CA1065755A - Purifying apparatus - Google Patents
Purifying apparatusInfo
- Publication number
- CA1065755A CA1065755A CA231,538A CA231538A CA1065755A CA 1065755 A CA1065755 A CA 1065755A CA 231538 A CA231538 A CA 231538A CA 1065755 A CA1065755 A CA 1065755A
- Authority
- CA
- Canada
- Prior art keywords
- slot
- impurities
- washing liquid
- duct
- air
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
- B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
- B05B14/46—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
- Separation Of Particles Using Liquids (AREA)
- Gas Separation By Absorption (AREA)
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
Abstract
ABSTRACT Apparatus for purifying the air laden with print particles for use in a paint spray booth, comprises a vertical duct having a mixing chamber at one end. The chamber has a horizontal wall formed with one or more curved slots at which a spray or washing liquid and the air stream are directed to atomize the washing liquid. An upright guide structure in the mixing chamber defines a narrow passage or passages in which the impurities are removed from the air stream by the atomized liquid.
Description
10~i57~5 The invention relates to apparatus for purifying an air stream laden with impurities, and concerns apparatus for purifying, washing, scrubbing or otherwise cleaning gases, for example venti- -lating air in paint spray booths which are used for the continuous or intermittent painting of articles conveyed through the booth.
The articles may be car bodies. Alternatively, the air purifying apparatus may be a paint spray chamber for painting objects which may be supported by a stand during painting.
In proposed apparatus for collecting contaminates or im-purities from gases such as air, it has been known to employ streams of water directed at passages through which the contaminated air flows. Such prior apparatus depended on creating turbulence in the mixture of air and water for entraining particles entrained in the air stream. Typical apparatus of this prior art type is described in such U.S. Patents as Patent 3,119,675, issued to E.F. Gallagher on January 28, 1964; Patent 3,255,522, issued to B.Black on December 28, 1968; and Patent 3,233,881 issued to F.S. Smith on February 8, 1966~ These prior apparatus have not proven wholly satisfactory because the stream of water projected into the air streams was not sufficiently atomized by the nozzles used to pro-ject the washwater and insufficient impurities were entrained therein.
According to one aspect of the invention there is provided apparatus for washing gases, comprising means for supplying washing liquid and adapted to supply washing liquid co-current with the flow of gas, and a mixing chamber for mixing the washing liquid and gas to be washed, the mixing chamber having a curved inlet arrang-ed to atomise the washing liquid prior to its passage to the mixing chamber.
Preferably, the inlet may comprise an annular slot. The slot may be formed by a plate or plates defining an upstream end of the mixing chamber. The mixing chamber may be annular. The inlet may comprise a plurality of concentric slots. Preferably, .
-' - -, ' ,:
.
the cross-sectional area of the mixing chamber may be substantially greater than that of the slot or slots.
The supply means for the washing liquid may comprise a nozzle. The nozzle may be spaced from the inlet. The nozzle may be positioned on a line passing through the axis of rotation of the curve defining the slot. Moreover, the position of the nozzle may be such that a jet of washing liquid may emerge as a cone, the greatest diameter of which may impinge on and just exceeds the greatest diameter of the curved inlet.
The jet may coincide exactly with the slot.
The nozzle may be a centrifugal kind of nozzle, such as a nozzle providing a hollow cone of washing liquid. Or the nozzle may be a full cone nozzle, that is one which can provide a sub-stantially homogeneous solid jet of washing liquid in the form of a cone.
According to a second aspect of the invention, there is provided apparatus for purifying an air stream laden with impuri-ties, comprising a vertical duct having opposed spaced walls, -baffles extending alternately from opposite ones of the walls to define a tortuous path for an air stream free of impurities passing through the duct, suction means communicating with one end i~ of the duct for drawing the air stream through the duct, a source of washing liquid, mixing chamber at the other end of the duct, the chamber comprising, spaced vertical plates supported in the duct a horizontal bottom wall joined in part to the vertical plates and having at least one curved slot therein with closely spaced edges for atomizing the washing liquid impinging on the bottom wall and for mixing the atomized washing liquid with a stream of air laden with impurities, an upright guide structure on the bottom wall, spaced between the plates adjacent the slot to , define a narrow passage leading to the tortuous path in which the atomized liquid removes the impurities from the air stream and spray means below the bottom wall for directing a spray of said
The articles may be car bodies. Alternatively, the air purifying apparatus may be a paint spray chamber for painting objects which may be supported by a stand during painting.
In proposed apparatus for collecting contaminates or im-purities from gases such as air, it has been known to employ streams of water directed at passages through which the contaminated air flows. Such prior apparatus depended on creating turbulence in the mixture of air and water for entraining particles entrained in the air stream. Typical apparatus of this prior art type is described in such U.S. Patents as Patent 3,119,675, issued to E.F. Gallagher on January 28, 1964; Patent 3,255,522, issued to B.Black on December 28, 1968; and Patent 3,233,881 issued to F.S. Smith on February 8, 1966~ These prior apparatus have not proven wholly satisfactory because the stream of water projected into the air streams was not sufficiently atomized by the nozzles used to pro-ject the washwater and insufficient impurities were entrained therein.
According to one aspect of the invention there is provided apparatus for washing gases, comprising means for supplying washing liquid and adapted to supply washing liquid co-current with the flow of gas, and a mixing chamber for mixing the washing liquid and gas to be washed, the mixing chamber having a curved inlet arrang-ed to atomise the washing liquid prior to its passage to the mixing chamber.
Preferably, the inlet may comprise an annular slot. The slot may be formed by a plate or plates defining an upstream end of the mixing chamber. The mixing chamber may be annular. The inlet may comprise a plurality of concentric slots. Preferably, .
-' - -, ' ,:
.
the cross-sectional area of the mixing chamber may be substantially greater than that of the slot or slots.
The supply means for the washing liquid may comprise a nozzle. The nozzle may be spaced from the inlet. The nozzle may be positioned on a line passing through the axis of rotation of the curve defining the slot. Moreover, the position of the nozzle may be such that a jet of washing liquid may emerge as a cone, the greatest diameter of which may impinge on and just exceeds the greatest diameter of the curved inlet.
The jet may coincide exactly with the slot.
The nozzle may be a centrifugal kind of nozzle, such as a nozzle providing a hollow cone of washing liquid. Or the nozzle may be a full cone nozzle, that is one which can provide a sub-stantially homogeneous solid jet of washing liquid in the form of a cone.
According to a second aspect of the invention, there is provided apparatus for purifying an air stream laden with impuri-ties, comprising a vertical duct having opposed spaced walls, -baffles extending alternately from opposite ones of the walls to define a tortuous path for an air stream free of impurities passing through the duct, suction means communicating with one end i~ of the duct for drawing the air stream through the duct, a source of washing liquid, mixing chamber at the other end of the duct, the chamber comprising, spaced vertical plates supported in the duct a horizontal bottom wall joined in part to the vertical plates and having at least one curved slot therein with closely spaced edges for atomizing the washing liquid impinging on the bottom wall and for mixing the atomized washing liquid with a stream of air laden with impurities, an upright guide structure on the bottom wall, spaced between the plates adjacent the slot to , define a narrow passage leading to the tortuous path in which the atomized liquid removes the impurities from the air stream and spray means below the bottom wall for directing a spray of said
- 2 -,,.. . ~ . . .
.. . - .~ ~ . .
'': ' '.' ' ' ' - ~ ' - - ~ ' 1(~6S7S5 washing liquid against the underside of the bottom wall to mix with the stream of air laden with impurities.
According to a third aspect of the invention, there is provided a paint spray chamber for the painting of articles there-in, including means to deliver ventilating air to the chamber, and apparatus for washing the ventilating air which exits from the chamber laden with particles, the apparatus including supply means for washing liquid adapted to supply the washing liquid co-current with the air, and a mixing chamber for mixing the washing liquid and gas to be washed, the mixing chamber having a curved inlet arranged to atomise the washing liquid prior to its passage to the mixing chamber.
The paint spray chamber may include a stand for support-ing objects during painting. One side of the chamber may be open and the washing apparatus may be positioned at or adjacent a side opposite the open side.
; The supply means for liquid may comprise a reservoir below the chamber for wash liquid, which liquid has been used to flood side and/or bottom walls of a channel of the chamber through which the articles are conveyed. Or, the supply means may comprise a nozzle or nozzles which can emit a jet of wash liquid and said nozzle may be supplied with wash liquid by one or more pumps.
There may be an upwardly convergent boundary wall which narrows towards the curved inlet. The boundary wall may be conical.
Apparatus embodying the invention is diagrammatically illustrated by way of example, in the accompanying drawings, ; in which:
Figure 1 shows a vertical sectional view through the apparatus used in a paint spray booth;
Figure 2 shows a view of the inside of a paint spray booth;
Figure 3 shows a side view of the booth, and Figure 4 - . .:
shows a modified form of the apparatus plan view.
Referring to the drawings, the apparatus 1 i8 situated to one side of channel 2 of the booth 2a. Ventilating air passes through the booth in the direction of the arrow "X", and washing water floods the side and/or bottom walls of the channel before passing through a V-shaped bottom outlet (not shown) with the air, now laden with paint particl~s,to a reservoir, also not shown.
An article 14 to be painted is suspended from an overhead bay 15 in which a suspension device and a conveyor therefor is mounted.
The paint laden ventilating air passes to a discharge duct
.. . - .~ ~ . .
'': ' '.' ' ' ' - ~ ' - - ~ ' 1(~6S7S5 washing liquid against the underside of the bottom wall to mix with the stream of air laden with impurities.
According to a third aspect of the invention, there is provided a paint spray chamber for the painting of articles there-in, including means to deliver ventilating air to the chamber, and apparatus for washing the ventilating air which exits from the chamber laden with particles, the apparatus including supply means for washing liquid adapted to supply the washing liquid co-current with the air, and a mixing chamber for mixing the washing liquid and gas to be washed, the mixing chamber having a curved inlet arranged to atomise the washing liquid prior to its passage to the mixing chamber.
The paint spray chamber may include a stand for support-ing objects during painting. One side of the chamber may be open and the washing apparatus may be positioned at or adjacent a side opposite the open side.
; The supply means for liquid may comprise a reservoir below the chamber for wash liquid, which liquid has been used to flood side and/or bottom walls of a channel of the chamber through which the articles are conveyed. Or, the supply means may comprise a nozzle or nozzles which can emit a jet of wash liquid and said nozzle may be supplied with wash liquid by one or more pumps.
There may be an upwardly convergent boundary wall which narrows towards the curved inlet. The boundary wall may be conical.
Apparatus embodying the invention is diagrammatically illustrated by way of example, in the accompanying drawings, ; in which:
Figure 1 shows a vertical sectional view through the apparatus used in a paint spray booth;
Figure 2 shows a view of the inside of a paint spray booth;
Figure 3 shows a side view of the booth, and Figure 4 - . .:
shows a modified form of the apparatus plan view.
Referring to the drawings, the apparatus 1 i8 situated to one side of channel 2 of the booth 2a. Ventilating air passes through the booth in the direction of the arrow "X", and washing water floods the side and/or bottom walls of the channel before passing through a V-shaped bottom outlet (not shown) with the air, now laden with paint particl~s,to a reservoir, also not shown.
An article 14 to be painted is suspended from an overhead bay 15 in which a suspension device and a conveyor therefor is mounted.
The paint laden ventilating air passes to a discharge duct
3, which is at a side of the booth remote from an opening 16 which connects to a suction fan 17 for expelling the ventilating air and driven by for example a belt drive 18 and driving motor 19, and mounted on a stand l9a. Between the discharge duct 3 and the channel 2 of the booth is the washing apparatus 1, comprising side ;
walls 4 and 5 and a central cylindrical boss 6 spaced from the side walls 4 and 5 by spacers 6a symmetrically disposed at 120 to define a chamber 7 of annular configuration in horizontal plan view.
An inlet 8 to the chamber comprises a curved inlet in the form of an annular (as considered in plan) slot 10 defined in a plate 9.
Edges of the slot 10 in the plate 9 together with the air passing - -through the slot atomise wash liquid, usually water, from a nozzle 11. The nozzle 11 is connected with the reservoir or basin 20 by pipe 21 and pump 22 driven by a driving motor 23. The reservoir or basin is connected to the pump by a pipe 24. It will be under-stood that the slot 10 is shown in Figure 1 in vertical cross-section.
A iet of water from the nozzle 11 emerges as a cone and just exceeds at the greatest diameter where it impinges on the plate, the greatest diameter of the slot 10. The paint laden air and the wash water pass in co-current fashion through the slot 10.
The edges of the slot 10 atomise the water, and a thorough mixing of the atomised water and of the paint laden air takes place in the chamber 7 owing to a venturi like effect as the chamber 7 has a . : : . .
: - '. ' :
- ;,, , ' ' .::.
10~5~7S~
great pleasure drop at the slot.
The slot 10 is so narrow that no llquid can pass there-through in counter-current flow to that of the air current.
The paint is removed from the air and passes to the water particles, which fall into a trough or collector reservoir having a bottom plate 12. The cleaned air passes up the discharge duct 3, which may have alternate inclined baffle plates 3a flooded with water from a supply pipe 3_ connected with the pump 22.
There is a conical outwardly inclined wall 13 leading to the inlet to enhance the feeding and cleaning effect. The force of the air stream and the effect of the wall 13 carry and guide the water to the annular slot. Moreover it will be seen that the annular slot lO is positioned spaced inwardly of the wall 13 in the plate 9, its position serving to fortify the atomization and hence the washing efficiency.
From an inspection of the drawing it will be apparent that air is drawn by the suction fan 17, from the inside of the booth in the direction of arrow 'X' and via the conical guide wall 13 through the slot 10 upwardly around the cylindrical member 6 and through the duct.
Water from the trough or collector reservoir 12 may fall in a cascade to the main reservoir 20 of the booth providing a curtain or curtains of water through which the paint laden air passes before reaching the cleaning apparatus. There may be a series of inclined pans at successively lower levels in a vertical-, ly stepped array below the reservoir 12 to which pans the water passes in succession to provide the curtains of water as a plurality of cascades between the reservoir and the basin.
It will be understood that Figure 3 shows a booth in which four cleaning apparatuses are situated side by side along one sideof the booth. More or fewer apparatuses may be utilised as desired.
The or each apparatus can be inspected and cleaned through in-spection covers 25. Moreover, though not illustrated, there may .: .. . : . . , , - ~
. - .. ~
be one or more cleaning apparatuses situated at the side of the booth with the opening 16, instead of or in addition to those shown.
Referring now to Figure 4 this illustrates an alternate structure for the bottom wall 9, of the mixing chamber 7. Here there are a plurality of annular or arcuate slots 61 and 61' in the wall 9 concentric with each other and with the central cylindrical boss 6. This construction may be used to facilitate cleaning larger quantities of paint laden air and to provide more plate edges 58" at the respective slots 61' for atomizing more washing liquid.
In every embodiment, the nozzle or nozzles 11 is or are -preferably of the centrifugal kind. This kind of nozzle provides a jet of washing liquid in the form of a hollow cone, that is an - annular (as viewed in plan) or conical sheet or spray of liquid.
As an alternative to the centrifugal kind of nozzle, a full-cone nozzle could be used, that is a nozzle from which a substantially so?id, homogeneous conical jet of washing liquid lS
emitted.
Using either kind of nozzle, a complete wetting of the in-let 3 is achieved, so that washing efficiency is enhanced.
: .
walls 4 and 5 and a central cylindrical boss 6 spaced from the side walls 4 and 5 by spacers 6a symmetrically disposed at 120 to define a chamber 7 of annular configuration in horizontal plan view.
An inlet 8 to the chamber comprises a curved inlet in the form of an annular (as considered in plan) slot 10 defined in a plate 9.
Edges of the slot 10 in the plate 9 together with the air passing - -through the slot atomise wash liquid, usually water, from a nozzle 11. The nozzle 11 is connected with the reservoir or basin 20 by pipe 21 and pump 22 driven by a driving motor 23. The reservoir or basin is connected to the pump by a pipe 24. It will be under-stood that the slot 10 is shown in Figure 1 in vertical cross-section.
A iet of water from the nozzle 11 emerges as a cone and just exceeds at the greatest diameter where it impinges on the plate, the greatest diameter of the slot 10. The paint laden air and the wash water pass in co-current fashion through the slot 10.
The edges of the slot 10 atomise the water, and a thorough mixing of the atomised water and of the paint laden air takes place in the chamber 7 owing to a venturi like effect as the chamber 7 has a . : : . .
: - '. ' :
- ;,, , ' ' .::.
10~5~7S~
great pleasure drop at the slot.
The slot 10 is so narrow that no llquid can pass there-through in counter-current flow to that of the air current.
The paint is removed from the air and passes to the water particles, which fall into a trough or collector reservoir having a bottom plate 12. The cleaned air passes up the discharge duct 3, which may have alternate inclined baffle plates 3a flooded with water from a supply pipe 3_ connected with the pump 22.
There is a conical outwardly inclined wall 13 leading to the inlet to enhance the feeding and cleaning effect. The force of the air stream and the effect of the wall 13 carry and guide the water to the annular slot. Moreover it will be seen that the annular slot lO is positioned spaced inwardly of the wall 13 in the plate 9, its position serving to fortify the atomization and hence the washing efficiency.
From an inspection of the drawing it will be apparent that air is drawn by the suction fan 17, from the inside of the booth in the direction of arrow 'X' and via the conical guide wall 13 through the slot 10 upwardly around the cylindrical member 6 and through the duct.
Water from the trough or collector reservoir 12 may fall in a cascade to the main reservoir 20 of the booth providing a curtain or curtains of water through which the paint laden air passes before reaching the cleaning apparatus. There may be a series of inclined pans at successively lower levels in a vertical-, ly stepped array below the reservoir 12 to which pans the water passes in succession to provide the curtains of water as a plurality of cascades between the reservoir and the basin.
It will be understood that Figure 3 shows a booth in which four cleaning apparatuses are situated side by side along one sideof the booth. More or fewer apparatuses may be utilised as desired.
The or each apparatus can be inspected and cleaned through in-spection covers 25. Moreover, though not illustrated, there may .: .. . : . . , , - ~
. - .. ~
be one or more cleaning apparatuses situated at the side of the booth with the opening 16, instead of or in addition to those shown.
Referring now to Figure 4 this illustrates an alternate structure for the bottom wall 9, of the mixing chamber 7. Here there are a plurality of annular or arcuate slots 61 and 61' in the wall 9 concentric with each other and with the central cylindrical boss 6. This construction may be used to facilitate cleaning larger quantities of paint laden air and to provide more plate edges 58" at the respective slots 61' for atomizing more washing liquid.
In every embodiment, the nozzle or nozzles 11 is or are -preferably of the centrifugal kind. This kind of nozzle provides a jet of washing liquid in the form of a hollow cone, that is an - annular (as viewed in plan) or conical sheet or spray of liquid.
As an alternative to the centrifugal kind of nozzle, a full-cone nozzle could be used, that is a nozzle from which a substantially so?id, homogeneous conical jet of washing liquid lS
emitted.
Using either kind of nozzle, a complete wetting of the in-let 3 is achieved, so that washing efficiency is enhanced.
: .
Claims (9)
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. Apparatus for purifying an air stream laden with impurities, comprising:
a vertical duct having opposed spaced walls;
baffles extending alternately from opposite ones of said walls to define a tortuous path for an air stream free of said impurities passing through said duct;
means communicating with one end of said duct for drawing said air stream through said duct;
a source of washing liquid, a mixing chamber at the other end of said duct, said chamber comprising:
spaced vertical plates supported in said duct;
a horizontal bottom wall joined in part to said vertical plates and having at least one slot therein with closely spaced edges for atomizing said washing liquid impinging on said bottom wall and for mixing said atomized washing liquid with a stream of air laden with impurities;
an upright guide structure on said bottom wall, spaced between said plates adjacent said slot, to define a narrow passage leading to said tortuous path wherein said atomized liquid removes said impurities from the air stream; and spray means for directing a spray of said washing liquid against the underside of said bottom wall to mix with said stream of air laden with impurities.
a vertical duct having opposed spaced walls;
baffles extending alternately from opposite ones of said walls to define a tortuous path for an air stream free of said impurities passing through said duct;
means communicating with one end of said duct for drawing said air stream through said duct;
a source of washing liquid, a mixing chamber at the other end of said duct, said chamber comprising:
spaced vertical plates supported in said duct;
a horizontal bottom wall joined in part to said vertical plates and having at least one slot therein with closely spaced edges for atomizing said washing liquid impinging on said bottom wall and for mixing said atomized washing liquid with a stream of air laden with impurities;
an upright guide structure on said bottom wall, spaced between said plates adjacent said slot, to define a narrow passage leading to said tortuous path wherein said atomized liquid removes said impurities from the air stream; and spray means for directing a spray of said washing liquid against the underside of said bottom wall to mix with said stream of air laden with impurities.
2. Apparatus as defined in Claim 1, wherein said slot in said bottom wall of said mixing chamber is annular in form, and wherein said upright structure is cylindrical in shape, concentric with said slot and slightly smaller in diameter than said slot, so that the mixture of atomized liquid and air laden with impurities forms a narrow cylindrically shaped stream in passing through said passage.
3. Apparatus, as defined in Claim 2, wherein said spray means comprises a nozzle shaped to form a conical spray impinging against edges of said slot.
4. Apparatus as defined in Claim 2, wherein said bottom wall is formed with another annular slot concentric with said first named slot so that the mixture of atomized liquid and air laden with impurities forms a plurality of concentric cylindrically shaped streams in passing through said passage.
5. Apparatus as defined in Claim 3, further including guide means downstream of said slot for guiding said spray of washing liquid towards said slot.
6. Apparatus as defined in Claim 1 further including col-lection means below said duct for collecting washing liquid con-taining the impurities removed from said stream of air laden with impurities.
7. Apparatus as defined in Claim 6 wherein said collection means comprises a trough adjacent said mixing chamber, and a basin below said trough disposed so that the washing liquid over-flowing said trough falls as a cascade into said basin, whereby said air stream laden with impurities passing to said mixing chamber first passes through said cascade and is initially filtered by said cascade.
8. Apparatus as defined in Claim 6, wherein said collection means comprises:
a trough adjacent said mixing chamber;
a plurality of pans disposed in a vertically spaced stepped array with respect to said trough; and a basin below said pans, so disposed that washing liquid overflowing said trough passes in succession to said pans and said basin and forms a plurality of liquid cascades between said pans and said basin, whereby said air stream laden with impurities passing into said mixing chamber first passes through said liquid cascades and is initially filtered thereby.
a trough adjacent said mixing chamber;
a plurality of pans disposed in a vertically spaced stepped array with respect to said trough; and a basin below said pans, so disposed that washing liquid overflowing said trough passes in succession to said pans and said basin and forms a plurality of liquid cascades between said pans and said basin, whereby said air stream laden with impurities passing into said mixing chamber first passes through said liquid cascades and is initially filtered thereby.
9. Apparatus as defined in Claim 1, further comprising pipe means arranged to distribute said washing liquid on inner sides of said walls of said duct and on said baffles for washing the same.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB31983/74A GB1513716A (en) | 1974-07-18 | 1974-07-18 | Gas purifying apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1065755A true CA1065755A (en) | 1979-11-06 |
Family
ID=10331295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA231,538A Expired CA1065755A (en) | 1974-07-18 | 1975-07-15 | Purifying apparatus |
Country Status (11)
| Country | Link |
|---|---|
| JP (3) | JPS5135670A (en) |
| BE (1) | BE831531R (en) |
| BR (1) | BR7504557A (en) |
| CA (1) | CA1065755A (en) |
| CS (1) | CS181298B2 (en) |
| DE (1) | DE2532011C2 (en) |
| ES (1) | ES439570A2 (en) |
| FR (1) | FR2278380A2 (en) |
| GB (1) | GB1513716A (en) |
| IT (1) | IT1050696B (en) |
| NL (1) | NL7508474A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2741061B1 (en) * | 1995-11-13 | 1998-03-20 | Alcatel Fibres Optiques | METHOD FOR MANUFACTURING SINGLE-MODE OPTICAL FIBER AND OPTICAL AMPLIFIER USING SUCH FIBER |
| CN105381685A (en) * | 2014-09-03 | 2016-03-09 | 长沙四季春环保有限公司 | Air purification method and air purification apparatus of circulation gas-liquid mist stirring fusion separation |
| CN108554070A (en) * | 2018-06-29 | 2018-09-21 | 上官可可 | A kind of haze for handling kiln tail gas washes purifier |
| CN115184552B (en) * | 2022-07-11 | 2023-07-28 | 中国能源建设集团广东省电力设计研究院有限公司 | Carbon emission on-line monitoring system with edge information fusion |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB643504A (en) * | 1940-05-23 | 1950-09-20 | Peters Dalton Inc | Improvements in or relating to apparatus for washing suspended matter from air |
| US2459635A (en) * | 1945-08-30 | 1949-01-18 | Peters Dalton Inc | Gas washer |
| DE1118659B (en) * | 1954-07-05 | 1961-11-30 | Schilde Maschb Ag | Paint particle separator for spray booths |
| DE1214370C2 (en) * | 1963-04-02 | 1973-01-11 | Tunzini Sa | Dust removal device, especially for paint booths |
| FR94772E (en) * | 1963-04-02 | 1969-11-21 | Tunzini | Dust removal installation, in particular for painting booths. |
| JPS428073Y1 (en) * | 1966-09-05 | 1967-04-24 | ||
| JPS4924615U (en) * | 1972-06-06 | 1974-03-02 |
-
1974
- 1974-07-18 GB GB31983/74A patent/GB1513716A/en not_active Expired
-
1975
- 1975-07-15 IT IT50536/75A patent/IT1050696B/en active
- 1975-07-15 CA CA231,538A patent/CA1065755A/en not_active Expired
- 1975-07-16 NL NL7508474A patent/NL7508474A/en active Search and Examination
- 1975-07-16 FR FR7522233A patent/FR2278380A2/en active Granted
- 1975-07-17 BR BR7504557*A patent/BR7504557A/en unknown
- 1975-07-17 JP JP50088196A patent/JPS5135670A/ja active Pending
- 1975-07-17 CS CS7500005067A patent/CS181298B2/en unknown
- 1975-07-17 DE DE2532011A patent/DE2532011C2/en not_active Expired
- 1975-07-17 ES ES439570A patent/ES439570A2/en not_active Expired
- 1975-07-18 BE BE158438A patent/BE831531R/en active
-
1980
- 1980-08-20 JP JP11533480A patent/JPS5644024A/en active Pending
-
1982
- 1982-04-24 JP JP1982060418U patent/JPS5853221U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5644024A (en) | 1981-04-23 |
| JPS5135670A (en) | 1976-03-26 |
| FR2278380A2 (en) | 1976-02-13 |
| DE2532011C2 (en) | 1982-06-24 |
| JPS6119778Y2 (en) | 1986-06-14 |
| CS181298B2 (en) | 1978-03-31 |
| BE831531R (en) | 1976-01-19 |
| IT1050696B (en) | 1981-03-20 |
| ES439570A2 (en) | 1977-03-16 |
| GB1513716A (en) | 1978-06-07 |
| NL7508474A (en) | 1976-01-20 |
| DE2532011A1 (en) | 1976-02-05 |
| BR7504557A (en) | 1976-07-06 |
| FR2278380B2 (en) | 1981-12-24 |
| JPS5853221U (en) | 1983-04-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |
Effective date: 19961106 |