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1. (WO2005068044) SEPARATEUR ARCHIMEDIEN
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS:

1. An apparatus for separating a feed solution into a product solution of decreased concentration and an exhaust waste solution of increased concentration, the apparatus comprising;

(a) a supply source of feed solution of water having contaminants for separation,

b) a supply line for feeding said feed solution from the supply source to said apparatus;

c) means for driving said supply source into said apparatus under pressure;

d) at least one inlet line for deliveiy under pressure of said feed solution to at least one feed solution separator;

wherein, said feed solution is passed at a predetermined velocity through a stationary spiral formed in said at least one feed solution separator, sufficient to generate a centrifugid force on said feed solution which induces separation of the feed solution into said product solution of decreased concentration and exhaust waste solution of increased concentration.

2 An apparatus according to claim 1 wherein the feed solution travels from a first proximal end of the spiral in communication with the inlet to a second distal end of the spiral in communication including at least one outlet

3 An apparatus according to claim 2 wherein the spiral passage which receives said feed solution In the at least one separator is horizontal and of gradually increasing radial extent

4 An apparatus according to claim 3 wherein the spiral defines a cavity haing varied cross section along its length.

5 An apparatus according to claim 4 wherein the spiral cavity has a decreasing cross-section along its length.

6 An apparatus according to claim 5 wherein, the cross section of the spiral cavity decreases along its length from the at least one inlet to the at least one outlet

7 An apparatus according to claim 6 wherein the decreasing cross section of the spiral passage produces a continuously increasing velocity of said feed solution as it travels along the spiral passage.

8 An apparatus according to claim 7 wherein said pressure of the feed solution is induced through a pressure vessel in communication with said at least one separator.

9 An apparatus according to claim 8 wherein, the at least one separator is retained on the pressure vessel.

10 An apparatus according to^ claim 9 wherein; the assembly comprises one separator which functions as a desalinator.

1.1. An. apparatus according to claim 10 wherein the desalinator includes a generally annuar shaped main body comprising a base, a cover and sealing means,

12 An apparatus according to claim 11 wherein the spiral cavity in the desalinator is defined by a spiral groove in the base and an opposing surface on the cover.

13 An apparams according to claim 12 wherein, a spiral sealing means is disposed adjacent said spiral cavity such that in cross section the seal separates adjacent passages of said spiral cavity,

14 An apparatus according to claim 13 wherein, the desalinator includes a ceniral bore which receives and retains therein said pressure vesseL

15 An apparatus according to claim 14 wherein, the main body of the desalinator has a stepped centre core to which a plurality of ribs are attached.

16 An apparatus according to claim 15 wherein, the central bore of the desalinator enables said pressure vessel and said desalinator to meet in slidable engagement anywhere along the length of the pressure vessel .

17 An apparatus according to claim 16 wherein the base of the desalinator has sufficient depth to provide said spiral cavity as an Archimedian spiral.

18 An apparatus according to claim 17 wherein the spiral cavity is represented in polar co ordinates by the formula r = a 0 where r is the radius, a is the cross sectional area of the cavity and θ is an angle subtended from a centre of the desalinator.

19 An apparatus according to claim 18 wherein the desalinator includes an exhaust port for discharging waste material separated from the feed solution.

20 An apparatus according to claim 19 wherein the desalinator includes an exhaust port for discharge of feed solution with waste material removed.

21 An apparatus according to claim 20 wherein the exhaust port for die waste material is oriented at a tangent to a circumference of said desalinator taken at any radial distance from the centre of the desalinator,

22 An apparatus according to claim 21 wherein the exhaust port for the discharge of the feed solution with waste removed is disposed at an outermost radial extent of the spiral passage.

23 An apparatus according to claim 22 wherein said feed solution travels along a combined spiral and radial flow-path.

24 An. apparatus according to claim 23 further comprising support means for supporting said pressure vessel.

25 An apparatus according to claim 24 wherein the support assembly includes support plates.

26 An apparatus according to claim 25 wherein a working pressure of said pressure vessel is around half the design pressure of said pressure vessel,

27 An apparatus according to any of the foregoing claims wherein, a dividing slit is disposed at or near said outlet to said spiral to fecilitate discharge of product from one said outlets and waste exhaust from a second outlet.

28 An apparatus according to claim 27 wherein the slit is adjustable to ensure separation just prior to discharge of product solution and exhaust solution.

29 A separator for use in a separating apparatus for separating a feed solution into a product solution of decreased concentration and an exhaust waste solution of increased concentration, the apparatus comprising:

(a) a source of feed solution of water having contaminants for separation,

b) a supply line for feeding said feed solution from a supply source to said apparatus;

c). a pressure vessel

d) at least one inlet 1 irte for delivery of said feed solution to the pressure vessel under pressure?

the separator being retained on the pressure vessel and including: a base, a cover and sealing means;

a bore which receives and retains therein said pressure vessel; the separator further comprising;

a generally annuar shaped main body; and

having an internal horizontally disposed spiral passage of gradually increasing radial, extent which receives said feed solution;

wherein said feed solution is passed through the separator via said pressure vessel with sufficient velocity to generate a centrifugal force on said solution which induces separation of the feed solution into said product solution of decreased concentration and exhaust waste solution of increased concentration.

30 A separator according to claim 29 wherein, the separator is a desalinator having a spiral cavity with, varied cross section along its length. 31 A desalinator according to claim 30 wherein, the spiral passage has a decreasing cross-section along its length.

32 A desalinator according to claim 31 wherein, the cross section of the spiral cavity decreases along its length from the at least one inlet.

33 A desalinator according to claim 32 wherein tfte decreasing cross section of the spiral passage produces a continuously increasing velocity of said feed solution as it travels along the spiral passage.

34 A desalinator according to claim 33 wherein a slit is provided upstream of first and second outlets, the first said outlet allowing the product solution of decreased concentration to exit the spiral and the second outlet allowing the exhaust waste solution of increased concentration to exit the spiral;

35 A desalinator according to claim 34 wherein the slit is adjustable to allow separate discharge from the spiral of the product solution of decreased concentration and the exhaust waste solution of increased concentration.

36 A method for desalination of salt water using an apparatus for separating a feed solution into a product solution of decreased concentration and an exhaust waste solution of increased concentration, the apparatus comprising:

(a) a supply source of feed solution of water having contaminants for separation,

b) a supply line for feeding said feed solution from me supply source to said apparatus;

c) means for driving said supply source into said apparatus under pressure;

d) at least one inlet line for deliveiy under pressure of said feed solution to at least one feed solution separator?

the method comprising the steps of:

a) passing the feed solution at a predetermined velocity through a stationary spiral formed in said at least one feed solution separator,

b) allowing the feed solution to travel through the spiral generating a centrifugal force sufficient to induce a separation in the feed solution;

c) causing the product solution of decreased concentration to exit the spiral via an outiet;

d) causing the exhaust waste solution of increased concentration to exit the spiral via another outlet

37 A method according to claim 36 comprising the further step of providing a slit upstream of said outlets and adjusting the slit to ensure to allow separate discharge from the spiral of the product solution of decreased concentration and the exhaust waste solution of increased concentration.

38 A method according to claim 37 wherein; the slit is adjustable to allow separate discharge from the spiral of the product solution of decreased concentration and the exhaust waste solution of increased concentration irrespective of the velocity of the feed solution through said spiral..