CA1047946A - Air scrubbing device - Google Patents
Air scrubbing deviceInfo
- Publication number
- CA1047946A CA1047946A CA246,788A CA246788A CA1047946A CA 1047946 A CA1047946 A CA 1047946A CA 246788 A CA246788 A CA 246788A CA 1047946 A CA1047946 A CA 1047946A
- Authority
- CA
- Canada
- Prior art keywords
- air
- scrubbing
- chamber
- spherical
- elements
- 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
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
An air scrubbing device comprising a hollow closed housing having an inlet port and an outlet port to permit the passage of compressed air therethrough. An air scrubbing cham-ber is provided within the housing and contains a plurality of spherical glass elements for obstruction with the normal pas-sage of the compressed air through the housing. The spherical glass elements cause turbulence of the compressed air whereby a substantial portion of undesirable particles contained in the air will be ejected from the air and deposited on the surface of the spherical elements. A valve is provided to cause a "blow off", in the reverse direction to the normal passage of air, of the deposits of undesirable particles from the spherical elements and the chamber and to evacuate it from the housing.
An air scrubbing device comprising a hollow closed housing having an inlet port and an outlet port to permit the passage of compressed air therethrough. An air scrubbing cham-ber is provided within the housing and contains a plurality of spherical glass elements for obstruction with the normal pas-sage of the compressed air through the housing. The spherical glass elements cause turbulence of the compressed air whereby a substantial portion of undesirable particles contained in the air will be ejected from the air and deposited on the surface of the spherical elements. A valve is provided to cause a "blow off", in the reverse direction to the normal passage of air, of the deposits of undesirable particles from the spherical elements and the chamber and to evacuate it from the housing.
Description
~47946 : -~ , The present invention relates to an irnproved device for drying and cleaning air in a compressed air system and more particularly to a scru~bing device for removing undesirable solid and fluid particles from compressed air~
Air dryers or cleaners heretofore known utilize com~
binations of filtering cartridges and filtered diaphragms in ordar to remove moisture, oil emulsion and solid particles from compressed air. Such a device is disclosed in my co-pending ~; -application Ser. ~o. 166 9 343 filed on March 15, 1973 and en-titled "Air Drying and Cleaning Device". With the prior art ~ -devices it is necessary to periodically change the cartridges and filters as these have absorbed and retained undesirable particles of the type mentioned above. Therefore, the system ;-must be shut down or made inoperative for a certain period of time to permit the servicing of the device. Further, the cost for these replacement parts will add to the total cost of the ;
system. `
It is a feature of the present invention to provide an ;~
air scrubbing device which substantially overcomes all of the above-mentioned disadvantages.
It is a further feature of the present invention to ~;;
provide an air scrubbing device which requires very little ;~
maintenance and which is self-cleaning.
It is a still further feature of the present invention to provide an air scrubbing device which is substantially econo-mical to construct and service and w~ich removes a substantial portion of undesirable particles contained in compressed air.
From a broad aspect, the present invention provides an air scrubbing~device comprising a hollow closed housing having an inlet port and an outlet port to permit the passage of com- -pressed air therethrough. An air scrubbing chamber is provided within the housing and contains a plurality of spherical glass 1C~479~6 elements ~or obstruction with the passaye of the compressed air through the housing. The spherical glass elements cause turbu-lence of the compressed air whereby a substantial portion o~
undesirable particles contained in the air will be ejected from the air and deposited on the surface of the spherical elements.
Means is further provided to evacuate the deposits of undesir-able particles from the spherical elements and the chamber.
A preferred embodiment of the present invention will now be described with reference to the accompanying drawing which is a fragmented perspective view of an air scrubbing device con-structed according to the present invention.
Referring now to the drawing, there is shown generally at 10, the air scrubbing device of the present inven~ion. The device comprises a hollow closed housing defined by an elongated tubular body 11 closed at both the lower end 12 and the upper end 13.
An inlet port 14 is provlded adjacent the lower end 12 and leads to an expansion chamber 24 in the lower end of the body.
The chamber 24 causes expansion of the air, which results in a temperature drop and minor condensation. An outlet port 15 is provided adjacent the upper end 13 of the body. Compressed air -will flow through the hollow tubular body 11 from the inlet port 14 to the outlet port 15, as indicated by directional arrows 16.
An air scrubbing chamber 17 is defined within the tubular body 11 and contains a plurality of spherical glass ~`-elements or balls 18 for obstruction with the passage of com-pressed air through the body ll whereby to cause turbulence of air between the glass elements. This turbulence has a tendency to throw tangentially all parts, which are heavier than air.
This turbulence, in fact, gets rid of the undesirable particles in the air. As a result of the air being forced to go around the glass elements the surface contact with air is artifically increased and causes the air to accelerate around them and while _ 2 --. -, :.: , . . . " . .
1~7g~
doing so their centriEugal force will throw undesirable particles contained in the air out of the air and they will deposit on the spherical surface of the particles forming a film deposit there-on. This film contains particles of water, oil emulsion and other solid particles that may be contained in the compressed air. In the embodiment hereinshown, the scrubbing chamber 17 is of a predetermined height to hold approximately one thousand spherical elements, there being at least one hundred spherical elements in height whereby the compressed air will contact ap-proximatelyone hundred hard spherical surfaces on its travel - ~
through the scrubbing chamber. ~ ;;
As shown in the drawing, the scrubbing chamber 17 is located above the expansion chamber 24 to a distance spaced from the end 13 thus forming an empty chamber adjacent the outlet port 15. The chamber 17 is defined between a support screen 19 ;
retained transversely in the tubular body 11 with the spherical elemen-ts 18 being supported thereon. A surface screen 20 is ~;
retained on top of the spherical elements 18 by a cage 21 whereby the spherical elements are prevented from displacement by the compressed air. A removable cover 22 is secured to the top end of the body 11 by a wrap-around collar 23. The cover 22 permits access to the interior of the tubular body whereby to install the screens and spherical elements therein. Also, this permits the removal o~ these parts if cleaning of the spherical elements becomes necessary. It can be seen that to clean the device all that is required is to wash the spherical elements and the screens. It is not necessary to provide new replacement parts.
During operation of the davice it is necessary to ;
clean the spherical elements 18 and the expansion chamber 24 of their deposits. This is made possible by the provision of a valve 30 secured in the lower end 12 of the body 11, downstream of the scrubbing chamber 17. The valve 30 hereinshown is a valve 7~6 which opens automatically at predetermined time intervals. Whenthe valve opens, the pressure inside the housing 11 will drop causing the flow of air to reverse blowiny back dry air from the outlet port 15 down through the scrubbing chamber 17 and expansion charnber to purge them of their deposits. This purging -is done at a much lower velocity and very little turbulence is created in the reverse direction. As shown, the valve is also provided with a manually operable release member 31 to cause evacuation or cleaning of the chamber 17 manually in the event of power failure or for other needs. Thus, it is seen that it is turbulence, plus centrifugal forces, plus surface impingement -~
and wetting of an artificially increased surface without absorp-tion, as the glass elements naturally are inert and non-absorp- ;
tive, that both scrubbing and polishing of the air is achieved.
In order to monitor the condition of the spherical `
elements in the scrubbing chamber 17 there is provided a pres- ;~ -sure gauge 32 adjacent the inlet port 14 and a further pressure gauge 33 adjacent the outlet port 15. Thus, by monitoring the `
air pressure below and above the scrubbing chamber gives an indication of the cleanliness of the spherical elements. The tubular body 11 is secured substantially vertically by the brackets 34 with the inlet ports 14 being positioned at the `
; :i .
lower end of the body 11.
Briefly, in operation a compressed air flow is passed through a plurality of spherical glass particles to induce tur-bulence in the compressed air and create impingement of compressed ~ ;~
air upon the surface of the spherical elements and centrifuge -~
which results in a film deposit of undesirable particles on the surface of these elements. Periodically7 the valve 30 is opened -whereby to purge the film deposits from the elements and the expansion chamber out of the housing 11. The "purging`' of the deposits from the spherical elements 18 is provided by the -.. ,.. , .-;- , , .,. - ~...... , .- , ,. , ~ .. ~ :
794~
dry air, upstream of the scrubbing chamber 17, which is caused to be sucked back through the chamber 17 and out through the valve 30. Thus, this device provides an air scrubbing appara-tus which is self-cleaning and which requires practically no maintenance.
'' ~ ' - 5 - .
Air dryers or cleaners heretofore known utilize com~
binations of filtering cartridges and filtered diaphragms in ordar to remove moisture, oil emulsion and solid particles from compressed air. Such a device is disclosed in my co-pending ~; -application Ser. ~o. 166 9 343 filed on March 15, 1973 and en-titled "Air Drying and Cleaning Device". With the prior art ~ -devices it is necessary to periodically change the cartridges and filters as these have absorbed and retained undesirable particles of the type mentioned above. Therefore, the system ;-must be shut down or made inoperative for a certain period of time to permit the servicing of the device. Further, the cost for these replacement parts will add to the total cost of the ;
system. `
It is a feature of the present invention to provide an ;~
air scrubbing device which substantially overcomes all of the above-mentioned disadvantages.
It is a further feature of the present invention to ~;;
provide an air scrubbing device which requires very little ;~
maintenance and which is self-cleaning.
It is a still further feature of the present invention to provide an air scrubbing device which is substantially econo-mical to construct and service and w~ich removes a substantial portion of undesirable particles contained in compressed air.
From a broad aspect, the present invention provides an air scrubbing~device comprising a hollow closed housing having an inlet port and an outlet port to permit the passage of com- -pressed air therethrough. An air scrubbing chamber is provided within the housing and contains a plurality of spherical glass 1C~479~6 elements ~or obstruction with the passaye of the compressed air through the housing. The spherical glass elements cause turbu-lence of the compressed air whereby a substantial portion o~
undesirable particles contained in the air will be ejected from the air and deposited on the surface of the spherical elements.
Means is further provided to evacuate the deposits of undesir-able particles from the spherical elements and the chamber.
A preferred embodiment of the present invention will now be described with reference to the accompanying drawing which is a fragmented perspective view of an air scrubbing device con-structed according to the present invention.
Referring now to the drawing, there is shown generally at 10, the air scrubbing device of the present inven~ion. The device comprises a hollow closed housing defined by an elongated tubular body 11 closed at both the lower end 12 and the upper end 13.
An inlet port 14 is provlded adjacent the lower end 12 and leads to an expansion chamber 24 in the lower end of the body.
The chamber 24 causes expansion of the air, which results in a temperature drop and minor condensation. An outlet port 15 is provided adjacent the upper end 13 of the body. Compressed air -will flow through the hollow tubular body 11 from the inlet port 14 to the outlet port 15, as indicated by directional arrows 16.
An air scrubbing chamber 17 is defined within the tubular body 11 and contains a plurality of spherical glass ~`-elements or balls 18 for obstruction with the passage of com-pressed air through the body ll whereby to cause turbulence of air between the glass elements. This turbulence has a tendency to throw tangentially all parts, which are heavier than air.
This turbulence, in fact, gets rid of the undesirable particles in the air. As a result of the air being forced to go around the glass elements the surface contact with air is artifically increased and causes the air to accelerate around them and while _ 2 --. -, :.: , . . . " . .
1~7g~
doing so their centriEugal force will throw undesirable particles contained in the air out of the air and they will deposit on the spherical surface of the particles forming a film deposit there-on. This film contains particles of water, oil emulsion and other solid particles that may be contained in the compressed air. In the embodiment hereinshown, the scrubbing chamber 17 is of a predetermined height to hold approximately one thousand spherical elements, there being at least one hundred spherical elements in height whereby the compressed air will contact ap-proximatelyone hundred hard spherical surfaces on its travel - ~
through the scrubbing chamber. ~ ;;
As shown in the drawing, the scrubbing chamber 17 is located above the expansion chamber 24 to a distance spaced from the end 13 thus forming an empty chamber adjacent the outlet port 15. The chamber 17 is defined between a support screen 19 ;
retained transversely in the tubular body 11 with the spherical elemen-ts 18 being supported thereon. A surface screen 20 is ~;
retained on top of the spherical elements 18 by a cage 21 whereby the spherical elements are prevented from displacement by the compressed air. A removable cover 22 is secured to the top end of the body 11 by a wrap-around collar 23. The cover 22 permits access to the interior of the tubular body whereby to install the screens and spherical elements therein. Also, this permits the removal o~ these parts if cleaning of the spherical elements becomes necessary. It can be seen that to clean the device all that is required is to wash the spherical elements and the screens. It is not necessary to provide new replacement parts.
During operation of the davice it is necessary to ;
clean the spherical elements 18 and the expansion chamber 24 of their deposits. This is made possible by the provision of a valve 30 secured in the lower end 12 of the body 11, downstream of the scrubbing chamber 17. The valve 30 hereinshown is a valve 7~6 which opens automatically at predetermined time intervals. Whenthe valve opens, the pressure inside the housing 11 will drop causing the flow of air to reverse blowiny back dry air from the outlet port 15 down through the scrubbing chamber 17 and expansion charnber to purge them of their deposits. This purging -is done at a much lower velocity and very little turbulence is created in the reverse direction. As shown, the valve is also provided with a manually operable release member 31 to cause evacuation or cleaning of the chamber 17 manually in the event of power failure or for other needs. Thus, it is seen that it is turbulence, plus centrifugal forces, plus surface impingement -~
and wetting of an artificially increased surface without absorp-tion, as the glass elements naturally are inert and non-absorp- ;
tive, that both scrubbing and polishing of the air is achieved.
In order to monitor the condition of the spherical `
elements in the scrubbing chamber 17 there is provided a pres- ;~ -sure gauge 32 adjacent the inlet port 14 and a further pressure gauge 33 adjacent the outlet port 15. Thus, by monitoring the `
air pressure below and above the scrubbing chamber gives an indication of the cleanliness of the spherical elements. The tubular body 11 is secured substantially vertically by the brackets 34 with the inlet ports 14 being positioned at the `
; :i .
lower end of the body 11.
Briefly, in operation a compressed air flow is passed through a plurality of spherical glass particles to induce tur-bulence in the compressed air and create impingement of compressed ~ ;~
air upon the surface of the spherical elements and centrifuge -~
which results in a film deposit of undesirable particles on the surface of these elements. Periodically7 the valve 30 is opened -whereby to purge the film deposits from the elements and the expansion chamber out of the housing 11. The "purging`' of the deposits from the spherical elements 18 is provided by the -.. ,.. , .-;- , , .,. - ~...... , .- , ,. , ~ .. ~ :
794~
dry air, upstream of the scrubbing chamber 17, which is caused to be sucked back through the chamber 17 and out through the valve 30. Thus, this device provides an air scrubbing appara-tus which is self-cleaning and which requires practically no maintenance.
'' ~ ' - 5 - .
Claims (10)
1. An air scrubbing device comprising a hollow closed housing having an inlet port and an outlet port permitting the passage of compressed air therethrough, an air scrubbing chamber within said housing, said scrubbing chamber containing a plura-lity of spherical glass elements therein for obstruction with the passage of said compressed air through said housing, said spherical glass elements causing turbulence of said compressed air whereby a substantial portion of undesirable particles con-tained in said air will be ejected from said air and deposited on the surface of said spherical elements, and means to evacuate said deposits of undesirable particles from said spherical ele-ments and said chamber.
2. An air scrubbing device as claimed in claim 1 wherein said means to evacuate said deposits is a valve positioned in a wall of said housing downstream of said scrubbing chamber, said valve when open causing a back pressure of dry air through said scrubbing chamber from upstream of said scrubbing chamber and at a lower velocity than the normal flow to blow-off said deposits from the surface of said spherical elements and evacuate it to outside atmosphere through said valve.
3. An air scrubbing device as claimed in claim 2 wherein said valve is automatically operable to cause evacuation of said deposits at predetermined time intervals during the operation of said scrubbing device.
4. An air scrubbing device as claimed in claim 2 wherein said housing is an elongated tubular body closed at both ends, said inlet and outlet ports each being positioned adjacent a respective one of said ends, and an expansion chamber between said inlet port and said scrubbing chamber.
5. An air scrubbing device as claimed in claim 4 wherein a support screen is positioned transversely in said tubular body adjacent said lower end of said body, said spherical elements being supported on said support screen, means above said scrub-bing chamber to prevent displacement of said spherical elements towards said outlet port.
6. An air scrubbing device as claimed in claim 5 wherein said means above said scrubbing chamber is a further screen re-tained on top of said spherical elements by a cage, said end of said tubular body adjacent said outlet port having a removable cover for access to the interior of said tubular body.
7. An air scrubbing device as claimed in claim 6 wherein said tubular body is provided with mounting brackets for securing said tubular body substantially vertically with said inlet port being lowermost.
8. An air scrubbing device as claimed in claim 7 wherein a pressure gauge is secured to said tubular body below and above said scrubbing chamber to monitor the air pressure within said body below and above said scrubbing chamber to give an indication of the effective condition of said spherical elements in said scrubbing chamber.
9. An air scrubbing device as claimed in claim 1 wherein said scrubbing chamber contains at least one hundred spherical elements in height whereby said compressed air will contact approximately one hundred hard spherical surfaces on its travel through said scrubbing chamber and form a film deposit on said surfaces, said film deposit containing water, oil emulsion and/or solid particles contained in said compressed air.
10. A method of removing a substantial portion of unde-sirable particles from a compressed air flow comprising the steps of:
i) passing said compressed air through a plurality of spherical glass elements to cause said compressed air to impinge upon the surface of said elements to form a film deposit of undesirable particles on said surface, said film deposit con-taining water, oil emulsion and/or solid particles contained in said compressed air, and ii) periodically evacuating a substantial portion of said film deposit from said elements and out of said compressed air flow.
i) passing said compressed air through a plurality of spherical glass elements to cause said compressed air to impinge upon the surface of said elements to form a film deposit of undesirable particles on said surface, said film deposit con-taining water, oil emulsion and/or solid particles contained in said compressed air, and ii) periodically evacuating a substantial portion of said film deposit from said elements and out of said compressed air flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA246,788A CA1047946A (en) | 1976-02-27 | 1976-02-27 | Air scrubbing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA246,788A CA1047946A (en) | 1976-02-27 | 1976-02-27 | Air scrubbing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1047946A true CA1047946A (en) | 1979-02-06 |
Family
ID=4105344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA246,788A Expired CA1047946A (en) | 1976-02-27 | 1976-02-27 | Air scrubbing device |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1047946A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109621517A (en) * | 2019-01-17 | 2019-04-16 | 中核第四研究设计工程有限公司 | A kind of combined type baffling wash mill |
-
1976
- 1976-02-27 CA CA246,788A patent/CA1047946A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109621517A (en) * | 2019-01-17 | 2019-04-16 | 中核第四研究设计工程有限公司 | A kind of combined type baffling wash mill |
| CN109621517B (en) * | 2019-01-17 | 2023-11-14 | 中核第四研究设计工程有限公司 | Combined baffling washing device |
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