CN103877824A - Fine particle emission reduction device of burning energy system based on acoustic agglomeration principle - Google Patents
Fine particle emission reduction device of burning energy system based on acoustic agglomeration principle Download PDFInfo
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- CN103877824A CN103877824A CN201410142620.9A CN201410142620A CN103877824A CN 103877824 A CN103877824 A CN 103877824A CN 201410142620 A CN201410142620 A CN 201410142620A CN 103877824 A CN103877824 A CN 103877824A
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Abstract
The invention designs a device for realizing acoustic agglomeration emission reduction of fine particles in high-flow flue gas of a burning energy system. The device comprises a high-pressure gas flow source, a high-pressure gas mixing chamber, gas flow sound sources, a horn, a coupling cabin, an agglomeration cabin, an extended cabin, a movable end surface, a conventional dust remover, a data sensing control part, a central measurement and control computer, a sound elimination part and a sound insulation part. According to the device, the three high-power gas flow sound sources are matched with a variable-section pipeline by fully utilizing the principle that the acoustic agglomeration efficiency is sharply improved along with the increment of the sound pressure level; a barrier structure and a gas-sound separation part are introduced, so that the fine particles are quickly agglomerated in the large-size agglomeration cabin under the action of a high-strength and low-harmonic-component planar standing wave sound field; running parameters are adjusted and optimized in a unified manner by virtue of the measurement and control computer; the best transmission efficiency of strong sound waves from generating to acting is realized and the characteristic change of the fine particles is adapted; the whole realization scheme has the advantages of emission reduction efficiency, economical efficiency, applicability, no pollution, extendability and the like.
Description
Technical field
The present invention relates to a kind of emission reduction device that particle diameter in burning emit energy system flue gas is less than the fine particle (hereinafter to be referred as PM2.5) of 2.5 microns that removes, be particularly related to a kind of fine particle emission reduction device based on acoustic agglomerator principle, belong to the technical field that pollution control equipment is manufactured.
Background technology
Along with the fast development of China's economy is increasing to the consumption of the energy, increasing to the pollutant in atmosphere by chemical combustion emit energy system.In recent years, according to the environmental monitoring data of each big and medium-sized cities, PM2.5 severe overweight situation happens occasionally, and city haze weather occurs on a large scale repeatedly.These all show, have become the major pollutants of China's city atmospheric environment take PM2.5 as main fine particle.PM2.5 refers to the suspension fine grained that gas-kinetic diameter is less than 2.5 microns, it is rich in noxious material and atmospheric residence time is long, fed distance is far away, not only reduce atmospheric visibility, affected traffic, natural environment and climate, and health has been had to the serious harm of short-term and long-term accumulated.Development Combustion Energy origin system novel dust removing emission-reduction technology becomes the key fundamentally addressing this problem.
Existing dust-removal emission reduction technology is as all very low to the elimination efficiency of 5 microns of following particles in electrostatic precipitator, cyclone dust collectors, sack cleaner and wet scrubber etc., or have that financial cost is high, narrow application range, processing flow be limited or because transformation affect the problems such as energy system operation, cannot fully meet PM2.5 and reduce discharging the demand of control.Emission-reduction technology based on acoustic agglomerator principle is the good approach of generally acknowledging at present.Within a short period of time is through the effect of high strength sound wave, and the following fine grained of micron in flue gas is collided mutually, and then adheres to and form some microns aggregates above, then by conventional cleaner, aggregate removed.The acoustic agglomerator dustproof function time is short, effect remarkable, economy is easy-to-use and can adapt to high temperature, high pressure and corrosive atmosphere, will in China's present stage air pollution treatment, play a significant role.
Domestic available technical grade acoustic agglomerator emission-reducing system is also more rare at present.Great majority reduce discharging data from undersized principle confirmatory experiment in laboratory.Openly the highest semi-industrial scale power that system produces of power only has 1600W(Rodriguez J J, et al.Acoustic agglomeration for electrostatic retention of fly-ashes at pilot scale:influence of intensity of sound field at different conditions.Journal of aerosol science, 1996,21:621-622), sound field intensity is not high, and emission reduction effect and scale are limited.The reason such as flue gas type, Size Distribution be changeable in the complexity of suspended particulate acoustic agglomerator problem itself and reality, support high-power, high sound intensity environment that technical grade emission-reducing system needs, need to consider efficiency of dust collection, economy, stability and noise control problem, be embodied in design realization and the technical scheme of the aspects such as strong sound produces, cohesion cabin structure, sound field control and the system integration, Monitoring and Controlling.
Summary of the invention
Technical problem to be solved by this invention is: the deficiency existing for prior art, fine particle emission reduction device in a set of Combustion Energy origin system flue gas that utilized acoustic agglomerator principle design.This device makes full use of the principle that acoustic agglomerator efficiency sharply raises with sound pressure level increase, by supporting to three kinds of high-power air-flow sound sources and varying-arca channel, and rely on unified Measurement &control computer to regulate and optimizes operational factor.Whole implementation has advantage aspect emission reduction efficiency, economy, applicability, pollution-free and extensibility.
Emission reduction device of the present invention comprises as lower member:
A kind of Combustion Energy origin system fine particle emission reduction device based on acoustic agglomerator principle, it is characterized in that comprising with lower member: the high pressure draught source of supplying with high pressure draught, the high pressure mixing chamber of stable high voltage air-flow, it is the air-flow sound source of signal specific strong sound wave by high pressure draught power conversion, an adpting flange, by the air-flow sound source radiative acoustic wave energy horn that pipeline is carried downstream, for realizing the synthetic coupling cabin uiform section section of strong acoustic resonance and coupling cabin contraction section, discharge the high pressure draught exhaust outlet that has utilized complete high pressure draught in coupling cabin, hold flue gas and make it be subject to the cohesion cabin of strong sound wave effect, No. two adpting flanges, realize the entrant sound plate that high pressure draught separates with strong sound wave, under large flue gas flow condition, make to condense the barrier structure that keeps plane standing-wave condition in cabin, the flue gas exhaust mouth of flue gas after input Combustion Energy origin system produces the smoke air inlet of flue gas and discharges cohesion, for expansion tank and the removable end face of auxiliary adjustment cohesion cabin acoustic resonance frequency, adjusting screw(rod), screw rod operating mechanism, No. three adpting flanges, No. four adpting flanges, expansion tank sealing plate, for removing the conventional deduster of large particle diameter aggregate,
The gas outlet in high pressure draught source is connected with the inlet seal of high pressure mixing chamber, the outlet of high pressure mixing chamber is connected with the inlet seal of each air-flow sound source respectively by the pipeline of a point three, the outlet of each air-flow sound source is connected with the inlet seal of horn by an adpting flange, horn outlet is tightly connected with one end of coupling cabin uiform section section, the other end of coupling cabin uiform section section is tightly connected with coupling compare great one end, contraction section cross section, cabin, coupling compare little one end, contraction section cross section, cabin is tightly connected with cohesion one end, cabin by No. two adpting flanges, between No. two adpting flanges, entrant sound plate is installed, the cohesion cabin other end is tightly connected by No. three adpting flanges and expansion tank, cohesion cabin is provided with smoke air inlet near the top of No. two adpting flange one end, bottom near No. three adpting flange one end is provided with flue gas exhaust mouth, cohesion is provided with barrier structure in cabin, described barrier structure is between smoke air inlet and flue gas exhaust mouth, removable end face is installed in expansion tank, this removable end face is connected with screw rod operating mechanism by adjusting screw(rod), screw rod operating mechanism is connected with central Measurement &control computer by cable, be used for controlling removable end face moves left and right in expansion tank, in order to regulate the acoustic resonance frequency of cohesion cabin and expansion tank, expansion tank is by being arranged on No. four expansion tank sealing plate sealings on adpting flange, described adjusting screw(rod) is connected with screw rod operating mechanism through expansion tank sealing plate central opening, flue gas exhaust mouth is connected with conventional deduster by connecting pipe, pending flue gas flows into through smoke air inlet, discharge after conventional deduster is processed by flue gas exhaust mouth,
Also comprise air chamber pressure sensor, a flow sensor, No. two flow sensors, a microphone, No. two microphones, humidity temperature pickup, a sampling and particle diameter spectrometer, No. two samplings and particle diameter spectrometer, wherein air chamber pressure sensor is positioned at high pressure mixing chamber, No. one flow sensor is arranged on high pressure mixing chamber exit, be respectively used to pressure and the flow of the high pressure draught of measuring the generation of high pressure draught source, No. one microphone is positioned at coupling cabin uiform section section, for the acoustic pressure in the uiform section section of measuring coupling cabin, a sampling and particle diameter spectrometer, No. two flow sensors and humidity temperature pickup are positioned at the pipeline of carrying Combustion Energy origin system to produce flue gas, are respectively used to measure input flue gas concentration, particle diameter distributes, flow, temperature and humidity, No. two microphone is positioned at cohesion cabin, for measuring the acoustic pressure in cohesion cabin, No. two samplings are positioned at and are connected flue gas exhaust mouth and conventional pipeline of dust collector with particle diameter spectrometer, be used for measuring output flue gas concentration and particle diameter and distribute, above-mentioned data sensor equipment is all connected with central Measurement &control computer by data wire.
Preferably, described high pressure draught source is air compressor or high-pressure air feed source, and available air-flow power is not less than 5 myriawatts.
Preferably, described air-flow sound source is high pressure siren, the strong acoustic generator of resonant mode or modulation air-flow sound source; Described high pressure siren is by the motor drive controller control being connected with central Measurement &control computer by cable, the strong acoustic generator of described resonant mode is by the servo mechanism controller control being connected with central Measurement &control computer by cable, and described modulation air-flow sound source is by the random wave signal generator and the power amplifier control that are connected with central Measurement &control computer by cable.
Preferably, described conventional deduster is electrostatic precipitator, sack cleaner or cyclone dust collectors.
Preferably, described emission reduction device also comprises and can produce the ultrasonic atomizer of cleaning additive and in order to realize the well-mixed smog hybrid chamber of pending flue gas and this cleaning additive; Described smog hybrid chamber is arranged on the admission line being connected with smoke air inlet, described ultrasonic atomizer is connected in by pipeline on the smoke inlet pipe road of carrying Combustion Energy origin system, and now humidity temperature pickup is for connecting in the pipeline between ultrasonic atomizer and smog hybrid chamber.
Preferably, described emission reduction device also comprises a silencer that is installed on respectively high pressure draught exhaust outlet, smoke air inlet and flue gas exhaust mouth, No. two silencers and No. three silencers, be installed on the sound insulating layer of horn, coupling cabin uiform section section, coupling cabin contraction section, cohesion cabin and expansion tank outer wall, and at the sound absorption environment of whole emission reduction device peripheral disposition.
Preferably, described emission reduction device also comprises and is installed on the optical window of cohesion bottom, cabin wall near flue gas exhaust mouth position and offside, light source and the illumination photometer of optical window outside are also fixed in upper and lower both sides, cohesion cabin, office, described illumination photometer is connected with central Measurement &control computer by data wire, realizes auxiliary monitoring suspension fine particle state of aggregation by measuring flue gas visibility.
Preferably, the horn of described emission reduction device, coupling cabin uiform section section, coupling cabin contraction section, cohesion cabin and expansion tank wall thickness in 0.01m to 0.05m scope, the preferred cast iron of wall, the metal material that carbon steel or stainless steel isodensity is larger; Entrant sound plate is a solid thin plate, and its thickness is in 0.002m to 0.004m scope, and its area is not less than cohesion cabin sectional area S
2, the light metal materials such as the preferred aluminium of entrant sound plate material, titanium.
Combustion Energy origin system fine particle emission reduction device based on acoustic agglomerator principle of the present invention, its specific works process is as follows:
(1) first measure input flue gas concentration and particle size distribution data by a sampling and particle diameter spectrometer, measure input flue gas flow data by No. two flow sensors, measure input flue-gas temperature and humidity data by humidity temperature pickup, and by extremely central Measurement &control computer of the transfer of data measuring, central Measurement &control computer is by the optimum operating condition (comprising sound pressure level, frequency and acoustical signal) of this emission reduction device operation of operation acoustic agglomerator Model and experiment database automatic Prediction thereon;
(2) emission reduction device comprises three kinds of high-power air-flow sound sources, is respectively high pressure siren, the strong acoustic generator of resonant mode and modulation air-flow sound source.According to step (1) measurement result, judge the airflow noise Source Type that should adopt and provide pressure, the data on flows of controlling data and high pressure draught source by central Measurement &control computer: if be chosen as high pressure siren, the outlet of high pressure siren is connected with horn, send control signal by central Measurement &control computer control motor drive controller to high pressure siren, start high pressure siren; If be chosen as resonance generator, resonance generator outlet is connected with horn, regulate the strong acoustic generator geometric parameter of resonant mode by central Measurement &control computer control servo mechanism controller, start resonance generator; If be chosen as modulation air-flow sound source, will modulate the outlet of air-flow sound source and be connected with horn, provide the corresponding electric signal after amplification by central Measurement &control computer control random wave signal generator and power amplifier to modulation air-flow sound source, start modulation air-flow sound source;
(3) start high pressure draught source, after the high pressure draught that high pressure draught source is produced is sent into high pressure mixing chamber current stabilization by gas pipeline, input corresponding air flow sound source;
(4) strong sound wave that air-flow sound source is specific waveforms by high pressure draught Conversion of Energy, pressure and data on flows that refer step (2) provides, the data that provide according to air chamber pressure sensor and flow sensor, regulate high pressure draught source, make the acoustical signal of No. two microphone measurements consistent with step (1) prediction operating mode;
(5) through air-flow sound source transform after strong sound wave by horn to coupling cabin in radiative acoustic wave energy, utilize complete air-flow to discharge via the exhaust outlet that is arranged on coupling top, cabin, strong sound wave enters cohesion cabin and form the strong sound field of plane standing wave in cohesion cabin through entrant sound plate;
(6) regulate vertically cohesion cabin end face by screw rod operating mechanism, until the difference maximum of No. two microphones and a sound pressure level that microphone is surveyed, sound field reaches resonance state;
(7) input by smoke air inlet the flue gas that Combustion Energy origin system produces, flue gas carries out pretreatment with strong sound wave after entering cohesion cabin in cohesion cabin, distributes to meet to reduce discharging and expects until No. two samplings and particle diameter spectrometer are surveyed flue gas particles particle diameter;
(8) the conventional dust arrester of flowing through after flue gas exhaust mouth output through the pretreated flue gas of strong sound wave is for further processing, and completes the removing of large particle diameter aggregate.
In order to obtain better dust removing effects, in described step (7), also can add following steps: start ultrasonic atomizer and input fog in smog hybrid chamber, after the flue gas that Combustion Energy origin system produces fully mixes with fog in smog hybrid chamber, flow into cohesion cabin through smoke air inlet.
The frequency range of strong sound wave that the present invention utilizes is 800Hz to 5000Hz, the power that uses be air-flow sound source more than myriawatt magnitude, can produce single-frequency or the strong acoustical signal of combination frequency in this frequency range.Signal sound is arbitrarily downgraded and is not less than 155dB.Horn minimum cutoff is not higher than 300Hz.
The cross section of each air-flow and strong sound passage in this emission reduction device (comprising horn, coupling cabin uiform section section, coupling cabin contraction section, cohesion cabin and expansion tank) is square, its concrete size (as shown in Figure 3) can be definite according to flue gas flow rate U and strong sound wave sound pressure level SPL, action time T in known pending maximum flue gas volume flow Q, cohesion cabin, and detailed process is as follows:
Cohesion cabin sectional area S
2for Q/U m
2, cohesion cabin length L
2be not less than T*U m.And then obtain sound power of a source W and air-flow power W
0:
W
0=W/η
(2)
Wherein η is the conversion efficiency of air-flow sound source.The discharge area S of air-flow sound source
0:
S
0=W/10
7 (3)
The sectional area S of coupling cabin uiform section section
1for cohesion cabin sectional area S
24 to 16 times.The length L of coupling cabin uiform section section
1be not less than the wavelength that this emission reduction device operating frequency lower limit (being 800Hz) is corresponding:
L
1≥c
0/800 (4)
Wherein c
0for THE VELOCITY OF SOUND IN AIR, be 340m/s.
Coupling cabin contraction section profile is positive truncated rectangular pyramids.The length L of coupling cabin contraction section
3(wherein θ
1for the angle of coupling contraction section side, cabin and axis):
Horn profile comprises four walls, and wherein two of upper and lowers wall is straight flange, and another two walls are curved side, and curved side shape line can be straight line, hyperbola or exponential line; The discharge area S of horn inlet area and air-flow sound source
0identical, horn discharge area and coupling cabin uiform section section area S
1identical.The length L of horn
0(wherein θ
2for the angle of horn side and axis):
Groined type barrier structure is installed to keep meeting plane standing-wave condition in cabin in cohesion cabin, wherein barrier structure is square, its each unit length of side L in each unit on the cross section of looking along cohesion cabin axis
4be not more than c
0/ (2f), f is emission reduction device operating frequency.
Expansion tank sectional area S
3equal to condense cabin sectional area S
2, expansion tank length L
5be not less than the half of this emission reduction device operating frequency lower limit (being 800Hz) corresponding wavelength.
The wall thickness of the each air-flow of this emission reduction device and strong sound passage (comprising horn, coupling cabin uiform section section, coupling cabin contraction section, cohesion cabin and expansion tank) is in 0.01m to 0.05m scope, to avoid the impact of pipe vibration on coacervation process, the preferred cast iron of wall, the metal material that carbon steel or stainless steel isodensity is larger.Entrant sound plate is a solid thin plate, and its thickness is in 0.002m to 0.004m scope, and its area is not less than cohesion cabin sectional area S
2.The light metal materials such as the preferred aluminium of entrant sound plate material, titanium.
The heavyweight acoustic agglomerator emission reduction device that adopts the present invention to propose, has following beneficial effect:
(1) more than, flow above by gauge pressure 2atm is greater than 3kg/s(air-flow power 5 myriawatts) high pressure draught drive high-power air-flow sound source, produce acoustical power more than 1 myriawatt, reduce discharging with the acoustic agglomerator of realizing the large flow flue gas of technical grade.
(2) the air-flow sound source of three kinds of different qualities of employing produces the high power strong sound wave of unlike signal feature, to adapt to the fine grained characteristic of dissimilar flue gas; It is synthetic that the design combining with varying-arca channel by high-power air-flow sound source realizes strong acoustic resonance, in large scale cohesion cabin, concentrates sound pressure level higher than 160dB and the lower strong sound field of harmonic ratio, significantly strengthens acoustic agglomerator emission reduction efficiency and shorten the reduction of discharging time.
(3) adopt sound field longitudinally to drive the composite cabin body design in gradual change cross section, acoustics rate is consistent frequently with cabin resonance body to make emission reduction device operating frequency by dynamic adjustments duct length, realize the optimum transfer efficiency of strong sound wave from sound source to cohesion cabin, strengthen the capacity usage ratio of dust-removal emission reduction.
(4) adopt gas sound separating thought, avoid the adverse effect of high pressure draught to suspended particulate acoustic agglomerator process, and do not affecting under strong sound field characteristic prerequisite, realize the cohesion cabin design of relative compact.
(5) adopt square constant section duct, the physical dimension of each air-flow and strong sound passage (comprising horn, coupling cabin uiform section section, coupling cabin contraction section, cohesion cabin and expansion tank) is adjusted flexibly according to described method for designing; Emission reduction device can laterally walk abreast as single reduction of discharging module or longitudinal Serial Extension, meets the demand of different capacity magnitude and pending flue gas flow energy resource system.
(6) emission reduction device is at each air inlet, blast pipe series connection silencer, and each pipeline outer wall installs sound insulation and absorbent treatment additional, avoids the impact of high intensity noise on environment.
(7) the sensing data passage that emission reduction device comprises flow, air pressure, acoustic pressure, particle concentration and particle diameter distribution, optics visibility, temperature, humidity and air-flow sound source, cohesion cabin parameter control channel, rely on unified central Measurement &control computer real-time dynamic monitoring emission reduction effect, optimize operational factor, strengthen the applicability of emission reduction device to dissimilar flue gas.
Accompanying drawing explanation
Fig. 1 is the Combustion Energy origin system fine particle emission reduction device structure composition diagram based on acoustic agglomerator principle of the present invention;
Fig. 2 is the Combustion Energy origin system fine particle emission reduction device observing and controlling graph of a relation based on acoustic agglomerator principle of the present invention;
Fig. 3 is the Combustion Energy origin system fine particle emission reduction device body passageways physical dimension schematic diagram based on acoustic agglomerator principle of the present invention;
Fig. 4 is the Combustion Energy origin system fine particle emission reduction device body passageways structure partial schematic diagram based on acoustic agglomerator principle of the present invention.
The specific embodiment
The operation principle of emission reduction device of the present invention is summarized as follows in conjunction with Fig. 1:
By high pressure draught source 1(air compressor or high-pressure air feed source) high pressure draught that provides enters high pressure mixing chamber 2, in high pressure mixing chamber to after high pressure draught pressure current stabilization, select to enter high pressure siren 4, the strong acoustic generator 5 of resonant mode or modulation air-flow sound source 6 according to definite optimum operating condition, be strong sound wave by high pressure draught Conversion of Energy in said flow sound source; This strong sound wave can adopt straight line, hyperbola or exponential line by horn 7(horn type line) enter coupling cabin uiform section section 8 and coupling cabin contraction section 9, after synthesizing amplification through resonating in coupling cabin, pass again entrant sound plate 10, then condensing cabin 11 underexcitations and under the effect of barrier structure 39, forming plane standing-wave sound field, utilizing complete high pressure draught to discharge from the high pressure draught exhaust outlet 13 at coupling uiform section section 8 tops, cabin; Controlling to adjust screw rod 41 by screw rod operating mechanism 34 drives removable end face 40 interior the moving axially along expansion tank 44 of expansion tank 44, shift motion is not less than 1/2 of emission reduction device operating frequency lower limit (being 800Hz) corresponding wavelength, to regulate the acoustic resonance frequency of cohesion cabin 11 and expansion tank 44, make it consistent with sound source operating frequency.
Pending flue gas enters cohesion cabin 11 through smoke air inlet 17, and along barrier structure 39 axially slowly to cohesion cabin 11 downstream flow, be not more than in the time under the strong sound wave effect of 10 seconds, molecule cohesion in flue gas becomes the aggregate of large-size, flue gas particle diameter has distributed from small size to large-sized differentiation, and pretreated flue gas is discharged from flue gas exhaust mouth 18, then after conventional deduster 20 is further processed, aggregate in flue gas is fully removed, and completes the reduction of discharging of fine particle.
In addition, emission reduction device provided by the invention can also be realized strong sound wave and cleaning additive acting in conjunction further to strengthen emission reduction effect, concrete grammar is as follows: choose 5 microns of following water spray haze colloidal sols as cleaning additive, this cleaning additive is produced by the ultrasonic atomizer 16 of large flow, after pending flue gas fully mixes with cleaning additive in smog hybrid chamber 43, input by smoke air inlet 17, and complete sonic agglomeration process in cohesion cabin 11.
In order to strengthen, dissimilar, particle diameter is distributed and the applicability of composition flue gas, convenient real-time monitoring and adjusting to flue gas emission reduction effect, this emission reduction device also comprises multi-channel data transducing part and multichannel center-control part, and its composition and annexation are as shown in Figure 2.Multi-channel data transducing part comprises the air chamber pressure sensor 21 that is positioned at high pressure mixing chamber 2, a flow sensor 22 in high pressure mixing chamber 2 exits, be positioned at a microphone 27 of coupling cabin uiform section section 8, be positioned at No. two flow sensors 28 in the smoke inlet pipe road being connected with smoke air inlet 17, a sampling and particle diameter spectrometer 32, humidity temperature pickup 29 between ultrasonic atomizer 16 and smog hybrid chamber 43 in pipeline, be positioned at the optical window 38 that condenses 11 tops, cabin and bottom and light source 30 and the illumination photometer 31 that is separately positioned on this window above and below, described optical window 38, light source 30 and illumination photometer 31 are for measuring flue gas visibility with the auxiliary monitoring flue gas fine grain state of aggregation that suspends.Be positioned at No. two microphones 33 in cohesion cabin 11, be positioned at No. two samplings and particle diameter spectrometer 35 that connect flue gas exhaust mouth 18 and conventional deduster 20 pipelines; Multichannel center-control part comprises the motor drive controller 23 that high pressure siren 4 operational factors are set, for regulating the servo mechanism controller 24 of strong acoustic generator 5 geometric parameters of resonant mode, for driving and arrange power amplifier 25 and the random wave signal generator 26 of modulation air-flow sound-source signal.Described multi-channel data transducing part is all connected with central Measurement &control computer 12 by data wire, described multichannel center-control part is all connected with central Measurement &control computer 12 by cable, and all sensing datas and control instruction are all processed automatically by central Measurement &control computer 12 is unified.
For fear of leakage and the pollution of cohesion cabin 11 interior strong sound waves, this emission reduction device has also adopted multiple sound insulation de-noising parts (as shown in Figure 2): at silencer 14 of high pressure draught exhaust outlet 13 places' installations, at smoke air inlet 17 No. two silencers 15 of places' installation with at No. three silencers 19 of flue gas exhaust mouth 18 places' installations, each silencer sphere of action is consistent with strong acoustic frequency scope; With the outer wall in coupling cabin contraction section 9, cohesion cabin 11, the sphere of action sound insulating layer 37 consistent with strong acoustic frequency scope is all installed in horn 7, coupling cabin uiform section section 8, whole emission reduction device peripheral disposition has sound-absorbing material 36.
The body passageways structure of emission reduction device provided by the present invention comprises horn 7, coupling cabin uiform section section 8, coupling cabin contraction section 9, cohesion cabin 11 and expansion tank 44, as shown in Figure 1 and Figure 4: coupling cabin uiform section section 8 and coupling cabin contraction section 9, cohesion cabin 11, the cross section of expansion tank 44 is square, air-flow sound source and horn 7 entrances are tightly connected by an adpting flange 3, contraction section 9 outlets of coupling cabin are tightly connected by No. two adpting flanges 42 with cohesion 11 one end, cabin, cohesion cabin 11 other ends and expansion tank 44 one end are tightly connected by No. three adpting flanges 45, No. four adpting flanges of expansion tank 44 other end 46 and expansion tank sealing plate 47 connecting sealeds, between No. two adpting flanges 42, entrant sound plate 10 is installed, realizes from coupling cabin contraction section 9 to the cohesion high pressure draught in cabin 11 and separating of strong sound wave, cohesion 11 inside, cabin are provided with barrier structure 39 between smoke air inlet 17 and flue gas exhaust mouth 18, condense the plane standing-wave sound field in cabin 11 for realizing under large flue gas flow condition.
Claims (8)
1. the Combustion Energy origin system fine particle emission reduction device based on acoustic agglomerator principle, it is characterized in that comprising with lower member: the high pressure draught source (1) of supplying with high pressure draught, the high pressure mixing chamber (2) of stable high voltage air-flow, it is the air-flow sound source (4 of signal specific strong sound wave by high pressure draught power conversion, 5, 6), an adpting flange (3), by air-flow sound source (4, 5, 6) the radiative acoustic wave energy horn (7) that pipeline is carried downstream, for realizing the synthetic coupling cabin uiform section section (8) of strong acoustic resonance and coupling cabin contraction section (9), discharge the high pressure draught exhaust outlet (13) that has utilized complete high pressure draught in coupling cabin, hold flue gas and make it be subject to the cohesion cabin (11) of strong sound wave effect, No. two adpting flanges (42), realize the entrant sound plate (10) that high pressure draught separates with strong sound wave, under large flue gas flow condition, make to condense the barrier structure (39) that keeps plane standing-wave condition in cabin, the flue gas exhaust mouth (18) of flue gas after input Combustion Energy origin system produces the smoke air inlet (17) of flue gas and discharges cohesion, for expansion tank (44) and the removable end face (40) of auxiliary adjustment cohesion cabin acoustic resonance frequency, adjusting screw(rod) (41), screw rod operating mechanism (34), No. three adpting flanges (45), No. four adpting flanges (46), expansion tank sealing plate (47), for removing the conventional deduster (20) of large particle diameter aggregate,
The gas outlet in high pressure draught source (1) is connected with the inlet seal of high pressure mixing chamber (2), the pipeline of the outlet of high pressure mixing chamber (2) by one one point three respectively with each air-flow sound source (4, 5, 6) inlet seal connects, each air-flow sound source (4, 5, 6) outlet is connected with the inlet seal of horn (7) by an adpting flange (3), horn (7) outlet is tightly connected with one end of coupling cabin uiform section section (8), the other end of coupling cabin uiform section section (8) is tightly connected with coupling compare great one end, cabin contraction section (9) cross section, coupling compare little one end, cabin contraction section (9) cross section is tightly connected by No. two adpting flanges (42) and cohesion one end, cabin (11), entrant sound plate (10) is installed between No. two adpting flanges (42), cohesion cabin (11) other end is tightly connected by No. three adpting flanges (45) and expansion tank (44), cohesion cabin (11) is provided with smoke air inlet (17) near the top of No. two adpting flanges (42) one end, bottom near No. three adpting flanges (45) one end is provided with flue gas exhaust mouth (18), in cohesion cabin (11), barrier structure (39) is installed, described barrier structure (39) is positioned between smoke air inlet (17) and flue gas exhaust mouth (18), removable end face (40) is installed in expansion tank (44), this removable end face (40) is connected with screw rod operating mechanism (34) by adjusting screw(rod) (41), screw rod operating mechanism (34) is connected with central Measurement &control computer (12) by cable, be used for controlling removable end face (40) moves left and right in expansion tank (44), to regulate the acoustic resonance frequency of cohesion cabin (11) and expansion tank (44), expansion tank (44) is by being arranged on expansion tank sealing plate (47) sealing on No. four adpting flanges (46), described adjusting screw(rod) (41) is connected with screw rod operating mechanism (34) through expansion tank sealing plate (47) central opening, flue gas exhaust mouth (18) is connected with conventional deduster (20) by connecting pipe, pending flue gas flows into through smoke air inlet (17), discharge by flue gas exhaust mouth (18) (20) after conventional deduster is processed,
Also comprise air chamber pressure sensor (21), a flow sensor (22), No. two flow sensors (28), a microphone (27), No. two microphones (33), humidity temperature pickup (29), a sampling and particle diameter spectrometer (32), No. two samplings and particle diameter spectrometer (35), wherein air chamber pressure sensor (21) is positioned at high pressure mixing chamber (2), a flow sensor (22) is arranged on high pressure mixing chamber (2) exit, be respectively used to pressure and the flow of the high pressure draught of measuring the generation of high pressure draught source, a microphone (27) is positioned at coupling cabin uiform section section (8), for the acoustic pressure in measuring coupling cabin uiform section section (8), a sampling and particle diameter spectrometer (32), No. two flow sensors (28) are positioned at humidity temperature pickup (29) pipeline of carrying Combustion Energy origin system to produce flue gas, be respectively used to measure input flue gas concentration, particle diameter distributes, flow, temperature and humidity, No. two microphones (33) are positioned at cohesion cabin (11), be used for measuring the acoustic pressure in cohesion cabin (11), No. two samplings are positioned at particle diameter spectrometer (35) pipeline that is connected flue gas exhaust mouth (18) and conventional deduster (20), being used for measuring output flue gas concentration and particle diameter distributes, above-mentioned data sensor equipment is all connected with central Measurement &control computer (12) by data wire.
2. the Combustion Energy origin system fine particle emission reduction device based on acoustic agglomerator principle as claimed in claim 1, is characterized in that: described high pressure draught source (1) is air compressor or high-pressure air feed source, and available air-flow power is not less than 5 myriawatts.
3. the Combustion Energy origin system fine particle emission reduction device based on acoustic agglomerator principle as claimed in claim 1, it is characterized in that: described air-flow sound source (4,5,6) be high pressure siren (4), the strong acoustic generator of resonant mode (5) or modulation air-flow sound source (6); Described high pressure siren (4) is controlled by the drive motor controller (23) being connected with central Measurement &control computer (12) by cable, the strong acoustic generator of described resonant mode (5) is controlled by the servo mechanism controller (24) being connected with central Measurement &control computer (12) by cable, and described modulation air-flow sound source (6) is controlled by the random wave signal generator (25) being connected with central Measurement &control computer (12) by cable and power amplifier (26).
4. the Combustion Energy origin system fine particle emission reduction device based on acoustic agglomerator principle as claimed in claim 1, is characterized in that: described conventional deduster (20) is electrostatic precipitator, sack cleaner or cyclone dust collectors.
5. the Combustion Energy origin system fine particle emission reduction device based on acoustic agglomerator principle as claimed in claim 1, is characterized in that: also comprise producing the ultrasonic atomizer (16) of cleaning additive and in order to realize the well-mixed smog hybrid chamber of pending flue gas and this cleaning additive (43); Described smog hybrid chamber (43) is arranged on the admission line being connected with smoke air inlet (17), described ultrasonic atomizer (16) is connected on the admission line of carrying Combustion Energy origin system flue gas by connecting pipe, and now humidity temperature pickup (29) is positioned at for connecting the pipeline between ultrasonic atomizer (16) and smog hybrid chamber (43).
6. the Combustion Energy origin system fine particle emission reduction device based on acoustic agglomerator principle as claimed in claim 1, it is characterized in that: also comprise and be installed on respectively high pressure draught exhaust outlet (13), a silencer (14) of smoke air inlet (17) and flue gas exhaust mouth (18), No. two silencers (15) and No. three silencers (19), be installed on horn (7), coupling cabin uiform section section (8), coupling cabin contraction section (9), the sound insulating layer (37) of cohesion cabin (11) and expansion tank (44) outer wall, and at the sound absorption environment (36) of whole emission reduction device peripheral disposition.
7. the Combustion Energy origin system fine particle emission reduction device based on acoustic agglomerator principle as claimed in claim 1, it is characterized in that: also comprise and be installed on the optical window (38) of cohesion bottom, cabin (11) wall near flue gas exhaust mouth (18) position and offside top wall, optical window (38) outside light source (30) and illumination photometer (31) are also fixed in upper and lower both sides, cohesion cabin, office (11), described illumination photometer (31) is connected with central Measurement &control computer (12) by data wire, realize auxiliary monitoring suspension fine particle state of aggregation by measuring flue gas visibility.
8. the Combustion Energy origin system fine particle emission reduction device based on acoustic agglomerator principle as claimed in claim 1, it is characterized in that: described horn (7), coupling cabin uiform section section (8), coupling cabin contraction section (9), cohesion cabin (11) and the wall thickness of expansion tank (44) in 0.01m to 0.05m scope, the preferred cast iron of wall, carbon steel and the larger metal material of stainless steel isodensity; Entrant sound plate (10) is a solid thin plate, and its thickness is in 0.002m to 0.004m scope, and area is not less than cohesion cabin (11) sectional area S
2, the light metal materials such as the preferred aluminium of material, titanium.
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