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WO2008126027A4 - Device for pipe flow pulsation - Google Patents

Device for pipe flow pulsation Download PDF

Info

Publication number
WO2008126027A4
WO2008126027A4 PCT/IB2008/051365 IB2008051365W WO2008126027A4 WO 2008126027 A4 WO2008126027 A4 WO 2008126027A4 IB 2008051365 W IB2008051365 W IB 2008051365W WO 2008126027 A4 WO2008126027 A4 WO 2008126027A4
Authority
WO
WIPO (PCT)
Prior art keywords
chamber
pressure
flow
oscillation
sound emitting
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/IB2008/051365
Other languages
French (fr)
Other versions
WO2008126027A3 (en
WO2008126027A2 (en
Inventor
Dos Santos Ricardo Jorge Nogueira
Lopes Jose Carlos Brito
Queiroz Dias Madalena Maria Gomes
Ertugrul Erkoc
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.)
Universidade do Porto
Original Assignee
Universidade do Porto
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 Universidade do Porto filed Critical Universidade do Porto
Publication of WO2008126027A2 publication Critical patent/WO2008126027A2/en
Publication of WO2008126027A3 publication Critical patent/WO2008126027A3/en
Publication of WO2008126027A4 publication Critical patent/WO2008126027A4/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
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0093—Microreactors, e.g. miniaturised or microfabricated reactors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
    • B01F31/80—Mixing by means of high-frequency vibrations above one kHz, e.g. ultrasonic vibrations
    • B01F31/84—Mixing by means of high-frequency vibrations above one kHz, e.g. ultrasonic vibrations for material continuously moving through a tube, e.g. by deforming the tube
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
    • B01F31/80—Mixing by means of high-frequency vibrations above one kHz, e.g. ultrasonic vibrations
    • B01F31/85—Mixing by means of high-frequency vibrations above one kHz, e.g. ultrasonic vibrations with a vibrating element inside the receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/20—Measuring; Control or regulation
    • B01F35/22—Control or regulation
    • B01F35/2201—Control or regulation characterised by the type of control technique used
    • B01F35/2202—Controlling the mixing process by feed-back, i.e. a measured parameter of the mixture is measured, compared with the set-value and the feed values are corrected
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/20—Measuring; Control or regulation
    • B01F35/22—Control or regulation
    • B01F35/2201—Control or regulation characterised by the type of control technique used
    • B01F35/2209—Controlling the mixing process as a whole, i.e. involving a complete monitoring and controlling of the mixing process during the whole mixing cycle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J19/10—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing sonic or ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/30—Micromixers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00781—Aspects relating to microreactors
    • B01J2219/00889—Mixing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Pipe Accessories (AREA)
  • Physical Water Treatments (AREA)
  • Reciprocating Pumps (AREA)

Abstract

The present invention provides a device able to induce a pressure and flow rate oscillation in a liquid stream that flows inside a pipe. The said stream is fed through an inlet (2) into a chamber (1) comprising one or more sound emitting devices (4) with a frequency and amplitude set by one or more electrodynamical sound sources (6), imposing an oscillation of one or more diaphragms (5) in order to produce a pulsed flow at one or more chamber outlets (3), allowing the incorporation of measuring instruments (7) to monitor the vibration characteristics of the outlet (3). The pulsed stream can be used as feeding stream in micro reactors, precipitators, static mixers, cutting jets, erosion and polishing jets, combustion or explosion chambers, and units for emulsification.

Claims

AMENDED CLAIMS received by the International Bureau on 09 December 2008 (09.12.2008)
1. Device for flow pulsation inside a pipe, comprising at least a chamber (1) with at least one liquid stream inlet (2) and outlet (3), comprising means to add a flow rate and pressure oscillation to a liquid feeding stream stemming through the said outlet port (3) to a separate device which receives said flow and pressure oscillation, by means of a pulsating device (4) that vibrates the respective diaphragm (5) influencing the fluid inside the chamber.
2. Device according to claim 1, characterized in that the vibration frequency and amplitude are caused by a electrodynamic device.
3. Device according to claim 2, characterized in that the vibration frequency and amplitude are caused by a sound emitting device (4) .
4. Device according to claim 1 characterized in that the diaphragm vibration is set by an electric wave signal generated by a signal source (6) .
5. Device according to claim 1, comprising more than one sound emitting device (4) in the same chamber (1) by means of one or more sources (6) of electrical signal
(14a, 14b and 14c) .
6. Device according to claim 1, comprising a measuring instrument for the flow oscillation such as an hydrophone or pressure transducer (7), which allows control of the electrical wave signal (14a, 14b and 14c) sent to the sound emitting device (4), so that desired frequency and amplitude values can be set for the said flow and pressure oscillation, creating a closed-loop circuit.
7. Device according to claim 6, characterized in that the said flow and pressure oscillation is near or at resonance with the natural frequency of the flow.
8. Device according to claim 1, characterized in that a pressure equalization chamber (8) is coupled to the exterior of the chamber (1), adjacent to the sound emitting device (4) and respective diaphragm (5), covering the entire diaphragm (5) area with a gas which is compressible at a pressure between the pressure inside the chamber (1) and atmospheric pressure, or any other pressure existing outside the chamber (1) .
9. Device according to claim 8, characterized in that the walls of the pressure equalization chamber (8) are partially made of a resilient material (9), which allows a variation in the chamber volume.
10. Device according to claim 8, comprising the means for high pressure operation, namely a flow rate restrictor or needle valve (11) at the inlet (2) and manometer (10) to control the pressure inside the pressure equalization chamber (8) .
11. Device according to claim 1, comprising two pulsation chambers (1, Ia), wherein the diaphragms (5, 5a) of the sound emitting devices, such as electrodynamic speakers, are connected to opposite ends of the same coil (12), oscillating in anti-phase manner, such that an out-of-phase pulsation of two liquid streams (2, 2a) is obtained.
12. Device according to claim 11, characterized in that the connection chamber (13) between said pulsation chambers (1, Ia) is filled with an incompressible fluid.
13. Device according to claim 1, characterized in that the said separate device, which receives said flow and pressure oscillation, is one of the following: a T-jet micro reactor, a static mixer, a cutting or erosion jet, a burning chamber or an emulsifier.
PCT/IB2008/051365 2007-04-11 2008-04-10 Device for pipe flow pulsation Ceased WO2008126027A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PT103715A PT103715B (en) 2007-04-11 2007-04-11 INSTRUMENT FOR PULSE OF DRAINAGE IN CLOSED CONDUCT
PT103715 2007-04-11

Publications (3)

Publication Number Publication Date
WO2008126027A2 WO2008126027A2 (en) 2008-10-23
WO2008126027A3 WO2008126027A3 (en) 2008-12-04
WO2008126027A4 true WO2008126027A4 (en) 2009-04-09

Family

ID=39639540

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2008/051365 Ceased WO2008126027A2 (en) 2007-04-11 2008-04-10 Device for pipe flow pulsation

Country Status (2)

Country Link
PT (1) PT103715B (en)
WO (1) WO2008126027A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8905624B1 (en) * 2009-08-20 2014-12-09 Harold W. Howe Control of vibratory/oscillatory mixers

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3432426A (en) * 1966-02-24 1969-03-11 Laurence D Megel Oil processor apparatus and method of separating oil mixture components
US5577669A (en) * 1995-02-15 1996-11-26 Vujnovic; J. Bradley Apparatus and method for the beneficiation of ore and coal with the aid of ultrasound
DE19816354A1 (en) * 1998-04-03 1999-10-07 Heinrich E Fiedler Liquid mixing process for rapid, homogeneous, efficient and continuous mixing with extremely low power consumption
DE102004025836B3 (en) * 2004-05-24 2005-12-22 Dr. Hielscher Gmbh Method and device for introducing ultrasound into a flowable medium

Also Published As

Publication number Publication date
WO2008126027A3 (en) 2008-12-04
PT103715A (en) 2008-12-31
PT103715B (en) 2009-10-28
WO2008126027A2 (en) 2008-10-23

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