EP3535059A1 - Dispositif de precipitation et separation de particules solides dissoutes dans un liquide comprenant un moyen de creation et de maintien de vortex, application au dessalement de l'eau de mer ou de l'eau saumâtre - Google Patents
Dispositif de precipitation et separation de particules solides dissoutes dans un liquide comprenant un moyen de creation et de maintien de vortex, application au dessalement de l'eau de mer ou de l'eau saumâtreInfo
- Publication number
- EP3535059A1 EP3535059A1 EP17790796.1A EP17790796A EP3535059A1 EP 3535059 A1 EP3535059 A1 EP 3535059A1 EP 17790796 A EP17790796 A EP 17790796A EP 3535059 A1 EP3535059 A1 EP 3535059A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vortex
- reservoir
- solid particles
- liquid
- creating
- 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.)
- Withdrawn
Links
- 239000002245 particle Substances 0.000 title claims abstract description 60
- 239000007787 solid Substances 0.000 title claims abstract description 55
- 239000007788 liquid Substances 0.000 title claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 28
- 238000000926 separation method Methods 0.000 title claims description 27
- 239000013535 sea water Substances 0.000 title claims description 19
- 238000010612 desalination reaction Methods 0.000 title claims description 14
- 238000001556 precipitation Methods 0.000 title claims description 14
- 230000033001 locomotion Effects 0.000 claims abstract description 13
- 238000002347 injection Methods 0.000 claims description 26
- 239000007924 injection Substances 0.000 claims description 26
- 238000011144 upstream manufacturing Methods 0.000 claims description 22
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 18
- 229910052737 gold Inorganic materials 0.000 claims description 18
- 239000010931 gold Substances 0.000 claims description 18
- 238000010926 purge Methods 0.000 claims description 10
- 230000005484 gravity Effects 0.000 claims description 5
- 239000003102 growth factor Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 4
- 238000010079 rubber tapping Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 abstract description 4
- 235000002639 sodium chloride Nutrition 0.000 description 20
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 13
- 150000003839 salts Chemical class 0.000 description 12
- 239000011780 sodium chloride Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000001914 filtration Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical class [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000013505 freshwater Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000013502 plastic waste Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 239000001175 calcium sulphate Substances 0.000 description 1
- 235000011132 calcium sulphate Nutrition 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 231100000481 chemical toxicant Toxicity 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000006193 liquid solution Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 235000011147 magnesium chloride Nutrition 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 1
- 229910052939 potassium sulfate Inorganic materials 0.000 description 1
- 239000001120 potassium sulphate Substances 0.000 description 1
- 235000011151 potassium sulphates Nutrition 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/08—Vortex chamber constructions
- B04C5/081—Shapes or dimensions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/02—Construction of inlets by which the vortex flow is generated, e.g. tangential admission, the fluid flow being forced to follow a downward path by spirally wound bulkheads, or with slightly downwardly-directed tangential admission
- B04C5/04—Tangential inlets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/08—Vortex chamber constructions
- B04C5/103—Bodies or members, e.g. bulkheads, guides, in the vortex chamber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/08—Vortex chamber constructions
- B04C5/107—Cores; Devices for inducing an air-core in hydrocyclones
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/24—Multiple arrangement thereof
- B04C5/26—Multiple arrangement thereof for series flow
Definitions
- the present invention relates to the field of precipitation and separation of solid particles initially dissolved in a liquid.
- It relates more particularly to a mechanical separation device that uses the effect of the centripetal force and therefore implements a vortex creation and maintenance means for effecting the desired precipitation and separation of solid particles initially dissolved in a liquid .
- the main applications are the desalination of seawater or brackish water or the softening of water laden with limestone.
- the invention nonetheless applies to any liquid solution in which dissolved species are present which once precipitated become solid particles that can be separated from the liquid.
- seawater One of the important characteristics of seawater is its salinity, ie the total content of dissolved salts (sodium and magnesium chlorides, sulphates, carbonates).
- the average salinity of the waters of the seas and oceans is 35 g per liter, the main salt of which is sodium chloride (NaCl) with a concentration of 27.2 g per liter.
- the other salts are magnesium chloride (MgCl 2 ), magnesium sulphate (MgSO 4), calcium sulphate (CaSO 4 ), potassium sulphate (K 2 SO 4 ) with respective concentrations in the range of 23 , 8 g / l, 1.7 g / l, 1.26 g / l and 0.86 g / l.
- Briny water is saltwater that has no salinity and is less saline than seawater. Most brackish water contains between 1 and 10 g of salt per liter. It is sometimes surface water but most often groundwater that has been loaded with salts by dissolving certain salts present in the soils they have crossed. Their composition therefore depends on the nature of the soils crossed and the speed of circulation in these soils. The main dissolved salts are CaCO 3 , CaSO 4 , magnesium carbonate (MgCO 3 ) and NaCl. In the field of desalination of seawater or brackish water, many systems have reached the industrial stage. The two most commonly used processes are distillation and reverse osmosis: [1]. Other techniques have not experienced significant growth in the field because of problems generally related to energy consumption and / or the amount of investment they require.
- Distillation consists of evaporating the seawater, either by using the heat of the sun's rays, or by heating it in a boiler. Only the molecules of water escape, leaving in deposit dissolved salts and all the other substances contained in the sea water. It is then enough to condense the water vapor thus obtained to obtain a fresh water consumable.
- Reverse osmosis requires treating the seawater first by filtering and disinfecting it in order to rid it of the suspended elements and the microorganisms it contains. The process then consists in applying to this salt water a sufficient pressure to pass it through a semi-permeable membrane: only the water molecules pass through the membrane, thus providing fresh drinking water.
- Patent US6635150B1 proposes an improvement to multi-effect evaporators that further reduces energy losses while gaining simplicity. Whatever the process of separation between salts and water realized to date, all the desalination plants comprise four units which carry out the following successive stages:
- the object of the invention is to respond at least in part to this need.
- the invention relates, in one of its aspects, to a device for separating solid particles suspended in a liquid and / or liquids of different densities, comprising:
- a buffer tank of symmetry of revolution about a vertical axis, the reservoir comprising at least one injection orifice in liquid charged with solid particles or in at least two liquids of different densities, and an outlet orifice arranged in part lower around the axis of revolution of the tank;
- the solution according to the invention consists in using the centripetal movement to firstly separate the particles in suspension and then precipitate the solid particles initially in dissolved form in the liquid, and then concentrate them inwards and downwards of the vortex .
- the great length of the vortex is determined in order to obtain physical characteristics making it possible to reach a very low pressure so that the solubility criterion of the solids initially dissolved in the liquid is no longer respected.
- the solid particles are expelled from the liquid and agglomerate before being discharged through the collection tube.
- centripetal movement is meant here and in the context of the invention, the definition given by the author of the reference [2], namely a convergent, contracting, consolidating, creative movement, favorable to integration , constructive and friction reduction.
- the device of the invention consists of a combination of the following means:
- patent application CN 103537211 relates to the activation and purification of water containing toxic chemical molecules.
- the patent application CN 103537220 discloses the generation of homogeneous emulsion.
- the respect of the golden ratio for the shape and / or the ratio of the dimensions of the reservoir will contribute to maintaining the centripetal movement optimally over the height of the reservoir.
- the density of the liquid makes the speed of rotation of the liquid will be close to zero at the inner wall of the buffer tank. A surface current is created which pushes the liquid towards this inner wall.
- This current will continue down the wall. Then, towards the bottom of the tank, that is to say near the outlet, the current returns to the center and goes down around the central axis of the tank. This current thus causes the solid particles towards the center downwards, that is to say towards the outlet orifice and thus towards the inside of the collection tube.
- a separator according to the invention Compared to the seawater and brackish water desalination devices according to the state of the art, a separator according to the invention has reduced energy consumption, reduced maintenance, much simpler design and realization. which allow a drastic reduction in investment costs.
- the buffer tank of the device according to the invention may have a diameter of a few tens of centimeters to a few meters and the total height of the device may be between 1 and a few tens of meters.
- the capacity of the separation device according to the invention can vary from a few liters per hour, typically for domestic applications, to several thousand m 3 / h, typically for industrial applications.
- the shape of the reservoir is an ovoid of determined dimensions from a regular pentagon.
- the shape of the reservoir is an ellipsoid of revolution, obtained by rotation about the vertical axis of an ellipse, called the golden ellipse, whose ratio between the lengths of the major axis and the minor axis is equal to the number of gold.
- the shape of the reservoir is a hemispherical portion connected to a half-ellipsoid of revolution, the ellipsoid of revolution obtained by rotation about the vertical axis of an ellipse, called a gold ellipse, whose ratio between lengths of the major axis and the minor axis is equal to the number of gold.
- a cylinder fixedly mounted in the injection orifice the cylinder comprising a groove wound in a circular helix
- the free end of the rotary shaft is preferably approximately merged with the lower top of the tank.
- the shaft having an internal frustoconical helix shape whose projection on a plane orthogonal to the vertical axis is a logarithmic spiral, called a gold spiral, with a growth factor equal to the number of gold ⁇ , the injection orifice being the largest section of the frustoconical helix.
- the outlet orifice is in the shape of a truncated cone which converges from top to bottom.
- the half-opening angle (a) of the cone is between 6 and 10 °.
- the distance between the upper end of the collection tube and the outlet orifice of the reservoir is adjustable so as to be able to modify the collection rate of the solid particles.
- the device comprises at least one vent in the upper part of the buffer tank to evacuate the gases present.
- the device comprises a confinement envelope arranged around the outlet orifice and the collection tube, defining an interior volume in which the liquid is confined, with a view to being evacuated.
- the upstream device thus makes it possible to collect and evacuate the particles initially in solid form, while the downstream device according to the invention makes it possible to precipitate and collect the solid particles initially in dissolved form.
- the upstream device makes it possible to remove the suspended solids (algae, plastic waste or other), while the downstream device according to the invention makes it possible to extract the salts. dissolved, especially sodium chloride NaCl.
- the subject of the invention is also a separation system comprising:
- a separation device constituting the upstream device comprising:
- a buffer tank of symmetry of revolution about a vertical axis (X), the tank comprising at least one liquid injection port charged with solid particles, and an outlet orifice, arranged in the lower part around the axis of revolution of the tank;
- At least one means for creating and maintaining a vortex generating a centripetal movement of (the) liquid (s) from the periphery of the reservoir to its center on at least a portion of the height of the latter; the shape and / or the ratio between the dimensions of the reservoir and / or the means for creating and maintaining the vortex is (are) determined from the number of gold ⁇ ;
- the upstream device comprises at least one evacuation orifice arranged in the lower part of its confinement envelope, forming a stitching connected to the injection orifice of the buffer tank of the downstream device.
- the confinement envelope of one and / or the other of the two devices consisting of a cylinder connected on the periphery of the reservoir between the injection orifice and the outlet orifice, and a hemisphere-shaped bottom connected to the cylinder.
- the system comprises at least one flow control valve between the stitching of the upstream device and the injection orifice of the downstream device.
- one and / or the other of the two devices may comprise at least one purge valve on the collection tube to evacuate the solid particles collected.
- the downstream device comprises at least one purge orifice, arranged in the lower part of its confinement envelope, to evacuate the liquid free of solid particles.
- an isolation valve is provided downstream of the purge port, to isolate the confinement envelope of the downstream device.
- the invention finally relates to the use of a device or the system described above, to achieve the desalination of sea water or brackish water or to achieve the softening of water loaded with limestone.
- FIG. 1 is a schematic longitudinal sectional view of a first example solid-liquid separation device according to the invention
- FIGS. 1A and 1B are cross-sectional views along A-A and B-B of Figure 1;
- FIGS. 2 and 2A are respectively a longitudinal sectional view showing a first embodiment of a part of the precipitation and separation device according to the invention which makes it possible to create and maintain a vortex, and a sectional view transverse along A-A;
- FIG. 3 is a longitudinal sectional view showing a second embodiment of a part of the separation precipitation device according to the invention which makes it possible to create and maintain a vortex;
- FIG. 3A is a side view showing the means for creating and maintaining the vortex according to the mode of FIG. 3;
- FIG. 4 is a longitudinal sectional view showing a fourth embodiment of a portion of the precipitation and separation device according to the invention which makes it possible to create and maintain a vortex;
- FIG. 5 is a longitudinal sectional view showing a variant of the reservoir and its outlet orifice with means for creating and maintaining the vortex according to FIG. 4;
- FIG. 6 is a schematic view showing a separation system comprising a solid-liquid separation device, upstream of a precipitation and separation device according to the invention.
- upstream and downstream are to be considered in relation to the circulation of the liquid in a device and a system according to the invention.
- FIG. 1 A device 1 for precipitating and separating solid particles initially in dissolved form in a liquid is illustrated in FIG.
- a buffer tank 2 of symmetry of revolution about a vertical axis X In the embodiment illustrated in FIG. 1, the shape of the tank 2 is an ovoid of determined dimensions from a regular pentagon. .
- the tank 2 is pierced with two injection orifices 20, 21, through which the liquid charged with solid particles can be injected, and an outlet orifice 22 arranged in the lower part around the axis of revolution X.
- the outlet orifice 22 is in the form of a truncated cone which converges from top to bottom.
- the truncated cone 22 has dimensions such that the ratio between its large base and its small base is equal to the golden ratio.
- the half aperture angle ⁇ of the cone is between 6 and 10 °, typically equal to about 8.69 °.
- the inside diameter of the injection orifices 20, 21 is of the order of 6 mm
- the inside diameter of the ovoid tank 2 is equal to 65 mm
- the height between the top of the reservoir 2 and the axis of the injection orifices 20, 21 is equal to 32 mm
- the height between the axis of the injection orifices 20, 21 and the large base of the truncated cone 22 is equal to 47 mm
- the value of the large base of the truncated cone 22 is equal to 20 mm, while that of its small base is equal to 12.36 mm,
- the height of the truncated cone 22 is equal to 25 mm.
- a means 3 for creating and maintaining a vortex V generates a centripetal movement of the liquid (s) from the periphery of the tank 2 towards its center on at least a part of the height of the latter .
- the means 3 such that its shape and / or the ratio between its dimensions is (are) determined (s) from the golden number ⁇ , equal to 1.618.
- the length L of the vortex created is such that the pressure reached at the bottom of the vortex is sufficiently low so that at least a portion of the dissolved particles no longer exceeds the solubility limit and thus becomes solid by precipitation.
- the precipitated particles are collected at the center and at the bottom of the vortex.
- the means 3 is a means for injecting the liquid loaded with solid particles initially and in the form tangentially dissolved in the upper part of the buffer tank 2.
- the injection orifices 20, 21 are for this purpose made on one of the upper diameters of the reservoir and the vortex is generated tangentially to this diameter as symbolized by the arrows in these Figures 2 and 2 A.
- the means is a cylinder 31 fixedly mounted in the injection port 20 along the axis of revolution X.
- the cylinder 31 comprises a groove 310 wound in a circular helix.
- this cylinder 31 is in a way an injector that allows the rotation of the liquid to generate the desired vortex V.
- the means is a shaft 32 rotatably mounted vertically along the axis X of the tank 2.
- the shaft 32 has an outer frustoconical helix shape whose projection on a plane orthogonal to the vertical axis is a logarithmic spiral, called a gold spiral, with a growth factor equal to the golden number ⁇ .
- the free end 33 of the rotary shaft 32 is approximately merged with the lower peak of the tank.
- the position indicates which elevation is considered each section.
- the position of zero value indicating the top of the helix of the rotary shaft.
- the height of the helix is approximately equal to 435.5 mm for Example 1, while it is of the order of 609.6 mm for Example 2.
- the length L of the vortex is a function of the number of gold that depends on the desired residual solids content. For example 1, the desired length L so that the pressure reached at the bottom of the vortex is sufficiently low to precipitate the particles in solid form is equal to 1844 mm.
- a collection tube 4 is arranged below the outlet orifice 22 of the tank 2 to collect by gravity the solid particles concentrated towards the interior of the vortex.
- the distance D between the upper end of the collection tube 4 and the outlet orifice 22 of the reservoir is intended to be adjustable. This makes it possible to modify the collection rate of the solid particles. To obtain such a variable distance, it is possible to provide a tube 4 of variable height and / or a variable height of the lower volume between the orifice 22 and the tube 4.
- the distance D can vary from 50 to 300 mm .
- a vent with an isolation valve 5 is provided in the upper part of the buffer tank 2 to evacuate the gases present. This can allow in particular to evacuate the gases initially present in the liquid laden with solid particles in dissolved form.
- the precipitation and separation device finally comprises a containment envelope 6 arranged around the outlet orifice 22 and the collection tube 4.
- This envelope 6 thus defines an interior volume in which the liquid initially charged with dissolved particles is confined for the purpose of being discharged through the collection tube 4.
- the casing 6 comprises one or more discharge orifices 60, 61, arranged in the lower part.
- the remaining liquid possibly loaded with particles still in dissolved form, can thus be discharged continuously from the envelope 6.
- the confinement envelope 6 may consist of a cylinder 63 connected on the periphery of the reservoir 2, between the injection orifice 20, 21 and the outlet orifice 22, and a hemispherical bottom 64 connected to the cylinder 63.
- FIG. 1 Such a system with two devices 1.1, 1.2 according to the invention, in series is illustrated in FIG.
- the two discharge orifices 60, 61 of the upstream device 1.1 which make it possible to evacuate the liquid loaded with solids in dissolved form and which are arranged in the lower part of the confinement envelope 6, form connected taps. each at one of the injection orifices 20, 21 of the buffer tank 2 of the downstream device 1.2.
- a flow control valve 7 On each line connecting a tapping 60, 61 of the upstream device 1.1 to an injection port 20, 21 of the downstream device, a flow control valve 7 is arranged.
- Two purge valves 8, 9 forming a sealed airlock are arranged on the collection tube 4 of the upstream device 1.1 to evacuate the densest collected solid particles.
- the downstream device 1.2 comprises meanwhile at least one purge port 10 arranged in the lower part of its containment envelope 6, to evacuate the liquid free of solid particles.
- an isolation valve 11 is provided downstream of the purge orifice 10 to isolate the confinement envelope 6 from the downstream device 1.2.
- the system is particularly suitable for desalination application of seawater or brackish water: the upstream device 1.1 collects algae, plastic waste or other present in this form in water and the downstream device 1.2 allows to collect the solid particles of salts, in particular NaCl or CaCO 3, initially dissolved in water.
- each upstream device 1.1 and downstream device 1.2 comprises injection orifices 20,
- the internal diameter of the confinement envelope 6 of the upstream device 1.1 is equal to 65 mm and the length L of the vortex is of the order of 400 mm,
- the distance D of the upstream device 1.1 varies from 50 to 300 mm
- the internal diameter of the collection tube 4 of the upstream device 1.1 is equal to 20 mm
- the height of the collection tube 4 of the upstream device 1.1 inside the envelope 6 is equal to 330 mm
- the internal diameter of the connections 60, 61 of the upstream device 1.1 is equal to 6 mm
- the internal diameter of the confinement envelope 6 of the downstream device 1.2 is equal to 65 mm and the length L of the vortex is of the order of 600 mm,
- the distance D of the downstream device 1.2 varies from 50 to 500 mm
- the diameter of the hemispherical bottom 64 of the downstream device is equal to 65 mm; the internal diameter of the collection tube 4 of the downstream device 1.1 is equal to 20 mm,
- the height of the collection tube 4 of the downstream device 1.2 inside the casing 6 is equal to 530 mm, the internal diameter of the purge orifice is equal to 10 mm.
- Different types of materials may be used for producing the tank 2, means for creating and maintaining vortex 31, 32, and the containment envelope 6.
- these materials may be made of copper or stainless steel, preferably coated with one or more thin layers based on copper and / or silver.
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Geometry (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
- Physical Water Treatments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1660595A FR3058073A1 (fr) | 2016-11-02 | 2016-11-02 | Dispositif de precipitation et separation de particules solides dissoutes dans un liquide comprenant un moyen de creation et de maintien de vortex, application au dessalement de l'eau de mer ou de l'eau saumatre |
| PCT/EP2017/077919 WO2018083102A1 (fr) | 2016-11-02 | 2017-10-31 | Dispositif de precipitation et separation de particules solides dissoutes dans un liquide comprenant un moyen de creation et de maintien de vortex, application au dessalement de l'eau de mer ou de l'eau saumâtre |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3535059A1 true EP3535059A1 (fr) | 2019-09-11 |
Family
ID=59520937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17790796.1A Withdrawn EP3535059A1 (fr) | 2016-11-02 | 2017-10-31 | Dispositif de precipitation et separation de particules solides dissoutes dans un liquide comprenant un moyen de creation et de maintien de vortex, application au dessalement de l'eau de mer ou de l'eau saumâtre |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3535059A1 (fr) |
| FR (1) | FR3058073A1 (fr) |
| WO (1) | WO2018083102A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3088926A1 (fr) | 2018-11-23 | 2020-05-29 | Commissariat A L' Energie Atomique Et Aux Energies Alternatives | Système de purification et/ou de désinfection d’eau comprenant des moyens de création et de maintien de vortex, comprenant un dispositif phonique en amont du vortex et un dispositif de balayage photonique en aval du vortex |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19612059A1 (de) * | 1996-03-27 | 1997-10-02 | Fraunhofer Ges Forschung | Vorrichtung zum Abscheiden von Feststoffen aus Fluiden |
| FR2781387B1 (fr) | 1998-07-24 | 2000-09-15 | Eau De Nancy Nan C I E Centre | Procede pour la distillation d'un fluide a transfert horizontal de vapeur dans la zone de condensation et dispositif modulaire de mise en oeuvre du procede |
| MY134342A (en) * | 2001-12-31 | 2007-12-31 | Shell Int Research | Multistage fluid separation assembly and method |
| US7931740B2 (en) * | 2008-06-20 | 2011-04-26 | The Boeing Company | Cyclone separator |
| WO2014175083A1 (fr) * | 2013-04-23 | 2014-10-30 | 株式会社静岡プラント | Dispositif à cyclone |
| CN103537211B (zh) | 2013-10-10 | 2015-07-15 | 彭伟明 | 双涡旋体涡旋乳化的方法和装置 |
| CN103537220B (zh) | 2013-10-25 | 2015-07-08 | 浙江钱锦气雾剂制品有限公司 | 一种环保的储液罐 |
-
2016
- 2016-11-02 FR FR1660595A patent/FR3058073A1/fr not_active Withdrawn
-
2017
- 2017-10-31 WO PCT/EP2017/077919 patent/WO2018083102A1/fr not_active Ceased
- 2017-10-31 EP EP17790796.1A patent/EP3535059A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018083102A1 (fr) | 2018-05-11 |
| FR3058073A1 (fr) | 2018-05-04 |
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