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WO2008002559A2 - Mélangeur de fluides simplifié - Google Patents

Mélangeur de fluides simplifié Download PDF

Info

Publication number
WO2008002559A2
WO2008002559A2 PCT/US2007/014806 US2007014806W WO2008002559A2 WO 2008002559 A2 WO2008002559 A2 WO 2008002559A2 US 2007014806 W US2007014806 W US 2007014806W WO 2008002559 A2 WO2008002559 A2 WO 2008002559A2
Authority
WO
WIPO (PCT)
Prior art keywords
tubes
flow mixer
streamlined flow
mixing
tube
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.)
Ceased
Application number
PCT/US2007/014806
Other languages
English (en)
Other versions
WO2008002559A3 (fr
Inventor
William C. Pfefferle
Shahrokh Etemad
Benjamin D. Baird
Lance Smith
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Precision Combustion Inc
Original Assignee
Precision Combustion Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Precision Combustion Inc filed Critical Precision Combustion Inc
Publication of WO2008002559A2 publication Critical patent/WO2008002559A2/fr
Publication of WO2008002559A3 publication Critical patent/WO2008002559A3/fr
Priority to US12/317,524 priority Critical patent/US20090251989A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3132—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit by using two or more injector devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3132—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit by using two or more injector devices
    • B01F25/31322—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit by using two or more injector devices used simultaneously
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/59—Mixing reaction ingredients for fuel cells

Definitions

  • the present invention is generally directed to an apparatus for providing rapid mixing of two or more reactants.
  • the present invention is directed toward providing rapid mixing while eliminating regions of low velocity.
  • Rapid mixing is necessary to reduce the time that the fluid remains in an intermediate state of mixing.
  • Intermediate mixtures may have an increased reactivity compared to the completely mixed case or may react in such a way as to produce unwanted products.
  • Regions of low velocity either through stagnation of the flow in the wake of a structure inserted into the flow or through strong recirculations, are undesirable due to the possibility of stabilizing a flame or other region of unwanted rapid reaction.
  • Figure 1 is a longitudinal cut away of a streamlined flow mixer according to the present invention.
  • Figure 2 is a schematic representation of the discharge end of a streamlined flow mixer according to the present invention.
  • Figure 3 is a longitudinal cut away of a streamlined flow mixer according to the present invention.
  • Figure 4 depicts a profile cut away of two tubes of one embodiment of a streamlined flow mixer according to the present invention.
  • FIG. 1 provides a graphical depiction of the CFD results of a streamlined flow mixer according to the present invention.
  • a streamlined flow mixer according to the present invention is depicted in Figure 1.
  • Two fluid streams 13 and 15 are mixed to produce mixed stream 17.
  • the design incorporates a bed of tubes 10 which are flared on the downstream end. The bed is created such that the inlet of the tubes 10 is supported by passing though a specially manufactured plate 11 which is sealed around the tubes through brazing, welding, or other similar method.
  • the flaring is used to separate the tubes and provide a chamber for introducing fluid 15 into the mixing device. Large flaring avoids a large pressure drop for stream 16 at the expense of slightly higher pressure drop across stream 14 by having lower number of tubes.
  • the exit of the tubes 20 are supported by the tight packing of the surrounding flared tubes held in by an outer jacket or housing 12 which may or may not have a peripheral scalloping 30 as shown in Figure 2.
  • the current design produces rapid mixing through two mechanisms.
  • One flow is distributed into the other flow through multiple injection points 21 within stream 20 as shown in Figure 2. This maximizes the mixing of the fluids through diffusion.
  • the second mechanism for rapid mixing comprises developing large differences in the exit velocities between streams 20 and 21 of the reactants creating a strong and vigorous shear layer.
  • the first mechanism is further enhanced through multiple injection points 31 within tubes 10 as shown in Figure 4.
  • the present invention can also be used for mixing more than two fluids.
  • Figure 3 shows the geometry where three different fluids, Fluid A, Fluid B and Fluid C are mixed.
  • Variants of the design include, but are not limited to; (i) the geometric arrangement of the tubes in the bed such as, for example, that described in PCT/US2006/041257; (ii) variation of the geometry of the individual tubes (i.e. varying ratio of the flare, varying the diameters of the tubes, tube wall thickness, tube end geometry, etc.); (iii) extending the mixing by creating additional flow paths by alternating the supply to the interior tubes between two or more fluids, and inclusion of holes (item 31 in Figure 4) and slots in the end of the tubes to modify the open areas of the flow paths.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)

Abstract

Mélangeur de fluides simplifié comprenant un compartiment et une pluralité de tubes présentant une extrémité amont et une extrémité aval. Les tubes sont évasés à l'extrémité aval. Le mélangeur comprend une plaque collectrice et l'extrémité amont de chaque tube traverse cette plaque collectrice de façon à être scellée à l'intérieur. Le compartiment peut s'étendre plus loin en aval que les tubes et y former une région de mélange. Une seconde plaque collectrice peut être ajoutée pour mélanger plus de deux fluides.
PCT/US2007/014806 2006-06-26 2007-06-26 Mélangeur de fluides simplifié Ceased WO2008002559A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/317,524 US20090251989A1 (en) 2007-06-26 2008-12-23 Streamlined flow mixer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US81656906P 2006-06-26 2006-06-26
US60/816,569 2006-06-26

Publications (2)

Publication Number Publication Date
WO2008002559A2 true WO2008002559A2 (fr) 2008-01-03
WO2008002559A3 WO2008002559A3 (fr) 2008-07-03

Family

ID=38846262

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/014806 Ceased WO2008002559A2 (fr) 2006-06-26 2007-06-26 Mélangeur de fluides simplifié

Country Status (1)

Country Link
WO (1) WO2008002559A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110281031A1 (en) * 2008-12-18 2011-11-17 Eric Silberberg Industrial Vapour Generator For Depositing An Alloy Coating On A Metal Strip

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6186658B1 (en) * 1997-03-14 2001-02-13 Nippon Mitsubishi Oil Corporation Apparatus for mixing a fluid feedstock with particles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110281031A1 (en) * 2008-12-18 2011-11-17 Eric Silberberg Industrial Vapour Generator For Depositing An Alloy Coating On A Metal Strip
US10711339B2 (en) 2008-12-18 2020-07-14 Arcelormittal France Industrial vapor generator for depositing an alloy coating on a metal strip

Also Published As

Publication number Publication date
WO2008002559A3 (fr) 2008-07-03

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