CN106039914A - Parabolic spherical reflection acoustic agglomeration PM2.5 emission reduction device and method - Google Patents
Parabolic spherical reflection acoustic agglomeration PM2.5 emission reduction device and method Download PDFInfo
- Publication number
- CN106039914A CN106039914A CN201610554882.5A CN201610554882A CN106039914A CN 106039914 A CN106039914 A CN 106039914A CN 201610554882 A CN201610554882 A CN 201610554882A CN 106039914 A CN106039914 A CN 106039914A
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- cabin
- parabolic
- spheric
- cohesion
- agglomeration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D51/00—Auxiliary pretreatment of gases or vapours to be cleaned
- B01D51/02—Amassing the particles, e.g. by flocculation
- B01D51/06—Amassing the particles, e.g. by flocculation by varying the pressure of the gas or vapour
- B01D51/08—Amassing the particles, e.g. by flocculation by varying the pressure of the gas or vapour by sound or ultrasonics
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2273/00—Operation of filters specially adapted for separating dispersed particles from gases or vapours
- B01D2273/24—Making use of acoustic waves, e.g. for measurements
Abstract
The invention discloses a parabolic spherical reflection acoustic agglomeration PM2.5 emission reduction device and method. The device comprises sound generators, an agglomeration cabin and an agglomeration cabin movable end face. At least one sound generator is arranged on one outer wall of the agglomeration cabin. The direction of sound waves emitted by the sound generators faces the interior of the agglomeration cabin. The other opposite side face of the agglomeration cabin is the agglomeration cabin movable end face. The agglomeration cabin movable end face can move in the emission direction of sound waves. A smoke inlet is formed in the bottom of the agglomeration cabin. A smoke outlet is formed in the top of the agglomeration cabin. Through the sound generators with parabolic spherical baffles, the acoustic agglomeration dust removal efficiency is improved, and meanwhile the consumption for acoustic agglomeration is reduced; by adopting the sound sources capable of being modulated and monitoring the smoke characteristics and particle agglomeration effects in real time, the closed-loop control over the sound sources capable of being modulated is achieved, and the device adapts to different dust-containing air flow.
Description
Technical field
The present invention relates to a kind of dust arrester removing PM2.5 in flue gas and method, especially a kind of acoustic agglomerator combined type
Cyclone dust extractor, belongs to the technical field that pollution control equipment manufactures.
Background technology
The pollutant that chemical combustion energy resource system is discharged in air are increasing, thin of the suspension with PM2.5 as representative
Grain is remote rich in noxious substance and atmospheric residence time length, fed distance, not only reduces atmospheric visibility, affect traffic,
Natural environment and climate, and health is had the serious harm of short-term and long-term accumulated.
Fine particulates aggregation efficiency in the environment of general sonic agglomeration technology is the highest, to only improve aggregation efficiency
Increase sound pressure level, thus add power consumption.
Summary of the invention
It is an object of the invention to provide a kind of by the method for fine particulates in acoustic agglomerator removing air-flow, the method can have
PM2.5 particulate matter in effect removing chemical combustion discharge gas, reduces the pollution to environment.
In order to realize above-mentioned technical purpose, the technical scheme is that,
A kind of parabolic spheric reflection acoustic agglomerator PM2.5 emission reduction device, can move including sonic generator, cohesion cabin and cohesion cabin
Face, moved end, the side outer wall in cohesion cabin is provided with at least one sonic generator, the sound wave direction court that sonic generator is launched
Inside cohesion cabin, the bottom in cohesion cabin is provided with gas approach, and top is provided with exhanst gas outlet.
Described a kind of parabolic spheric reflection acoustic agglomerator PM2.5 emission reduction device, also includes parabolic spheric baffle, described throwing
Thing spheric baffle is hemispherical cambered surface, and cambered surface is arranged in cohesion storehouse, and sonic generator is fixed on Jiao of parabolic spheric baffle
At Dian.
Described a kind of parabolic spheric reflection acoustic agglomerator PM2.5 emission reduction device, described sonic generator is in cohesion out of my cabin
It is vertically arranged on wall, each sonic generator is covered with a corresponding parabolic spheric baffle.
Described a kind of parabolic spheric reflection acoustic agglomerator PM2.5 emission reduction device, cohesion cabin is relative to another of sonic generator
Sidewall may move end face for cohesion cabin, and cohesion cabin may move end face and can move along acoustic emission direction to realize cohesion cabin at sound
Ripple launch party length adjustment upwards.
Described a kind of parabolic spheric reflection acoustic agglomerator PM2.5 emission reduction device, described cohesion cabin may move end face with solidifying
Being provided with pulley on poly-cabin between lower wall, cohesion cabin may move end face and moved by electric operator driving.
Described a kind of parabolic spheric reflection acoustic agglomerator PM2.5 emission reduction device, also includes cyclone dust extractor, described whirlwind
Cleaner unit is connected to exhanst gas outlet.
A kind of parabolic spheric reflection acoustic agglomerator PM2.5 discharge-reducing method, uses the device as described in claim 1-6 is arbitrary,
Comprise the following steps:
Step 1: open sonic generator, makes sound wave reflect through parabolic spheric baffle, and along parabolic spheric baffle
Mandrel direction pack so that in the range of parabolic spheric baffle indication, sound field intensity strengthens；
Step 2: open cyclone dust extractor, and make flue gas enter from gas approach, when flue gas is by cohesion cabin, sound field makes
Particulate matter in flue gas carries out colliding and being agglomerated into bigger particulate matter, and last flue gas is discharged and by cyclone dust removal from exhanst gas outlet
Device carries out process and the collection of particulate matter.
Described a kind of parabolic spheric reflection acoustic agglomerator PM2.5 discharge-reducing method, flue gas enters from smoke inlet after condensing cabin,
According to wave length of sound, may move end face by cohesion cabin and change the lateral separation in cohesion cabin so that incident acoustic wave and reflection sound wave
Between the integral multiple that distance is half-wavelength, and cohesion cabin in formed standing wave.
The method have technical effect that, 1) improve acoustic agglomerator efficiency of dust collection: cohesion side, cabin is provided with multiple band parabolic ball
The sonic generator of face baffle, after frequency of sound wave determines, regulation cohesion cabin may move between end face and sonic generator away from
From, the integral multiple making distance between the two be half-wavelength, in cohesion cabin, form multiple horizontal standing-wave sound field.PM2.5 granule
Thing from bottom to top by multiple standing-wave sound fields, increases the probability that PM2.5 particulate matter mutually collides, the group of improve in cohesion cabin
Poly-effect.In conjunction with conventional cyclone dust extractor, reach the purpose of efficient removal PM2.5, to control the discharge of PM2.5.
2) energy consumption of acoustic agglomerator is reduced: sonic generator is fixed on parabolic by the connecting rod of parabolic spheric baffle central shaft
The focal point of spheric baffle, sound wave reflects through parabolic spheric baffle, along the central axis direction pack of parabolic spheric baffle, so
In the range of parabolic spheric baffle indication, sound field intensity strengthens.And due to the bunching action of parabolic spheric baffle, reduce each
The formation of the interference between sound source, beneficially standing-wave sound field.
The invention will be further described below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Wherein 1 for sonic generator, 2 for parabolic spheric baffle, 3 for cohesion cabin, 4 for cohesion cabin may move end face, 5 for rotation
Wind cleaner unit, 6 it is electric operator.
Detailed description of the invention
The whole device of the present invention is divided into three parts as shown in Figure 1: sound source, cohesion cabin, cyclone dust extractor.Wherein sound source
Modulated sound source for band parabolic spheric baffle；Cohesion cabin is made up of nacelle and removable end face.
Parabolic spheric baffle central axis direction is provided with connecting rod, and sonic generator is fixed on parabolic sphere by connecting rod and hinders
The focal point of plate；Parabolic spheric baffle at cohesion cabin left surface is vertically arranged；Removable end face uses electric operator real
The now regulation of cohesion cabin lateral length.
Concrete connected mode is as follows: one end of the horizontal pipe of dust-contained airflow import is connected with the lower end in cohesion cabin；Whirlwind
Cleaner unit is connected with the top exhanst gas outlet in cohesion cabin；Parabolic spheric baffle central axis direction is provided with connecting rod, sonic generator
The focal point of parabolic spheric baffle it is fixed on by connecting rod；Parabolic spheric baffle at cohesion cabin left surface is vertically arranged；Solidifying
The right flank in poly-cabin is removable end face, and removable distance between end face and sonic generator is regulated by electric operator.
The pack of sound wave: sonic generator is arranged on the focal point of parabolic spheric baffle, sound wave is through parabolic spheric baffle
Reflection, along the central axis direction pack of parabolic spheric baffle, in the range of such parabolic spheric baffle indication, sound field intensity increases.And
And reduce the interference between each sound source, the formation of the most each standing-wave sound field.
The theoretical foundation of sound wave pack is:
Curved rigid surfaces reflection focuses on
The propagation of sound wave meets Snell's law.Curved rigid surfaces, does not deforms upon at incident acoustic wave effect lower surface camber, sound wave
Inside thoroughly less than curved surface, can not swash curved surface internal vibration.
When reflecting surface is curved surface, available Snell's law seeks sound wave reflection sound ray on curved surface.Such as, it is intended to ask bent
The reflected ray of certain point on face, then to cross the tangent plane of this curved surface selected as minute surface so that it is angle of incidence is equal to angle of reflection, i.e. can determine that
Reflection sound ray.Convex surface has obvious scattering process to incident acoustic wave, and it contributes to the diffusion of sound field；Concave curved surface reflection will make sound
Sound converges at certain region or area for sound,focal occurs, thus causes the uneven of sound-filed simulation.
When reflecting surface is parabolic sphere, and sound source is arranged on the focal point of parabolic sphere, can according to Snell's law
Knowing, all reflection sound rays are parallel with the central shaft of parabolic sphere.Therefore, in cohesion cabin, sound wave will be put down in parabolic sphere central axis direction
Row pack.
The formation of standing wave: TT&C system is by being deployed in the cohesion flow transducer in cabin, baroceptor, acoustic pressure sensing
The feature of device, particulate matter grain instrument monitor monitoring flue gas, determines the optimal frequency of particulate matter acoustic agglomerator.After frequency determines, calculate
Going out wave length of sound, the lateral separation being changed cohesion cabin by removable end face makes the distance between incident acoustic wave and reflection sound wave
For the integral multiple of half-wavelength, when the integral multiple that incidence wave and echo distance are half-wavelength, in cohesion cabin, form standing wave.Solidifying
Side, poly-cabin is provided with multi-acoustical, can form the standing-wave sound field of multiple horizontal direction in cohesion cabin.
The theoretical foundation that standing-wave sound field is formed is:
Two arrange propagate in opposite direction direction of vibration, amplitude, sound wave that frequency is the most identical, when propagating in same media
Interference will be produced, antinode and node occur, form standing wave.
In cohesion cabin, incident acoustic wave is produced by sound source, and incident acoustic wave produces echo through removable end face reflection, the most solidifying
Poly-cabin internal reflection sound source is removable end face.When sound source and the integral multiple that distance is half-wavelength of removable end face, formation is stayed
Ripple.Owing to incident sound source has the pack of parabolic sphere, therefore the impact between each sound source can be ignored.So can in cohesion cabin
Form multiple independent standing-wave sound field.
The running of this device: burning and exhausting flue gas and other dust-contained airflows bottom inlet from cohesion cabin enter, so
Afterwards according to wave length of sound, by the removable end face of electric operator regulation, the lateral separation changing cohesion cabin makes incident sound
Ripple and reflection sound wave between the integral multiple that distance is half-wavelength, when incidence wave and echo distance be half-wavelength integral multiple
Time, in cohesion cabin, form standing wave.Cohesion side, cabin is provided with multi-acoustical, can form multiple horizontal direction in cohesion cabin
Standing-wave sound field.Burning and exhausting flue gas and other dust-contained airflows by the multiple standing-wave sound fields in cohesion cabin, increase from bottom to top
Collision probability between particulate matter, can make to be agglomerated into bigger particulate matter through multiple impacts between particulate matter, it is possible to so that
Particulate matter after reunion is reunited again.Bulky grain thing after reunion, is finally processed by cyclone dust extractor and collects.
Claims (8)
1. a parabolic spheric reflection acoustic agglomerator PM2.5 emission reduction device, it is characterised in that include sonic generator (1), cohesion cabin
(3) and cohesion cabin may move end face (4), the side outer wall of cohesion cabin (3) is provided with at least one sonic generator (1), sound wave
The sound wave direction that generator (1) is launched is internal towards cohesion cabin (3), and the bottom of cohesion cabin (3) is provided with gas approach, and top sets
There is exhanst gas outlet.
A kind of parabolic spheric reflection acoustic agglomerator PM2.5 emission reduction device the most according to claim 1, it is characterised in that: also wrap
Including parabolic spheric baffle (2), described parabolic spheric baffle (2) is hemispherical cambered surface, and cambered surface is arranged in cohesion storehouse, sound wave
Generator (1) is fixed on the focal point of parabolic spheric baffle (2).
A kind of parabolic spheric reflection acoustic agglomerator PM2.5 emission reduction device the most according to claim 2, it is characterised in that: described
Sonic generator (1) cohesion cabin (3) outer wall on be vertically arranged, each sonic generator (1) is covered with a corresponding throwing
Thing spheric baffle (2).
A kind of parabolic spheric reflection acoustic agglomerator PM2.5 emission reduction device the most according to claim 1, it is characterised in that: cohesion
Another sidewall of cabin (3) sonic generator (1) relatively may move end face (4) for cohesion cabin, and cohesion cabin may move end face (4) can
Move along acoustic emission direction to realize cohesion cabin (3) length adjustment on acoustic emission direction.
A kind of parabolic spheric reflection acoustic agglomerator PM2.5 emission reduction device the most according to claim 4, it is characterised in that: described
Cohesion cabin may move and between end face (4) and the upper lower wall of cohesion cabin (3), be provided with pulley, cohesion cabin may move end face (4) by electronic
Actuator (10) drives and moves.
A kind of parabolic spheric reflection acoustic agglomerator PM2.5 emission reduction device the most according to claim 1, it is characterised in that: also wrap
Including cyclone dust extractor (5), described cyclone dust extractor (5) is connected to exhanst gas outlet.
7. a parabolic spheric reflection acoustic agglomerator PM2.5 discharge-reducing method, it is characterised in that use institute as arbitrary in claim 1-6
The device stated, comprises the following steps:
Step 1: open sonic generator (1), makes sound wave reflect through parabolic spheric baffle (2), and along parabolic spheric baffle (2)
Central axis direction pack so that in the range of parabolic spheric baffle (2) indication sound field intensity strengthen；
Step 2: open cyclone dust extractor (5), and make flue gas enter from gas approach, when flue gas is by cohesion cabin (3), sound field
Making the particulate matter in flue gas carry out colliding and being agglomerated into bigger particulate matter, last flue gas is discharged from exhanst gas outlet and is removed by whirlwind
Dirt device (5) carries out process and the collection of particulate matter.
A kind of parabolic spheric reflection acoustic agglomerator PM2.5 discharge-reducing method the most according to claim 7, it is characterised in that flue gas
After smoke inlet enters cohesion cabin, according to wave length of sound, may move end face (4) by cohesion cabin and change the horizontal stroke of cohesion cabin (3)
To distance so that the integral multiple that distance is half-wavelength between incident acoustic wave and reflection sound wave, and formation is stayed in cohesion cabin (3)
Ripple.
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| CN201610554882.5A CN106039914A (en) | 2016-07-14 | 2016-07-14 | Parabolic spherical reflection acoustic agglomeration PM2.5 emission reduction device and method |
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| CN106984129A (en) * | 2017-04-21 | 2017-07-28 | 南京常荣声学股份有限公司 | A kind of method and device that sound wave synergic dedusting is combined based on multi-frequency |
| CN107165119A (en) * | 2017-07-14 | 2017-09-15 | 杜星星 | It is a kind of that haze device is removed based on sound wave |
| CN108514790A (en) * | 2018-05-10 | 2018-09-11 | 中国计量大学 | Hand-held fire hazard aerosol fog cancellation element and the method to be eliminated smoke using the device |
| CN108771938A (en) * | 2018-04-18 | 2018-11-09 | 北京理工大学 | A kind of ultrasonic air gas purifying method and system |
| CN111841160A (en) * | 2019-04-25 | 2020-10-30 | 阿特拉斯·科普柯空气动力股份有限公司 | Separation device and method for separating liquid from gas and compressor installation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106984129A (en) * | 2017-04-21 | 2017-07-28 | 南京常荣声学股份有限公司 | A kind of method and device that sound wave synergic dedusting is combined based on multi-frequency |
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| CN111841160A (en) * | 2019-04-25 | 2020-10-30 | 阿特拉斯·科普柯空气动力股份有限公司 | Separation device and method for separating liquid from gas and compressor installation |
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