CA1114749A - Apparatus for the treatment of liquids and method for cleaning a layer of fibres in such an apparatus - Google Patents
Apparatus for the treatment of liquids and method for cleaning a layer of fibres in such an apparatusInfo
- Publication number
- CA1114749A CA1114749A CA322,872A CA322872A CA1114749A CA 1114749 A CA1114749 A CA 1114749A CA 322872 A CA322872 A CA 322872A CA 1114749 A CA1114749 A CA 1114749A
- Authority
- CA
- Canada
- Prior art keywords
- fibres
- walls
- liquid
- layer
- cleaning
- 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
- 239000007788 liquid Substances 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000004140 cleaning Methods 0.000 title abstract description 16
- 239000000356 contaminant Substances 0.000 claims abstract description 12
- 239000000835 fiber Substances 0.000 claims description 10
- 239000004743 Polypropylene Substances 0.000 claims description 3
- -1 polypropylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000000203 mixture Substances 0.000 description 16
- 239000007791 liquid phase Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004581 coalescence Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/04—Breaking emulsions
- B01D17/045—Breaking emulsions with coalescers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/10—Brush filters ; Rotary brush filters
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Treatment Of Fiber Materials (AREA)
- Filtering Materials (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
ABSTRACT
APPARATUS FOR THE TREATMENT OF LIQUIDS AND METHOD FOR CLEANING A
LAYER OF FIBRES IN SUCH AN APPARATUS
An apparatus for the treatment of liquids, comprising a liquid supply, a layer of fibres held under pressure by walls provided with openings, and a liquid discharge, wherein at least two of said walls are displaceable relative to each other.
Ends of the fibres are so secured to a displaceable wall that the fibres can stretch themselves when the walls are displaced away from each other.
Moreover the invention relates to a method for cleaning the layer of fibres of said apparatus. This method comprises displacing the displaceable walls away from each other; causing a liquid to flow along the fibres in such a way that contaminants present on or between the fibres are entrained by the liquid and returning the displaceable walls to the original position.
APPARATUS FOR THE TREATMENT OF LIQUIDS AND METHOD FOR CLEANING A
LAYER OF FIBRES IN SUCH AN APPARATUS
An apparatus for the treatment of liquids, comprising a liquid supply, a layer of fibres held under pressure by walls provided with openings, and a liquid discharge, wherein at least two of said walls are displaceable relative to each other.
Ends of the fibres are so secured to a displaceable wall that the fibres can stretch themselves when the walls are displaced away from each other.
Moreover the invention relates to a method for cleaning the layer of fibres of said apparatus. This method comprises displacing the displaceable walls away from each other; causing a liquid to flow along the fibres in such a way that contaminants present on or between the fibres are entrained by the liquid and returning the displaceable walls to the original position.
Description
APPARATUS FOR THE TREATMENT OF LIQUIDS AND METHOD FOR CLEANING A
LAYER OF FIBRES IN SUCH AN APPARATUS
The invention relates to an apparatus for the treatment of liquids by means of a layer of fibres, in particular for coales-cing liquid particles, dispersed in a continuous liquid phase, by means of a layer of fibres. The invention also relates to a method for cleaning a layer of fibres in such an apparatus.
In the industry use is frequently made of an apparatus for coalescing liquid droplets by means of a layer of fibres and also of an apparatus for the filtration of sdid particles from a liquid by means of a layer of fibres.
Inter alia from Applicant's British patent specification No. 1,082,810, published 13th September, 1967, coalescers are known which comprise a liquid supply, a layer of fibres held under pressure by walls provided with openings and a liquid discharge, wherein the liquid to be treated can be passed through the layer of fibres.
A disadvantage of the known layers of fibres is that during - the treatment of the liquid the openings between -the fibres gradually become smaller, because solid contaminants present in the liquid remain in the openings between the fibres.
This implies that the layers of fibres gradually become clogged in the course of time and the effectiveness of the layers of fibres decreases, as a result of which the layers of fibres must frequently be replaced, which involves loss of time and extra cost.
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-The object of the invention is to provide an apparatus and a method which enables the layers of fibres to be cleaned in a simple manner, so that replacement of the layers of fibres is no longer necessary.
According to the invention, there is provided an apparatus for treating liquids including a housing having an interior divided into three spaces by a pair of perforated walls, the space between the walls containing fibres secured to at least one of the walls, the walls being arranged to be displaceable relative to each other from a position wherein the fibres are held under pressure between the walls to a position wherein the fibres can stretch themselves, and conduits communicating with the spaces located at opposite sides of the pair of walls.
According to another aspect of the invention, there is provided a method of treating a liquid by means of the apparatus stated in the preceding paragraph including the steps of passing a contaminant-containing liquid via the conduits through the perforated walls and the fibres arranged therebetween -~ -under pressure, displacing the walls away from each other and causing a second liquid to flow via the perforated walls and along the fibres such that -contaminants present on or between the fibres are entrained by the second liquid, and returning the walls to their original position and continuing the passage of the contaminant-containing liquid.
The invention will now be illustrated further with reference to an embodiment shown in the drawings, in which:
Figure 1 shows a longitudinal cross-section of a coalescer according to the invention;
Figure 2 shows on an enlarged scale detail II of Figure l;
Figure 3 shows on an enlarged scale detail II of Figure 1 during the cleaning of the fibres.
` 2 , . . .
The coalescer according to Figure 1 comprises a housing 1 provided with a layer of fibres 2, which layer is held under pressure by means of walls 3 and 4, each provided with openings, for example walls consisting of per-forated plates, of sieve plates or of a fabric made of metal threads or plastic threads. The layer of fibres 2 consists of, for example, polypropylene fibres, an end of each fibre being secured to the wall 3. To this end the fibres may be secured directly to the wall 3, while it is also possible to secure the ends first to a suitable network (not shown), which network is secured to the wall 3. The apparatus further comprises a liquid supply 5 with :
a valve 6 and two liquid discharges 7 and 8 with valves 9 and 10 2a .
,. . . - . . ~ , , .- : : . -.
. : : - . , :
.
- - . , .. . : : :: : -- . ~ . :
~: :
respectively. The layer of fibres 2 is secured in a leak-proof manner to the wall of the housing 1.
The liquid supply 5 is connected, for example, to a tank (not shown) in which the liquid mixture to be treated can be stored. The liquid discharge 7 is connected to a separator (not shown). The liquid discharge 8 is connected, for example, to a tank (not shown), in which the liquid with the contaminants from the layer of fibres can be stored.
The operation of the coalescer is as follows:
Through the liquid supply 5 a liquid mixture, consisting of a continuous liquid phase in which liquid droplets are dis-persed, is passed through the wall 3 and subsequently through the layer of fibres 2.
As the liquid mixture flows through the layer of fibres 2, the liquid droplets coalesce to form larger drops which can be readily separated from the continuous liquid phase in a separator (not shown), known per se.
The speed at which the liquid mixture must be passed through the layer of fibres 2 is dependent on the nature of the liquid mixture to be treated. As is known, it is desirable to apply a fibre diameter dependent on the average diameter of the liquid droplets flowing into the layer of fibres.
The thickness of the layer of fibres 2 may vary widely.
The liquid mixture is preferably passed through the layer of fibres 2 in a vertical direction, for which purpose the housing 1 is positioned in such a way that the longitudinal axis of the housing is vertical. If the specific gravity of the liquid droplets to be coalesced is lower than that of the continuous liguid phase, the liquid mixture is passed upwardly through the layer of fibres 2, as shown in Figure 1. The liquid mixture is passed downwardly through the layer of fibres 2 if the specific gravity of the liquid droplets to be coalesced is higher than that of the continuous liquid phase.
After the liquid mixture has left the layer of fibres 2 ; 35 and has passed through the wall ~, the liquid mixture is passed .
- . ~' ',: '' ,~ ~ ,',, . :
., ~ , . . .
: . .' ' ' . : ' '~ . .
to said separator through the liquid discharge 7, in which the larger liquid droplets formed by coalescence are separated from the continuous liquid phase.
After liquid has been passed through the layer of fibres 2 for some time, the pressure drop across the layer of fibres 2 increases and the effectiveness of the layer decreases, because mainly solid contaminants present in the liquid mixture reduce the free spaces between the fibres, with the result that the coalescing effect of the layer of fibres 2 decreases. When the coalescing effect of the layer of fibres 2 has fallen to a certain value the layer of fibres 2 must be cleaned in order to restore the effectiveness of the apparatus. Before proceeding to clean the layer of fibres 2 the liquid discharge 7 is closed by means of valve 9 and the liquid discharge 8 is opened by means of valve 10.
The method for cleaning the layer of fibres 2 is as follows:
The wall 4 is displaced upwardly owing to which the distance between the walls 3 and 4 become greater. The wall 4 is prefer-ably displaced over a distance at least equal to the length of the longest fibre in the layer of fibres 2, see Figure 3.
Subsequently, a liquid is passed along the fibres 14 via the wall 3. The velocity of the liquid stream is now chosen in such a way that the fibres 14 stretch themselves, see Figure 3. Solid contaminants present on or between the fibres 14 are then readily entrained by the liquid stream and removed through the liquid discharge 8.
The cleaning liquid used can be the same liquid mixture as is treated by the coalescer during normal operation. If this liquid mixture is used as cleaning liquid, this mixture may, after cleaning the fibres 14, optionally be returned through the liquid ; discharge 8 to the storage tank (not shown) for the liquid mixture to be coalesced.
If the cleaning liquid used is another liquid than the liquid mixture to be coalesced, which is frequently preferred, the apparatus must be provlded with a separate liquid supply 11 .
' ~, , . : - . : - - - . . : ~ . , . : :
: . - ................................ . . : .
with a valve 12. During the normal operation of the coalescer the supply 11 is closed. When the fibres 14 must be cleaned, the liquid supply 5 is closed by means of valve 6 and the liquid supply 11 is opened, enabling the cleaning liquid to be supplied.
The apparatus shown in Figure 1 is provided with one layer of fibres 2. It is also possible to provide the apparatus with several layers of fibres arranged in series. In that case each layer of fibres is clamped between two appertaining walls provided with openings. When in such a case the layers of fibres must be cleaned, the distance between each pair of walls is enlarged, preferably to at least the length of the longest fibre in the relevant layer of fibres.
The hereinbefore described method for cleaning a layer of fibres can also be used in a filtration apparatus for separating solid particles of a certain size from a liquid by means of the layer of fibres. The particles which are retained will gradually clog the layer of fibres, as a result of which the good filtra-tion effect of the layer of fibres decreases Moreover, the invention is not limited to the use of flat walls provided with openings. It is, for example, also possible to use non-flat walls between which the layer of fibres is - clamped, for example, corrugated or cylindrical walls. Further, the said walls may also consist of a network or fabric of threads.
Although in the embodiment described the walls between which - the fibres are clamped are continuously held parallel to each other, both during normal operation and during cleaning of the fibres, this is not strictly necessary.
For the purpose of cleaning, the walls must be displaceably arranged in the housing in such a manner that the fibres of the layer of fibres can stretch themselves. To this end one of the two walls can, for example, be so hingeably arranged that it can be turned away before cleaning.
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.
, .
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: ' ' .- .
- . : .
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Instead of threads or fibres of polypropylene, the layer of fibres can also be made of threads or fibres of another suitable material, for example glass.
In the embodiment shown, one end of each fibre 14 is secured to the wall 3. Instead, it is possible to secure both ends of each fibre to the wall 3. Another possibility is to secure one end Or each fibre 14 to the wall 3 and the other end of each fibre 14 to the wall 40 In the last mentioned case the walls 3 and 4 should not be displaceable away from each other over a distance larger than the length of the shortest fibre.
- :
. , -- . . : . . - .: . ~ ~ -,, .: ~, -,, ''.'' :, ': :
. . : . . ., . .: .: : . .. : : : :
:. . : , -- ~ :
., :, : . ., .: . . , : . : .:
.. . . :: . .. : : ... -: , .. : : ~ : -: . - . . .
LAYER OF FIBRES IN SUCH AN APPARATUS
The invention relates to an apparatus for the treatment of liquids by means of a layer of fibres, in particular for coales-cing liquid particles, dispersed in a continuous liquid phase, by means of a layer of fibres. The invention also relates to a method for cleaning a layer of fibres in such an apparatus.
In the industry use is frequently made of an apparatus for coalescing liquid droplets by means of a layer of fibres and also of an apparatus for the filtration of sdid particles from a liquid by means of a layer of fibres.
Inter alia from Applicant's British patent specification No. 1,082,810, published 13th September, 1967, coalescers are known which comprise a liquid supply, a layer of fibres held under pressure by walls provided with openings and a liquid discharge, wherein the liquid to be treated can be passed through the layer of fibres.
A disadvantage of the known layers of fibres is that during - the treatment of the liquid the openings between -the fibres gradually become smaller, because solid contaminants present in the liquid remain in the openings between the fibres.
This implies that the layers of fibres gradually become clogged in the course of time and the effectiveness of the layers of fibres decreases, as a result of which the layers of fibres must frequently be replaced, which involves loss of time and extra cost.
~k '-..
:. .: .
'' ,, ~ ' ' ''. ' ~- : ' : ' - . ' ' .'' .. ' ~ . ., . :
- , : ~' , ~ , ' .:
, ......... ~ :
-The object of the invention is to provide an apparatus and a method which enables the layers of fibres to be cleaned in a simple manner, so that replacement of the layers of fibres is no longer necessary.
According to the invention, there is provided an apparatus for treating liquids including a housing having an interior divided into three spaces by a pair of perforated walls, the space between the walls containing fibres secured to at least one of the walls, the walls being arranged to be displaceable relative to each other from a position wherein the fibres are held under pressure between the walls to a position wherein the fibres can stretch themselves, and conduits communicating with the spaces located at opposite sides of the pair of walls.
According to another aspect of the invention, there is provided a method of treating a liquid by means of the apparatus stated in the preceding paragraph including the steps of passing a contaminant-containing liquid via the conduits through the perforated walls and the fibres arranged therebetween -~ -under pressure, displacing the walls away from each other and causing a second liquid to flow via the perforated walls and along the fibres such that -contaminants present on or between the fibres are entrained by the second liquid, and returning the walls to their original position and continuing the passage of the contaminant-containing liquid.
The invention will now be illustrated further with reference to an embodiment shown in the drawings, in which:
Figure 1 shows a longitudinal cross-section of a coalescer according to the invention;
Figure 2 shows on an enlarged scale detail II of Figure l;
Figure 3 shows on an enlarged scale detail II of Figure 1 during the cleaning of the fibres.
` 2 , . . .
The coalescer according to Figure 1 comprises a housing 1 provided with a layer of fibres 2, which layer is held under pressure by means of walls 3 and 4, each provided with openings, for example walls consisting of per-forated plates, of sieve plates or of a fabric made of metal threads or plastic threads. The layer of fibres 2 consists of, for example, polypropylene fibres, an end of each fibre being secured to the wall 3. To this end the fibres may be secured directly to the wall 3, while it is also possible to secure the ends first to a suitable network (not shown), which network is secured to the wall 3. The apparatus further comprises a liquid supply 5 with :
a valve 6 and two liquid discharges 7 and 8 with valves 9 and 10 2a .
,. . . - . . ~ , , .- : : . -.
. : : - . , :
.
- - . , .. . : : :: : -- . ~ . :
~: :
respectively. The layer of fibres 2 is secured in a leak-proof manner to the wall of the housing 1.
The liquid supply 5 is connected, for example, to a tank (not shown) in which the liquid mixture to be treated can be stored. The liquid discharge 7 is connected to a separator (not shown). The liquid discharge 8 is connected, for example, to a tank (not shown), in which the liquid with the contaminants from the layer of fibres can be stored.
The operation of the coalescer is as follows:
Through the liquid supply 5 a liquid mixture, consisting of a continuous liquid phase in which liquid droplets are dis-persed, is passed through the wall 3 and subsequently through the layer of fibres 2.
As the liquid mixture flows through the layer of fibres 2, the liquid droplets coalesce to form larger drops which can be readily separated from the continuous liquid phase in a separator (not shown), known per se.
The speed at which the liquid mixture must be passed through the layer of fibres 2 is dependent on the nature of the liquid mixture to be treated. As is known, it is desirable to apply a fibre diameter dependent on the average diameter of the liquid droplets flowing into the layer of fibres.
The thickness of the layer of fibres 2 may vary widely.
The liquid mixture is preferably passed through the layer of fibres 2 in a vertical direction, for which purpose the housing 1 is positioned in such a way that the longitudinal axis of the housing is vertical. If the specific gravity of the liquid droplets to be coalesced is lower than that of the continuous liguid phase, the liquid mixture is passed upwardly through the layer of fibres 2, as shown in Figure 1. The liquid mixture is passed downwardly through the layer of fibres 2 if the specific gravity of the liquid droplets to be coalesced is higher than that of the continuous liquid phase.
After the liquid mixture has left the layer of fibres 2 ; 35 and has passed through the wall ~, the liquid mixture is passed .
- . ~' ',: '' ,~ ~ ,',, . :
., ~ , . . .
: . .' ' ' . : ' '~ . .
to said separator through the liquid discharge 7, in which the larger liquid droplets formed by coalescence are separated from the continuous liquid phase.
After liquid has been passed through the layer of fibres 2 for some time, the pressure drop across the layer of fibres 2 increases and the effectiveness of the layer decreases, because mainly solid contaminants present in the liquid mixture reduce the free spaces between the fibres, with the result that the coalescing effect of the layer of fibres 2 decreases. When the coalescing effect of the layer of fibres 2 has fallen to a certain value the layer of fibres 2 must be cleaned in order to restore the effectiveness of the apparatus. Before proceeding to clean the layer of fibres 2 the liquid discharge 7 is closed by means of valve 9 and the liquid discharge 8 is opened by means of valve 10.
The method for cleaning the layer of fibres 2 is as follows:
The wall 4 is displaced upwardly owing to which the distance between the walls 3 and 4 become greater. The wall 4 is prefer-ably displaced over a distance at least equal to the length of the longest fibre in the layer of fibres 2, see Figure 3.
Subsequently, a liquid is passed along the fibres 14 via the wall 3. The velocity of the liquid stream is now chosen in such a way that the fibres 14 stretch themselves, see Figure 3. Solid contaminants present on or between the fibres 14 are then readily entrained by the liquid stream and removed through the liquid discharge 8.
The cleaning liquid used can be the same liquid mixture as is treated by the coalescer during normal operation. If this liquid mixture is used as cleaning liquid, this mixture may, after cleaning the fibres 14, optionally be returned through the liquid ; discharge 8 to the storage tank (not shown) for the liquid mixture to be coalesced.
If the cleaning liquid used is another liquid than the liquid mixture to be coalesced, which is frequently preferred, the apparatus must be provlded with a separate liquid supply 11 .
' ~, , . : - . : - - - . . : ~ . , . : :
: . - ................................ . . : .
with a valve 12. During the normal operation of the coalescer the supply 11 is closed. When the fibres 14 must be cleaned, the liquid supply 5 is closed by means of valve 6 and the liquid supply 11 is opened, enabling the cleaning liquid to be supplied.
The apparatus shown in Figure 1 is provided with one layer of fibres 2. It is also possible to provide the apparatus with several layers of fibres arranged in series. In that case each layer of fibres is clamped between two appertaining walls provided with openings. When in such a case the layers of fibres must be cleaned, the distance between each pair of walls is enlarged, preferably to at least the length of the longest fibre in the relevant layer of fibres.
The hereinbefore described method for cleaning a layer of fibres can also be used in a filtration apparatus for separating solid particles of a certain size from a liquid by means of the layer of fibres. The particles which are retained will gradually clog the layer of fibres, as a result of which the good filtra-tion effect of the layer of fibres decreases Moreover, the invention is not limited to the use of flat walls provided with openings. It is, for example, also possible to use non-flat walls between which the layer of fibres is - clamped, for example, corrugated or cylindrical walls. Further, the said walls may also consist of a network or fabric of threads.
Although in the embodiment described the walls between which - the fibres are clamped are continuously held parallel to each other, both during normal operation and during cleaning of the fibres, this is not strictly necessary.
For the purpose of cleaning, the walls must be displaceably arranged in the housing in such a manner that the fibres of the layer of fibres can stretch themselves. To this end one of the two walls can, for example, be so hingeably arranged that it can be turned away before cleaning.
. ~.
~.
,, .: ~ - , - ~, : , :
.
, .
- , , , :, .
: ' ' .- .
- . : .
1~4~
Instead of threads or fibres of polypropylene, the layer of fibres can also be made of threads or fibres of another suitable material, for example glass.
In the embodiment shown, one end of each fibre 14 is secured to the wall 3. Instead, it is possible to secure both ends of each fibre to the wall 3. Another possibility is to secure one end Or each fibre 14 to the wall 3 and the other end of each fibre 14 to the wall 40 In the last mentioned case the walls 3 and 4 should not be displaceable away from each other over a distance larger than the length of the shortest fibre.
- :
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. . : . . ., . .: .: : . .. : : : :
:. . : , -- ~ :
., :, : . ., .: . . , : . : .:
.. . . :: . .. : : ... -: , .. : : ~ : -: . - . . .
Claims (6)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. Apparatus for treating liquids including a housing having an interior divided into three spaces by a pair of perforated walls, the space between the walls containing fibres secured to at least one of the walls, the walls being arranged to be displaceable relative to each other from a position wherein the fibres are held under pressure between the walls to a position wherein the fibres can stretch themselves, and conduits communicating with the spaces located at opposite sides of the pair of walls.
2. Apparatus of claim 1, wherein the fibres consist of polypropylene.
3. Apparatus according to claim 1 or 2, wherein the walls are parallel in both positions.
4. A method of treating a liquid by means of the apparatus of claim 1, including the steps of passing a contaminant-containing liquid via the conduits through the perforated walls and the fibres arranged therebetween under pressure, displacing the walls away from each other and causing a second liquid to flow via the perforated walls and along the fibres such that contaminants present on or between the fibres are entrained by the second liquid, and returning the walls to their original position and continuing the passage of the contaminant-containing liquid.
5. Method of claim 4, wherein the second liquid is formed by the contaminant-containing liquid.
6. Method of claim 4 or 5, wherein the walls are displaced over a distance at least equal to the length of the longest fibre.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7804042 | 1978-04-17 | ||
| NL7804042A NL7804042A (en) | 1978-04-17 | 1978-04-17 | DEVICE AND METHOD FOR CLEANING A FIBER LAYER. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1114749A true CA1114749A (en) | 1981-12-22 |
Family
ID=19830669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA322,872A Expired CA1114749A (en) | 1978-04-17 | 1979-03-05 | Apparatus for the treatment of liquids and method for cleaning a layer of fibres in such an apparatus |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS54137773A (en) |
| CA (1) | CA1114749A (en) |
| DE (1) | DE2914816A1 (en) |
| FR (1) | FR2423249A1 (en) |
| GB (1) | GB2018610B (en) |
| NL (1) | NL7804042A (en) |
| NO (1) | NO791239L (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2481140A1 (en) * | 1980-04-25 | 1981-10-30 | Sofrance Sa | DEVICE FOR CAUSING THE COALESCENCE OF A LIQUID PHASE DISPERSED IN A LIQUID OR GAS |
| GB2135207B (en) * | 1983-02-17 | 1986-02-05 | Shell Int Research | Process and apparatus for the removal of oil from an oil-in-water dispersion |
| GB8417783D0 (en) * | 1984-07-12 | 1984-08-15 | Shell Int Research | Treating liquids |
| GB2198365A (en) * | 1986-08-04 | 1988-06-15 | Howden James & Co Ltd | Filter |
| CA2104437C (en) * | 1992-08-27 | 1999-05-25 | Renzo Alberto Gasparini Noziglia | Method for purifying aqueous phases in hydrometallurigical extractions |
| US5922205A (en) * | 1997-12-16 | 1999-07-13 | Patterson; James A. | Suppression of the formation of colloidal suspensions between tanked fuel oil and sea water |
| KR100405152B1 (en) * | 2001-06-07 | 2003-11-14 | 은석규 | Variable Pore Micro Filter Having Simple and Compact Structure Capable of Side Stream Filtration and Cross Flow Filtration |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE246428C (en) * | ||||
| US1833315A (en) * | 1923-12-21 | 1931-11-24 | Harry H Burhans | Filtering medium |
| DE832596C (en) * | 1950-10-21 | 1952-02-25 | Metallgesellschaft Ag | Device for the treatment of liquids with coarse filter materials |
| FR1083869A (en) * | 1952-08-20 | 1955-01-13 | Faudi Feinbau | Liquid filter, usable in particular for removing water from fuels |
| FR1405867A (en) * | 1964-04-04 | 1965-07-16 | Filtering and sieving plant | |
| US3500011A (en) * | 1967-07-11 | 1970-03-10 | Whirlpool Co | Filter apparatus |
| DE1905536A1 (en) * | 1969-02-05 | 1970-09-03 | Gerhard Adler | Oil-water separation with elastic screen - forming material |
| US3689407A (en) * | 1971-02-16 | 1972-09-05 | Oil Mop International Inc | Oil and water separating device |
| FR2255935A1 (en) * | 1973-12-27 | 1975-07-25 | Huardeau Jacques | Clarifier with floating filtering material - for rapid combined settlement and filtration of polluted liqs. |
| SE7710010L (en) * | 1976-10-11 | 1978-04-12 | Mueller Hans | PROCEDURE AND DEVICE FOR FILTERING HYDROGEN AND GASES AND USING THE PROCEDURE RESP DEVICE |
-
1978
- 1978-04-17 NL NL7804042A patent/NL7804042A/en not_active Application Discontinuation
-
1979
- 1979-03-05 CA CA322,872A patent/CA1114749A/en not_active Expired
- 1979-04-11 GB GB7912759A patent/GB2018610B/en not_active Expired
- 1979-04-11 JP JP4312579A patent/JPS54137773A/en active Pending
- 1979-04-11 DE DE19792914816 patent/DE2914816A1/en not_active Withdrawn
- 1979-04-11 NO NO791239A patent/NO791239L/en unknown
- 1979-04-11 FR FR7909171A patent/FR2423249A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| NL7804042A (en) | 1979-10-19 |
| FR2423249B1 (en) | 1983-11-04 |
| NO791239L (en) | 1979-10-18 |
| GB2018610B (en) | 1982-07-07 |
| FR2423249A1 (en) | 1979-11-16 |
| JPS54137773A (en) | 1979-10-25 |
| DE2914816A1 (en) | 1979-10-18 |
| GB2018610A (en) | 1979-10-24 |
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