Multi Fluid Injection Mixer

• US 20090213687A1
• Filed: 09/23/2005
• Published: 08/27/2009
• Est. Priority Date: 10/01/2004
• Status: Active Grant

• Current Assignee: Produced Water Absorbents, Inc.
• Original Assignee: Produced Water Absorbents, Inc.
• Inventors: Linga, Harald, Kalgraff, Bernt H., Nilsen, Finn P., Abiven, Ronan
• Granted Patent: US 9,295,953 B2
• Time in Patent Office: Days
• US Class Current: 366/167.200
• CPC Class Codes: B01D 17/047 with separation aids
• CPC Class Codes: B01F 2101/22 Mixing of ingredients for pharmaceutical or medical compositions
• CPC Class Codes: B01F 2101/2204 Mixing chemical components in generals in order to improve chemical treatment or reactions, independently from the specific application
• CPC Class Codes: B01F 2101/305 Treatment of water, waste water or sewage
• CPC Class Codes: B01F 2101/47 Mixing of ingredients for making paper pulp, e.g. wood fibres or wood pulp
• CPC Class Codes: B01F 2101/503 Mixing fuel or propellant and water or gas, e.g. air, or other fluids, e.g. liquid additives to obtain fluid fuel
• CPC Class Codes: B01F 2101/505 Mixing fuel and water or other fluids to obtain liquid fuel emulsions
• CPC Class Codes: B01F 23/10 Mixing gases with gases
• CPC Class Codes: B01F 23/20 Mixing gases with liquids
• CPC Class Codes: B01F 23/232 using flow-mixing means for introducing the gases, e.g. baffles
• CPC Class Codes: B01F 23/41 Emulsifying
• CPC Class Codes: B01F 23/451 by injecting one liquid into another
• CPC Class Codes: B01F 25/3131 with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements
• CPC Class Codes: B01F 25/3132 by using two or more injector devices
• CPC Class Codes: B01F 25/31322 used simultaneously
• CPC Class Codes: B01F 25/31331 Perforated, multi-opening, with a plurality of holes
• CPC Class Codes: B01F 25/31332 Ring, torus, toroidal or coiled configurations
• CPC Class Codes: B01F 25/45 Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads B01F25/44 takes precedence
• CPC Class Codes: B01F 25/4521 the components being pressed through orifices in elements, e.g. flat plates or cylinders, which obstruct the whole diameter of the tube
• CPC Class Codes: C02F 1/24 by flotation C02F1/465 takes precedence
• CPC Class Codes: C02F 1/52 : by flocculation or precipitation of suspended impurities C02F1/463 takes precedence
• CPC Class Codes: C02F 1/683 : by addition of complex-forming compounds
• CPC Class Codes: C02F 1/686 : Devices for dosing liquid additives
• CPC Class Codes: C02F 2103/10 : from quarries or from mining activities
• CPC Class Codes: C10G 31/08 : by treating with water
• CPC Class Codes: C10G 33/04 : with chemical means

Abstract

Multi Fluid Injection Mixer for injecting gas and/or liquid as admixture fluid to gas and/or liquid flowing through a pipe, and homogeneously mixing the admixture fluids and pipe fluids, said injection mixer constituting a section of the pipe, distinguished in that the injection mixer is comprising: at least one contacting element having at least one contacting surface facing and deflecting some of the pipe fluid flow, forming a constriction to the internal cross-section of the pipe, such that the pipe fluid flow is accelerated and fluid flowing in the vicinity of said surface is deflected to flow along the surface until the surface end over a sharp edge at the point of maximum constriction and flow velocity, at least one injection element arranged with a fluid connection to said surface of the contacting element, such that admixture fluid can be injected onto said surface and along said surface be entrained by the flowing pipe fluid over the sharp edge, but for a contacting element formed as a contracting pipe section at least two injection elements are provided.

Claims

1. Multi Fluid Injection Mixer (7) for injecting at least one injected fluid, which comprises gas and/or liquid, as an admixture fluid to a pipe fluid, which comprises gas and/or liquid flowing through a pipe (1), and homogeneously mixing the fluid and pipe fluid, said injection mixer constituting a section of the pipe, the injection mixer comprising:

at least one contacting element (2) having at least one contacting surface (2a, 2b) facing and deflecting some of the pipe fluid flow, forming a constriction to an internal cross-section of the pipe, such that the pipe fluid flow is accelerated and fluid flowing in the vicinity of said surface is deflected to flow along the contacting surface until the surface ends over a sharp edge (4, 4a, 4b) at a point of maximum pipe constriction and flow velocity,

at least one injection element (3, 3a, 3b) arranged with a fluid connection to said contacting surface of the contacting element, such that the admixture fluid can be injected onto said contacting surface and along said contacting surface be entrained by the flowing pipe fluid over the sharp edge.

2. Multi Fluid Injection Mixer according to claim 1, in which the contacting element (2) is substantially conical and is positioned within the pipe so as to have a central axis of the conical contacting element parallel to a central axis of the pipe, and so as to be narrow at an upstream end and wider at a downstream end.

3. Multi Fluid Injection Mixer according to claim 1, wherein the contacting element (2) comprises a plurality of conical sections, positioned over the cross section of the pipe.

4. Multi Fluid Injection Mixer according to claim 1, wherein the contacting element (2) comprises a plurality of cones, arranged over the cross section of the pipe.

5. Multi Fluid Injection Mixer according to claim 1, wherein the contacting element (2) comprises at least one conical annulus.

6. Multi Fluid Injection Mixer according to claim 1, in which the contacting element (2) comprises one conical member that is substantially conical and is positioned within the pipe so as to have a central axis parallel to a central axis of the pipe, and so as to be narrower in an upstream direction and wider in a downstream direction, and also comprises at least one conical annulus oriented with a narrower edge facing the upstream direction.

7. Multi Fluid Injection Mixer according to claim 1, characterized in that at least one passageway (10) for pipe fluid flow along the internal pipe wall, bypassing the contacting element, is provided.

8. Multi Fluid Injection Mixer according to claim 1, characterized in that the injection element (3) comprises at least one opening for injecting admixture fluid evenly over the contacting surface of the contacting element, upstream of the sharp edge.

9. Multi Fluid Injection Mixer according to claim 1, characterized in that one injection element (3) is arranged for each intended admixture fluid.

10. Multi Fluid Injection Mixer according to claim 1, in which:

at least two separate injection elements are provided, at least one of which is provided for a gaseous component of the admixture fluid and least one other of which is provided for a liquid component of the admixture fluid, and

the injection element(s) (3) for the gaseous component(s) is arranged upstream of the injection element(s) for the liquids component(s).

11. Multi Fluid Injection Mixer according to claim 1,

characterized in that the injection elements (3) are adjustable with respect to apertures and pressure for flow rate of admixture fluid of any type or mixture of admixture fluids.

12. Multi Fluid Injection Mixer according to claim 1,

characterized in that the contacting element (2) is assembled from interchangeable parts, thereby allowing for adaptation of the shape of the contacting element to prevailing conditions.

13. Multi Fluid Injection Mixer according to claim 1,

characterized in that the contacting element (2) includes a suspension having spring action, such that increased pipe flow rate results in increased opening for the admixture fluid and flow rate of the admixture fluid.

14. Multi Fluid Injection Mixer according to claim 1,

characterized in that the contacting element (2) and the injection element (3) are integrated as one unit.

17. An assembly comprising a multi-fluid injection mixer according to claim 1, a pipe section connected in a first end to an outlet of the injection mixer and, at a second end, to a re-mixer, the re-mixer comprising a housing with at least one regulating elements having a wall portion with a flow passage, said regulating elements being adjustable such that the flow passages can be focused at one point in a central chamber.

18. The assembly of claim 17, comprising a plurality of regulating elements, which adjoin each other in sealing arrangement and are individually displaceable.

19. Multi Fluid Injection Mixer according to claim 1, in which the contacting element is formed as a contracting pipe section and at least two injection elements are provided.

15. Mixer for homogeneous mixing of fluids flowing through a pipe, said mixer constituting a section of the pipe, the mixer comprising:

at least one contacting element (2) having at least one surface facing and deflecting some of the pipe fluid flow, forming a constriction to the internal cross-section of the pipe, such that the pipe fluid flow is accelerated and fluid flowing in the vicinity of said surface is deflected to flow along the surface to a point at which the surface ends at a sharp edge (4) at a point of maximum constriction and flow velocity.

16. (canceled)