CA2097070A1 - Acoustic chamber for the aerosol treatment of exhaust gases - Google Patents
Acoustic chamber for the aerosol treatment of exhaust gasesInfo
- Publication number
- CA2097070A1 CA2097070A1 CA 2097070 CA2097070A CA2097070A1 CA 2097070 A1 CA2097070 A1 CA 2097070A1 CA 2097070 CA2097070 CA 2097070 CA 2097070 A CA2097070 A CA 2097070A CA 2097070 A1 CA2097070 A1 CA 2097070A1
- Authority
- CA
- Canada
- Prior art keywords
- chamber
- sound
- acoustic
- exhaust gases
- sound sources
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B3/00—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D49/00—Separating dispersed particles from gases, air or vapours by other methods
- B01D49/006—Separating dispersed particles from gases, air or vapours by other methods by sonic or ultrasonic techniques
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J19/10—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing sonic or ultrasonic vibrations
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Organic Chemistry (AREA)
- Exhaust Silencers (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention relates to an acoustic chamber (3, 6, 7) for the aerosol treatment of exhaust gases, which are to flow through the chamber and which are exposed therein to an acoustic field.
According to the invention, the chamber has a regular polygonal cross-section and the sound sources (4, 5) transmit sound waves into thechamber under such an angle that the sound is repeatedly reflected from the walls of the chamber before it hits on the other end of the chamber a sound reflector (8, 9). Due to the intensive irradiation, fine dust particles are put into vibration and coagulate to larger grains, which can then be filtered away.
According to the invention, the chamber has a regular polygonal cross-section and the sound sources (4, 5) transmit sound waves into thechamber under such an angle that the sound is repeatedly reflected from the walls of the chamber before it hits on the other end of the chamber a sound reflector (8, 9). Due to the intensive irradiation, fine dust particles are put into vibration and coagulate to larger grains, which can then be filtered away.
Description
WS> 92i093~;4 2 0 9 7 0 7 0 PCI/EP91/0~711 TITLE OF THE INVENTION
An acoustic chamber for the aerosol treatment of exhaust gases .
The invention relates to an acoustic chamber for the aerosol treatment of exhaust gases, which are to flow through the chamber and which are exposed therein to an acoustic field.
FIELD OF THE INVENTION
Exhaust gases often contain very fine solid particles, the rate of which is to be reduced as much as possible before the exhaust gases are freed into the environment. Up to now! such - dust filters use either electrostatic fields or mechanical processes (cyclone or venturi separators) which are very ex-pensive and the filter effectiveness of which remains limited.
BACKGROVND OF THE INVENTION
, From Spanish patent 459 523 a proposal is known to use an ultrasound chamber for the cleaning of fumes. In this patent, a sound field is produced in a tuke axially to its axis and the gases to be cleaned are heli~ally led through the tube, the particles being put into vibration and interaction by the sound field, so that they agglomerate. Then, the larger par-ticles can be evacuated from the exhaust gases by simple me- ;~
chanical filters.
.
The acoustic ch~nber according to this document is only suited for small fume flow rates, since with greater fl~w rates, the ; helical laminar ]path of the fume-flow chan~es into a turbulent ~ 35 flow. Further, the pressure losses at passing through the -.. .
:::. . . : . . ., ... ::.. . -- , - ,., , . ,,,,. ,.,:
., .. . . .,- . ... . . . . ... .
WO 92J?D93~4 ,, i l; p??CT/EP91/02214 ~g .
~9~ 0~ ~ - 2 - '-_) chamber are important and may rlequire an additional ~fan to finally expulse the exhaust gasles into th~e chlmney.
- ~ ` SUMMARY OF 5'HE INVENTION
The ob~ect of the'~nvention ls to adapt such a chanber,to the use in ~he industrial field, i.ls. with greater flow rates, and at th~e same-time to reduc~e'the pressureilosses in'the.chamber.
~ " .J.~ ! ;f . s, ,~ r ~ 3 ~, This ob~ect'is~achisved'accordin~ to'the''~invention~by;the .
ac?ioustic chamber which comprises the features of l, the-charac-teristic part of claim ~.iContrary.to the known aerosol-cham-ber, the exhauts gases flow through the chamber along itsiaxis in a-straight line, while the'sound''field fills'~the'chamber in a multiply broken way.~Simultaneously,'-~'by`using~`several~.sound'`r sources,'an optimal sonorisation of'^the'chamber~'is achi'eved without the differènt c?ound waves?InfluencIng:each?other'. For ' con~tructional''reasons~'it is u33ful .to~give'the chamber-~a square~or~hexagonal`constant crosis-section~ ?, ~ ,?.~f~
" , ~ Y ~ J~;' By the maasure according to claim'~.3,~`it?becomes possible,~to direct-this-sound sources preciis~ely:to the associated~re1ec-tors,"which laads'to'an'?op~imaI~en~ergy efficiencyO'ip~..?~r??;~ ` ?~ r?.~.
~ ? ~it?~ r ~ c~?~ ~*~ ?~ ?r;l?t~ ~ f~ ~? r7t~-~
. ~ DETAILED DESCRIPTION~'THErINVENTION!~7~lr.
" ) ~ t ~, ;, r ~ f ~ h .f, r7~ ,r.?~ .?i~ .,t r ., ? S¢~??.~?~?,~JI~ ~I
The-lnvention will~now'be described'?'by~means'of-'?a pref2rred ~smbodiment and with~reference:to~~rthe~`~raw$ngs.r~ '; ~ ui--; c~ r ~ s m ~ ? ' ?~ I ~ F ~i~??S~:~ f; r-: ~ r,~ ~ ~ ,?~ I r~, ~?, ~ ~ ? ? ~ t? S ?~?~i ~ 3 i~ f`? ~
-Figure.1 show!3 in per-~p~ctive an outside`visw`of a~'chamber ~?`
according to the inv?antion . ~ ?
.? ( .? ~ ? ~ ? ,~ t~ r.~.?i ? S.? ~ r;
Flgure'2 shows'an axial cross-sacti'on~:*hrough'this:3~chamber.
Figure;3lshows'means'that Gan be used for varying'~the~''length~
: , ' ` ,; , ~ " -~W~2/093~ 2 0 9 7 0 7 0 PCT/EP91/02214~
- 3 - i ) jl of tha chamber between the sound sources and the reflectors.
Figure 1 shows an acoustic chamber according to the..invention for the aerosol treatment of sxhaust gases.~It-is.~integrated into an'lnstallation for cleanin~ fumes and has, in~his~envi-ronment, the task to coagulate t:he fine particles~ito.ilarger dust particles, which can then be separated by a mechanical filter''~not shown). The exhaust gases are supplied~.to the`' chamber Yia an inlet duct 1 in the direction of arrow;2,~ithe ~hamber consisting of three duct portions disposed`,in ali~n-~:
ment, i.e. a'fir~t duct portion 3, on which-'are mounted sound transmitters 4 and 5, a duct portion 6,:in~whichithe inter-action between the sound field and~the'fume particles.is ln-tended to take essentially place, and a duct portion 7,ito which are mounted:sound reflectors 8~and~9.~The~.ducts~ha~e ai ~quare'cross-section!and are traversed'`~linearly3lby~:the;~.f.umes -~without any-en!cumbrance.`~iThe`sound~sources~4~and.'i;5~are'~axso~
- ' ciatad'to and respectively of two adjacent~iisides~of-'~$he~duct portlon 3 and''are-'disposed'in-such-a.way~that thei~iaxis~hits the respective'opposite wall under an'angle of;..for--.example 'Ci.
60.~In`the same'way,'~the re~lectors~8"and;9 are~mounted:``on`
the'duct`portionl-7;'`In-~the cross-section vlew according~.~to;LI'-figure 2, the sound source 4 and the a~sociated reflector 9 as `' well as the'sound field resulting:-tharefrom~in the duct(.1por-25 ' ~';tion`'6`'are represented-~'If the~length of the central-~.duct t,~
portion'6 is-'chosen'appropriately, and if the-~oundssource 4 and the're~lector;are precisely aligned~~to'each'~other,~ his' results-in a'stationary sound field as''indicated.
3 ' - ~ ~ ,? f~ ' Q.; . . i ~ ` ` T `~ } /?' I ~
Figure 2 might~also be~regarded as~an orthogonal'.cross-sec~
' tion, which runs-through'~the sound source~.?5~and'the~reflector ' 8.' The sound'source operates for example.~at~:a:.requency of 20 kHz~and the length;of~the chamber between~the~sound sources and the~`reflectors lies between l andi3 r meters.~ If lower fre-quanciesiareiused, for example lO kHz, a~tationaryr~soundl~' W092/09354 ~CT/~P91/0221~ ~
.~grlQ~ - 4 -field could be produced in a substantially longer chamber of up to 6 meters, which means that the fumes stay longer in the chamber and thus the coagulat.ion effect is increased. The total acoustic power invested is for example 300 Watt, a high-er eff~iciency being possible also in this case with lowerfrequencies.
In order to be able to precisely ætabilize the acoustic length betwQen the sound sources and the reflectors, it is suggested to render the length of the central duct portion 6 slightly variable and to allow this length to be precisely varied. To ~ this end, for example, a double flange, as it is shown in detail in figure 3, is used at one end of the central duct portion. At this point, this duct portion is not directly screwed to thè reflectors or sound sources, but via an inter-- mediary member lO, the length ll of which can be varied in axial direction of the duct by screw bolts 12, the wall conti-nuity being ensured by two wall portions 13 and 14 sliding one on the othsr. The pluraiity of bolts 12 distributed over the duct periphery can be coupled to a common drive motor (not shown) by a chain 15, so that the length variation can be obtained by the operator at any time and in a precise manner.
In order to Xeep the reflection at the duct walls as lossfree as posslble, it is advisable to keep the surface roughness of the inner side of the ducts as low as possible, such that, if poss~ble, there are no protuberances exceeding 1 mm.
The invention is not restricted to the embodiment described by means of the drawings. Thus, ducts wlth hexagonal or even octogonal cross-section can be used and then three or four sound sources can be associated to the three or four facing wall pairs~ It is also possible to invert the direction of sound propagation for all or only for single ones of the acoustic systems consisting of sound transmitter and reflector .~ ~
: . ' ' :' ' ' ': . .
W'`~2/093~4 2 ~ 9 7 0 7 ~ PCT/~P91/0~211 and to dispose the sound transmitters on the side of the duct portion 7 for gas evacuation.
Due to the linear and practically undisturbed flow cross-sec-tion of the chamber for the fume to be filtered, the pressure losses can be kept small, so that there is no need for an additional fan. The chamber can be mounted, as desired, with horizontal, inclined or vertical axis.
An acoustic chamber for the aerosol treatment of exhaust gases .
The invention relates to an acoustic chamber for the aerosol treatment of exhaust gases, which are to flow through the chamber and which are exposed therein to an acoustic field.
FIELD OF THE INVENTION
Exhaust gases often contain very fine solid particles, the rate of which is to be reduced as much as possible before the exhaust gases are freed into the environment. Up to now! such - dust filters use either electrostatic fields or mechanical processes (cyclone or venturi separators) which are very ex-pensive and the filter effectiveness of which remains limited.
BACKGROVND OF THE INVENTION
, From Spanish patent 459 523 a proposal is known to use an ultrasound chamber for the cleaning of fumes. In this patent, a sound field is produced in a tuke axially to its axis and the gases to be cleaned are heli~ally led through the tube, the particles being put into vibration and interaction by the sound field, so that they agglomerate. Then, the larger par-ticles can be evacuated from the exhaust gases by simple me- ;~
chanical filters.
.
The acoustic ch~nber according to this document is only suited for small fume flow rates, since with greater fl~w rates, the ; helical laminar ]path of the fume-flow chan~es into a turbulent ~ 35 flow. Further, the pressure losses at passing through the -.. .
:::. . . : . . ., ... ::.. . -- , - ,., , . ,,,,. ,.,:
., .. . . .,- . ... . . . . ... .
WO 92J?D93~4 ,, i l; p??CT/EP91/02214 ~g .
~9~ 0~ ~ - 2 - '-_) chamber are important and may rlequire an additional ~fan to finally expulse the exhaust gasles into th~e chlmney.
- ~ ` SUMMARY OF 5'HE INVENTION
The ob~ect of the'~nvention ls to adapt such a chanber,to the use in ~he industrial field, i.ls. with greater flow rates, and at th~e same-time to reduc~e'the pressureilosses in'the.chamber.
~ " .J.~ ! ;f . s, ,~ r ~ 3 ~, This ob~ect'is~achisved'accordin~ to'the''~invention~by;the .
ac?ioustic chamber which comprises the features of l, the-charac-teristic part of claim ~.iContrary.to the known aerosol-cham-ber, the exhauts gases flow through the chamber along itsiaxis in a-straight line, while the'sound''field fills'~the'chamber in a multiply broken way.~Simultaneously,'-~'by`using~`several~.sound'`r sources,'an optimal sonorisation of'^the'chamber~'is achi'eved without the differènt c?ound waves?InfluencIng:each?other'. For ' con~tructional''reasons~'it is u33ful .to~give'the chamber-~a square~or~hexagonal`constant crosis-section~ ?, ~ ,?.~f~
" , ~ Y ~ J~;' By the maasure according to claim'~.3,~`it?becomes possible,~to direct-this-sound sources preciis~ely:to the associated~re1ec-tors,"which laads'to'an'?op~imaI~en~ergy efficiencyO'ip~..?~r??;~ ` ?~ r?.~.
~ ? ~it?~ r ~ c~?~ ~*~ ?~ ?r;l?t~ ~ f~ ~? r7t~-~
. ~ DETAILED DESCRIPTION~'THErINVENTION!~7~lr.
" ) ~ t ~, ;, r ~ f ~ h .f, r7~ ,r.?~ .?i~ .,t r ., ? S¢~??.~?~?,~JI~ ~I
The-lnvention will~now'be described'?'by~means'of-'?a pref2rred ~smbodiment and with~reference:to~~rthe~`~raw$ngs.r~ '; ~ ui--; c~ r ~ s m ~ ? ' ?~ I ~ F ~i~??S~:~ f; r-: ~ r,~ ~ ~ ,?~ I r~, ~?, ~ ~ ? ? ~ t? S ?~?~i ~ 3 i~ f`? ~
-Figure.1 show!3 in per-~p~ctive an outside`visw`of a~'chamber ~?`
according to the inv?antion . ~ ?
.? ( .? ~ ? ~ ? ,~ t~ r.~.?i ? S.? ~ r;
Flgure'2 shows'an axial cross-sacti'on~:*hrough'this:3~chamber.
Figure;3lshows'means'that Gan be used for varying'~the~''length~
: , ' ` ,; , ~ " -~W~2/093~ 2 0 9 7 0 7 0 PCT/EP91/02214~
- 3 - i ) jl of tha chamber between the sound sources and the reflectors.
Figure 1 shows an acoustic chamber according to the..invention for the aerosol treatment of sxhaust gases.~It-is.~integrated into an'lnstallation for cleanin~ fumes and has, in~his~envi-ronment, the task to coagulate t:he fine particles~ito.ilarger dust particles, which can then be separated by a mechanical filter''~not shown). The exhaust gases are supplied~.to the`' chamber Yia an inlet duct 1 in the direction of arrow;2,~ithe ~hamber consisting of three duct portions disposed`,in ali~n-~:
ment, i.e. a'fir~t duct portion 3, on which-'are mounted sound transmitters 4 and 5, a duct portion 6,:in~whichithe inter-action between the sound field and~the'fume particles.is ln-tended to take essentially place, and a duct portion 7,ito which are mounted:sound reflectors 8~and~9.~The~.ducts~ha~e ai ~quare'cross-section!and are traversed'`~linearly3lby~:the;~.f.umes -~without any-en!cumbrance.`~iThe`sound~sources~4~and.'i;5~are'~axso~
- ' ciatad'to and respectively of two adjacent~iisides~of-'~$he~duct portlon 3 and''are-'disposed'in-such-a.way~that thei~iaxis~hits the respective'opposite wall under an'angle of;..for--.example 'Ci.
60.~In`the same'way,'~the re~lectors~8"and;9 are~mounted:``on`
the'duct`portionl-7;'`In-~the cross-section vlew according~.~to;LI'-figure 2, the sound source 4 and the a~sociated reflector 9 as `' well as the'sound field resulting:-tharefrom~in the duct(.1por-25 ' ~';tion`'6`'are represented-~'If the~length of the central-~.duct t,~
portion'6 is-'chosen'appropriately, and if the-~oundssource 4 and the're~lector;are precisely aligned~~to'each'~other,~ his' results-in a'stationary sound field as''indicated.
3 ' - ~ ~ ,? f~ ' Q.; . . i ~ ` ` T `~ } /?' I ~
Figure 2 might~also be~regarded as~an orthogonal'.cross-sec~
' tion, which runs-through'~the sound source~.?5~and'the~reflector ' 8.' The sound'source operates for example.~at~:a:.requency of 20 kHz~and the length;of~the chamber between~the~sound sources and the~`reflectors lies between l andi3 r meters.~ If lower fre-quanciesiareiused, for example lO kHz, a~tationaryr~soundl~' W092/09354 ~CT/~P91/0221~ ~
.~grlQ~ - 4 -field could be produced in a substantially longer chamber of up to 6 meters, which means that the fumes stay longer in the chamber and thus the coagulat.ion effect is increased. The total acoustic power invested is for example 300 Watt, a high-er eff~iciency being possible also in this case with lowerfrequencies.
In order to be able to precisely ætabilize the acoustic length betwQen the sound sources and the reflectors, it is suggested to render the length of the central duct portion 6 slightly variable and to allow this length to be precisely varied. To ~ this end, for example, a double flange, as it is shown in detail in figure 3, is used at one end of the central duct portion. At this point, this duct portion is not directly screwed to thè reflectors or sound sources, but via an inter-- mediary member lO, the length ll of which can be varied in axial direction of the duct by screw bolts 12, the wall conti-nuity being ensured by two wall portions 13 and 14 sliding one on the othsr. The pluraiity of bolts 12 distributed over the duct periphery can be coupled to a common drive motor (not shown) by a chain 15, so that the length variation can be obtained by the operator at any time and in a precise manner.
In order to Xeep the reflection at the duct walls as lossfree as posslble, it is advisable to keep the surface roughness of the inner side of the ducts as low as possible, such that, if poss~ble, there are no protuberances exceeding 1 mm.
The invention is not restricted to the embodiment described by means of the drawings. Thus, ducts wlth hexagonal or even octogonal cross-section can be used and then three or four sound sources can be associated to the three or four facing wall pairs~ It is also possible to invert the direction of sound propagation for all or only for single ones of the acoustic systems consisting of sound transmitter and reflector .~ ~
: . ' ' :' ' ' ': . .
W'`~2/093~4 2 ~ 9 7 0 7 ~ PCT/~P91/0~211 and to dispose the sound transmitters on the side of the duct portion 7 for gas evacuation.
Due to the linear and practically undisturbed flow cross-sec-tion of the chamber for the fume to be filtered, the pressure losses can be kept small, so that there is no need for an additional fan. The chamber can be mounted, as desired, with horizontal, inclined or vertical axis.
Claims (4)
1. An acoustic chamber for the aerosol treatment of exhaust gases, which are to flow through the chamber and which are exposed therein to an acoustic field, wherein the chamber has a regular polygonal cross-section with 2k sides and wherein k sound sources are provided, the axes of which, projected on a cross-section plane of the chamber, include an angle of 180/k degree and who are each associated to a respective side wall of the chamber, and that k reflectors are likewise disposed, the sound sources transmitting sound waves into the chamber under such an angle with the chamber axis that the sound is repeatedly reflected from the walls of the chamber before it hits on the other end of the chamber a sound reflector, which is likewise disposed in an inclined position, so that a stationary wave is formed and that the exhaust gases flow through the chamber linearly and along the chamber axis.
2. An acoustic chamber according to claim 1, wherein k is two or three.
3. An acoustic chamber according to claim 1, wherein means are provided allowing to change the length of the chamber between the sound sources and the reflectors.
4. An acoustic chamber according to claim 1, wherein the sound sources are capable to excite a sound field at a frequency of below 25 kHz.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU87850A LU87850A1 (en) | 1990-11-27 | 1990-11-27 | ACOUSTIC CHAMBER FOR AEROSOL TREATMENT OF EXHAUST GAS |
| LU87850 | 1990-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2097070A1 true CA2097070A1 (en) | 1992-05-28 |
Family
ID=19731264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2097070 Abandoned CA2097070A1 (en) | 1990-11-27 | 1991-11-25 | Acoustic chamber for the aerosol treatment of exhaust gases |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0488097B1 (en) |
| JP (1) | JPH06509406A (en) |
| CA (1) | CA2097070A1 (en) |
| DE (1) | DE59102932D1 (en) |
| IE (1) | IE913839A1 (en) |
| LU (1) | LU87850A1 (en) |
| PT (1) | PT99614A (en) |
| WO (1) | WO1992009354A1 (en) |
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| CN113982181A (en) * | 2021-10-08 | 2022-01-28 | 江阴市维沃保温材料有限公司 | Double-sided color steel inorganic silicon crystal smoke-preventing and exhaust air pipe plate and processing technology thereof |
| US11291939B1 (en) | 2021-07-13 | 2022-04-05 | Smart Material Printing B.V. | Ultra-fine particle aggregation, neutralization and filtration |
| US11938421B2 (en) | 2016-03-06 | 2024-03-26 | WindplusSonne GmbH | Method and device for separating and/or cleaning aerosols and solid material particles and fibers from gases as well as solid material particles and fibers from liquid materials by acoustophoresis |
| US12005388B2 (en) | 2022-07-26 | 2024-06-11 | Smart Material Printing B.V. | Apparatus and methods for air filtration of HVAC systems |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9114670D0 (en) * | 1991-07-08 | 1991-08-28 | Bicc Plc | Apparatus for processing fluids,especially molten polymers |
| US5769913A (en) * | 1993-03-11 | 1998-06-23 | Consejo Superior Investigaciones Cientificas | Multifrequency acoustic chamber for the agglomeration and separation of particles suspended in gaseous effluents |
| ES2067396B1 (en) * | 1993-03-11 | 1997-11-01 | Consejo Superior Investigacion | MULTIFREQUENCY ACOUSTIC CHAMBER FOR THE AGGLOMERATION AND SEPARATION OF PARTICLES IN SUSPENSION IN GASEOUS EFFLUENTS. |
| US6210470B1 (en) * | 1994-07-28 | 2001-04-03 | The United States Of America As Represented By The Secretary Of The Navy | Ultrasonic gas separator |
| GB2362115A (en) * | 2000-05-12 | 2001-11-14 | Ford Global Tech Inc | Removal of particles from ic engine exhaust gas using sound |
| JP4691718B2 (en) * | 2004-06-02 | 2011-06-01 | 本多電子株式会社 | Separation apparatus and liquid fractionation apparatus using the same |
| JP4691719B2 (en) * | 2004-06-02 | 2011-06-01 | 本多電子株式会社 | Separation apparatus and liquid fractionation apparatus using the same |
| WO2006091136A1 (en) * | 2005-02-24 | 2006-08-31 | Volvo Technology Corporation | Arrangement and method for removal of particulates in a gas flow |
| US9079127B2 (en) | 2010-06-04 | 2015-07-14 | Empire Technology Development Llc | Acoustically driven nanoparticle concentrator |
| NL1039051C2 (en) * | 2011-09-19 | 2013-03-21 | Stichting Wetsus Ct Excellence Sustainable Water Technology | Filter and filtration method for purifying and/or sampling a liquid. |
| NL1039053C2 (en) * | 2011-09-19 | 2013-03-21 | Stichting Wetsus Ct Excellence Sustainable Water Technology | Device and method for a bioreactor, catalysis reactor or crystallizer without internals. |
| US9764304B2 (en) | 2012-05-14 | 2017-09-19 | Empire Technology Development Llc | Acoustically driven nanoparticle concentrator |
| 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 |
| DE102016002600A1 (en) * | 2016-03-06 | 2017-09-07 | WindplusSonne GmbH | Aerosol cleaning and separation for surface coatings and fibers |
| CN105999979B (en) * | 2016-05-31 | 2017-11-24 | 东南大学 | A kind of devices and methods therefor of discrete differential wall manipulation suspended particulate |
| DE102018008259A1 (en) * | 2018-10-18 | 2020-04-23 | Smart Material Printing B.V. | Filter systems for suspended particles with particle sizes from 400 pm to ≤500 μm and their use |
| CN110215787B (en) * | 2019-05-31 | 2024-02-27 | 华电电力科学研究院有限公司 | Acoustic wave reinforced fine particulate matter removing device and removing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2215484A (en) * | 1938-10-10 | 1940-09-24 | Us Government | Sonic flocculator and method of flocculating smoke or the like |
| DE884721C (en) * | 1949-11-29 | 1953-07-30 | Atlas Werke Ag | Method and device for coagulating solid suspended particles in gases by means of sound waves |
| DE947264C (en) * | 1950-02-26 | 1956-08-16 | Fruengel Frank Dr Ing | Device for the ultrasonic treatment of flowing fluids |
| FR1531698A (en) * | 1967-05-26 | 1968-07-05 | Ultrasonic producing device |
-
1990
- 1990-11-27 LU LU87850A patent/LU87850A1/en unknown
-
1991
- 1991-11-01 IE IE383991A patent/IE913839A1/en not_active Application Discontinuation
- 1991-11-25 EP EP19910120036 patent/EP0488097B1/en not_active Expired - Lifetime
- 1991-11-25 WO PCT/EP1991/002214 patent/WO1992009354A1/en active Application Filing
- 1991-11-25 JP JP4500312A patent/JPH06509406A/en active Pending
- 1991-11-25 CA CA 2097070 patent/CA2097070A1/en not_active Abandoned
- 1991-11-25 DE DE59102932T patent/DE59102932D1/en not_active Expired - Fee Related
- 1991-11-26 PT PT9961491A patent/PT99614A/en not_active Application Discontinuation
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11938421B2 (en) | 2016-03-06 | 2024-03-26 | WindplusSonne GmbH | Method and device for separating and/or cleaning aerosols and solid material particles and fibers from gases as well as solid material particles and fibers from liquid materials by acoustophoresis |
| US11291939B1 (en) | 2021-07-13 | 2022-04-05 | Smart Material Printing B.V. | Ultra-fine particle aggregation, neutralization and filtration |
| US11478742B1 (en) | 2021-07-13 | 2022-10-25 | Smart Material Printing B.V. | Ultra-fine particle aggregation, neutralization and filtration |
| CN113982181A (en) * | 2021-10-08 | 2022-01-28 | 江阴市维沃保温材料有限公司 | Double-sided color steel inorganic silicon crystal smoke-preventing and exhaust air pipe plate and processing technology thereof |
| US12005388B2 (en) | 2022-07-26 | 2024-06-11 | Smart Material Printing B.V. | Apparatus and methods for air filtration of HVAC systems |
Also Published As
| Publication number | Publication date |
|---|---|
| PT99614A (en) | 1994-01-31 |
| DE59102932D1 (en) | 1994-10-20 |
| JPH06509406A (en) | 1994-10-20 |
| LU87850A1 (en) | 1992-08-25 |
| WO1992009354A1 (en) | 1992-06-11 |
| EP0488097B1 (en) | 1994-09-14 |
| EP0488097A1 (en) | 1992-06-03 |
| IE913839A1 (en) | 1992-06-03 |
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