CA1132057A - Apparatus for carrying out the separation of two liquids and the recovery of one of them - Google Patents
Apparatus for carrying out the separation of two liquids and the recovery of one of themInfo
- Publication number
- CA1132057A CA1132057A CA344,935A CA344935A CA1132057A CA 1132057 A CA1132057 A CA 1132057A CA 344935 A CA344935 A CA 344935A CA 1132057 A CA1132057 A CA 1132057A
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- CA
- Canada
- Prior art keywords
- liquids
- elements
- liquid
- recovery
- constituted
- 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
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Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/204—Keeping clear the surface of open water from oil spills
Landscapes
- Removal Of Floating Material (AREA)
Abstract
ABSTRACT
APPARATUS FOR CARRYING OUT TEE SEPARATION OF TWO
LIQUIDS AND THE RECOVERY OF ONE OF THEM.
The present invention relates to an apparatus for the separation of liquids and the recovery of one of these liquids, and in particular for the recovery of oils spreading over stretches of water, of the type wherein part of the surface of at least an element such as a disc, driven with a rotative movement, is brought into contact with the liquid mixture, said element being made of a material showing a physical affinity for the liquid to be recovered, and wherein the said liquid carried on the surface of the said element is thereafter re-covered by wiping, in which apparatus the said element is constituted by one or more unitary elements, one face of which at least is truncated cone-shaped, the said unitary elements being driven in rotation about an axis traversing the fictitious apex of the said truncated cones.
APPARATUS FOR CARRYING OUT TEE SEPARATION OF TWO
LIQUIDS AND THE RECOVERY OF ONE OF THEM.
The present invention relates to an apparatus for the separation of liquids and the recovery of one of these liquids, and in particular for the recovery of oils spreading over stretches of water, of the type wherein part of the surface of at least an element such as a disc, driven with a rotative movement, is brought into contact with the liquid mixture, said element being made of a material showing a physical affinity for the liquid to be recovered, and wherein the said liquid carried on the surface of the said element is thereafter re-covered by wiping, in which apparatus the said element is constituted by one or more unitary elements, one face of which at least is truncated cone-shaped, the said unitary elements being driven in rotation about an axis traversing the fictitious apex of the said truncated cones.
Description
~1 3~157 I
Al:'PAl~ATUS l~OI~ CA12RY:CNG ou~r TIIE Sl~r'~RA'r.LON OF Tl~O
LIQUIDS AND '~ RECO'VERY OF ON~ OF T~ M~
The present inventioll rela1,es to an apparat-us for separa-ting two li.quids and recoveritlg one of - 5 them.
A method has already been clescribed, and in ; particular in French Patents Nos. 2 203 400 and
Al:'PAl~ATUS l~OI~ CA12RY:CNG ou~r TIIE Sl~r'~RA'r.LON OF Tl~O
LIQUIDS AND '~ RECO'VERY OF ON~ OF T~ M~
The present inventioll rela1,es to an apparat-us for separa-ting two li.quids and recoveritlg one of - 5 them.
A method has already been clescribed, and in ; particular in French Patents Nos. 2 203 400 and
2 203 ~lOl, for recovering a liquid, sucl1 as a mineral oil, spread over the surface of` ano-ther liquid, such as water for example; the said French patellts a].so describe an apparatus for carrying ou-t the said method, whic]1 ap~aratus comprises a con-tinuous movable element, absorbent of t;he liquid to be recovered, -the lowest part of whicl1 element is dipped into the mass of liquid -to be -treated, whereas the emerging part rubs against a wiping member benea-th which is situated a channel for the recovery of the liquid carried up by the said movable element and draining from the wiping member.
It is specified in -the said French patents that the movable element is constituted by at least a revolving surface belonging to one or more parts carried by a ro-tary horizontal sl1af't ancl driven by - . said shaft. In fact, what is describe(:l in the - 25 said patents as a movable elemen-t, is either a belt, or a series of circular discs, 01' a cylinder; although each produc-tion of movable element has itSol~
advantages and disadvantag~es, it wo~ld seelll that -the plarle circular discs were the best embodin1ent of the invention.
There has now been found an llnexpected : phenomenon which is that, when in -the kno~
: apparatus for separa-ting and recovering liquids, such as for example the method described in French Patents 2 203 400 and 2 203 IIOl, movable elements q~
' ' ':
. ' ' 1~3~:)5~
collsti-tutecl of two -truncated cones joined together by tlleir :largest base, al-e ~Ised in preference to plane circular discs, it is possibl.e to recover larger quantities of liquid, all other things being equal.
This di.scovery is asto:nishing owills to the fact that wllen the phenomena at stak.e were analyzed logically, it could be admitted that,the quantity : of liquid carried and recovered was solely dependent on the surface area of the movable element which, righl; -through the experinlen-t, was in contact with the liquid -to be ex-tracted; tlle preced:in~ remark is applicable, a:l.l other thirlgs being equal, and in - particular with the same types of liquids to be separated and ~ith the same material constituting the surface of the movable element(s).
In the liquid separation and recovery apparatus accord.ing to the invention, the movable extraction element will be constituted by a series of elements one face of which at 'least is truncated cone~shaped. Preferably, said elements are constituted by two truncated cones ~joined along their largest base.
By truncated cone is meant any conical revolving surface, the angle at the top of WhiCIl is less than loOO Truncatcd cones arc defincd in thcir largest portion by two plane bases joined alongside, and in their narrowest portion by surface.4 parallel to the bases, when the movable element is mounted on the rot.ation axis, in perpendicular to said axisO It was unexpectedly found that, all other things being equal (arld in particular the material and surface area of the movable element), the separation yield ~i.e. i.n effect the quantity of oil extracted) was greater with tr~mcated e].e~lents than with other linown elements such as ~3~2~5~
! discs or cylinders. The improvemen~ of this yield becomes obvious with respect to the disc as soon as the angle at -the top of the conical surface reaches abollt 160 -to 170 and with respect to the cy:linder as soon as -the said angle reaches about 10. It would seem that the optimtlm is reached with angles of tle order of 90. ln effect the said optimum i.s dependent on the proper-ties of the li~uids to be separated; for example in the most frequent cases where an oil spread over a water surface has to be separated it is noted -that the more viscous the oil the more advantageous it is to use truncated surfaces the angle at the top of which is small.
It was also found advantageous in order to increase the yield of the apparatus in many applications to use movable elements the outer surface of which is provided with grooves.
By grooves are meant here any scratches or lines with a certain length and a certain depth with respect to the overall surface Or the movable element.
Suitable groo~es used in the appa.ratus accord.ing to the invention will be prefe.rably adapted to the properties of the liquid to be separatedu l:~or example suppos:ing tha-t a miineral oil floa-ting over the surface of a stretch of water has to be separatc-d; the depth and width o:~ the said grooves will have -to be adapted -to the material constituti.ng the surface of the movable element (and to be more preci.se to the affini-ty of the said material first for the oil and second for the water) and to the viscosity of the oil. The width and depth of the groove will need to be chosen so that the movable element dipped into the liquid mixture can be brought out with its grooves .
' .
.~ .
.
1~3~Q5~7 complet.ely filled wi-th oi:l, bu-t carryillgnc~ water away with it Generally, a fe~ prelimillary experi-men-ts with a movable clement hAvin~ a ~urface made oP a specific material ? and dipped into the oil-water mixt~re to be treated, will show what are the best dimensions (width and depth) to be given to the grooves made on the ~urface of the movable e:Lement. The tests conducted have proved that with a very viscous oil, it was advantageous to have very wide and deep grooves, whereas with a less viscous oil, narrower ancl relatively shallow grrooves were best~
It is obvious that the ~rooves should be as long as ~ossi.b:le on the effective surface of the movable element~
The disposition of the grooves on the movable element is in principle i.mmaterial. None-thcless, it llas been noted tl-at :it was rmoro advantag-eous for the grooves to be perpencdicular to the sur~ace of the liquid in and out of which they are dipped and consequently to be in a plane perpendicul-~ ar to the rotati.on axis Or the movable elementsO
When, according to the inventi.oll the movable elements used have a groovecl su.rface~ it is mostly recommended, for draining the surface of the said elemer,ts, to use a very deformable elastîc material such as rubber, or even better, a flexible foam which will be pressed against the surface to be . drainedO
; 30 Finally when the liquid to be separated is too viscous, it was found advantageous to reduce it~
viscosity when bringing said liquid in contact ~ith tlle surface of the movable elements. ~he easiest method to use, for obtaining such reduction of viscosity consi.sts in heating the movable elements (or only their surface); such heating can be done electrically, or through steam, or through any other known means.
An aspect of the invention is as follows:
s An apparatus for the separation of liquids and the recovery of one of these liquids, and in particular for the recovery of oils spreading over stretches of water, of the type wherein part of the surface of at least an element such as a disc, driven with a rotative movement, is brought into contact with the liquid mixture, said element being made of a material showing a physical affinity for the liquid to be recovered, and wherein the said liquid carried on the surface of the said element is thereafter recovered by wiping, in which apparatus the said element is constituted by one or more unitary elements, one face of which at least is truncated cone-shaped, the said unitary elements being driven in rotation about an axis traversing the fictitious apex of the said truncated cones.
~o The invention will be more readily understood on reading the following description with reference to the accompanying drawings.
Figure 1 is a cross-sectional view of a movable element according to the invention;
- Figure 2 is a front view of a movable element according to the invention;
- Figures 3 and 4 illustrate an apparatus according to the invention.
Figure 1 is a cross-sectional view of a movable element according to the invention. Said element is con-stituted by two truncated cones 1, 2 joined together along their largest base 3; the truncated cones are defined by two plane surfaces 5 and 6. The driving shaft is shown in 7.
With an element of this type, the "active"
surface of the element is constituted by the truncated cone-shaped surface; this is an advantage insofar as the ' ~
It is specified in -the said French patents that the movable element is constituted by at least a revolving surface belonging to one or more parts carried by a ro-tary horizontal sl1af't ancl driven by - . said shaft. In fact, what is describe(:l in the - 25 said patents as a movable elemen-t, is either a belt, or a series of circular discs, 01' a cylinder; although each produc-tion of movable element has itSol~
advantages and disadvantag~es, it wo~ld seelll that -the plarle circular discs were the best embodin1ent of the invention.
There has now been found an llnexpected : phenomenon which is that, when in -the kno~
: apparatus for separa-ting and recovering liquids, such as for example the method described in French Patents 2 203 400 and 2 203 IIOl, movable elements q~
' ' ':
. ' ' 1~3~:)5~
collsti-tutecl of two -truncated cones joined together by tlleir :largest base, al-e ~Ised in preference to plane circular discs, it is possibl.e to recover larger quantities of liquid, all other things being equal.
This di.scovery is asto:nishing owills to the fact that wllen the phenomena at stak.e were analyzed logically, it could be admitted that,the quantity : of liquid carried and recovered was solely dependent on the surface area of the movable element which, righl; -through the experinlen-t, was in contact with the liquid -to be ex-tracted; tlle preced:in~ remark is applicable, a:l.l other thirlgs being equal, and in - particular with the same types of liquids to be separated and ~ith the same material constituting the surface of the movable element(s).
In the liquid separation and recovery apparatus accord.ing to the invention, the movable extraction element will be constituted by a series of elements one face of which at 'least is truncated cone~shaped. Preferably, said elements are constituted by two truncated cones ~joined along their largest base.
By truncated cone is meant any conical revolving surface, the angle at the top of WhiCIl is less than loOO Truncatcd cones arc defincd in thcir largest portion by two plane bases joined alongside, and in their narrowest portion by surface.4 parallel to the bases, when the movable element is mounted on the rot.ation axis, in perpendicular to said axisO It was unexpectedly found that, all other things being equal (arld in particular the material and surface area of the movable element), the separation yield ~i.e. i.n effect the quantity of oil extracted) was greater with tr~mcated e].e~lents than with other linown elements such as ~3~2~5~
! discs or cylinders. The improvemen~ of this yield becomes obvious with respect to the disc as soon as the angle at -the top of the conical surface reaches abollt 160 -to 170 and with respect to the cy:linder as soon as -the said angle reaches about 10. It would seem that the optimtlm is reached with angles of tle order of 90. ln effect the said optimum i.s dependent on the proper-ties of the li~uids to be separated; for example in the most frequent cases where an oil spread over a water surface has to be separated it is noted -that the more viscous the oil the more advantageous it is to use truncated surfaces the angle at the top of which is small.
It was also found advantageous in order to increase the yield of the apparatus in many applications to use movable elements the outer surface of which is provided with grooves.
By grooves are meant here any scratches or lines with a certain length and a certain depth with respect to the overall surface Or the movable element.
Suitable groo~es used in the appa.ratus accord.ing to the invention will be prefe.rably adapted to the properties of the liquid to be separatedu l:~or example suppos:ing tha-t a miineral oil floa-ting over the surface of a stretch of water has to be separatc-d; the depth and width o:~ the said grooves will have -to be adapted -to the material constituti.ng the surface of the movable element (and to be more preci.se to the affini-ty of the said material first for the oil and second for the water) and to the viscosity of the oil. The width and depth of the groove will need to be chosen so that the movable element dipped into the liquid mixture can be brought out with its grooves .
' .
.~ .
.
1~3~Q5~7 complet.ely filled wi-th oi:l, bu-t carryillgnc~ water away with it Generally, a fe~ prelimillary experi-men-ts with a movable clement hAvin~ a ~urface made oP a specific material ? and dipped into the oil-water mixt~re to be treated, will show what are the best dimensions (width and depth) to be given to the grooves made on the ~urface of the movable e:Lement. The tests conducted have proved that with a very viscous oil, it was advantageous to have very wide and deep grooves, whereas with a less viscous oil, narrower ancl relatively shallow grrooves were best~
It is obvious that the ~rooves should be as long as ~ossi.b:le on the effective surface of the movable element~
The disposition of the grooves on the movable element is in principle i.mmaterial. None-thcless, it llas been noted tl-at :it was rmoro advantag-eous for the grooves to be perpencdicular to the sur~ace of the liquid in and out of which they are dipped and consequently to be in a plane perpendicul-~ ar to the rotati.on axis Or the movable elementsO
When, according to the inventi.oll the movable elements used have a groovecl su.rface~ it is mostly recommended, for draining the surface of the said elemer,ts, to use a very deformable elastîc material such as rubber, or even better, a flexible foam which will be pressed against the surface to be . drainedO
; 30 Finally when the liquid to be separated is too viscous, it was found advantageous to reduce it~
viscosity when bringing said liquid in contact ~ith tlle surface of the movable elements. ~he easiest method to use, for obtaining such reduction of viscosity consi.sts in heating the movable elements (or only their surface); such heating can be done electrically, or through steam, or through any other known means.
An aspect of the invention is as follows:
s An apparatus for the separation of liquids and the recovery of one of these liquids, and in particular for the recovery of oils spreading over stretches of water, of the type wherein part of the surface of at least an element such as a disc, driven with a rotative movement, is brought into contact with the liquid mixture, said element being made of a material showing a physical affinity for the liquid to be recovered, and wherein the said liquid carried on the surface of the said element is thereafter recovered by wiping, in which apparatus the said element is constituted by one or more unitary elements, one face of which at least is truncated cone-shaped, the said unitary elements being driven in rotation about an axis traversing the fictitious apex of the said truncated cones.
~o The invention will be more readily understood on reading the following description with reference to the accompanying drawings.
Figure 1 is a cross-sectional view of a movable element according to the invention;
- Figure 2 is a front view of a movable element according to the invention;
- Figures 3 and 4 illustrate an apparatus according to the invention.
Figure 1 is a cross-sectional view of a movable element according to the invention. Said element is con-stituted by two truncated cones 1, 2 joined together along their largest base 3; the truncated cones are defined by two plane surfaces 5 and 6. The driving shaft is shown in 7.
With an element of this type, the "active"
surface of the element is constituted by the truncated cone-shaped surface; this is an advantage insofar as the ' ~
3 ~ ~ ~ 7 totality of said surface can be used (by dipping the movable element into the oil-covered water until the oil reaches the level H shown in the Figure) the : surface of the treated liquid being still quite a distance from the driving axis 7.
Figure 2 is a front view of the movable element according to the invention and shows the axis 7, a plane end surface 5 of a truncated cone, and the truncated portion 1 of the element; on said truncated portion are provided concentric grooves, approximately 1.5 mm wide, and 1 mm deep, such grooves having proved efficient in separating a b ' , 21~5 lubric~tills oil floatin$ on the surface of waterO
The surface of suitable movable elements accordin~ to tlle i.nvention shollld be made of a material showing an affi.n.ity for one of the liquids (the one to be carried off and recovered) and no - affillity for the otllel^ li.quid. ~or example, to separate petroleum products rom the water over W}liCIl they are spread, ~uitable movable elements will be made o~ polyester or PVC; but it will be equally possible to use me-tall:ic materials or materials of which the sur~ace has been metalized, the metal being selected from those metals showing ~n affillitr for oils and.rlone for water.
Figures 3 and 4 illustra-te ncn-restrictively an embodiment of a-n apparatus according to the invention.
Figure 3 shows a diagrammatical top view and Figure 4 a cross-section along IV-IV of the apparatus.
The general diagrarn contained in Figures 3 and 4 show that the apparatus advantageously comprises:
- two axes 7 and 7' driven at a pre--selected speed (which speed can be selected ad lib), for exarnplc hotweeh 2 ancl 120 revs per minute (and prefc3rably between 5 and 50 revs per minute); qaid a~es rotate in opposite directions and drive into rotation a certain number of movable elements (1 and 1') sucll as described hereinabove, - said axes arc d:riven by motors, not shown, - the whole assernbly is mounted on a ~rame which frame is provided with floats 8; on the frame is provided a housing 9 (just outlined on the drawing), situated 30 -that, when the apparatus is :Cunctioning, the water cannot penetrate into the 3l~3i~57 reservoir in which the oils are recovered and which is provided in the apparatus, and this even though tlle surface of tl-le water rnay be agitated (waves, ripples, etc.~, - two wipin~s devices ~0 and 10' and a recoverirlg reservoir 11; said reservoir can be replaced by a simple pipe which will transport the hydrocarbon into a reser-voir situated on the quay or in an escorting ship~
The devices according to the invention can be used for example to extract undesirable liquids found in harbours, in decanting basin~ or even at sea. Often, one or more devices according to the invention are caused to move at a controlled speed over -the liquid area to be cleaned; this is done for example due to a small boat~ at the bow Or which is/are fixed the device or devices. ~etween the said device and boat, there is generally provided a dam-like reservoir constituted for example by a metal plate shaped as a cone or in arc of circle, the concavity facing the direction of movement, which plate comprises a submerged part and an emergillg part; wi-th this type of a barxier any light liquids floatin~ over the liquid mass are gathere,d and will be removed by the ~rear blades~ of the device according to the invention~
It is Or course possible to equip one such boat with moIe thclll one barrier-device assembly~
said assemblies beillgfound in front or on the sides of the boa-t~
In the special case where hydrocarbons are to be separated from water~ at sea for example or inside a har'bour, i-t is often recommended to provide, in addition to -the device according to the invention, and even to the dann-like reservoir, the installation - - . .
:, .
:' ~L13Z057 o of means permittin$ -to eliminate any floating seaweed that could interfere with the operation of the device according to the invention; to this effect, a device con~stit;uted by an axis, situated slightly above the water surface, provided with pins and rotating clockwise, is preferably used to catch -the said seaweed wi-th the pins and to depo~it them on a conveyor belt.
The results obtained when recovering petroleum hydrocarbons (OI' oil) spread over a stretch of water, are given hereafter. Three types of apparatus have been used to thi~ effect, each one being constituted by an axi~ rotating at 40 revs per minute and driving respectively a full cylinder, a disc and an element formed by two cones joined together according to the inventionO
The cones used, all had a top angle of 130 and (joined alongside) base~ of 30, 50, 60 and 100 cm of diameter. The variouq extracting elements (cylinders, discs, cones) ~ere all made of polyvinyl ; chloride and all had a smooth surface~
The results obtaine~ are given ~n the following table:
. , ~
; \
:. \
. . .
.
Zt3S7 , ELEMENTS SIJRFACE LITRE/MIN.
OF TIIE ELEMENTS Oli OIL
_________________~ .__________________ _____________ Cylinder 1 527.20 0.80 S Disc 1 413.00 V.80 Cones (diameter 30 cm) 1 130.50 1.70 __________________. ._____------------ -- 1 ._____________ Cylinder 3 014.40 1060 Disc 3 9Z5000 1.70 Cones (diameter 2 669,oo 4.00 __________________ ._________________~. ._____________ 60 cm) 5 652.00 7~62 __ __ _ _ _ _ __ _ _ _ __ _ _ _ _ _ _ __ ~ _ __ ____ _ _ ___ . . _ ___ ____ - ____ Cones (diameter 15 700,00 l 23.53 __________________ _~______ _________ _____________ :
:~ . ' ~```~
.
~: .
`: :`
:~ :
Figure 2 is a front view of the movable element according to the invention and shows the axis 7, a plane end surface 5 of a truncated cone, and the truncated portion 1 of the element; on said truncated portion are provided concentric grooves, approximately 1.5 mm wide, and 1 mm deep, such grooves having proved efficient in separating a b ' , 21~5 lubric~tills oil floatin$ on the surface of waterO
The surface of suitable movable elements accordin~ to tlle i.nvention shollld be made of a material showing an affi.n.ity for one of the liquids (the one to be carried off and recovered) and no - affillity for the otllel^ li.quid. ~or example, to separate petroleum products rom the water over W}liCIl they are spread, ~uitable movable elements will be made o~ polyester or PVC; but it will be equally possible to use me-tall:ic materials or materials of which the sur~ace has been metalized, the metal being selected from those metals showing ~n affillitr for oils and.rlone for water.
Figures 3 and 4 illustra-te ncn-restrictively an embodiment of a-n apparatus according to the invention.
Figure 3 shows a diagrammatical top view and Figure 4 a cross-section along IV-IV of the apparatus.
The general diagrarn contained in Figures 3 and 4 show that the apparatus advantageously comprises:
- two axes 7 and 7' driven at a pre--selected speed (which speed can be selected ad lib), for exarnplc hotweeh 2 ancl 120 revs per minute (and prefc3rably between 5 and 50 revs per minute); qaid a~es rotate in opposite directions and drive into rotation a certain number of movable elements (1 and 1') sucll as described hereinabove, - said axes arc d:riven by motors, not shown, - the whole assernbly is mounted on a ~rame which frame is provided with floats 8; on the frame is provided a housing 9 (just outlined on the drawing), situated 30 -that, when the apparatus is :Cunctioning, the water cannot penetrate into the 3l~3i~57 reservoir in which the oils are recovered and which is provided in the apparatus, and this even though tlle surface of tl-le water rnay be agitated (waves, ripples, etc.~, - two wipin~s devices ~0 and 10' and a recoverirlg reservoir 11; said reservoir can be replaced by a simple pipe which will transport the hydrocarbon into a reser-voir situated on the quay or in an escorting ship~
The devices according to the invention can be used for example to extract undesirable liquids found in harbours, in decanting basin~ or even at sea. Often, one or more devices according to the invention are caused to move at a controlled speed over -the liquid area to be cleaned; this is done for example due to a small boat~ at the bow Or which is/are fixed the device or devices. ~etween the said device and boat, there is generally provided a dam-like reservoir constituted for example by a metal plate shaped as a cone or in arc of circle, the concavity facing the direction of movement, which plate comprises a submerged part and an emergillg part; wi-th this type of a barxier any light liquids floatin~ over the liquid mass are gathere,d and will be removed by the ~rear blades~ of the device according to the invention~
It is Or course possible to equip one such boat with moIe thclll one barrier-device assembly~
said assemblies beillgfound in front or on the sides of the boa-t~
In the special case where hydrocarbons are to be separated from water~ at sea for example or inside a har'bour, i-t is often recommended to provide, in addition to -the device according to the invention, and even to the dann-like reservoir, the installation - - . .
:, .
:' ~L13Z057 o of means permittin$ -to eliminate any floating seaweed that could interfere with the operation of the device according to the invention; to this effect, a device con~stit;uted by an axis, situated slightly above the water surface, provided with pins and rotating clockwise, is preferably used to catch -the said seaweed wi-th the pins and to depo~it them on a conveyor belt.
The results obtained when recovering petroleum hydrocarbons (OI' oil) spread over a stretch of water, are given hereafter. Three types of apparatus have been used to thi~ effect, each one being constituted by an axi~ rotating at 40 revs per minute and driving respectively a full cylinder, a disc and an element formed by two cones joined together according to the inventionO
The cones used, all had a top angle of 130 and (joined alongside) base~ of 30, 50, 60 and 100 cm of diameter. The variouq extracting elements (cylinders, discs, cones) ~ere all made of polyvinyl ; chloride and all had a smooth surface~
The results obtaine~ are given ~n the following table:
. , ~
; \
:. \
. . .
.
Zt3S7 , ELEMENTS SIJRFACE LITRE/MIN.
OF TIIE ELEMENTS Oli OIL
_________________~ .__________________ _____________ Cylinder 1 527.20 0.80 S Disc 1 413.00 V.80 Cones (diameter 30 cm) 1 130.50 1.70 __________________. ._____------------ -- 1 ._____________ Cylinder 3 014.40 1060 Disc 3 9Z5000 1.70 Cones (diameter 2 669,oo 4.00 __________________ ._________________~. ._____________ 60 cm) 5 652.00 7~62 __ __ _ _ _ _ __ _ _ _ __ _ _ _ _ _ _ __ ~ _ __ ____ _ _ ___ . . _ ___ ____ - ____ Cones (diameter 15 700,00 l 23.53 __________________ _~______ _________ _____________ :
:~ . ' ~```~
.
~: .
`: :`
:~ :
Claims (5)
1. An apparatus for the separation of liquids and the recovery of one of these liquids, and in particular for the recovery of oils spreading over stretches of water, of the type wherein part of the surface of at least an element such as a disc, driven with a rotative movement, is brought into contact with the liquid mixture, said element being made of a material showing a physical affinity for the liquid to be recovered, and wherein the said liquid carried on the surface of the said element is thereafter recovered by wiping, in which apparatus the said element is constituted by one or more unitary elements, one face of which at least is truncated cone-shaped, the said unitary elements being driven in rotation about an axis traversing the fictitious apex of the said truncated cones.
2. An apparatus as claimed in claim 1, wherein the surface of the truncated cones is provided with grooves.
3. An apparatus as claimed in claim 1, wherein the said truncated cone-shaped elements are provided with devices permitting to heat them.
4. An apparatus as claimed in any one of claims 1, 2 or 3, wherein the said elements are constituted by two truncated cones joined together alongside their largest base.
5. An apparatus as claimed in claim 2, wherein the said truncated cone-shaped elements are provided with devices permitting to heat them and wherein the said elements are constituted by two truncated cones joined together alongside their largest base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA344,935A CA1132057A (en) | 1980-02-01 | 1980-02-01 | Apparatus for carrying out the separation of two liquids and the recovery of one of them |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA344,935A CA1132057A (en) | 1980-02-01 | 1980-02-01 | Apparatus for carrying out the separation of two liquids and the recovery of one of them |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1132057A true CA1132057A (en) | 1982-09-21 |
Family
ID=4116160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA344,935A Expired CA1132057A (en) | 1980-02-01 | 1980-02-01 | Apparatus for carrying out the separation of two liquids and the recovery of one of them |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1132057A (en) |
-
1980
- 1980-02-01 CA CA344,935A patent/CA1132057A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |