EP1644121A1 - Zentrifuge mit trenntellerpaket und trennteller - Google Patents
Zentrifuge mit trenntellerpaket und trenntellerInfo
- Publication number
- EP1644121A1 EP1644121A1 EP04740786A EP04740786A EP1644121A1 EP 1644121 A1 EP1644121 A1 EP 1644121A1 EP 04740786 A EP04740786 A EP 04740786A EP 04740786 A EP04740786 A EP 04740786A EP 1644121 A1 EP1644121 A1 EP 1644121A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- centrifuge
- separating
- centrifuge according
- surface energy
- sections
- 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
- 238000000926 separation method Methods 0.000 claims description 19
- 238000000576 coating method Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 17
- 238000004381 surface treatment Methods 0.000 claims description 16
- 239000011248 coating agent Substances 0.000 claims description 15
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 2
- 238000011282 treatment Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 15
- 239000012071 phase Substances 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 230000003993 interaction Effects 0.000 description 7
- 239000007788 liquid Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000009736 wetting Methods 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004922 lacquer Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000002841 Lewis acid Substances 0.000 description 1
- 239000002879 Lewis base Substances 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000007527 lewis bases Chemical class 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010421 standard material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/04—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls
- B04B1/08—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
- B04B7/08—Rotary bowls
- B04B7/12—Inserts, e.g. armouring plates
- B04B7/14—Inserts, e.g. armouring plates for separating walls of conical shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
- B04B2001/2066—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl with additional disc stacks
Definitions
- the invention a centrifuge according to the preamble of claim 1 and a separation plate according to the preamble of claim 11.
- Separator plates are usually made of stainless steel.
- the selectivity that can be achieved when separating a product into two liquid phases such as water or oil is particularly worthy of improvement.
- the invention solves this problem by the subject matter of claim 1.
- the separating plates are subjected, at least in sections, to a surface treatment which changes the surface energy.
- the invention also provides a separating plate for a centrifuge, which is subjected at least in sections to a surface treatment which changes the surface energy.
- Surface energy of the separating plate is changed so that, for example, an oil-friendly and a water-unfriendly surface is simultaneously established len.
- the surface treatment also improves the cleanability of the separating plates.
- the separating plates preferably consist of a first material, which is provided, at least in sections, with at least one coating of at least one other material that changes the surface energy compared to the first material. This measure is simple to implement in terms of process technology and offers the advantages mentioned in claim 1.
- the separating plates consist of a material into which at least in sections a different material that differs the surface energy compared to the first material is diffused, e.g. with processes which are similar to surface treatment processes in semiconductor technology, i.e. e.g. with the help of a plasma jet or the like.
- the advantages of claim 1 also result in an alternative manner.
- the surface treatment can thus lead to chemical and / or physical bonds between the surface and the material applied or introduced.
- the separating plates are preferably - also for reasons of easier production - on the upper and / or lower side completely surface-changing, i.e. e.g. provided with the coating.
- each separation plate is preferably divided into several functional areas in order to optimize the value phase.
- the coating materials can preferably be adapted to the surface energy of the light or heavy phase to be separated.
- FIG. 1 a, b show a basic illustration of the mode of operation of a separating plate according to the invention and a representation of the principle of the invention in comparison to the separating plate according to the prior art using the example of a coating on the separating plate.
- This figure is to be understood purely as an example. Instead of coatings, the areas of other surface energy could also be generated by other types of surface treatment.
- FIG. 1 two conical separating plates 1, 2 of a separating plate package 3, which is otherwise not shown here, for a separator can be seen.
- the separating plates 1, 2 each have openings 4 which, in interaction, have a rising channel
- the separating plates 1, 2 are arranged axially spaced from one another, so that a gap 6 is formed between them.
- Such a separator plate package is shown, for example, in DE 36 07 526 AI or DE-OS 19 09 996.
- the separating plates 1, 2 generally consist of stainless steel.
- the invention differs from the prior art in that the upper and lower (according to FIG. 1) surfaces 7, 8 of the separating plates 1, 2 completely or closed a substantial proportion, ie preferably more than 50 percent of their surface, is provided with a coating 9, 10 which changes the surface energy relative to a metal plate.
- a coating 9, 10 which changes the surface energy relative to a metal plate.
- This can, for example, be ceramic and / or based on Teflon and / or as a lacquer (eg containing silicon, silicon lacquer or the like) and, depending on the intended use, on the top and / or bottom of the
- Separating plate can be applied, either there either completely or in sections.
- the dispersion When a dispersion flows into the separation plate gap 6, the dispersion separates into the two phases “water” to the left of the center M of the riser 5 and “oil” to the right of the center M of the riser 5.
- the water still contains a small amount of “oil” in the form of drops that are to be removed in the separating plate pack 3.
- the oil drops On the oil-friendly separating plate surface, the oil drops remain in contact better than the other phase and adhere and coalesce with other drops and form an oil film. Due to the centrifugal force, some oil migrates to the light phase (oil ).
- the separating plates 1, 2 can be divided into several functional surfaces or into sections with different coatings (here 9 and 10).
- the coating 9, 10 is therefore preferably divided into different areas, ie the coating is sprayed onto it in the area of the lighter phase, so that it primarily adheres to the separating plates 1, 2 while it is in the area of the heavy one Phase is matched to the heavy phase, so that here rather this phase adheres to the separating plates 1, 2. It is not only possible to adapt the coating or the surface energy of the coating of the separating plates 1, 2 in the different areas to the different phases to be separated from one another, but it is also possible to adapt the surface energy to the material to be processed, so that the coating, for example for the separation of a water-oil mixture, must be chosen differently than for the separation of other liquids.
- Advantages include the reduction in wear that can be achieved with this, as well as lower coefficients of friction and increased corrosion resistance.
- Fig. 1 b shows in the left figure the flattened shape of a wider drop of water on an uncoated separation plate and the right figure shows a corresponding drop of water on a correspondingly coated separation plate, which is narrower and significantly higher, but has the same volume, which is due to the chosen Coating the separation plate is favored.
- a criterion for adhesion is the surface energy.
- the treatment of the separating plates by polishing changes the surface energy only slightly. This does not create a so-called non-stick effect. A reduction in the buildup can be explained by the structural change made.
- the surface energy of the separating plates 1, 2 lies in an area of an adhesive layer and is water-friendly (separating separator e.g. water / oil).
- the free interface energy is additively composed of the dispersive and non-dispersive (polar) energies or interactions.
- Every atom or molecule has dispersive forces that arise due to the local and temporary fluctuation of the electron shell density.
- the non-dispersive (polar) forces are a plus, which contributes to the overall interaction due to special (e.g. functional) groups.
- the surface energy of the solid is the desired value for a given liquid Determination of the surface energy.
- the adhesion can be explained directly with the surface energies of the two adhesive partners. Knowledge of the polar component is particularly necessary for this.
- a simple criterion for optimal adhesion is perfect compatibility in terms of energy as well as the existence the largest possible polar portion on both sides is required. From this it follows that the total surface energies - both the dispersive and especially the polar components of both phases - should be identical in order to achieve complete wetting of the oil. The lowest possible surface energy, with a low polar fraction, is necessary for adhesion.
Landscapes
- Centrifugal Separators (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10331424 | 2003-07-10 | ||
DE10358239 | 2003-12-12 | ||
PCT/EP2004/007480 WO2005005050A1 (de) | 2003-07-10 | 2004-07-08 | Zentrifuge mit trenntellerpaket und trennteller |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1644121A1 true EP1644121A1 (de) | 2006-04-12 |
EP1644121B1 EP1644121B1 (de) | 2008-07-02 |
EP1644121B2 EP1644121B2 (de) | 2015-07-15 |
Family
ID=34066316
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04740786.1A Expired - Lifetime EP1644121B2 (de) | 2003-07-10 | 2004-07-08 | Trennteller und zentrifuge mit solchen trenntellern |
Country Status (7)
Country | Link |
---|---|
US (1) | US20070066476A1 (de) |
EP (1) | EP1644121B2 (de) |
JP (1) | JP4856540B2 (de) |
AT (1) | ATE399594T1 (de) |
DE (1) | DE502004007500D1 (de) |
ES (1) | ES2309532T5 (de) |
WO (1) | WO2005005050A1 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008051867A1 (de) | 2007-10-17 | 2009-04-23 | Gea Westfalia Separator Gmbh | Zentrifuge und Trennteller |
DE102011050046A1 (de) | 2011-05-02 | 2012-11-08 | Gea Mechanical Equipment Gmbh | Zentrifuge |
US20140371049A1 (en) * | 2011-11-28 | 2014-12-18 | Alfa Laval Corporate Ab | Centrifugal separator with anti-fouling properties |
EP2944391A1 (de) | 2014-05-13 | 2015-11-18 | Alfa Laval Corporate AB | Zentrifugalabscheider |
US11680278B2 (en) | 2014-08-29 | 2023-06-20 | Lee Tech Llc | Yeast stage tank incorporated fermentation system and method |
US11427839B2 (en) | 2014-08-29 | 2022-08-30 | Lee Tech Llc | Yeast stage tank incorporated fermentation system and method |
CN105127013B (zh) * | 2015-08-13 | 2018-08-03 | 南京中船绿洲机器有限公司 | 一种双锥度碟片式分离机 |
US11166478B2 (en) | 2016-06-20 | 2021-11-09 | Lee Tech Llc | Method of making animal feeds from whole stillage |
WO2019079491A1 (en) * | 2017-10-20 | 2019-04-25 | Lee Tech Llc | PROCESS AND SYSTEM FOR PRODUCING SYRUP HAVING THE HIGHEST CONCENTRATION USING A DRY GRINDING PROCESS |
US11623966B2 (en) | 2021-01-22 | 2023-04-11 | Lee Tech Llc | System and method for improving the corn wet mill and dry mill process |
WO2023244840A1 (en) | 2022-06-17 | 2023-12-21 | Lee Tech Llc | System for and method of producing pure starch slurry and alcohol by using a process combining wet corn milling and a dry corn milling processes |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE30140C1 (de) † | 1911-01-14 | |||
SE321896B (de) * | 1968-02-29 | 1970-03-16 | Alfa Laval Ab | |
US3594011A (en) * | 1968-08-04 | 1971-07-20 | Federal Mogul Corp | Composite wear-resistant articles such as face seals |
US3519199A (en) † | 1969-04-03 | 1970-07-07 | Baker Perkins Inc | Solids handling centrifugal extractor |
DE2033646A1 (de) † | 1969-07-24 | 1971-03-11 | Alfa Laval AB Tumba (Schweden) | Anordnung in einem Zentrifugal scheider |
NL8501767A (nl) * | 1985-06-19 | 1987-01-16 | Euro Technical Oilservices Bv | Inrichting voor het behandelen van een verontreinigingen bevattende vloeistof. |
SE457612B (sv) † | 1987-12-07 | 1989-01-16 | Alfa Laval Separation Ab | Centrifugalseparator foer separering av ett aemne dispergerat i en vaetska |
JP2704523B2 (ja) * | 1988-04-21 | 1998-01-26 | 月島機械株式会社 | 遠心分離機 |
US5392982A (en) * | 1988-11-29 | 1995-02-28 | Li; Chou H. | Ceramic bonding method |
EP0444271A3 (en) * | 1990-02-24 | 1992-03-11 | Westfalia Separator Ag | Disc for a centrifugal separator |
US6338906B1 (en) * | 1992-09-17 | 2002-01-15 | Coorstek, Inc. | Metal-infiltrated ceramic seal |
DE10027958A1 (de) † | 2000-06-08 | 2002-01-10 | Westfalia Separator Food Tec G | Zentrifuge mit Siebanordnung und Verfahren zu deren Betrieb |
DE10065060B4 (de) † | 2000-12-27 | 2004-07-08 | Westfalia Separator Ag | Vollmantel-Schneckenzentrifuge mit Tellereinsatz |
FR2838752B1 (fr) * | 2002-04-22 | 2005-02-25 | Snecma Moteurs | Procede de formation d'un revetement ceramique sur un substrat par depot physique en phase vapeur sous faisceau d'electrons |
US6946096B2 (en) † | 2002-05-03 | 2005-09-20 | Honeywell International, Inc. | Use of powder metal sintering/diffusion bonding to enable applying silicon carbide or rhenium alloys to face seal rotors |
-
2004
- 2004-07-08 ES ES04740786.1T patent/ES2309532T5/es not_active Expired - Lifetime
- 2004-07-08 US US10/563,654 patent/US20070066476A1/en not_active Abandoned
- 2004-07-08 AT AT04740786T patent/ATE399594T1/de not_active IP Right Cessation
- 2004-07-08 JP JP2006518140A patent/JP4856540B2/ja not_active Expired - Fee Related
- 2004-07-08 EP EP04740786.1A patent/EP1644121B2/de not_active Expired - Lifetime
- 2004-07-08 DE DE502004007500T patent/DE502004007500D1/de not_active Expired - Lifetime
- 2004-07-08 WO PCT/EP2004/007480 patent/WO2005005050A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO2005005050A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE502004007500D1 (de) | 2008-08-14 |
EP1644121B2 (de) | 2015-07-15 |
JP2009514657A (ja) | 2009-04-09 |
WO2005005050A1 (de) | 2005-01-20 |
ATE399594T1 (de) | 2008-07-15 |
ES2309532T5 (es) | 2015-11-26 |
ES2309532T3 (es) | 2008-12-16 |
EP1644121B1 (de) | 2008-07-02 |
US20070066476A1 (en) | 2007-03-22 |
JP4856540B2 (ja) | 2012-01-18 |
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