CN103706219A - Device for removing fine particles by joint action of acoustic agglomeration and mist spray and method of device - Google Patents

Device for removing fine particles by joint action of acoustic agglomeration and mist spray and method of device Download PDF

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Publication number
CN103706219A
CN103706219A CN201310729868.0A CN201310729868A CN103706219A CN 103706219 A CN103706219 A CN 103706219A CN 201310729868 A CN201310729868 A CN 201310729868A CN 103706219 A CN103706219 A CN 103706219A
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China
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sound
chamber main
agglomeration
nozzle
reunion chamber
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CN201310729868.0A
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Chinese (zh)
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CN103706219B (en
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骆仲泱
周栋
方梦祥
施正伦
王涛
高翔
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浙江大学
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Abstract

The invention discloses a device for removing fine particles by joint action of acoustic agglomeration and mist spray and a method of the device. A compressed drive sound source is arranged at the top of a main agglomeration chamber body, and connected with a power amplifier and a signal generator sequentially; a smoke inlet is formed in the lateral wall of the upper part of the main agglomeration chamber body; a nozzle is arranged inside the upper part of the main agglomeration chamber body, and connected with a buffer tank, a plunger type metering pump and a storage tank respectively; an induced draft fan is arranged at the lateral wall of the lower part of the main agglomeration chamber body; a sound-absorbing sponge is arranged at the bottom of the main agglomeration chamber body. Fine particles in dust-containing airflow such as discharged smoke from a coal-fired power plant are preprocessed by using joint action of acoustic agglomeration and mist spray, so that the acoustic agglomeration efficiency of the fine particles is greatly improved, and the target of efficiently removing particulate matter 2.5 (PM2.5) is achieved by combining with subsequent traditional dust removers. Thus, emission of the PM2.5 is controlled. The sound pressure level required by the method of combining acoustic wave with mist spray is much lower than that of the method only adopting the acoustic wave, so that the energy consumption of acoustic agglomeration is effectively reduced.

Description

Acoustic agglomeration removes the devices and methods therefor of fine particulates in conjunction with spraying synergy
Technical field
Relate to the technical field that pollution control equipment is manufactured herein, relate in particular to a kind of acoustic agglomeration and in conjunction with spraying synergy, remove the devices and methods therefor of fine particulates.
Background technology
Coal is the main fuel source of China's electric power, in a foreseeable future in decades, coal-fired thermal power generation in the power industry of China by long-term dominate.The energy resource structure of this long-term dependence coal fired power generation has caused serious environmental pollution, and the flue dust of coal-burning power plant's discharge is one of important sources of pellet in atmospheric environment.Pellet especially aerodynamic diameter to be less than the particle (PM2.5) of 2.5 microns be the important pollutant that affects China's air quality, it not only affects global climate environment, destroys the ecosystem and history relic, and huge to human health damage.
More existing cleaners, comprise mechanical separator, electrostatic precipitation, bag-type dust etc., according to himself feature and application scenario, respectively there are pluses and minuses, although mechanical separator, electrostatic precipitator have higher total efficiency of dust collection, but the removal efficiency for PM2.5 is not high, although the higher operating cost of sack cleaner efficiency is larger, pressure drop is also very large.
General acoustic agglomeration technology is limited to the reunion efficiency of fine particle, and need to strengthen sound pressure level in order to improve reunion efficiency, has increased energy consumption, and effect neither be obvious especially.The present invention carries out pretreatment in conjunction with high strong sound wave and the spraying system synergy of low frequency 1400 ~ 2000Hz to flue gas, improve the reunion efficiency of fine particle, adopt again conventional dust arrester further to remove the bulky grain after reuniting, thereby reach the object that efficiently removes PM2.5.And under identical fine particle reunion efficiency term, adopt sound wave will be significantly less than in conjunction with the required sound pressure level of method of spraying and only use the methods such as sound wave, thereby can effectively reduce the energy consumption of acoustic agglomeration.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of acoustic agglomeration in conjunction with spraying synergy, to remove the devices and methods therefor of fine particulates.
The device that acoustic agglomeration removes fine particulates in conjunction with spraying synergy comprises that compression drives sound source, reunion chamber main body, surge tank, plunger type metering pump, nozzle, air-introduced machine, sound absorption sponge, water tank, gas approach, power amplifier, signal generator; The top of reunion chamber main body is provided with compression and drives sound source, compression drives sound source to be connected in turn with power amplifier, signal generator, the upper portion side wall of reunion chamber main body is provided with gas approach, in the top of reunion chamber main body, be provided with nozzle, nozzle is connected with surge tank, plunger type metering pump, water tank respectively, the lower sides of reunion chamber main body is provided with air-introduced machine, and the bottom of reunion chamber main body is provided with sound absorption sponge.
Described compression drives the frequency 1400 ~ 2000Hz of sound source, sound pressure level 140 ~ 150dB.
Described nozzle is 60 ° of solid atomizers of Danfoss.
The method that acoustic agglomeration removes fine particulates in conjunction with spraying synergy is:
Dust-contained airflow enters reunion chamber main body through gas approach, it is 1400 ~ 2000Hz that compression drives sound source to send frequency, sound pressure level is the sound wave of 140 ~ 150dB, frequency and sound pressure level all can regulate arbitrarily in scope separately, sound absorption due to sound absorption sponge, sound wave forms Traveling wave in the main body of reunion chamber, sound absorption sponge thickness is 30mm, plunger type metering pump draws water from water tank, through surge tank, make stable water pressure at 1.6Mpa, water is atomized and enters reunion chamber after nozzle, its mist droplet particle size is distributed in the scope of 40 ~ 60 microns, the model of nozzle is 60 ° of solid atomizers of Danfoss, control the flow of dust-contained airflow, make the time of staying of dust-contained airflow in the main body of reunion chamber between 3 ~ 7 seconds, dust-contained airflow is reunited under the synergy of Traveling wave and spraying, fine particle is agglomerated into the particle that particle diameter is larger, through air-introduced machine, discharge.
The invention has the beneficial effects as follows:
1) improve fine particle efficiency of dust collection: adopt acoustic agglomeration, in conjunction with spraying synergy, the fine particle in the dust-contained airflows such as coal-burning power plant's smoke evacuation is carried out to pretreatment, greatly improve the acoustic agglomeration efficiency of fine particle, in conjunction with follow-up traditional deduster, reach the object that efficiently removes PM2.5, thereby control the discharge of PM2.5.
2) reduce the energy consumption of acoustic agglomeration: in the situation that reunion efficiency is identical, adopts sound wave will be significantly less than and only use the methods such as sound wave in conjunction with the required sound pressure level of method of spraying, thereby can effectively reduce the energy consumption of acoustic agglomeration.
Accompanying drawing explanation
Fig. 1 is the device schematic diagram that acoustic agglomeration and spraying synergy remove fine particulates;
In figure: compression drives sound source 1, reunion chamber main body 2, surge tank 3, plunger type metering pump 4, nozzle 5, air-introduced machine 6, sound absorption sponge 7, water tank 8, gas approach 9.
Specific embodiments
As shown in Figure 1, the device that acoustic agglomeration removes fine particulates in conjunction with spraying synergy comprises that compression drives sound source 1, reunion chamber main body 2, surge tank 3, plunger type metering pump 4, nozzle 5, air-introduced machine 6, sound absorption sponge 7, water tank 8, gas approach 9, power amplifier, signal generator; The top of reunion chamber main body 2 is provided with compression and drives sound source 1, compression drives sound source 1 to be connected in turn with power amplifier, signal generator, the upper portion side wall of reunion chamber main body 2 is provided with gas approach 9, in the top of reunion chamber main body 2, be provided with nozzle 5, nozzle 5 is connected with surge tank 3, plunger type metering pump 4, water tank 8 respectively, the lower sides of reunion chamber main body 2 is provided with air-introduced machine 6, and the bottom of reunion chamber main body 2 is provided with sound absorption sponge 7.
Described compression drives the frequency 1400 ~ 2000Hz of sound source 1, sound pressure level 140 ~ 150dB.Described nozzle 5 is 60 ° of solid atomizers of Danfoss.
The method that acoustic agglomeration removes fine particulates in conjunction with spraying synergy is:
Dust-contained airflow enters reunion chamber main body 2 through gas approach 9, it is 1400 ~ 2000Hz that compression drives sound source 1 to send frequency, sound pressure level is the sound wave of 140 ~ 150dB, frequency and sound pressure level all can regulate arbitrarily in scope separately, sound absorption due to sound absorption sponge 7, sound wave forms Traveling wave in reunion chamber main body 2, sound absorption sponge 7 thickness are 30mm, plunger type metering pump 4 draws water from water tank 8, through surge tank 3, make stable water pressure at 1.6Mpa, water is atomized and enters reunion chamber after nozzle 5, its mist droplet particle size is distributed in the scope of 40 ~ 60 microns, the model of nozzle 5 is 60 ° of solid atomizers of Danfoss, control the flow of dust-contained airflow, make the time of staying of dust-contained airflow in reunion chamber main body 2 between 3 ~ 7 seconds, dust-contained airflow is reunited under the synergy of Traveling wave and spraying, fine particle is agglomerated into the particle that particle diameter is larger, through air-introduced machine 6, discharge.
The present invention adopts the sound wave of design and the symphyogenetic device of spraying, and dust-contained airflow is carried out to pretreatment.Concrete technical characterstic is:
1) determining of sound source condition of work: employing be Traveling wave, frequency of source does not affect sound field and forms, and can be adjusted to arbitrarily the frequency of source of fine particle reunion efficiency the best, scope is between 1400 ~ 2000Hz.Sound pressure level is higher, and reunion efficiency is better, considers sound source stability and energy consumption, adopts the high sound intensity of 140 ~ 150dB to arbitrarily downgrade.
2) determining of reunion chamber size: acoustic agglomeration needs dust-contained airflow to have certain time of staying in sound field, according to the flow of gas, in the chamber that should guarantee to reunite, the time of staying of air-flow is not less than 3 seconds, considers that volume is unsuitable excessive, and the time of staying 3 ~ 7s is best.
3) adding of spraying: the pressure of spraying is controlled by plunger type metering pump, because pressure is easily unstable, use surge tank to carry out voltage stabilizing processing to atomizer passgae, and monitor with Pressure gauge.Nozzle puts in reunion chamber by the flange port of the upper end, chamber of reuniting, and water forms vaporific to the indoor ejection of reuniting, with dust-contained airflow effect after nozzle.
4) course of work: open sound source, opening plunger formula measuring pump starts spraying simultaneously, and dust-contained airflow end entrance from reunion chamber enters, and fine particle is reunited under the acting in conjunction of sound wave and spraying, and air-flow is discharged through air-introduced machine from the outlet of bottom, reunion chamber.

Claims (4)

1. an acoustic agglomeration removes the device of fine particulates in conjunction with spraying synergy, it is characterized in that comprising that compression drives sound source (1), reunion chamber main body (2), surge tank (3), plunger type metering pump (4), nozzle (5), air-introduced machine (6), sound absorption sponge (7), water tank (8), gas approach (9), power amplifier, signal generator; The top of reunion chamber main body (2) is provided with compression and drives sound source (1), compression drives sound source (1) to be connected in turn with power amplifier, signal generator, the upper portion side wall of reunion chamber main body (2) is provided with gas approach (9), in the top of reunion chamber main body (2), be provided with nozzle (5), nozzle (5) is connected with surge tank (3), plunger type metering pump (4), water tank (8) respectively, the lower sides of reunion chamber main body (2) is provided with air-introduced machine (6), and the bottom of reunion chamber main body (2) is provided with sound absorption sponge (7).
2. an acoustic agglomeration according to claim 1 removes the device of fine particulates in conjunction with spraying synergy, it is characterized in that described compression drives the frequency 1400 ~ 2000Hz of sound source (1), sound pressure level 140 ~ 150dB.
3. an acoustic agglomeration according to claim 1 removes the device of fine particulates in conjunction with spraying synergy, it is characterized in that described nozzle (5) is 60 ° of solid atomizers of Danfoss.
4. the acoustic agglomeration that use is installed as claimed in claim 1 removes a method for fine particulates in conjunction with spraying synergy, it is characterized in that:
Dust-contained airflow enters reunion chamber main body (2) through gas approach (9), it is 1400 ~ 2000Hz that compression drives sound source (1) to send frequency, sound pressure level is the sound wave of 140 ~ 150dB, frequency and sound pressure level all can regulate arbitrarily in scope separately, sound absorption due to sound absorption sponge (7), sound wave forms Traveling wave in reunion chamber main body (2), sound absorption sponge (7) thickness is 30mm, plunger type metering pump (4) draws water from water tank (8), through surge tank (3), make stable water pressure at 1.6Mpa, water is atomized and enters reunion chamber after nozzle (5), its mist droplet particle size is distributed in the scope of 40 ~ 60 microns, the model of nozzle (5) is 60 ° of solid atomizers of Danfoss, control the flow of dust-contained airflow, make the time of staying of dust-contained airflow in reunion chamber main body (2) between 3 ~ 7 seconds, dust-contained airflow is reunited under the synergy of Traveling wave and spraying, fine particle is agglomerated into the particle that particle diameter is larger, through air-introduced machine (6), discharge.
CN201310729868.0A 2013-12-26 2013-12-26 Acoustic agglomeration combines the devices and methods therefor that spraying synergy removes fine particulates Active CN103706219B (en)

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Cited By (15)

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Publication number Priority date Publication date Assignee Title
CN103877824A (en) * 2014-04-10 2014-06-25 中国人民解放军国防科学技术大学 Fine particle emission reduction device of burning energy system based on acoustic agglomeration principle
CN103933822A (en) * 2014-04-29 2014-07-23 中国人民解放军国防科学技术大学 Resonant cavity type sound agglomeration system and method for treating suspended particles
CN103949135A (en) * 2014-04-29 2014-07-30 中国人民解放军国防科学技术大学 Strong sound agglomeration device and method for treating suspended particles
CN104147891A (en) * 2014-08-25 2014-11-19 东南大学 Device and method for controlling fine particle emission in wet flue gas desulfurization
CN104190199A (en) * 2014-09-02 2014-12-10 国家海洋局第三海洋研究所 Device and method for removing fine particles by virtue of acoustic wave and phase change coupling effect
CN104923403A (en) * 2015-06-29 2015-09-23 浙江大学 Device and method thereof for removing fine particles under sonic wave joint electric field
CN106076053A (en) * 2016-08-04 2016-11-09 长沙鑫嵘环保科技有限公司 Separate type acoustic agglomeration suspension fine grained emission-reducing system based on resonant cavity
CN106268159A (en) * 2016-09-06 2017-01-04 上海应用技术大学 A kind of exhaust gas processing device and processing method
CN106861352A (en) * 2017-03-24 2017-06-20 华北电力大学 Acoustic agglomeration joint turbulent flow coalescence technology removes the devices and methods therefor of fine particle
CN106975318A (en) * 2017-03-24 2017-07-25 华北电力大学 A kind of acoustic agglomeration joint magnetic fields removing fine particle devices and methods therefor
CN107158856A (en) * 2017-05-25 2017-09-15 华北电力大学 A kind of method that chemical agglomeration joint acoustic agglomeration removes coal-fired flue-gas tiny particles content
WO2019051816A1 (en) * 2017-09-16 2019-03-21 王元秀 Air humidification standing-wave purifier
CN110252056A (en) * 2019-06-05 2019-09-20 东华大学 A kind of ultrasonic standing wave dynamic scanning type dust laden air purification device of oblique incidence
CN111036006A (en) * 2019-12-24 2020-04-21 上海海事大学 Sound wave enhanced ship waste gas desulfurization and particulate matter removal device
CN111157615A (en) * 2019-12-31 2020-05-15 清华大学 Sound wave cloud chamber

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CN101219318A (en) * 2007-09-18 2008-07-16 东南大学 Apparatus and method for removing grains with combined action of sound wave and additional seed grain
CN101637683A (en) * 2009-08-10 2010-02-03 申小中 Acoustic agglomeration composite bag type dust removing device
CN101841255A (en) * 2010-04-19 2010-09-22 东南大学 Noise power generation device and power generation method
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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103877824B (en) * 2014-04-10 2015-12-09 中国人民解放军国防科学技术大学 Based on the Combustion Energy origin system fine particle emission reduction device of acoustic agglomerator principle
CN103877824A (en) * 2014-04-10 2014-06-25 中国人民解放军国防科学技术大学 Fine particle emission reduction device of burning energy system based on acoustic agglomeration principle
CN103933822A (en) * 2014-04-29 2014-07-23 中国人民解放军国防科学技术大学 Resonant cavity type sound agglomeration system and method for treating suspended particles
CN103949135A (en) * 2014-04-29 2014-07-30 中国人民解放军国防科学技术大学 Strong sound agglomeration device and method for treating suspended particles
CN104147891A (en) * 2014-08-25 2014-11-19 东南大学 Device and method for controlling fine particle emission in wet flue gas desulfurization
CN104190199A (en) * 2014-09-02 2014-12-10 国家海洋局第三海洋研究所 Device and method for removing fine particles by virtue of acoustic wave and phase change coupling effect
CN104190199B (en) * 2014-09-02 2016-03-23 国家海洋局第三海洋研究所 Sound wave and phase transformation coupling effect remove fine grain apparatus and method
CN104923403A (en) * 2015-06-29 2015-09-23 浙江大学 Device and method thereof for removing fine particles under sonic wave joint electric field
CN104923403B (en) * 2015-06-29 2018-03-16 浙江大学 The devices and methods therefor of sound wave combined electric field action removing fine particle
CN106076053A (en) * 2016-08-04 2016-11-09 长沙鑫嵘环保科技有限公司 Separate type acoustic agglomeration suspension fine grained emission-reducing system based on resonant cavity
CN106268159B (en) * 2016-09-06 2018-08-14 上海应用技术大学 A kind of exhaust gas processing device and processing method
CN106268159A (en) * 2016-09-06 2017-01-04 上海应用技术大学 A kind of exhaust gas processing device and processing method
CN106975318A (en) * 2017-03-24 2017-07-25 华北电力大学 A kind of acoustic agglomeration joint magnetic fields removing fine particle devices and methods therefor
CN106861352A (en) * 2017-03-24 2017-06-20 华北电力大学 Acoustic agglomeration joint turbulent flow coalescence technology removes the devices and methods therefor of fine particle
CN107158856A (en) * 2017-05-25 2017-09-15 华北电力大学 A kind of method that chemical agglomeration joint acoustic agglomeration removes coal-fired flue-gas tiny particles content
WO2019051816A1 (en) * 2017-09-16 2019-03-21 王元秀 Air humidification standing-wave purifier
CN110252056A (en) * 2019-06-05 2019-09-20 东华大学 A kind of ultrasonic standing wave dynamic scanning type dust laden air purification device of oblique incidence
CN111036006A (en) * 2019-12-24 2020-04-21 上海海事大学 Sound wave enhanced ship waste gas desulfurization and particulate matter removal device
CN111157615A (en) * 2019-12-31 2020-05-15 清华大学 Sound wave cloud chamber

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