CA1046379A - Pneumatic fluid preconditioner and flow straightening means for electrostatic precipitators - Google Patents
Pneumatic fluid preconditioner and flow straightening means for electrostatic precipitatorsInfo
- Publication number
- CA1046379A CA1046379A CA254,840A CA254840A CA1046379A CA 1046379 A CA1046379 A CA 1046379A CA 254840 A CA254840 A CA 254840A CA 1046379 A CA1046379 A CA 1046379A
- Authority
- CA
- Canada
- Prior art keywords
- flow
- housing
- vanes
- axis
- ledge
- 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
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/36—Controlling flow of gases or vapour
Landscapes
- Electrostatic Separation (AREA)
- Separating Particles In Gases By Inertia (AREA)
- Cyclones (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
The disclosure relates to a pneumatic fluid preconditioner and flow straightening moans for electrostatic precipitators wherein: a circular in cross section housing is provided with a generally vertical and/or central axis; said housing having a tangential inlet; an inner circular wall of said housing having an inwardly extending ledge above said inlet or spaced therefrom;
flow straightening vanes in said housing above said ledge or spaced therefrom; said vanes having flow receiving edges directed generally toward said inlet; vanes having flow straightening portions substantially parallel to said axis and directed at substantially right angles to the direction of flow from said inlet; the angle of said flow receiving edges of said vanes, relative to flow entering said housing, varying from said inner circular wall of said housing in a direction toward the central axis of said housing; and means for varying the amount of tangential or centrifugal flow distribution relative to said inner circular wall of said housing to thereby render the pre-conditioner adjustable for various flow capacities therethrough.
The disclosure relates to a pneumatic fluid preconditioner and flow straightening moans for electrostatic precipitators wherein: a circular in cross section housing is provided with a generally vertical and/or central axis; said housing having a tangential inlet; an inner circular wall of said housing having an inwardly extending ledge above said inlet or spaced therefrom;
flow straightening vanes in said housing above said ledge or spaced therefrom; said vanes having flow receiving edges directed generally toward said inlet; vanes having flow straightening portions substantially parallel to said axis and directed at substantially right angles to the direction of flow from said inlet; the angle of said flow receiving edges of said vanes, relative to flow entering said housing, varying from said inner circular wall of said housing in a direction toward the central axis of said housing; and means for varying the amount of tangential or centrifugal flow distribution relative to said inner circular wall of said housing to thereby render the pre-conditioner adjustable for various flow capacities therethrough.
Description
10~i379 PRIOR ART
U. S. 3,315,444 and 3,315,445 issued to A.P. DeSeversky, are believed to be representative of pertinent prior art.
BACKGROUND OF THE INVENTION
It has been a problem to attain fluid preconditioning and flow straightening functions in circular in cross section electrostatic precipitators with tangential inlets while maintaining relatively low pressure drop and uniform flow conditions through the entire cross sectional area of the fluid A ^-.. . . .
~ ~ . . . .
i flow pr~con~ition~r an~ strai~htcning el~ments, as well as 2i the ~lectro~es of an electrostatic precipitator. Further, it 31 has been a pro~lem to attain the foregoing advantages while 4 providing for efficient removal of particulate material from pne~lm~tic fluids as well as to control the removal of liquid 6~ mists ther~from to a desired degree. Additionally, it has been 7~ a pro~lem to provide for fluid preconditioning and flow straight-8 ening functions in circular in cross section elect-osta~ic 9~ precipitators, wherein vortex effects may occur relative to such circular in cross section housings having tangential inlets.i 11 Purthermore, it has heretofore been desirable to provide a 12, fluid preconditioning and flow straightening means for circular 131 in cross section electrostatic precipitators which is relatively !
14¦ compact in proportion to the diameter and flow capacity of the 151~ electrostatic precipitator housing and relative to the overall 16'il cross sectional flow area tkerein.
17 ~I SUMMARY OF THE INVENTION
18 ll The present invention comprises a circular in cross 19 ll section housing having a tangential inlet with liquid spray 201l nozzles therein and wherein an inwardly- projecting annular I -21, ledge in the inner wall of the housing functions as a choke ring ¦
22jl so as to provide for a complete revolution of flow in the 23, housing before the tangential flow therein has dispursed into 24~1 an area axially inward relative to said ledge such that the 25, ledge functions as a choke ring to control vortex effects pre-261 liminary to the entrance of the flow into an annular assembly 271, of radially directed vanes which serve as fluid flow straighten-281~ ing structure tending to straightening the fluid flow in the 29 housing from a swirling motion into a substantially axial flow relationship to the axis of the circular in cross section housing 31 so as to provide a substantially laminar flow relationship of 32 the fluid relative to concentric radially spaced apart collector 1~ -2-, . ~ . . . .
:~046379 and discharge electrode structures in the housing.
Furthermore, the inwardly projecting annular ledge collects particulate matter from pneumatic flow in the housing; the annular ledge having a surface disposed at substantially right angles to the axis of the housing and such that particulate matter is centrifugally dis-persed against the wall of the housing and spray nozzles therein wash the particulate matter down the wall of the housing and thus separate it from the air flow which passes upwardly and inwardly around the inner edge of said ledge. Additionally, the invention comprises a generally frusto conical spoiler ring cooperative with said choke ring; the choke ring having an upward surface which is generally frusto conical and the spoiler ring being hollow frusto conical structure adjustable relative to the upper frusto conical surface of the choke ring. The spoiler ring is flexible and has a plurality of means adjustably connecting it in spaced relation to the frusto conical surface of the choke ring so as to provide for adjustment --to vary the spacing of the spoiler ring relative to the choke ring at different locations around the annular area of the choke ring, and to thereby provide for compen-sation for a lack of uniformity of flow at any point around the annular area of the choke ring.
The annular assembly of radially directed vanes is ~uch that each vane is provided with a leading or flow re-ceiving edge directed tow~rd the inlet of the housing so that the edges of these vanes receive flow at an angle to the central or axial flow axis of the housing or at an acute angle relative to a plane at right angles to said axis. Thus the leading or recéiving edges of the vanes are adapted to receive flow of fluid and the flow re-ceiving edges are disposed at a relatively acute angle ~ 3 ~ ~
.
at said plane, which is disposed at right an~les to -the axial flow axis through the housing; said acute angle of said . . , . : . : -'' : ' . . : ' ' ' '- '. ' ,. :
receiving edges being at outermost ends of the vanes near the circular wall of the housing and the angle of said receiving edges increases relative to said plane to-ward the central axis of the housing. Thus, the receiv-ing edges of the vanes have a gradient of angle which is actue relative to said plane or to the horizontal near the outer ends of the vanes and relatively greater toward the axis of the h~using such that the vanes at their leading edges are more nearly parallel to the axis of the housing at or near its central portion, and such that the receiving edges of the vanes near their outer ends adjacent said housing are more nearly horizontal or may be at a more acute angle to said plane. In accordance with the foregoing, tangential fluid flow adjacent the outer wall ~`f said housing is received by the receiving or leading edges of said vanes at a generally acute angle to said plane or to the horizontal and the vanes are curved into portions thereof which extend to straightening portions which are directed substantially axially parallel to the central of flow axis of the circular in cross sec-tion housing so as to straighten the flow of fluid into a more nearly axial direction. The gradient of angle of the receiving edges of the vanes extending from the outer wall toward the axis is aerodynamically compatible with velocity and flow volume throughout the cross section of the circular in cross section housing.
Accordingly, it is an object of the invention to provide a highly efficient fluid preconditioner and flow straightening means for circular in cross section elec-trostatic precipitators which effectively collects ~ - 4 -~6379 particulate matter and which straightens the flow from a tangential direction into an axial direction with a minimum of pressure drop of the fluids passing through the preconditioner and flow straightening means of the - 4a _ ~O~ 79 . I
1 invention.
U. S. 3,315,444 and 3,315,445 issued to A.P. DeSeversky, are believed to be representative of pertinent prior art.
BACKGROUND OF THE INVENTION
It has been a problem to attain fluid preconditioning and flow straightening functions in circular in cross section electrostatic precipitators with tangential inlets while maintaining relatively low pressure drop and uniform flow conditions through the entire cross sectional area of the fluid A ^-.. . . .
~ ~ . . . .
i flow pr~con~ition~r an~ strai~htcning el~ments, as well as 2i the ~lectro~es of an electrostatic precipitator. Further, it 31 has been a pro~lem to attain the foregoing advantages while 4 providing for efficient removal of particulate material from pne~lm~tic fluids as well as to control the removal of liquid 6~ mists ther~from to a desired degree. Additionally, it has been 7~ a pro~lem to provide for fluid preconditioning and flow straight-8 ening functions in circular in cross section elect-osta~ic 9~ precipitators, wherein vortex effects may occur relative to such circular in cross section housings having tangential inlets.i 11 Purthermore, it has heretofore been desirable to provide a 12, fluid preconditioning and flow straightening means for circular 131 in cross section electrostatic precipitators which is relatively !
14¦ compact in proportion to the diameter and flow capacity of the 151~ electrostatic precipitator housing and relative to the overall 16'il cross sectional flow area tkerein.
17 ~I SUMMARY OF THE INVENTION
18 ll The present invention comprises a circular in cross 19 ll section housing having a tangential inlet with liquid spray 201l nozzles therein and wherein an inwardly- projecting annular I -21, ledge in the inner wall of the housing functions as a choke ring ¦
22jl so as to provide for a complete revolution of flow in the 23, housing before the tangential flow therein has dispursed into 24~1 an area axially inward relative to said ledge such that the 25, ledge functions as a choke ring to control vortex effects pre-261 liminary to the entrance of the flow into an annular assembly 271, of radially directed vanes which serve as fluid flow straighten-281~ ing structure tending to straightening the fluid flow in the 29 housing from a swirling motion into a substantially axial flow relationship to the axis of the circular in cross section housing 31 so as to provide a substantially laminar flow relationship of 32 the fluid relative to concentric radially spaced apart collector 1~ -2-, . ~ . . . .
:~046379 and discharge electrode structures in the housing.
Furthermore, the inwardly projecting annular ledge collects particulate matter from pneumatic flow in the housing; the annular ledge having a surface disposed at substantially right angles to the axis of the housing and such that particulate matter is centrifugally dis-persed against the wall of the housing and spray nozzles therein wash the particulate matter down the wall of the housing and thus separate it from the air flow which passes upwardly and inwardly around the inner edge of said ledge. Additionally, the invention comprises a generally frusto conical spoiler ring cooperative with said choke ring; the choke ring having an upward surface which is generally frusto conical and the spoiler ring being hollow frusto conical structure adjustable relative to the upper frusto conical surface of the choke ring. The spoiler ring is flexible and has a plurality of means adjustably connecting it in spaced relation to the frusto conical surface of the choke ring so as to provide for adjustment --to vary the spacing of the spoiler ring relative to the choke ring at different locations around the annular area of the choke ring, and to thereby provide for compen-sation for a lack of uniformity of flow at any point around the annular area of the choke ring.
The annular assembly of radially directed vanes is ~uch that each vane is provided with a leading or flow re-ceiving edge directed tow~rd the inlet of the housing so that the edges of these vanes receive flow at an angle to the central or axial flow axis of the housing or at an acute angle relative to a plane at right angles to said axis. Thus the leading or recéiving edges of the vanes are adapted to receive flow of fluid and the flow re-ceiving edges are disposed at a relatively acute angle ~ 3 ~ ~
.
at said plane, which is disposed at right an~les to -the axial flow axis through the housing; said acute angle of said . . , . : . : -'' : ' . . : ' ' ' '- '. ' ,. :
receiving edges being at outermost ends of the vanes near the circular wall of the housing and the angle of said receiving edges increases relative to said plane to-ward the central axis of the housing. Thus, the receiv-ing edges of the vanes have a gradient of angle which is actue relative to said plane or to the horizontal near the outer ends of the vanes and relatively greater toward the axis of the h~using such that the vanes at their leading edges are more nearly parallel to the axis of the housing at or near its central portion, and such that the receiving edges of the vanes near their outer ends adjacent said housing are more nearly horizontal or may be at a more acute angle to said plane. In accordance with the foregoing, tangential fluid flow adjacent the outer wall ~`f said housing is received by the receiving or leading edges of said vanes at a generally acute angle to said plane or to the horizontal and the vanes are curved into portions thereof which extend to straightening portions which are directed substantially axially parallel to the central of flow axis of the circular in cross sec-tion housing so as to straighten the flow of fluid into a more nearly axial direction. The gradient of angle of the receiving edges of the vanes extending from the outer wall toward the axis is aerodynamically compatible with velocity and flow volume throughout the cross section of the circular in cross section housing.
Accordingly, it is an object of the invention to provide a highly efficient fluid preconditioner and flow straightening means for circular in cross section elec-trostatic precipitators which effectively collects ~ - 4 -~6379 particulate matter and which straightens the flow from a tangential direction into an axial direction with a minimum of pressure drop of the fluids passing through the preconditioner and flow straightening means of the - 4a _ ~O~ 79 . I
1 invention.
2 Another ob,ect of tne invention is to provide a novel
3~ means for convertins pneumatic fluid flow from a tangential or
4 centrifugal flow condition to an axial flow condition.
Another object of the invention is to provide a novel 61 annular assembly of flow straightening vanes having flow receiving ~ edges provided with a gradient of angle from the outer wall of 8 a circular in cross section housing toward the central axis 9 thereof, thereby corresponding to flow velocity and pressure throughout the cross section of the circular in cross section 11' housing.
12j Another object of the invention is to ~rovide a fluid 13 ll preconditioner and flow straightening means wherein a circular 14l' ln cross section housing is provided with a tangential inlet and ¦
15ll wherein an inwardly projecting ledge or choke ring is disposed 1611 above said inlet so as to provide for a complete revolution of ~ tluld flow in the housing to remove particulate matter and to 18 ll remove mist which is induced in the housing by spray nozzles 19l and such that a complete revolution is accomplished so as to also provide for modulation of vortex effects in order that the 21 !I flow,leaving the choke ring,disperses into a cross section in 22 the housing wherein a circular assembly of radially disposed 23 ~, vanes receive the fluid flow dispersed in such a manner that a 24l~ gradient of angle of the flow receiving edges extending from ¦
25`, the outer wall of the housing toward the axis thereof efficiently, 26, handles the flow so as to straighten the flow into a generally 27 axial direction and in uniformity so that there is a uniform I -28l flow of fluid throughout the cross section of the housing 29~! and so that substantially uniform velocity exists throughout the circular in cross section housing so that the rlow is 31~ sub~tantially axial and laminar relative to an assembly of 32i electrostatic collector and discharge electrodes which are ,' ~
.''' ' ~
10~b;379 arranged in concentric relationship with each other and radially spaced apart.
Another object of the invention is to provide a very efficient fluid flow preconditioning and flow straightening means particularly adapted to large diameter electrostatic precipita-tors for the purpose of ~btaining high performance with rela-tively low pressure drop, fluid flow straightening and the efficient removal of mist from the fluids flowing into an area wherein the flow is received between concentric spaced apart circular in cross section collector and discharge electrode structures.
Another object of the invention is to provide a novel adjustable spoiler ring, which is a hollow frusto conical ring cooperable with a frusto conical surface of an inwardly directed ledge inside the housing of the invention; the housing being circular in cross section and the spoiler ring being adjustable relative to the frusto conical surface of the ledge or choke ring so as to provide means for adjusting the preconditioner of the invention to acco~modate varying flow volume through the preconditioner.
Thus, in accordance with the present teachings, a fluid preconditioner and flow straightening means is provided ` which is suitable for electrostatic precipitators and comprises ; a fluid receiver and preconditioner, a housing having an inlet which is adapted to receive contaminated pneumatic fluid therein with the housing having a generally circular cross section and a normally vertical concentric axis. The housing also has a generally tangential fluid inlet and an annular inner wall.
An annular assembly of flow straightening vanes is provided which has inner and outer ends with the vanes being disposed radially with respect to the axis with the inner ends being C
. . ..
nearest to the axis. Each of the vanes has lower portions provided with flow receiving edges which are directed at an angle toward the inlet and angularly disposed relative to the vertical axis. Each of the vanes has flow straightening portions extending upwardly from the flow receiving edges with such portions being substantially parallel to the axis.
Further objects and advantages of the invention may be apparent from the following specification, appended claims and accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a fragmentary perspective view of an upper portion of the fluid preconditioner and flow straightening means of the invention showing portions in section and broken away to amplify the illustration;
Fig. 2 is a perspective view similar to Fig. 1 showing the lower end of the structure disclosed in Fig. 1 such that Fig. 2 shows a lower continuity of Fig. l; Fig. 2 showing portions broken away and in section to amplify the illustration;
- 6a -1041~;379 1 Fig. 3 is a reduced cross sectional view taken from the 2, line 3-3 of Fig. 2;
3 Fig. 4 is an enlarged sectional view taken from the ~ line 4-4 of Fig. 1 showing the cross section of one of the flow
Another object of the invention is to provide a novel 61 annular assembly of flow straightening vanes having flow receiving ~ edges provided with a gradient of angle from the outer wall of 8 a circular in cross section housing toward the central axis 9 thereof, thereby corresponding to flow velocity and pressure throughout the cross section of the circular in cross section 11' housing.
12j Another object of the invention is to ~rovide a fluid 13 ll preconditioner and flow straightening means wherein a circular 14l' ln cross section housing is provided with a tangential inlet and ¦
15ll wherein an inwardly projecting ledge or choke ring is disposed 1611 above said inlet so as to provide for a complete revolution of ~ tluld flow in the housing to remove particulate matter and to 18 ll remove mist which is induced in the housing by spray nozzles 19l and such that a complete revolution is accomplished so as to also provide for modulation of vortex effects in order that the 21 !I flow,leaving the choke ring,disperses into a cross section in 22 the housing wherein a circular assembly of radially disposed 23 ~, vanes receive the fluid flow dispersed in such a manner that a 24l~ gradient of angle of the flow receiving edges extending from ¦
25`, the outer wall of the housing toward the axis thereof efficiently, 26, handles the flow so as to straighten the flow into a generally 27 axial direction and in uniformity so that there is a uniform I -28l flow of fluid throughout the cross section of the housing 29~! and so that substantially uniform velocity exists throughout the circular in cross section housing so that the rlow is 31~ sub~tantially axial and laminar relative to an assembly of 32i electrostatic collector and discharge electrodes which are ,' ~
.''' ' ~
10~b;379 arranged in concentric relationship with each other and radially spaced apart.
Another object of the invention is to provide a very efficient fluid flow preconditioning and flow straightening means particularly adapted to large diameter electrostatic precipita-tors for the purpose of ~btaining high performance with rela-tively low pressure drop, fluid flow straightening and the efficient removal of mist from the fluids flowing into an area wherein the flow is received between concentric spaced apart circular in cross section collector and discharge electrode structures.
Another object of the invention is to provide a novel adjustable spoiler ring, which is a hollow frusto conical ring cooperable with a frusto conical surface of an inwardly directed ledge inside the housing of the invention; the housing being circular in cross section and the spoiler ring being adjustable relative to the frusto conical surface of the ledge or choke ring so as to provide means for adjusting the preconditioner of the invention to acco~modate varying flow volume through the preconditioner.
Thus, in accordance with the present teachings, a fluid preconditioner and flow straightening means is provided ` which is suitable for electrostatic precipitators and comprises ; a fluid receiver and preconditioner, a housing having an inlet which is adapted to receive contaminated pneumatic fluid therein with the housing having a generally circular cross section and a normally vertical concentric axis. The housing also has a generally tangential fluid inlet and an annular inner wall.
An annular assembly of flow straightening vanes is provided which has inner and outer ends with the vanes being disposed radially with respect to the axis with the inner ends being C
. . ..
nearest to the axis. Each of the vanes has lower portions provided with flow receiving edges which are directed at an angle toward the inlet and angularly disposed relative to the vertical axis. Each of the vanes has flow straightening portions extending upwardly from the flow receiving edges with such portions being substantially parallel to the axis.
Further objects and advantages of the invention may be apparent from the following specification, appended claims and accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a fragmentary perspective view of an upper portion of the fluid preconditioner and flow straightening means of the invention showing portions in section and broken away to amplify the illustration;
Fig. 2 is a perspective view similar to Fig. 1 showing the lower end of the structure disclosed in Fig. 1 such that Fig. 2 shows a lower continuity of Fig. l; Fig. 2 showing portions broken away and in section to amplify the illustration;
- 6a -1041~;379 1 Fig. 3 is a reduced cross sectional view taken from the 2, line 3-3 of Fig. 2;
3 Fig. 4 is an enlarged sectional view taken from the ~ line 4-4 of Fig. 1 showing the cross section of one of the flow
5~ straightening vanes of the invention;
6I Fig. S is a view similar to Fig. 4 and taken from the 7'; line 5-5 of Fig. 1 showing the cross section of the vane disclose~
8l in Fig~ 4 but disposed at a different radius thereby illustrating 9I gradient of the flow receiving angle of the vanes;
10ll Fig. 6 is another view similar to Figs. 4 and 5 taken ~ from the line 6-6 of Fig. 1 showing the cross section of the 12 ll vane at a disposition closer to the axis than that of Figs. 4 13l and 5 and further illustrating the gradient of the flow receiving 14 angle of the vanes at a position closer to the central axis of 15¦ the housing;
16l Fig. 7 is a fragmentary sectional view taken from the 17 ¦¦ line 7-7 of Fig. l;
18 1I Fig. 8 is a side elevational view taken from the line 19ll 8-8 of Fig. 7 showing an outer side of the housing of the 20 ll invention and further showing portions broken away and in 21,` section to amplify the illustration;
22 ll Fig. 9 is a fragmentary sectional view of a modification 23 ¦l of the invention showing a lower portion of the preconditioner 24 ll housing with a choke ring and spoiler ring mechanism therein;
25 l' Fig. 10 is a sectional view on reduced scale taken from 26,ll the line 10-10 of Fig. 9;
27l Fig. 11 is an enlarged fragmentary sectional view taken 281i from the line 11-11 of Fig. 10;
29 l, Fig. 12 is a sectional view similar to Fig. 11 but 30, showing a further modification of the invention; and 31 ll Fig. 13 is a view similar to Fig. 12 showing a further 32 manually operable spoiler ring adjusting mechanism of the , I I
r 10~37g ,, invention.
2 D~SCRIPTION OF Tl~ PREF~RRED ~MBODI~5ENTS
3 ~s shown in Figs. 1, 2 and 3 of the drawings, the 4 invention coMprises a circular in cross section housing 10 5~l having a central or axial flow axis 11. The housing is provided
6I Fig. S is a view similar to Fig. 4 and taken from the 7'; line 5-5 of Fig. 1 showing the cross section of the vane disclose~
8l in Fig~ 4 but disposed at a different radius thereby illustrating 9I gradient of the flow receiving angle of the vanes;
10ll Fig. 6 is another view similar to Figs. 4 and 5 taken ~ from the line 6-6 of Fig. 1 showing the cross section of the 12 ll vane at a disposition closer to the axis than that of Figs. 4 13l and 5 and further illustrating the gradient of the flow receiving 14 angle of the vanes at a position closer to the central axis of 15¦ the housing;
16l Fig. 7 is a fragmentary sectional view taken from the 17 ¦¦ line 7-7 of Fig. l;
18 1I Fig. 8 is a side elevational view taken from the line 19ll 8-8 of Fig. 7 showing an outer side of the housing of the 20 ll invention and further showing portions broken away and in 21,` section to amplify the illustration;
22 ll Fig. 9 is a fragmentary sectional view of a modification 23 ¦l of the invention showing a lower portion of the preconditioner 24 ll housing with a choke ring and spoiler ring mechanism therein;
25 l' Fig. 10 is a sectional view on reduced scale taken from 26,ll the line 10-10 of Fig. 9;
27l Fig. 11 is an enlarged fragmentary sectional view taken 281i from the line 11-11 of Fig. 10;
29 l, Fig. 12 is a sectional view similar to Fig. 11 but 30, showing a further modification of the invention; and 31 ll Fig. 13 is a view similar to Fig. 12 showing a further 32 manually operable spoiler ring adjusting mechanism of the , I I
r 10~37g ,, invention.
2 D~SCRIPTION OF Tl~ PREF~RRED ~MBODI~5ENTS
3 ~s shown in Figs. 1, 2 and 3 of the drawings, the 4 invention coMprises a circular in cross section housing 10 5~l having a central or axial flow axis 11. The housing is provided
6 with a tangential inlet 12 adapted to receive flow in the 7I direction, as indicated by the arrow A in' ~g. 3 of the drawings.
8 Disposed in said inlet are spray nozzles 14 adapted to spray 9~ uid into the fluid f~owing into the inlet, and these spray 10" nozzles 14 are supplied water through inlet manifolds 16. The 11l water is supplied under pressure so as to provide for the for-12l mation of mist in the fluid entering the inlet 12. The fluid 13ll entering the inlet 12 is pneumatic fluid which has been contam-14 1 inated and may carry various contaminants such as solid partic-15l ulate matter as well as very fine pollutants.
16 ll Disposed internally of the housing are a plurality of 17 ll inwardly directed spray nozzles 18 which are adapted to spray 18¦~ fluid flowing tangentially around the inner side of the outer 19!! wall of the housing.
20 1I The housing is provided with an inner wall surface 20 21 ¦l adjacent to which tangential fluid flow occurs and this inner 22 ~I wall 20 is provided with an inwardly projecting ledge 22 which 23,1 serves as an aerodynamic choke. It extends from the wall 20 24 jl radially inward toward the axis 11 which is the central axis 25l~ of the housing and this inwardly projecting ledge 22 is a circu-26, lar structure serving as an aerodynamic choke and also a struc-27 ` ture under which large particulate matter may be removed from 28l the flow as it makes a complete centrifugal revolution around 29 ll the inner wall 20.
3o 1! The housing 10 is provided with a downwardly converging 31,l bottom portion 24 which is substantially enclosed except for 32l drain opening 26 which passes to a drain tube 28 adapted to !1 -8-~ I
10~79 1 drain liquid and ma~ter removed from the pneumatic fluid in the 2! hOusing.
The circular in cross section housing 10 is supported 4 by legs 30 such that the central axis 11 is substantially vertically disposed and so that pneumatic fluid flow introduced 6l~ tangentially in the housing 12 makes a full revolution below 7l the choke ledge 22 and such that particulate matter trapped 8'l therebelow is wetted by spray from the nozzles 14 and 18 and 9l, thus, drains downwardly along the inner wall 22, the downwardly 10l converging bottom 24 and out through the drain opening 26. This j 11l occurs during the first complete revolution of pneumatic fluid 12¦, against the inner wall 20 below a substantially horizontal 13l portion 32 of the choke ledge 22.
14, It will be understood that the choke ledge 22 is gener-1~,l ally ring shaped and that the lower surface 32 is substantialiy 16I horizontal or at right angles to the axis 11, while the upper 17 ll surface 34 thereof is generally frusto conical and is thus 18 1l inclined from an inner annular edge 36 to the inner wall 20 of 19¦l tlle housing 10. Thus, flow which changes direction from tangen-20 1l tial flow against the wall 20 passes upward over the inwardly 21 ¦I directed edge 36 and passes upward along the inclinèd or frusto 22 1l conical portion 34 and throughout the cross section of the 23 housing whereby the annular ledge or choke ring 22 tends to 241l minimize vortex effects and to cause dispersion of the flow 25 1 from tangential to the cross section of the interior of the 26 !! housing 10.
27l Additionally, the lower horizontal surface 32 tends to 28~l collect liquid mist as well as the particulate matter which has 29 , been wetted and centrifugally forced outward so that the fluid 30 I flow in making a complete revolution in the housing below the 31l choke ledge 22 is relieved of a substantial amount of mist as 32, well as the relatively large particulate matter before the flow _g_ !l I
104~i379 1 disperses inwardly around the inwardly directed edge 36 of the 2l ledge 22.
3 Disposed above the riny shaped choke ledge 22 is an ~ annular assembly of flow straightening vanes designated 38.
5~ These are shown in Fig. 1 and in cross section in Figs. 4, 5 6 and 6.
8 Disposed in said inlet are spray nozzles 14 adapted to spray 9~ uid into the fluid f~owing into the inlet, and these spray 10" nozzles 14 are supplied water through inlet manifolds 16. The 11l water is supplied under pressure so as to provide for the for-12l mation of mist in the fluid entering the inlet 12. The fluid 13ll entering the inlet 12 is pneumatic fluid which has been contam-14 1 inated and may carry various contaminants such as solid partic-15l ulate matter as well as very fine pollutants.
16 ll Disposed internally of the housing are a plurality of 17 ll inwardly directed spray nozzles 18 which are adapted to spray 18¦~ fluid flowing tangentially around the inner side of the outer 19!! wall of the housing.
20 1I The housing is provided with an inner wall surface 20 21 ¦l adjacent to which tangential fluid flow occurs and this inner 22 ~I wall 20 is provided with an inwardly projecting ledge 22 which 23,1 serves as an aerodynamic choke. It extends from the wall 20 24 jl radially inward toward the axis 11 which is the central axis 25l~ of the housing and this inwardly projecting ledge 22 is a circu-26, lar structure serving as an aerodynamic choke and also a struc-27 ` ture under which large particulate matter may be removed from 28l the flow as it makes a complete centrifugal revolution around 29 ll the inner wall 20.
3o 1! The housing 10 is provided with a downwardly converging 31,l bottom portion 24 which is substantially enclosed except for 32l drain opening 26 which passes to a drain tube 28 adapted to !1 -8-~ I
10~79 1 drain liquid and ma~ter removed from the pneumatic fluid in the 2! hOusing.
The circular in cross section housing 10 is supported 4 by legs 30 such that the central axis 11 is substantially vertically disposed and so that pneumatic fluid flow introduced 6l~ tangentially in the housing 12 makes a full revolution below 7l the choke ledge 22 and such that particulate matter trapped 8'l therebelow is wetted by spray from the nozzles 14 and 18 and 9l, thus, drains downwardly along the inner wall 22, the downwardly 10l converging bottom 24 and out through the drain opening 26. This j 11l occurs during the first complete revolution of pneumatic fluid 12¦, against the inner wall 20 below a substantially horizontal 13l portion 32 of the choke ledge 22.
14, It will be understood that the choke ledge 22 is gener-1~,l ally ring shaped and that the lower surface 32 is substantialiy 16I horizontal or at right angles to the axis 11, while the upper 17 ll surface 34 thereof is generally frusto conical and is thus 18 1l inclined from an inner annular edge 36 to the inner wall 20 of 19¦l tlle housing 10. Thus, flow which changes direction from tangen-20 1l tial flow against the wall 20 passes upward over the inwardly 21 ¦I directed edge 36 and passes upward along the inclinèd or frusto 22 1l conical portion 34 and throughout the cross section of the 23 housing whereby the annular ledge or choke ring 22 tends to 241l minimize vortex effects and to cause dispersion of the flow 25 1 from tangential to the cross section of the interior of the 26 !! housing 10.
27l Additionally, the lower horizontal surface 32 tends to 28~l collect liquid mist as well as the particulate matter which has 29 , been wetted and centrifugally forced outward so that the fluid 30 I flow in making a complete revolution in the housing below the 31l choke ledge 22 is relieved of a substantial amount of mist as 32, well as the relatively large particulate matter before the flow _g_ !l I
104~i379 1 disperses inwardly around the inwardly directed edge 36 of the 2l ledge 22.
3 Disposed above the riny shaped choke ledge 22 is an ~ annular assembly of flow straightening vanes designated 38.
5~ These are shown in Fig. 1 and in cross section in Figs. 4, 5 6 and 6.
7,l The individual vanes 40 of the assembly 38 are each
8~ provided with an outer end 42 which is disposed adjacent the 9ll inner wall 20 of the housing and these vanes are provided with lO'' inner ends 44 which are disposed nearer to the central axis 11, 11 the inner ends 44 being abuted to a circular in cross section 12 I' or tubular member 47 concentric with the axis 11.
13, Each vane 40, near its outer end 42, is provided with 14l' a cross sectional shape such as shown in Fig. 4 of the drawings, 15l' this cross sectional shape including a leading or flow receiving 1~ edge 46 directed toward the tangential inlet 12; the edge 46 17 ll actually including a portion disposed at an angle designated 48 18 l in Fig. 4 of the drawings; this angle being acute relative to 19ll the horizontal or to a plane at right angles to the central axis ¦
20 1, 12; this plane being represented by line 50 in Fig. 4 of the 21 ' drawings. The edges 46 are thus disposed horizontally or in a 22 1~ plane at right angles to the flow axis 11. Integral with the 23 1l leading edge or receiving edge 46 is an upwardly curved portion 24 11 52 which is integral with a straight portion 54 which is gener- ¦
25 ll, ally parallel to the axis 11 of the housing 10.
26 ¦l As shown in Fig. 5 of the drawings, which is a cross 27 ll section of one of the vanes 40 nearer to the axis 11 than the 1 28 cross section shown in Fig. 4. The leading or flow receiving 29 ¦l edge 46 is disposed at an angle 56 relative to the horizontal 30,l represented by the line 50 and this angle 56 is rnuch greater 31 ll than the angle 48 shown in Fig. 4 of the drawings. And as 32 I shown in Fig. 6 of the drawings, the angle of the flow receiving , ll l _ 11 ..... __ ~ _ 1 edge portion 46 is designated 58 and this angle 58 is greater 2' relative to the horizontal or plane 50 as compared to the angle !i I
3ll 56 shown in Figs. 5 or 4. Accordingly, the angle 48, shown in 4 Fig. 4, is acute relative to the horizontal 50 while the angle 5l 56 and 58 represent a gradient of the angle of the receiving 6l edge portions extending from an acute angle at the outer ends 7 ll 42 to a relatively greater angle to the plane 50 at the inner 8l ends 44 of the vanes. The normally upper portions of the vanes 9l being provided with straight portions 54, as shown in all of the !
10l! views Figs. 4, 5 and 6. These straight portions 54 are all ll !I substantially parallel to the axis ll so that flow leaving the 12 ll entire cross section of the circular assembly of radlal vanes 13'l designated 38 is substantially axial and this axial flow is 14l' adapted to provide for porper laminar flow between electrostatic 15lj collector electrodes 63 and respective discharge electrodes 16l concentrically disposed in spaced relationship to each other 17l around the central axis ll in the housing lO.
18 ll A concentric assembly of circular in cross section elec-19ll trostatic collector electrodes 63 are disposed above the flow 20ll straightening vanes 40 and these collector electrodes are con-2, 1! centric with the central axis ll. The collector electrodes, 22 ¦¦ being spaced apart and of successively increasing diameters in 23 a direction radially away from the axis ll. The collector 24 ~¦ electrodes 63 are provided with annular lower edges 65 and 1 25 ll generally annular assemblies of venturi members 67 and are 26 ll disposed below respective lower edges 65 of the collector elec-27 ll trodes 63. Each venturi member is provided with opposed gener- ¦
28ll ally convex surface portions 69 whereby adjacent venturi members 29 ll below adjacent collector electrodes have adjacent convex portions 30 l' which cooperate to provide generally converging diverging venturi 31 ¦I inlets between adjacent ones of said collector electrodes.
32 ll~ It will be seen that in general the cross sectional !l I
_ li , .. . .. . .
~04~379 1~ shape of the vanes 40, as illustrated in Figs. 4, 5 and 6 is 2. generally S-shaped.
3ll The gradient of angle of the flow receiving edge portions 4 46, as hereinbefore disclosed, provides for a generally radially inward dispersion of fluid flow and pressure inasmuch as flow 6 tends to spiral in the housing below the vane assembly 38 and 7 ll to concentrate adjacent the inner wall 20. With the gradient 8~ of flow receiving angle of the leading or receiving edges 46,
13, Each vane 40, near its outer end 42, is provided with 14l' a cross sectional shape such as shown in Fig. 4 of the drawings, 15l' this cross sectional shape including a leading or flow receiving 1~ edge 46 directed toward the tangential inlet 12; the edge 46 17 ll actually including a portion disposed at an angle designated 48 18 l in Fig. 4 of the drawings; this angle being acute relative to 19ll the horizontal or to a plane at right angles to the central axis ¦
20 1, 12; this plane being represented by line 50 in Fig. 4 of the 21 ' drawings. The edges 46 are thus disposed horizontally or in a 22 1~ plane at right angles to the flow axis 11. Integral with the 23 1l leading edge or receiving edge 46 is an upwardly curved portion 24 11 52 which is integral with a straight portion 54 which is gener- ¦
25 ll, ally parallel to the axis 11 of the housing 10.
26 ¦l As shown in Fig. 5 of the drawings, which is a cross 27 ll section of one of the vanes 40 nearer to the axis 11 than the 1 28 cross section shown in Fig. 4. The leading or flow receiving 29 ¦l edge 46 is disposed at an angle 56 relative to the horizontal 30,l represented by the line 50 and this angle 56 is rnuch greater 31 ll than the angle 48 shown in Fig. 4 of the drawings. And as 32 I shown in Fig. 6 of the drawings, the angle of the flow receiving , ll l _ 11 ..... __ ~ _ 1 edge portion 46 is designated 58 and this angle 58 is greater 2' relative to the horizontal or plane 50 as compared to the angle !i I
3ll 56 shown in Figs. 5 or 4. Accordingly, the angle 48, shown in 4 Fig. 4, is acute relative to the horizontal 50 while the angle 5l 56 and 58 represent a gradient of the angle of the receiving 6l edge portions extending from an acute angle at the outer ends 7 ll 42 to a relatively greater angle to the plane 50 at the inner 8l ends 44 of the vanes. The normally upper portions of the vanes 9l being provided with straight portions 54, as shown in all of the !
10l! views Figs. 4, 5 and 6. These straight portions 54 are all ll !I substantially parallel to the axis ll so that flow leaving the 12 ll entire cross section of the circular assembly of radlal vanes 13'l designated 38 is substantially axial and this axial flow is 14l' adapted to provide for porper laminar flow between electrostatic 15lj collector electrodes 63 and respective discharge electrodes 16l concentrically disposed in spaced relationship to each other 17l around the central axis ll in the housing lO.
18 ll A concentric assembly of circular in cross section elec-19ll trostatic collector electrodes 63 are disposed above the flow 20ll straightening vanes 40 and these collector electrodes are con-2, 1! centric with the central axis ll. The collector electrodes, 22 ¦¦ being spaced apart and of successively increasing diameters in 23 a direction radially away from the axis ll. The collector 24 ~¦ electrodes 63 are provided with annular lower edges 65 and 1 25 ll generally annular assemblies of venturi members 67 and are 26 ll disposed below respective lower edges 65 of the collector elec-27 ll trodes 63. Each venturi member is provided with opposed gener- ¦
28ll ally convex surface portions 69 whereby adjacent venturi members 29 ll below adjacent collector electrodes have adjacent convex portions 30 l' which cooperate to provide generally converging diverging venturi 31 ¦I inlets between adjacent ones of said collector electrodes.
32 ll~ It will be seen that in general the cross sectional !l I
_ li , .. . .. . .
~04~379 1~ shape of the vanes 40, as illustrated in Figs. 4, 5 and 6 is 2. generally S-shaped.
3ll The gradient of angle of the flow receiving edge portions 4 46, as hereinbefore disclosed, provides for a generally radially inward dispersion of fluid flow and pressure inasmuch as flow 6 tends to spiral in the housing below the vane assembly 38 and 7 ll to concentrate adjacent the inner wall 20. With the gradient 8~ of flow receiving angle of the leading or receiving edges 46,
9~ the flow tends to be partially dispersed inwardly toward the 10l axis ll to thereby provide for even distribution of flow and 11l pressure throughout the cross section of the housing at outlet 12l edges of the vanes which outlet edges are designated 62.
13 It will be understood that the flow s'raightening 14l characteristics of the radially disposed vanes 40 are combined with 15l flow and pressure equalizing functions so as to provide for 16 1 optimum flow characteristics of the fluid leaving the flow 17 ¦I straightening portions 54 and entering between the radially 18 ll spaced apart concentric electrode structures 63 and 64 and such 19ll that the flow throughout the cross section of the housing is 20 ~I nearly optimum with relation to the desired flow characteristics 21 ll between the collector and discharge electrodes 63 and 64 22 1I respectivelY
23l, The vanes 40, at their intermediate portions, are pro-24 1I vided with a structural supporting ring 66, as shown in Fig. l 25!l of the drawings, which tends to maintain the assembly 38 rigid 26, and to provide for the utilization of a lesser number of the 27 l vanes 40 near the central tubular member 46 than in a position 28ll near the wall 20 of the housing lO. Thus, the spacing of the 29 ll vanes 40 may be maintained at optimum by means of the intermedi- ¦
ate structural ring 66. This arrangement provides for the 31l construction of large diameter vane assemblies 38 with the 32 1I desirable spacing of the vanes near the inner surface of the 1 outer wall 20 and also fo1 t~e ;~eslrable spaclng of the vanes 2 40 adjacent the much smaller diameter of the tubular member 46 3 near the central axis 11, all as shown best in Fig. 1 of the 4l drawlngs.
As shown in Figs. 9, 10, 11 and 12, the annular ledge 6 ll or choke ring is provided with an upper generally frusto conical 71~ surface 34 and a lower surface 32 which is disposed substantially 81 at right angles to the central axis 11 of the housing 10. The g~I surface 32 projects from the inner wall surface 20 of the 10ll housing 10 to its inner edge 36 which is annular; and the 111 hereinbefore described frusto conical surface 34 of the annular 12 ll ledge or choke ring is diverging in the direction of an arrow A
13 1 as shown in Fig. 9 of the drawings, which is toward the outlet : 14l,l 13 of the housing, as shown in Fig. 1 of the drawings. This 15~l diverging frusto conical surface 34 extends to the inner wall 20 16jl of the housing and toward the hereinbefore described assembly of 7 17 I straightener vanes 40 constructed as hereinbefore described.
18 1l A hollow annular frusto conical spoiler ring 74 is 19l provided with a frusto conical wall 76, which diverges in the 201~ direction of the arrow A toward the outlet 13 of the housing 10.
21!1 This frusto conical ring portion 76 is substantially parallel 22 ¦¦ with the frusto conical portion 34 and generally conforming 23 1! thereto. This wall 76 is spaced from the frusto conical portion 24 34 to provide for an annular generally frusto conical slot 78 25 I which is directed generally outward toward the inner wall portion 26 1 20 of the housing 10. The frusto conical spoiler ring 74 is 27 ~ provided with a peripheral portion 80 which is smaller in diamete ~1 28 I! than the diameter of the inner wall 20 of the housing 10 and ; 29 ¦I the frusto conical ring 74 is provided with an inner or lower ,: 301' edge portion 82 defining a circular opening through which fluid 31¦l may flow, as indicated by arrows B. The lower edge of the ~2 I frusto conical spoiler ring 74 is of a small diameter than the ,.
L
. .
~046379 1 inner edge 36 of the frusto conical ledge or choke ring. The 2l inner edge 82 of the spoiler ring 74 projects axially beyond the 3 surface 32 of the choke ring, as shown best in Fig. 9 of the 4 1I drawings, whereby centrifugal flow inside the housing below the 5l surface 32 of the choke ring or ledge is guided into the frusto 6~ conical slot 78 and the cross section of this slot may be varied ¦
7l~ in accordance with the operation of a plurality of adjustment 8ll mechanisms 84 which, as shown in Fig. 10, are spaced around the 9' annular structure of the spoiler ring 74 and the choke ring
13 It will be understood that the flow s'raightening 14l characteristics of the radially disposed vanes 40 are combined with 15l flow and pressure equalizing functions so as to provide for 16 1 optimum flow characteristics of the fluid leaving the flow 17 ¦I straightening portions 54 and entering between the radially 18 ll spaced apart concentric electrode structures 63 and 64 and such 19ll that the flow throughout the cross section of the housing is 20 ~I nearly optimum with relation to the desired flow characteristics 21 ll between the collector and discharge electrodes 63 and 64 22 1I respectivelY
23l, The vanes 40, at their intermediate portions, are pro-24 1I vided with a structural supporting ring 66, as shown in Fig. l 25!l of the drawings, which tends to maintain the assembly 38 rigid 26, and to provide for the utilization of a lesser number of the 27 l vanes 40 near the central tubular member 46 than in a position 28ll near the wall 20 of the housing lO. Thus, the spacing of the 29 ll vanes 40 may be maintained at optimum by means of the intermedi- ¦
ate structural ring 66. This arrangement provides for the 31l construction of large diameter vane assemblies 38 with the 32 1I desirable spacing of the vanes near the inner surface of the 1 outer wall 20 and also fo1 t~e ;~eslrable spaclng of the vanes 2 40 adjacent the much smaller diameter of the tubular member 46 3 near the central axis 11, all as shown best in Fig. 1 of the 4l drawlngs.
As shown in Figs. 9, 10, 11 and 12, the annular ledge 6 ll or choke ring is provided with an upper generally frusto conical 71~ surface 34 and a lower surface 32 which is disposed substantially 81 at right angles to the central axis 11 of the housing 10. The g~I surface 32 projects from the inner wall surface 20 of the 10ll housing 10 to its inner edge 36 which is annular; and the 111 hereinbefore described frusto conical surface 34 of the annular 12 ll ledge or choke ring is diverging in the direction of an arrow A
13 1 as shown in Fig. 9 of the drawings, which is toward the outlet : 14l,l 13 of the housing, as shown in Fig. 1 of the drawings. This 15~l diverging frusto conical surface 34 extends to the inner wall 20 16jl of the housing and toward the hereinbefore described assembly of 7 17 I straightener vanes 40 constructed as hereinbefore described.
18 1l A hollow annular frusto conical spoiler ring 74 is 19l provided with a frusto conical wall 76, which diverges in the 201~ direction of the arrow A toward the outlet 13 of the housing 10.
21!1 This frusto conical ring portion 76 is substantially parallel 22 ¦¦ with the frusto conical portion 34 and generally conforming 23 1! thereto. This wall 76 is spaced from the frusto conical portion 24 34 to provide for an annular generally frusto conical slot 78 25 I which is directed generally outward toward the inner wall portion 26 1 20 of the housing 10. The frusto conical spoiler ring 74 is 27 ~ provided with a peripheral portion 80 which is smaller in diamete ~1 28 I! than the diameter of the inner wall 20 of the housing 10 and ; 29 ¦I the frusto conical ring 74 is provided with an inner or lower ,: 301' edge portion 82 defining a circular opening through which fluid 31¦l may flow, as indicated by arrows B. The lower edge of the ~2 I frusto conical spoiler ring 74 is of a small diameter than the ,.
L
. .
~046379 1 inner edge 36 of the frusto conical ledge or choke ring. The 2l inner edge 82 of the spoiler ring 74 projects axially beyond the 3 surface 32 of the choke ring, as shown best in Fig. 9 of the 4 1I drawings, whereby centrifugal flow inside the housing below the 5l surface 32 of the choke ring or ledge is guided into the frusto 6~ conical slot 78 and the cross section of this slot may be varied ¦
7l~ in accordance with the operation of a plurality of adjustment 8ll mechanisms 84 which, as shown in Fig. 10, are spaced around the 9' annular structure of the spoiler ring 74 and the choke ring
10'l hereinbefore described.
11 I As shown in Figs. 9, 10 and 11, each mechanism 84 is
12 I provided with an adjustment screw 86 carrying a miter gear 88
13 ! which meshes with a miter gear 90. The miter gear 90 is mounted ~
14¦j on a shaft 92 generally in a bearing 94 and mounted on the shaft ¦
5~¦ externally of the housing 10 is a manually operable crank handle ¦
16l 96.
17jl The shaft 86 is provided with external screw threads 98 ,81~ which operate in internal screw threads 100 in nuts 102 fixed to 19~¦ the spoiler ring 74. Normally lower end portions 104 of each shaft 86 is provided with a snap ring retainer 106 and another 21 snap ring retainer 108. These retainers hold the shaft 86 such 22 that they are not moveable in a direction longitudinally of their 231 axies so that the gears 88 and 90 maintain a constant meshed 24 I relationship, and so that the shafts 86 do not move and therefore 25 ¦ when rotated cause backward or forward or upward or downward 26 ¦ movement of the nuts 102 and the spoiler ring 74 so that each frusto conical portion 76 is moved toward or away from the frusto 29 ¦ conical portion 34 of the ledge or choke ring hereinbefore ibed 301l Thus, each adjusting mechanism 84 is individually 31 ll operable to adjust a peripheral portion of the spoiler ring 74 32 ¦ and this spoiler ring 74 is preferably made of sheet metal and ~"~. ~
~_ . .. .. .. i; . . ._ L
.. . . .. . . . ...
~ I
"' ~0~379 1li is of a deflectable or re~ilient nature such that various 2il adjustments may be made by the various mechanisms 84 so that 3ll uneven flow conditions may be compensated for in several areas 4 where the adjusting mechan~sms 84 are disposed.
5, Due to the fact that th~ tangential inlet 12 is on one 6~! side of the housing lO, some of the mechanisms 84 may be adjusted¦
7, differently than others of the mechanisms 84 and the flexibility ¦
8 or resilient character of the spoiler ring 76 will accomodate a 9~ slight warping or bending thereof so that the slot 78 may vary 10, slightly in accordance with adjustments required to obtain an ~ even flow distribution which may be sensed-by pitot tubes 110 12¦l shown in Fig. 1 of the drawings. These pitot tubes are only an 13,, exa~ple of a means by which the flow may be sensed above or at 14,l the outlet of the vanes 40, as shown in Fig. 1 of the drawings.
5~¦ externally of the housing 10 is a manually operable crank handle ¦
16l 96.
17jl The shaft 86 is provided with external screw threads 98 ,81~ which operate in internal screw threads 100 in nuts 102 fixed to 19~¦ the spoiler ring 74. Normally lower end portions 104 of each shaft 86 is provided with a snap ring retainer 106 and another 21 snap ring retainer 108. These retainers hold the shaft 86 such 22 that they are not moveable in a direction longitudinally of their 231 axies so that the gears 88 and 90 maintain a constant meshed 24 I relationship, and so that the shafts 86 do not move and therefore 25 ¦ when rotated cause backward or forward or upward or downward 26 ¦ movement of the nuts 102 and the spoiler ring 74 so that each frusto conical portion 76 is moved toward or away from the frusto 29 ¦ conical portion 34 of the ledge or choke ring hereinbefore ibed 301l Thus, each adjusting mechanism 84 is individually 31 ll operable to adjust a peripheral portion of the spoiler ring 74 32 ¦ and this spoiler ring 74 is preferably made of sheet metal and ~"~. ~
~_ . .. .. .. i; . . ._ L
.. . . .. . . . ...
~ I
"' ~0~379 1li is of a deflectable or re~ilient nature such that various 2il adjustments may be made by the various mechanisms 84 so that 3ll uneven flow conditions may be compensated for in several areas 4 where the adjusting mechan~sms 84 are disposed.
5, Due to the fact that th~ tangential inlet 12 is on one 6~! side of the housing lO, some of the mechanisms 84 may be adjusted¦
7, differently than others of the mechanisms 84 and the flexibility ¦
8 or resilient character of the spoiler ring 76 will accomodate a 9~ slight warping or bending thereof so that the slot 78 may vary 10, slightly in accordance with adjustments required to obtain an ~ even flow distribution which may be sensed-by pitot tubes 110 12¦l shown in Fig. 1 of the drawings. These pitot tubes are only an 13,, exa~ple of a means by which the flow may be sensed above or at 14,l the outlet of the vanes 40, as shown in Fig. 1 of the drawings.
15,l These sensor tubes llO are open to receive flow moving in direc-
16 ll tions of arrows C in Fig. l of the drawings, and these tubes 110 17jl communicate with conduits 1l2 disposed at the outer side of the 18 1l housing lO and a dial guage 114 may be coupled in connection with 19ll each tu~e 112 to indicate the amount of adjustment to be cranked 20 j~ into each mechanism 84 in accordance with flow sensed by a 21 ll respective one of the flow sensor tubes llO; it being noted that 22 ll the flow sensor tubes llO are disposed in generally a circular 23l. array and generally corresponding in position to the adjustment 24,i mechanisms 84 shown in Fig. 10 of the drawings.
25~!, In accordance with the modification of the invention, l as~shown in Fig. 12, the flow sensor tubes 112 may be coupled to I
27jl a transducer mechanism 116 and motor 118 which will rotate the ~" ~28,~ respective shaft 92 and miter gear 90 in mesh with the respective 29, miter gear 88 and shaft 86 to attain the respective adjustments 30; of a respective portion of the spoiler ring 74. ¦ -31 In operation, enlargement or reduction of the slot 78 32~ by means of the adjusting mechanisms 84 provides for the control ~1 .
- - ~
~ 1~)4~379 1 of a respective amount of centrifugal flow which progresses ll 2 outward in the housing toward the outer ends 42 of the vanes 40. !
3l The geometry of the leading edges of the vanes and the gradient ~l of flow receiving angle, as hereinbefore described, causes uni-5 ll form distribution and flow straightening with a minimum pressure 6l~ drop throughout the entire cross section of the housing in which 7 ll the vanes 40 are disposed and in which the collector electrodes 8, 63 are disposed and between which the discharge electrodes 64 9ll operate. Thus, an even and uniform flow and velocity of fluids 10l, is attained throughout the entire area of the electrostatic precipitator in the area of the aforementioned electrodes from ¦
12 I the smallest diameter electrode adjacent the tube 47 to the 13 I largest diameter electrode nearest the wall of the housing 10.
14 I In the manually operable adjusting mechanism shown in 1511 Fig. 13, the spoiler ring is designated 130 and is manually 16¦! adjustable by a person who may gain access to the interior of the
25~!, In accordance with the modification of the invention, l as~shown in Fig. 12, the flow sensor tubes 112 may be coupled to I
27jl a transducer mechanism 116 and motor 118 which will rotate the ~" ~28,~ respective shaft 92 and miter gear 90 in mesh with the respective 29, miter gear 88 and shaft 86 to attain the respective adjustments 30; of a respective portion of the spoiler ring 74. ¦ -31 In operation, enlargement or reduction of the slot 78 32~ by means of the adjusting mechanisms 84 provides for the control ~1 .
- - ~
~ 1~)4~379 1 of a respective amount of centrifugal flow which progresses ll 2 outward in the housing toward the outer ends 42 of the vanes 40. !
3l The geometry of the leading edges of the vanes and the gradient ~l of flow receiving angle, as hereinbefore described, causes uni-5 ll form distribution and flow straightening with a minimum pressure 6l~ drop throughout the entire cross section of the housing in which 7 ll the vanes 40 are disposed and in which the collector electrodes 8, 63 are disposed and between which the discharge electrodes 64 9ll operate. Thus, an even and uniform flow and velocity of fluids 10l, is attained throughout the entire area of the electrostatic precipitator in the area of the aforementioned electrodes from ¦
12 I the smallest diameter electrode adjacent the tube 47 to the 13 I largest diameter electrode nearest the wall of the housing 10.
14 I In the manually operable adjusting mechanism shown in 1511 Fig. 13, the spoiler ring is designated 130 and is manually 16¦! adjustable by a person who may gain access to the interior of the
17 housing 10 via a door 132, shown in Fig. 9. Each adjustable 18l mechanism comprises a screwthreaded bolt 134 which is screw-19 1I threaded in a nut 136 which is fixed to the ledge structure.
20~ The bolt 134 is freely rotatable in a bearing member 138 fixed 211 to the spoiler ring 130; a snap ring 140 disposed in an external 22~¦ groove in the bolt 134 prevents the bolt ~rom moving axially 23¦¦ in the bearing member 138 and thus the spoiler ring 130 may 24 1¦ be adjusted relative to the frusto conical surface 34 of the 251 ledge structure by applying a wrench to a head portion 142 of 26~l the bolt 134.
27!l It will be obvious to those skilled in the art that 28 ¦I various modifications may be resorted to without departing from 23~l the spirit of the invention-31 1i 1:~ ` 321~ ! -~ 16- 1 , 11'
20~ The bolt 134 is freely rotatable in a bearing member 138 fixed 211 to the spoiler ring 130; a snap ring 140 disposed in an external 22~¦ groove in the bolt 134 prevents the bolt ~rom moving axially 23¦¦ in the bearing member 138 and thus the spoiler ring 130 may 24 1¦ be adjusted relative to the frusto conical surface 34 of the 251 ledge structure by applying a wrench to a head portion 142 of 26~l the bolt 134.
27!l It will be obvious to those skilled in the art that 28 ¦I various modifications may be resorted to without departing from 23~l the spirit of the invention-31 1i 1:~ ` 321~ ! -~ 16- 1 , 11'
Claims (32)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A fluid preconditioner and flow straightening means for electrostatic precipitators comprising: a fluid receiver and preconditioner; a housing having an inlet adapted to receive contaminated pneumatic fluid therein;
said housing having a generally circular cross section and a normally vertical concentric axis; said housing having a generally tangential fluid inlet; said housing an annular inner wall; an annular assembly of flow stra-tening vanes having inner and outer ends; said vanes disposed radially with respect to said axis; said inner ends being nearest to said axis; each of said vanes having lower portions provided with flow receiving edges; said flow receiving edges directed at an angle towards said inlet and angularly disposed relative to said vertical axis; each of said vanes having flow straightening por-tions extending upwardly from said flow receiving edges;
said flow straightening portions being substantially par-allel to said axis.
said housing having a generally circular cross section and a normally vertical concentric axis; said housing having a generally tangential fluid inlet; said housing an annular inner wall; an annular assembly of flow stra-tening vanes having inner and outer ends; said vanes disposed radially with respect to said axis; said inner ends being nearest to said axis; each of said vanes having lower portions provided with flow receiving edges; said flow receiving edges directed at an angle towards said inlet and angularly disposed relative to said vertical axis; each of said vanes having flow straightening por-tions extending upwardly from said flow receiving edges;
said flow straightening portions being substantially par-allel to said axis.
2. The invention as defined in Claim 1, wherein: said flow receiving edges have a gradient of said flow receiv-ing angle which gradually varies from said outer ends of said vanes to said inner ends thereof.
3. The invention as defined in Claim 1, wherein: spray nozzles are disposed in said inlet and projecting from said inner wall of said housing and located to spray and wet pneumatic fluid in said inlet and said housing.
4. The invention as defined in Claim 2, wherein: spray nozzles are disposed in said inlet and projecting from said inner wall and located to spray and wet pneumatic fluid in said inlet and said housing.
5. The invention as defined in Claim 1, wherein: a generally circular in cross section column is concentric with said axis;
said inner end of said vanes adjacent to said column.
said inner end of said vanes adjacent to said column.
6. The invention as defined in Claim 1, wherein: a concentric assembly of circular in cross section electrostatic collector electrodes are disposed above said flow straightening vanes; said collector electrodes concentric with said axis;
said collector electrodes being spaced apart and of successively increasing diameter in a direction radially away from said axis;
said collector electrodes having annular lower edges; and generally annular assemblies of venturi members; each venturi mem-ber being disposed below a respective lower edge of one of said collector electrodes; each venturi member having opposed gener-ally convex surface portions whereby adjacent venturi members below adjacent collector electrodes have adjacent convex portions which cooperate to provide generally converging diverging venturi inlets between adjacent ones of said collector electrodes.
said collector electrodes being spaced apart and of successively increasing diameter in a direction radially away from said axis;
said collector electrodes having annular lower edges; and generally annular assemblies of venturi members; each venturi mem-ber being disposed below a respective lower edge of one of said collector electrodes; each venturi member having opposed gener-ally convex surface portions whereby adjacent venturi members below adjacent collector electrodes have adjacent convex portions which cooperate to provide generally converging diverging venturi inlets between adjacent ones of said collector electrodes.
7. The invention as defined in Claim 1, wherein: an annular ledge structure projects inwardly from said inner wall in a location above said inlet.
8. The invention as defined in Claim 2, wherein: said flow receiving angle being inclined relative to the horizontal and said angle adjacent said circular wall being acute relative to the horizontal, said angle adjacent said central axis being relatively greater than said angle adjacent said circular wall.
9. The invention as defined in Claim 1, wherein: each of said vanes is provided with a cross sectional shape which is curved between said flow receiving edge and said flow straighten-ing portion.
10. The invention as defined in Claim 7, wherein: said housing is provided with a substantially enclosed lower end; said lower end having a liquid outlet therein.
11. The invention as defined in Claim 8, wherein: said housing is provided with a substantially enclosed lower end;
said lower end having a liquid outlet therein.
said lower end having a liquid outlet therein.
12. The invention as defined in Claim 11, wherein: said lower end of said housing is provided with a downwardly converg-ing portion which converges to the proximity of said liquid outlet.
13. The invention as defined in Claim 1, wherein: said flow receiving edges are provided with outer ends which are nearest to said inner wall of said housing; said flow receiving edges at said outer ends having a flow receiving angle which is more nearly disposed at right angles to said axis than the flow receiving angle of said flow receiving edges which are disposed nearer to said axis.
14. The invention as defined in Claim 9, wherein: said cross sectional shape being generally S-shaped.
15. The invention as defined in Claim 1, wherein: said flow receiving edge portions, near said outer ends of said vanes, are relatively closer together than are said straightening portions.
16. The invention as defined in Claim 1, wherein: said annular assembly of flow straightening vanes having a ring shaped structure disposed between inner and outer ends of said vanes;
said ring shaped structure being disposed to support said vanes;
there being a greater number of radially disposed vanes near said housing than near said axis so as to provide for optimum spacing of said vanes near their outer ends and near their inner ends.
said ring shaped structure being disposed to support said vanes;
there being a greater number of radially disposed vanes near said housing than near said axis so as to provide for optimum spacing of said vanes near their outer ends and near their inner ends.
17. A means for converting pneumatic fluid flow from tangential or centrifugal flow to axial flow comprising: a housing; said housing having a circular cross section and being provided with a tangentially disposed pneumatic fluid inlet;
said housing having an axial flow axis concentric with and disposed at substantially right angles to said circular cross section; said housing having a pneumatic fluid outlet; said housing having an annular inner wall; an annular assembly of flow straightening vanes having inner and outer ends; said vanes disposed radially with respect to said axial flow axis; said inner ends being nearest to said axis; each of said vanes having flow receiving edges; said flow receiving edges having a flow receiving angle directed at an angle to a plane disposed at right angles to said axial flow axis; each of said vanes having flow straightening portions which are disposed in substantially parallel relation to said axial flow axis; said flow straightening portions being directed toward said outlet.
said housing having an axial flow axis concentric with and disposed at substantially right angles to said circular cross section; said housing having a pneumatic fluid outlet; said housing having an annular inner wall; an annular assembly of flow straightening vanes having inner and outer ends; said vanes disposed radially with respect to said axial flow axis; said inner ends being nearest to said axis; each of said vanes having flow receiving edges; said flow receiving edges having a flow receiving angle directed at an angle to a plane disposed at right angles to said axial flow axis; each of said vanes having flow straightening portions which are disposed in substantially parallel relation to said axial flow axis; said flow straightening portions being directed toward said outlet.
18. The invention as defined in Claim 17, wherein: an annular ledge is carried by said inner wall of said housing; said ledge projecting rigidly inward toward said axial flow axis; said ledge having an outer annular portion contiguous to said annular inner wall of said housing; said ledge having an inner annular portion of smaller diameter than said annular inner wall of said housing.
19. The invention as defined in Claim 18, wherein: said annular ledge being provided with a first surface directed gener-ally toward said outlet; said ledge having a second surface directed generally toward said inlet; said first surface being generally frusto conical and diverging toward said outlet.
20. The invention as defined in Claim 19, wherein: a generally frusto conical annular ring is provided with a periph-eral portion overlapping said first surface of said ledge; a portion of said frusto conical ring projecting, in a direction toward said inlet, and beyond said ledge; said ring having a central inlet opening of small diameter of said inner annular portion of said ledge; said frusto conical ring being disposed in generally conforming frusto conical relation to said first surface of said ledge; and means adjustably supporting said ring in spaced relation to said first surface of said ledge whereby the dimension of an annular slot between said ring and said first surface may be varied.
21. The invention as defined in Claim 17, wherein: said flow receiving edges having a gradient of said flow receiving angle which gradually varies from said outer ends of said vanes to said inner ends thereof; said flow receiving angle, at said outer ends of said vanes, being acute relative to said flow receiving angle near said inner ends of said vanes.
22. The invention as defined in Claim 21, wherein: an annular ledge is carried by said inner wall of said housing;
said ledge projecting radially inward toward said axial flow axis; said ledge having an outer annular portion contiguous to said annular inner wall of said housing; said ledge having an inner annular portion of smaller diameter than said annular inner wall of said housing.
said ledge projecting radially inward toward said axial flow axis; said ledge having an outer annular portion contiguous to said annular inner wall of said housing; said ledge having an inner annular portion of smaller diameter than said annular inner wall of said housing.
23. The invention as defined in Claim 22, wherein: said annular ledge being provided with a first surface directed generally toward said outlet; said ledge having a second surface directed generally toward said inlet; said first surface being generally frusto conical and diverging toward said oultet.
24. The invention as defined in Claim 23, wherein: a generally frusto conical annular ring is disposed adjacent said ledge; said ring having a peripheral portion overlapping said first surface of said ledge; a portion of said frusto conical ring projecting in a direction toward said inlet beyond said ledge; said ring having a central inlet opening of smaller diameter than said inner annular portion of said ledge; said frusto conical ring being disposed in generally conforming frusto conical relation to said first surface of said ledge; and means adjustably supporting said ring in spaced relation to said first surface of said ledge whereby the dimension of an annular slot between said ring and said first surface may be varied.
25. The invention as defined in Claim 20, wherein: said ring being flexible; a plurality of adjusting devices circum-ferentially spaced about said ring and each device disposed and individually adapted to adjust a portion of said ring relative to said ledge.
26. The invention as defined in Claim 25, wherein: a pneumatic flow sensor is coupled to each of said devices; each pneumatic flow sensor located beyond said flow straightening portions of said vanes in a direction toward said outlet and adapted individually to sense pneumatic flow and provide a respective signal to a respective one of said devices for automatically energizing each of said adjusting devices accord-ing to a predetermined flow condition in the area of a respective sensor.
27. The invention as defined in Claim 26, wherein: a plurality of concentric discharge and collector electrodes are disposed between said flow straightening portions of said vanes and said outlet of said housing.
28. The invention as defined in Claim 27, wherein: converging diverging venturi structures are disposed between said collector electrodes in a position to provide converging diverging inlets for pneumatic fluid passing from said flow straightening portions of said vanes to areas between said collector electrodes.
29. The invention as defined in Claim 8, wherein: each of said vanes is provided with a cross sectional shape which is curved between said flow receiving edge and said flow straighten ing portion.
30. A fluid flow straightening means adapted for converging tangential flow to axial flow comprising: a fluid receiver housing adapted to receive pneumatic fluid therein; said housing having a generally circular cross section and a normally concen-tric axis; said housing having a generally tangential fluid inlet said housing having an annular inner wall; an annular assembly of flow straightening vanes having inner and outer ends; said vanes disposed radially with respect to said axis; and said inner ends of said vanes being nearest to said axis; each of said vanes having flow receiving edges; said flow receiving edges directed at an acute angle toward said inlet and said tangential flow and said flow receiving edges angularly disposed relative to said vertical axis; each of said vanes having flow straightening por-tions extending from said flow receiving edges; said flow straightening portions being substantially parallel to said axis.
31. The invention as defined in Claim 30, wherein: said flow receiving edges having a gradient of said flow receiving angle which gradually varies from said outer ends of said vanes to said inner ends thereof; said flow receiving angle, adjacent said circular wall, being acute relative to the direction of said tangential flow, said angle adjacent said central axis being relatively greater than said angle adjacent said circular wall.
32. A fluid preconditioner and flow straightening means for electrostatic precipitators comprising: a fluid receiver and preconditioner; said housing having an inlet adapted to receive contaminated pneumatic fluid therein; said housing having a generally circular cross section and a normally vertical concen-tric axis; said housing having a generally tangential fluid inlet;
said housing having an annular inner wall; an annular assembly of flow straightening vanes having inner and outer ends; said vanes disposed radially with respect to said axis; and said inner ends being nearest to said axis; each of said vanes having lower portions provided with flow receiving edges; said flow receiving edges directed at an angle toward said inlet and angularly dis-posed relative to said vertical axis; each of said vanes having flow straightening portions extending upwardly from said flow receiving edges; said flow straightening portions being substan- ¦
tially parallel to said axis; said flow receiving edges having a gradient of said flow receiving angle which gradually varies from said outer ends of said vanes to said inner ends thereof;
said flow receiving angle adjacent said circular wall, being acute relative to the direction of said tangential flow, said angle adjacent said central axis being relatively greater than said angle adjacent said circular wall; a concentric assembly of circular in cross section electrostatic collector electrodes are disposed above the flow straightening vanes; said collector electrodes concentric with said axis; said collector electrodes being spaced apart and of successively increasing diameter in a direction radially away from said axis; said collector electrodes having annular lower edges; and generally annular assemblies of venturi members; each venturi member being disposed below a respective lower edge of one of said collector electrodes; each venturi member having opposed generally convex surface portions whereby adjacent venturi members below adjacent collector elec-trodes having adjacent convex portions which cooperate to provide generally converging diverging venturi inlets between adjacent ones of said collector electrodes.
said housing having an annular inner wall; an annular assembly of flow straightening vanes having inner and outer ends; said vanes disposed radially with respect to said axis; and said inner ends being nearest to said axis; each of said vanes having lower portions provided with flow receiving edges; said flow receiving edges directed at an angle toward said inlet and angularly dis-posed relative to said vertical axis; each of said vanes having flow straightening portions extending upwardly from said flow receiving edges; said flow straightening portions being substan- ¦
tially parallel to said axis; said flow receiving edges having a gradient of said flow receiving angle which gradually varies from said outer ends of said vanes to said inner ends thereof;
said flow receiving angle adjacent said circular wall, being acute relative to the direction of said tangential flow, said angle adjacent said central axis being relatively greater than said angle adjacent said circular wall; a concentric assembly of circular in cross section electrostatic collector electrodes are disposed above the flow straightening vanes; said collector electrodes concentric with said axis; said collector electrodes being spaced apart and of successively increasing diameter in a direction radially away from said axis; said collector electrodes having annular lower edges; and generally annular assemblies of venturi members; each venturi member being disposed below a respective lower edge of one of said collector electrodes; each venturi member having opposed generally convex surface portions whereby adjacent venturi members below adjacent collector elec-trodes having adjacent convex portions which cooperate to provide generally converging diverging venturi inlets between adjacent ones of said collector electrodes.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US58822375A | 1975-06-19 | 1975-06-19 | |
| US67046276A | 1976-03-25 | 1976-03-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1046379A true CA1046379A (en) | 1979-01-16 |
Family
ID=27080221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA254,840A Expired CA1046379A (en) | 1975-06-19 | 1976-06-15 | Pneumatic fluid preconditioner and flow straightening means for electrostatic precipitators |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS5929301B2 (en) |
| BR (1) | BR7603934A (en) |
| CA (1) | CA1046379A (en) |
| DE (1) | DE2627306C3 (en) |
| FR (1) | FR2314765A1 (en) |
| GB (1) | GB1526111A (en) |
| NL (1) | NL7606678A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114029164A (en) * | 2021-12-17 | 2022-02-11 | 南京恒瑞环保科技有限公司 | Flue gas conditioning device based on electric dust remover |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3329638A1 (en) * | 1983-08-17 | 1985-03-07 | Gottfried Bischoff Bau kompl. Gasreinigungs- und Wasserrückkühlanlagen GmbH & Co KG, 4300 Essen | DEVICE FOR THE DEDUSTING OF INDUSTRIAL GASES |
| CN104815758B (en) * | 2015-05-15 | 2016-10-05 | 中国科学院过程工程研究所 | A kind of drum type brake half wet process electrostatic precipitator |
| CN108531225B (en) * | 2018-05-09 | 2021-06-04 | 广州华科环保工程有限公司 | Deep desulfurization and oil removal device and process for self-made water gas in ceramic industry |
| CN112547323A (en) * | 2019-09-10 | 2021-03-26 | 康孚(天津)净化空调有限公司 | Array type charged spraying axial flow cyclone filter cartridge |
| CN110586324B (en) * | 2019-10-21 | 2024-02-23 | 无锡市易聚环保科技发展有限公司 | Electrostatic dust collector |
| CN112844844B (en) * | 2021-01-18 | 2022-11-18 | 江苏万瑞达生物科技股份有限公司 | Firm formula multivitamin feed production of contact is with pressing down dirt machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3315444A (en) * | 1964-05-01 | 1967-04-25 | Electronatom Corp | Integrated mechanical filter and electrostatic precipitator system for broad spectrum purification |
| DE1457097A1 (en) * | 1965-08-14 | 1969-02-20 | Metallgesellschaft Ag | Electrostatic dust separator for cleaning hot, dusty gases |
-
1976
- 1976-06-14 GB GB2454776A patent/GB1526111A/en not_active Expired
- 1976-06-15 CA CA254,840A patent/CA1046379A/en not_active Expired
- 1976-06-16 FR FR7618288A patent/FR2314765A1/en not_active Withdrawn
- 1976-06-18 BR BR7603934A patent/BR7603934A/en unknown
- 1976-06-18 DE DE19762627306 patent/DE2627306C3/en not_active Expired
- 1976-06-18 JP JP51072097A patent/JPS5929301B2/en not_active Expired
- 1976-06-18 NL NL7606678A patent/NL7606678A/en not_active Application Discontinuation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114029164A (en) * | 2021-12-17 | 2022-02-11 | 南京恒瑞环保科技有限公司 | Flue gas conditioning device based on electric dust remover |
| CN114029164B (en) * | 2021-12-17 | 2022-06-10 | 南京恒瑞环保科技有限公司 | Flue gas conditioning device based on electric dust remover |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2627306A1 (en) | 1976-12-30 |
| NL7606678A (en) | 1976-12-21 |
| JPS5929301B2 (en) | 1984-07-19 |
| JPS521773A (en) | 1977-01-07 |
| FR2314765A1 (en) | 1977-01-14 |
| GB1526111A (en) | 1978-09-27 |
| DE2627306C3 (en) | 1981-07-30 |
| DE2627306B2 (en) | 1980-11-13 |
| BR7603934A (en) | 1977-04-05 |
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