EP0460804A1 - Verfahren zum Mischen einer Flüssigkeit mit Feststoffen und Apparat dafür - Google Patents
Verfahren zum Mischen einer Flüssigkeit mit Feststoffen und Apparat dafür Download PDFInfo
- Publication number
- EP0460804A1 EP0460804A1 EP91303940A EP91303940A EP0460804A1 EP 0460804 A1 EP0460804 A1 EP 0460804A1 EP 91303940 A EP91303940 A EP 91303940A EP 91303940 A EP91303940 A EP 91303940A EP 0460804 A1 EP0460804 A1 EP 0460804A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- liquid
- chamber
- solids
- outlet
- included angle
- 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- Withdrawn
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/50—Mixing liquids with solids
- B01F23/56—Mixing liquids with solids by introducing solids in liquids, e.g. dispersing or dissolving
-
- 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
- B01F25/10—Mixing by creating a vortex flow, e.g. by tangential introduction of flow components
Definitions
- This invention relates to a method and apparatus for mixing a liquid and solids and more particularly but not exclusively to the continuous mixing of a liquid and solids in powder form.
- a method of mixing a liquid and solids comprising feeding the solids into the liquid whilst the liquid is swirling about the surface of a chamber which is converging downwardly towards an outlet, the chamber comprising at least two frusto-conical portions thereof disposed one above the other, the upper said portion having a substantially larger included angle than that of the lower said portion.
- apparatus for the mixing of a liquid and solids by the method of the first aspect of the invention comprising a chamber having a plurality of inlets for the liquid aligned so as to induce swirling of the liquid at an upper end of the chamber and an outlet at the lower end of the chamber, and means for feeding the solids into the upper end of the chamber, the chamber comprising at least two frusto-conical portions thereof disposed one above the other, the upper said portion having a substantially larger included angle than that of the lower said portion.
- the liquid flows in turbulent flow about the portions.
- the included angles of the portions are such as to maintain the tangential component of flow of the liquid thereon above a predetermined velocity.
- the solids may comprise powder having an average particle size between 5 and 500 ⁇ m, for example micronised powder having an average particle size of between 5 and 10 ⁇ m.
- a liquid/solids mixing apparatus 10 is shown and comprises an inlet head assembly 12, and a collecting vessel 14.
- a powder feed 16 is arranged to drop powder through the inlet head assembly 12 into a converging chamber 18.
- the chamber 18 as shown more clearly in Figure 2 has an upper frusto-conical portion 20 joined to a lower frusto-conical portion 22 having an outlet 24 to the collecting vessel 14.
- the collecting vessel 14 discharges through an outlet 28 into a pipeline 30 connected to a pump 32.
- the pump 32 has a product discharge line 34 with a branch line 35 for recycling, when desired, mixed liquid and solids to the chamber 18.
- the inlet head assembly 12 comprises parallel circular flanges 36, 38 respectively having between them a body member 40 defining an annular plenum chamber 42 into which the inlet 26 discharges.
- a plurality of nozzles 44 (ten are shown) from the plenum chamber 42 are aligned substantially tangentially to a cylindrical inlet chamber 46 to connect the plenum chamber 42 thereto.
- the upper portion 20 is joined to the flange 38 below the inlet chamber, and a tube 48 from the powder feed 16 (not shown in Figures 2 and 3) extends through the inlet chamber 46 to discharge into the upper portion 20.
- a vortex breaker 50 as shown in Figure 5 eliminates air flow associated with swirling liquid, the vortex breaker 50 comprising a circular plate 52 having several (three are shown) holes 54 therethrough for liquid flow.
- liquid is injected through the inlet 26 into the plenum chamber 42 and is discharged through the nozzles 44 into the inlet chamber 46 at an angle thereto so as to set up a swirling motion.
- the liquid falls onto the upper portion 20, and because of the relatively large angle defined by the upper portion 20 the downward liquid flow is retarded which ensures that the entire surface of the upper portion 20 is wetted by the liquid.
- the swirling liquid falls into the lower portion 22, and then whilst still swirling falls through the outlet 24 into the collecting vessel 14. Powder fed from the powder feed 16 and through the tube 48 falls onto the wetted surface of the upper portion 20 and the lower portion 22, where it is entrained in the liquid thereon.
- the effect of the angular shape of the upper portion 20 and the lower portion 22 is to overcome frictional effects and maintain the tangential component of flow of the liquid as it falls in the chamber 18. Hence the swirling motion of the liquid is maintained as it falls in the chamber 18 into the vessel 14.
- the mixed liquid/powder is then discharged through the outlet 28 and the pipe 30 to the pump 32.
- the rate of flow of the liquid is arranged to ensure that there are no dry areas on the upper portion 20 and the lower portion 22 on which powder could collect.
- the flow is also arranged to be turbulent in the chamber 18 to enhance entrainment of the powder by the liquid.
- a typical liquid flow velocity of about 6.5 m/sec at a pressure of 3 x 105 Nm2 has been suitable for some applications, in which the upper portion 20 defines an angle from the vertical of 30° (ie 60° included angle) and the lower portion 22 an angle from the vertical of between 7 to 10° (14°-20° included angle).
- the liquid may be organic, for example an organic solvent, or aqueous, for example an acid or alkali solution.
- the powder may have an average particle size between 5 and 500 ⁇ m, for example micronised powder having an average particle size of between 5 and 10 ⁇ m.
- One advantage of the invention is that continuous mixing of the liquid and solids occurs, and the absence of dry areas on the mixing surfaces inhibits the local build-up of solids. If necessary the mixed liquid and solids may be recycled through the apparatus via the branch line 35.
- a conventional screw feeder device (not shown) may be used to feed powder to the powder feed 16.
- Flocculent Dispersal Aid granules @ 0.3 to 1.2kg/hr water @ 195-390l/hr
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9012605 | 1990-06-06 | ||
GB909012605A GB9012605D0 (en) | 1990-06-06 | 1990-06-06 | A method of mixing a liquids and solids and apparatus therefor |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0460804A1 true EP0460804A1 (de) | 1991-12-11 |
Family
ID=10677152
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91303940A Withdrawn EP0460804A1 (de) | 1990-06-06 | 1991-05-01 | Verfahren zum Mischen einer Flüssigkeit mit Feststoffen und Apparat dafür |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0460804A1 (de) |
JP (1) | JPH04227836A (de) |
AU (1) | AU7812591A (de) |
CA (1) | CA2042122A1 (de) |
GB (2) | GB9012605D0 (de) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0959153A2 (de) * | 1998-05-20 | 1999-11-24 | Process Automation International Limited | Vorrichtung zur Elektroplattierung |
WO2000056432A1 (en) * | 1999-03-19 | 2000-09-28 | Termoelettronica S.P.A. | Device for suspending substances in a liquid, and system for preparing liquid-substances mixtures for dyeing using such device |
WO2004096421A1 (en) * | 2003-04-28 | 2004-11-11 | Kcc Group Limited | Mixing device |
WO2005044436A1 (en) * | 2003-11-07 | 2005-05-19 | Dan Cosgrove Ltd. | Improved mixing methods and associated mixing units |
US7175337B2 (en) | 2001-11-23 | 2007-02-13 | Metso Paper, Inc. | Method and apparatus for mixing pulverous material with liquid |
WO2009145874A1 (en) | 2008-05-30 | 2009-12-03 | Millipore Corporation | Container having vortex breaker and system |
EP2436905A1 (de) * | 2009-05-25 | 2012-04-04 | Ito Racing Service Co., Ltd, | Mischer für eine brennstoffzufuhrvorrichtung und brennstoffzufuhrsystem |
RU2461415C1 (ru) * | 2011-03-29 | 2012-09-20 | Владимир Георгиевич Куленко | Способ эмульгирования и устройство для его осуществления |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20090028835A (ko) * | 2006-09-28 | 2009-03-19 | 가부시키가이샤 나카타 코팅 | 선회류 생성장치, 선회류 생성방법, 및 기상 발생장치, 미세기포 발생장치, 유체의 혼합장치, 유체 분사노즐 |
JP4889452B2 (ja) * | 2006-11-13 | 2012-03-07 | 水道機工株式会社 | 粉末混合方法および粉末混合器 |
JP2014221475A (ja) * | 2014-06-12 | 2014-11-27 | ヴァトレコ イーペー アーベー | 渦発生器 |
JP6710553B2 (ja) * | 2015-05-21 | 2020-06-17 | 株式会社堀場製作所 | 試料導入装置 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2653801A (en) * | 1950-10-13 | 1953-09-29 | Stamicarbon | Process and apparatus for dispersing a substance in a liquid |
GB1290486A (de) * | 1968-10-25 | 1972-09-27 | ||
US3741533A (en) * | 1971-10-14 | 1973-06-26 | Dow Chemical Co | Mixing apparatus |
FR2307570A1 (fr) * | 1975-04-17 | 1976-11-12 | Anliker Werner | Procede et dispositif pour melanger intimement deux milieux d'etat physique identique ou different |
US4053142A (en) * | 1976-06-11 | 1977-10-11 | Eastman Kodak Company | Nonmechanical shearing mixer |
EP0050312A2 (de) * | 1980-10-20 | 1982-04-28 | Hoechst Aktiengesellschaft | Vorrichtung und Verfahren zum Dispergieren und Lösen von Polymerpulvern |
GB2130908A (en) * | 1982-11-08 | 1984-06-13 | Conoco Inc | Mixing slurry |
-
1990
- 1990-06-06 GB GB909012605A patent/GB9012605D0/en active Pending
-
1991
- 1991-05-01 EP EP91303940A patent/EP0460804A1/de not_active Withdrawn
- 1991-05-08 CA CA002042122A patent/CA2042122A1/en not_active Abandoned
- 1991-05-09 GB GB9110005A patent/GB2245190A/en not_active Withdrawn
- 1991-06-03 JP JP3131277A patent/JPH04227836A/ja active Pending
- 1991-06-03 AU AU78125/91A patent/AU7812591A/en not_active Abandoned
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2653801A (en) * | 1950-10-13 | 1953-09-29 | Stamicarbon | Process and apparatus for dispersing a substance in a liquid |
GB1290486A (de) * | 1968-10-25 | 1972-09-27 | ||
US3741533A (en) * | 1971-10-14 | 1973-06-26 | Dow Chemical Co | Mixing apparatus |
FR2307570A1 (fr) * | 1975-04-17 | 1976-11-12 | Anliker Werner | Procede et dispositif pour melanger intimement deux milieux d'etat physique identique ou different |
US4053142A (en) * | 1976-06-11 | 1977-10-11 | Eastman Kodak Company | Nonmechanical shearing mixer |
EP0050312A2 (de) * | 1980-10-20 | 1982-04-28 | Hoechst Aktiengesellschaft | Vorrichtung und Verfahren zum Dispergieren und Lösen von Polymerpulvern |
GB2130908A (en) * | 1982-11-08 | 1984-06-13 | Conoco Inc | Mixing slurry |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0959153A2 (de) * | 1998-05-20 | 1999-11-24 | Process Automation International Limited | Vorrichtung zur Elektroplattierung |
EP0959153A3 (de) * | 1998-05-20 | 2000-09-13 | Process Automation International Limited | Vorrichtung zur Elektroplattierung |
WO2000056432A1 (en) * | 1999-03-19 | 2000-09-28 | Termoelettronica S.P.A. | Device for suspending substances in a liquid, and system for preparing liquid-substances mixtures for dyeing using such device |
US7175337B2 (en) | 2001-11-23 | 2007-02-13 | Metso Paper, Inc. | Method and apparatus for mixing pulverous material with liquid |
WO2004096421A1 (en) * | 2003-04-28 | 2004-11-11 | Kcc Group Limited | Mixing device |
WO2005044436A1 (en) * | 2003-11-07 | 2005-05-19 | Dan Cosgrove Ltd. | Improved mixing methods and associated mixing units |
WO2009145874A1 (en) | 2008-05-30 | 2009-12-03 | Millipore Corporation | Container having vortex breaker and system |
US9290729B2 (en) | 2008-05-30 | 2016-03-22 | Emd Millipore Corporation | Container having vortex breaker and system |
EP2436905A1 (de) * | 2009-05-25 | 2012-04-04 | Ito Racing Service Co., Ltd, | Mischer für eine brennstoffzufuhrvorrichtung und brennstoffzufuhrsystem |
EP2436905A4 (de) * | 2009-05-25 | 2014-02-26 | Ito Racing Service Co Ltd | Mischer für eine brennstoffzufuhrvorrichtung und brennstoffzufuhrsystem |
RU2461415C1 (ru) * | 2011-03-29 | 2012-09-20 | Владимир Георгиевич Куленко | Способ эмульгирования и устройство для его осуществления |
Also Published As
Publication number | Publication date |
---|---|
GB9012605D0 (en) | 1990-07-25 |
GB9110005D0 (en) | 1991-07-03 |
GB2245190A (en) | 1992-01-02 |
JPH04227836A (ja) | 1992-08-17 |
AU7812591A (en) | 1991-12-12 |
CA2042122A1 (en) | 1991-12-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GR IT LI LU NL SE |
|
17P | Request for examination filed |
Effective date: 19920424 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: UNITED KINGDOM ATOMIC ENERGY AUTHORITY |
|
17Q | First examination report despatched |
Effective date: 19930727 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19931201 |