure washing water pipe connects the equally distributed Flushing nozzle of employing multiple spot, periodically washes the demist blade by shower nozzle, to avoid demister blade surface scale in the long-time running process, demist channel jam.
After containing the droplet air-flow and entering demister, by between the first order deflection plate demist blade of bottom during passage, utilize the inertia force deviation effect of droplet to make itself and flow separation by the bottom, impact blades subsequently, thus make larger-diameter drop obtain capturing.And the deflection plate outlet section is in tilted layout towards same direction of rotation, has played guide functions in demist, and air-flow is rising by rotation behind the first order blade.And second level demister passage 2 in the vertical directions are set to deflector type; Be set to concentric ring-shaped in the horizontal direction, so swirling eddy is when this layer demist passage, the compound action of utilizing the deflection plate inertial separation to separate with rotating centrifugal makes less droplet obtain further effectively removal.Gas after the processing is discharged by device top.
Beneficial effect: compared with prior art, the present invention has following characteristics:
1, this device has utilized deflection plate inertial separation principle and rotating centrifugal separation principle simultaneously, even under the compound action of two kinds of power, also can realize good capture effect for fine droplet, than traditional deflection plate demister, this device has greatly improved on demist efficient.
2, first order demister effectively utilize the water conservancy diversion principle of demist blade, when realizing the gas-liquid separator effect, reached the effect that forces the air-flow rotation.Than cyclone demister, saved setting to single effect deflector, make device integral body more simplify.
3, demisters at different levels all are arranged as tabular, and are highly lower, and institute takes up space little, can unite layout with miscellaneous equipment, save equipment construction cost.
Description of drawings
Fig. 1 is the overall structure schematic diagram of demister of the present invention.
Fig. 2 is the structural entity schematic diagram of first order demister of the present invention.
Fig. 3 is the structure partial detailed maps of first order demister of the present invention.
Fig. 4 is the structure vertical view of first order demister of the present invention.
Fig. 5 is the structure A-A face cutaway view (analysing and observe the zone as shown in Figure 4) of first order demister of the present invention.
Fig. 6 is the structural entity schematic diagram of the second level of the present invention demister.
Fig. 7 is the structure partial detailed maps of the second level of the present invention demister.
Fig. 8 is the structure vertical view of the second level of the present invention demister.
Fig. 9 is the structure B-B face cutaway view (analysing and observe the zone as shown in Figure 8) of the second level of the present invention demister.
Figure 10 is the structural representation of flusher of the present invention.
Have among the figure: first order demister 1, second level demister 2, high pressure washing water pipe 3, folded plate type demist blade 4, Flushing nozzle 5.
The specific embodiment
This demister integral body is cylindric, connect from bottom to top the secondary demister be set in inside, comprise first order demister 1, second level demister 2, every grade of demister is discoideus, and both sides are furnished with high pressure washing water pipe 3 about every grade of demister, pending air-flow is from bottom to top by the secondary demister, and the droplet in the air-flow obtains separating and removes, and gas is discharged by the demister top.
First order folded plate type demist blade is arranged in juxtaposition to each other, forms ring-type; Some groups of ring-shaped blade groups constitute the integral body of first order demist blade.When between the airflow passes blade during passage, because of streamline deflection, large diameter droplet will depart from the direction of motion and the impact blades surface of air-flow because self inertia is bigger, thereby obtain removing.Passage all tilts towards same direction of rotation at outlet section between blade in addition, makes this layer blade play the effect of deflector simultaneously like this, and air-flow will rotate rising because of the guide functions of blade after by this layer demister.
Second level demister adopts folded plate type demist blade equally, and the passage in the vertical direction is set to deflector type between blade; Be set to concentric ring-shaped in the horizontal direction, when therefore the air communication that rises when rotation was crossed second level demister, the in the vertical direction droplet was because self inertia departs from the air-flow streamline, thereby impact blades is removed; Then under action of centrifugal force, droplet gets rid of the inwall of passage outside blade between circular blade, is captured subsequently on the horizontal direction.The feasible droplet than minor diameter of the compound action that deflection plate inertial separation and rotating centrifugal separate obtains removing.
Every grade of demister all is furnished with wash tub pipe in both sides up and down, and Flushing nozzle adopts multiple spot evenly to distribute, and is connected with wash tub pipe.Periodically wash the demist blade by shower nozzle, to avoid demister blade surface scale in the long-time running process, demist channel jam.
Example:
The present invention is applied in the wet fuel gas desulfurizing technology, and to removing of droplet in the flue gas after desulfurization: designed demister and wet process of FGD equipment are set to a bulk devulcanization system, are arranged in the top of desulfurizing tower.Tower diameter is 12m, and demist section total height is 4.0m, and the average upflow velocity of flue gas is 5m/s in the tower.
Contain the droplet flue gas from bottom to top earlier by first order demister.First order folded plate type demist blade is arranged in juxtaposition to each other, and blade pitgh is 40mm, and blade height is 350mm, and the blade knuckle is 75 °, and the formation of arranging is circular.Become one group of blade.First order demister is established 7 groups of ring-shaped blades altogether, and every group of width is 750mm.The middle part diameter is that the cylindric zone of 1500mm is set to the air-flow blind area.First order demister has played the effect of removing major diameter droplet and water conservancy diversion flue gas simultaneously.
The passage in the vertical direction is set to deflector type between its blade of folded plate type demister of the second level, and blade pitgh is 25mm, and blade height is 300mm, and the blade knuckle is 90 °.Be set to concentric ring-shaped in the horizontal direction, the middle part diameter is that the cylindric zone of 1500mm is set to the air-flow blind area.Second level demister is further removed the minor diameter droplet under the synergy of effect of deflection plate inertial separation and rotating centrifugal centrifugation.Flue gas is discharged by the outlet of demister top afterwards.
High-pressure washing system is arranged in the both sides up and down of every grade of demister, and every side is provided with 11 80 * 10 pressure pipes with a high standard, and is connected (amounting to 744 flooding nozzles) with 186 flooding nozzles.Nozzle is 0.78m apart from the vertical range h on demister surface, and spraying angle of flare α is 75 °, and the flushing coverage rate reaches 300%.Aspect flushing pressure, first order demister front washing pressure is designed to 2.4 * 10
5Pa; Backside rinse hydraulic pressure is designed to 1.6 * 10
5Pa; Demister front, second level washing pressure is designed to 2.2 * 10
5Pa; Backside rinse hydraulic pressure is designed to 1.4 * 10
5Pa.The total instantaneous design water consumption of rinse-system is 1124m
3/ m
2* h.And it is 1.5h that flushing cycle is set.
This system is through the operation test, and overall demist efficient is higher than 97%, and loss of total pressure is less than 200Pa.
Claims (4)
1. deflection plate cyclone demister, it is characterized in that this demister integral body is cylindric, connect from bottom to top the secondary demister be set in inside, comprise first order demister (1), second level demister (2), every grade of demister is discoideus, and is furnished with high pressure washing water pipe (3) in both sides up and down at every grade of demister, and pending air-flow is from bottom to top by the secondary demister, droplet in the air-flow obtains separating and removes, and gas is discharged by the demister top.
2. deflection plate cyclone demister according to claim 1 is characterized in that first order demister (1) adopts folded plate type demist blade (4) to be arranged in juxtaposition to each other, forms ring-type; Some groups of ring-shaped blade concentrics are positioned at the integral body that same plane group constitutes first order demist blade.
3. deflection plate cyclone demister according to claim 1 it is characterized in that second level demister (2) adopts folded plate type demist blade (4) equally, and the passage in the vertical direction is set to deflector type between blade; Be set to concentric ring-shaped in the horizontal direction.
4. deflection plate cyclone demister according to claim 1, it is characterized in that described high pressure washing water pipe (3) connects the employing equally distributed Flushing nozzle of multiple spot (5), periodically wash the demist blade by shower nozzle, to avoid demister blade surface scale in the long-time running process, demist channel jam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100183165A CN101791505B (en) | 2010-01-13 | 2010-01-13 | Baffle type cyclone demister |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100183165A CN101791505B (en) | 2010-01-13 | 2010-01-13 | Baffle type cyclone demister |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101791505A true CN101791505A (en) | 2010-08-04 |
| CN101791505B CN101791505B (en) | 2011-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010100183165A Expired - Fee Related CN101791505B (en) | 2010-01-13 | 2010-01-13 | Baffle type cyclone demister |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102091495A (en) * | 2010-12-29 | 2011-06-15 | 上海大学 | Dynamic jet flow energy-saving demister |
| CN102688647A (en) * | 2012-05-30 | 2012-09-26 | 西安交通大学 | Cyclone composition condensated water recovery device utilizing baffles |
| CN103816722A (en) * | 2014-03-10 | 2014-05-28 | 南京工业大学 | Supergravity demister applied to MVR system |
| CN104492169A (en) * | 2014-12-09 | 2015-04-08 | 武汉科技大学 | Cocurrent type coiling-free cycloid demisting device |
| CN104936673A (en) * | 2012-11-06 | 2015-09-23 | 高效能源有限公司 | Droplet separator and evaporator |
| CN104971553A (en) * | 2015-07-21 | 2015-10-14 | 中国科学院广州能源研究所 | Multi-level composite efficient gas-liquid separation device |
| CN104984597A (en) * | 2015-07-27 | 2015-10-21 | 航天环境工程有限公司 | Pneumatic-cyclone parallel-combination demister and application thereof |
| CN105107277A (en) * | 2015-09-16 | 2015-12-02 | 佛山赛因迪环保科技有限公司 | Demister for desulfurization tower |
| CN105194933A (en) * | 2015-11-19 | 2015-12-30 | 北京国电龙源环保工程有限公司 | Demisting system and method for achieving continuous flushing |
| CN106110943A (en) * | 2016-08-18 | 2016-11-16 | 无锡飞达纺织印染机械有限公司 | A kind of have the spinning slurry stirrer preventing from hoarding function |
| WO2016189054A1 (en) | 2015-05-28 | 2016-12-01 | Efficient Energy Gmbh | Droplet separator with redirection and method of producing said separator |
| CN106731431A (en) * | 2017-02-07 | 2017-05-31 | 武汉福及第环保设备有限公司 | Vortex tube bank dedusting demister |
| CN107376519A (en) * | 2017-09-06 | 2017-11-24 | 上海汇闵能源科技有限公司 | Suitable for the system and method for low pressure vapor separation |
| CN108854401A (en) * | 2018-07-26 | 2018-11-23 | 武汉科技大学 | A kind of anti-clogging effective fluidized demister |
| RU2698682C1 (en) * | 2015-12-08 | 2019-08-28 | Цзянсу Ланьшань Энвайронмент Текнолоджи Ко., Лтд. | Set of blades for mist trapping and dust removal |
| CN110947250A (en) * | 2019-12-02 | 2020-04-03 | 大连海事大学 | Gas-liquid separation device |
| CN111068410A (en) * | 2018-10-19 | 2020-04-28 | 航天环境工程有限公司 | Efficient purification device for wet smoke plume of direct-discharge chimney of wet desulfurization tower by calcium method and application |
| CN114904334A (en) * | 2022-06-24 | 2022-08-16 | 台州临港热电有限公司 | Flue gas demisting device |
-
2010
- 2010-01-13 CN CN2010100183165A patent/CN101791505B/en not_active Expired - Fee Related
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102091495A (en) * | 2010-12-29 | 2011-06-15 | 上海大学 | Dynamic jet flow energy-saving demister |
| CN102688647A (en) * | 2012-05-30 | 2012-09-26 | 西安交通大学 | Cyclone composition condensated water recovery device utilizing baffles |
| CN102688647B (en) * | 2012-05-30 | 2014-08-06 | 西安交通大学 | Cyclone composition condensated water recovery device utilizing baffles |
| CN104936673A (en) * | 2012-11-06 | 2015-09-23 | 高效能源有限公司 | Droplet separator and evaporator |
| CN104936673B (en) * | 2012-11-06 | 2017-03-15 | 高效能源有限公司 | Liquid drop separator and vaporizer |
| CN103816722A (en) * | 2014-03-10 | 2014-05-28 | 南京工业大学 | Supergravity demister applied to MVR system |
| CN103816722B (en) * | 2014-03-10 | 2015-12-30 | 南京工业大学 | Supergravity demister applied to MVR system |
| CN104492169A (en) * | 2014-12-09 | 2015-04-08 | 武汉科技大学 | Cocurrent type coiling-free cycloid demisting device |
| CN104492169B (en) * | 2014-12-09 | 2016-03-16 | 武汉科技大学 | A kind of downflow type is without winding spin line demister |
| DE102015209847A1 (en) | 2015-05-28 | 2016-12-01 | Efficient Energy Gmbh | Droplet separator with diverter and evaporator / compressor combination |
| WO2016189054A1 (en) | 2015-05-28 | 2016-12-01 | Efficient Energy Gmbh | Droplet separator with redirection and method of producing said separator |
| CN104971553A (en) * | 2015-07-21 | 2015-10-14 | 中国科学院广州能源研究所 | Multi-level composite efficient gas-liquid separation device |
| CN104984597B (en) * | 2015-07-27 | 2016-09-07 | 航天环境工程有限公司 | A kind of air swirl parallel combination demister and application |
| CN104984597A (en) * | 2015-07-27 | 2015-10-21 | 航天环境工程有限公司 | Pneumatic-cyclone parallel-combination demister and application thereof |
| CN105107277A (en) * | 2015-09-16 | 2015-12-02 | 佛山赛因迪环保科技有限公司 | Demister for desulfurization tower |
| CN105194933A (en) * | 2015-11-19 | 2015-12-30 | 北京国电龙源环保工程有限公司 | Demisting system and method for achieving continuous flushing |
| RU2698682C1 (en) * | 2015-12-08 | 2019-08-28 | Цзянсу Ланьшань Энвайронмент Текнолоджи Ко., Лтд. | Set of blades for mist trapping and dust removal |
| CN106110943A (en) * | 2016-08-18 | 2016-11-16 | 无锡飞达纺织印染机械有限公司 | A kind of have the spinning slurry stirrer preventing from hoarding function |
| CN106731431A (en) * | 2017-02-07 | 2017-05-31 | 武汉福及第环保设备有限公司 | Vortex tube bank dedusting demister |
| CN107376519B (en) * | 2017-09-06 | 2022-12-02 | 上海汇闵能源科技有限公司 | System and method suitable for low-pressure steam-water separation |
| CN107376519A (en) * | 2017-09-06 | 2017-11-24 | 上海汇闵能源科技有限公司 | Suitable for the system and method for low pressure vapor separation |
| CN108854401A (en) * | 2018-07-26 | 2018-11-23 | 武汉科技大学 | A kind of anti-clogging effective fluidized demister |
| CN108854401B (en) * | 2018-07-26 | 2024-02-02 | 迈威尔流体技术(上海)有限公司 | Anti-blocking efficient fluidization demister |
| CN111068410A (en) * | 2018-10-19 | 2020-04-28 | 航天环境工程有限公司 | Efficient purification device for wet smoke plume of direct-discharge chimney of wet desulfurization tower by calcium method and application |
| CN110947250A (en) * | 2019-12-02 | 2020-04-03 | 大连海事大学 | Gas-liquid separation device |
| CN114904334A (en) * | 2022-06-24 | 2022-08-16 | 台州临港热电有限公司 | Flue gas demisting device |
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| CN101791505B (en) | 2011-07-06 |
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