EP1497020A1 - Verfahren und vorrichtung zum homogenisieren von emulsionen - Google Patents
Verfahren und vorrichtung zum homogenisieren von emulsionenInfo
- Publication number
- EP1497020A1 EP1497020A1 EP03727282A EP03727282A EP1497020A1 EP 1497020 A1 EP1497020 A1 EP 1497020A1 EP 03727282 A EP03727282 A EP 03727282A EP 03727282 A EP03727282 A EP 03727282A EP 1497020 A1 EP1497020 A1 EP 1497020A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shear forces
- generated
- flow
- milk
- sharp
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000000839 emulsion Substances 0.000 title claims abstract description 20
- 239000008267 milk Substances 0.000 claims abstract description 16
- 210000004080 milk Anatomy 0.000 claims abstract description 16
- 235000013336 milk Nutrition 0.000 claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 238000010008 shearing Methods 0.000 abstract 1
- 238000000265 homogenisation Methods 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 230000001609 comparable effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000009760 electrical discharge machining Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000608 laser ablation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000005459 micromachining Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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
- B01F25/40—Static mixers
- B01F25/45—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads
-
- 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
- B01F23/40—Mixing liquids with liquids; Emulsifying
- B01F23/41—Emulsifying
-
- 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
Definitions
- the invention relates to a method for homogenizing emulsions, in particular milk, with which it is possible to comminute the fat droplets by means of a homogenizer equipped with special microstructures at a substantially lower operating pressure than was previously possible.
- Homogenizing is an essential process step for milk processing. In order to obtain an emulsion that is stable for days or weeks, the fat droplets contained in the milk must be small and evenly distributed. In addition, this fine distribution creates a full-bodied taste.
- the amount of energy that is used to crush the fat droplets is three orders of magnitude higher than the amount of energy that is theoretically necessary to increase the surface area of the fat phase. Assuming a uniform energy input over the volume, the actual energy input is still two orders of magnitude above the theoretical minimum. Despite the continuous improvement of the process, the majority of the energy input into the milk only causes warming.
- German patent application 197 00 810 describes a method for homogenizing milk, in which the milk is conveyed through a single-stage or multi-stage nozzle dispersing device. Shear forces that caused by multiple flow deflections in narrow micro structures or by holes with a diameter of less than 1 ⁇ m are not used. Rather, homogenization takes place there with nozzle diameters of more than 100 ⁇ m through the nozzle flow, but not through the crushing of the droplets.
- microtechnology has already been used successfully in many areas of industry. Due to the small structural dimensions, high heat transfer rates, fast mixing processes and very precise flow control are achieved. In the area of the food industry, the special advantages of microtechnology for process improvements, in particular for improving fluid processes, have so far hardly been used.
- the flow obstacles which are designed as microstructures and offset against one another, preferably have the shape of rhombuses, triangles, sickles or other sharp-edged structures.
- Corrosion-resistant steels but also ceramic materials can be used as materials.
- Production can be carried out using standard microtechnology manufacturing processes such as B. LIGA technology, deep etching, spark erosion, laser ablation or mechanical micromachining.
- the structures can be connected in a form-fitting, material-locking or force-fitting manner, for example by diffusion soldering, diffusion welding, electron beam welding, gluing or pressing.
- Another method to produce structures with fine flow obstacles inexpensively is to thin metal wires with another metal layer, for. B. electroplated a silver layer, then pressed in parallel and fixed on a carrier plate, for example by welding. The outer metal layer is then removed again by an etching solution, so that the desired structure is created.
- the cleaning of the components is of particular importance, especially in food technology.
- Chemical cleaning agents can be used for the homogenizer according to the invention.
- Another option is a construction that provides mechanical cleaning.
- the microstructured plate is inserted into the flow space through a plate with openings in the form of the flow obstacles, so that cleaning can be carried out by lowering the microstructures.
- Shear forces are offset against each other.
- 2 shows the geometric dimensions (a), (b), ( ⁇ ) which are important for the generation of optimal shear forces and which can be varied in accordance with the properties of the emulsion to be homogenized and the fat droplet size to be achieved. Further variation possibilities result from the height of the micro structures and from the number of rows of the micro structures arranged one behind the other.
- FIG. 3 shows the structure of a homogenizer according to the invention containing microstructures.
- One or more microstructured plates are stacked one above the other in the homogenizing unit, in which the rhombic cutouts on the edge show sharp-edged elevations which are responsible for the formation of considerable shear forces.
- the emulsion flows towards the stack of plates and how it leaves it after homogenization.
- the raw emulsion e.g. the milk is pressed through the homogenizing unit by means of a pump and can then be processed further.
- Fig. 4 shows a sharp-edged micro structure, which consists of a layer of
- Metal wires have been produced, which are coated with a second metal and after parallel pressing are fixed on one or between several carrier plates. The second metal was then removed. For this method, metal wires with an advantageous
- the shear forces required to produce evenly small droplets of fat in an emulsion can also be generated by differently designed microstructures.
- a perforated plate has proven particularly suitable for this proven, the holes have a diameter of less than 1 micron.
- This hole diameter is particularly suitable for the homogenization of milk, in which the fat droplets in front of the emulsion have a diameter of 3 to 25 ⁇ m and should only have a uniform droplet size of less than 1 ⁇ m after passage through the homogenizer.
- a comparable effect is also achieved through microchannels, the narrowest cross-section of which is smaller than 1 ⁇ m.
- femtosecond lasers are particularly interesting for the production of the perforated plate which can be used according to the invention for homogenizing emulsions, since when processing materials with high thermal conductivity and comparatively low melting temperature (for example with metals), the melt build-up which generally occurs when using conventional laser beam sources can significantly reduce the achievable precision, do not occur. Even transparent materials such as organic materials can be processed with very little damage using these femtosecond lasers.
- Such a perforated plate is preferably made of metal or glass.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Colloid Chemistry (AREA)
- Dairy Products (AREA)
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10216947A DE10216947B4 (de) | 2002-04-17 | 2002-04-17 | Verfahren zum Homogenisieren von Emulsionen |
| DE10216947 | 2002-04-17 | ||
| PCT/EP2003/003657 WO2003086601A1 (de) | 2002-04-17 | 2003-04-09 | Verfahren und vorrichtung zum homogenisieren von emulsionen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1497020A1 true EP1497020A1 (de) | 2005-01-19 |
| EP1497020B1 EP1497020B1 (de) | 2007-08-15 |
Family
ID=28798475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03727282A Expired - Lifetime EP1497020B1 (de) | 2002-04-17 | 2003-04-09 | Verfahren und vorrichtung zum homogenisieren von emulsionen |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20050233040A1 (de) |
| EP (1) | EP1497020B1 (de) |
| AT (1) | ATE369907T1 (de) |
| AU (1) | AU2003233959A1 (de) |
| DE (2) | DE10216947B4 (de) |
| WO (1) | WO2003086601A1 (de) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7118920B2 (en) * | 2002-10-22 | 2006-10-10 | Battelle Memorial Institute | Multiphasic microchannel reactions |
| US7485671B2 (en) * | 2003-05-16 | 2009-02-03 | Velocys, Inc. | Process for forming an emulsion using microchannel process technology |
| EP1633463B1 (de) * | 2003-05-16 | 2007-10-24 | Velocys Inc. | Verfahren zur erzeugung einer emulsion durch verwendung einer mikrokanalverfahrentechnologie |
| EP1804964A1 (de) | 2004-10-01 | 2007-07-11 | Velocys Inc. | Mehrphasiges mischverfahren mit mikrokanalverarbeitungstechnologie |
| JP5704786B2 (ja) * | 2004-11-16 | 2015-04-22 | ヴェロシス,インク. | マイクロチャネル技術を用いる多相反応プロセス |
| JP2016514047A (ja) * | 2013-03-06 | 2016-05-19 | プレジデント アンド フェローズ オブ ハーバード カレッジ | 比較的単分散の液滴を形成するためのデバイスおよび方法 |
| EP2798988B1 (de) * | 2013-04-29 | 2016-05-18 | Melitta Professional Coffee Solutions GmbH & Co., KG | Vorrichtung zum Erzeugen eines Milchschaumes |
| DE202016105311U1 (de) | 2016-09-23 | 2018-01-09 | Reinz-Dichtungs-Gmbh | Strömungsplatte für einen Befeuchter |
| DE202016105307U1 (de) | 2016-09-23 | 2018-01-09 | Reinz-Dichtungs-Gmbh | Strömungsplatte für einen Befeuchter |
| DE202016105309U1 (de) | 2016-09-23 | 2018-01-09 | Reinz-Dichtungs-Gmbh | Befeuchter |
| US20190321791A1 (en) * | 2018-04-19 | 2019-10-24 | President And Fellows Of Harvard College | Apparatus and method for forming emulsions |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US368871A (en) * | 1887-08-23 | Double-shovel plow | ||
| US2132854A (en) * | 1937-07-16 | 1938-10-11 | John Duval Dodge | Emulsifier |
| DE3709278A1 (de) * | 1987-03-20 | 1988-09-29 | Kernforschungsz Karlsruhe | Verfahren zur herstellung von feinstrukturkoerpern |
| NL1001380C2 (nl) * | 1995-10-09 | 1997-04-11 | Fuji Photo Film Bv | Methode voor het dispergeren van een geëmulgeerd materiaal van het olie-druppeltype in een vloeistoftoevoersysteem en bekledingsmethode waarbij van een dergelijke dispergeermethode gebruik wordt gemaakt. |
| DE19541266A1 (de) * | 1995-11-06 | 1997-05-07 | Bayer Ag | Verfahren und Vorrichtung zur Durchführung chemischer Reaktionen mittels eines Mikrostruktur-Lamellenmischers |
| DE19700810A1 (de) * | 1997-01-13 | 1998-07-16 | Bayer Ag | Verfahren und Vorrichtung zum Homogenisieren von Milch |
| US6208458B1 (en) * | 1997-03-21 | 2001-03-27 | Imra America, Inc. | Quasi-phase-matched parametric chirped pulse amplification systems |
| US6368871B1 (en) * | 1997-08-13 | 2002-04-09 | Cepheid | Non-planar microstructures for manipulation of fluid samples |
| DK1179585T3 (da) * | 1997-12-24 | 2008-11-10 | Cepheid | Indretning og fremgangsmåde til lysis |
| DE19927556C2 (de) * | 1999-06-16 | 2003-05-08 | Inst Mikrotechnik Mainz Gmbh | Statischer Mikromischer und Verfahren zum statischen Mischen zweier oder mehrerer Edukte |
| DE10059430A1 (de) * | 2000-11-30 | 2002-06-06 | Cognis Deutschland Gmbh | Feinteilige Emulsionen |
-
2002
- 2002-04-17 DE DE10216947A patent/DE10216947B4/de not_active Withdrawn - After Issue
-
2003
- 2003-04-09 EP EP03727282A patent/EP1497020B1/de not_active Expired - Lifetime
- 2003-04-09 US US10/513,845 patent/US20050233040A1/en not_active Abandoned
- 2003-04-09 AT AT03727282T patent/ATE369907T1/de active
- 2003-04-09 WO PCT/EP2003/003657 patent/WO2003086601A1/de not_active Ceased
- 2003-04-09 AU AU2003233959A patent/AU2003233959A1/en not_active Abandoned
- 2003-04-09 DE DE50307961T patent/DE50307961D1/de not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03086601A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE50307961D1 (de) | 2007-09-27 |
| AU2003233959A1 (en) | 2003-10-27 |
| DE10216947B4 (de) | 2007-10-04 |
| WO2003086601A1 (de) | 2003-10-23 |
| EP1497020B1 (de) | 2007-08-15 |
| US20050233040A1 (en) | 2005-10-20 |
| ATE369907T1 (de) | 2007-09-15 |
| DE10216947A1 (de) | 2003-11-06 |
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