EP1644121B2 - Trennteller und zentrifuge mit solchen trenntellern - Google Patents

Trennteller und zentrifuge mit solchen trenntellern Download PDF

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Publication number
EP1644121B2
EP1644121B2 EP04740786.1A EP04740786A EP1644121B2 EP 1644121 B2 EP1644121 B2 EP 1644121B2 EP 04740786 A EP04740786 A EP 04740786A EP 1644121 B2 EP1644121 B2 EP 1644121B2
Authority
EP
European Patent Office
Prior art keywords
separating plates
centrifuge
separator
surface energy
separating
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.)
Not-in-force
Application number
EP04740786.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1644121A1 (de
EP1644121B1 (de
Inventor
Detlef Ullmann
Knud SCHÖNEBERG
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.)
GEA Mechanical Equipment GmbH
Original Assignee
GEA Westfalia Separator GmbH
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34066316&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1644121(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by GEA Westfalia Separator GmbH filed Critical GEA Westfalia Separator GmbH
Publication of EP1644121A1 publication Critical patent/EP1644121A1/de
Application granted granted Critical
Publication of EP1644121B1 publication Critical patent/EP1644121B1/de
Publication of EP1644121B2 publication Critical patent/EP1644121B2/de
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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 relates to a centrifuge according to the preamble of claim 1.
  • Separator plates are commonly made of stainless steel.
  • the achievable selectivity for the separation of a product into two liquid phases, such as water or oil, can be improved.
  • the invention solves this problem by the feature combination of claim 1.
  • the separation efficiency or selectivity is significantly increased or optimized in a structurally simple manner, because by means of the surface energy changing surface treatment, the separation efficiency or selectivity can be precisely adapted to the respective product by specifically the surface energy of the separation plate is changed so that set, for example, at the same time an oil-friendly and a water-friendly surface.
  • the surface treatment also improves the cleanability of the separation plates.
  • the separating plates consist of a first material which, at least in sections, is provided with at least one coating of at least one other material which changes the surface energy compared to the first material. This measure is easy to implement procedurally and offers the advantages mentioned.
  • the separation plates consist of a first material, into which at least in sections a material which changes the surface energy compared to the first material has diffused, e.g. with methods similar to surface treatment methods of semiconductor technology, i. e.g. with the aid of a plasma jet or the like.
  • a material which changes the surface energy compared to the first material has diffused, e.g. with methods similar to surface treatment methods of semiconductor technology, i. e.g. with the aid of a plasma jet or the like.
  • the surface treatment can thus lead to chemical and / or physical bonds between the surface and the applied or introduced material.
  • the separator plates - also for reasons of easier manufacturability - on the top and / or bottom completelyrapnenergyver Snd surface-treated, i. e.g. provided with the coating.
  • each separating plate is preferably subdivided into a plurality of functional regions in order to achieve an optimization of the value phase.
  • the surface treatments, e.g. the coating materials are preferably adapted to the surface energy of the light or heavy phase to be separated.
  • FIG. 1a, b a schematic diagram of the operation of a separation plate according to the invention and a representation of the principle of the invention in comparison to the separation plate according to the prior art using the example of a coating on the separation plate.
  • This figure is purely exemplary. Instead of coatings, the areas of other surface energy could also be generated by other types of surface treatment.
  • FIG. 1 In FIG. 1 are two conical separating plates 1, 2 of a separator plate 3 not shown here for a separator to recognize.
  • the separation plates 1, 2 each have openings 4, which form a climbing channel 5 in interaction.
  • the separating plates 1, 2 are arranged axially spaced from each other, so that in each case a gap 6 is formed between them.
  • Trenntellerver show, for example, the DE 36 07 526 A1 or the DE-OS 19 09 996 .
  • the separating plates 1, 2 are generally made of stainless steel.
  • Surfaces 7, 8 of the separation plates 1, 2 are completely or substantially, ie preferably more than 50 percent of their surface, provided with a coating 9, 10 which changes the surface energy relative to a metal plate.
  • This may be formed, for example, ceramic and / or Teflon-based and / or as a lacquer (eg silicon-containing, silicone lacquer or the like.) And be applied depending on the purpose on the top and / or bottom of the separation plate, there also either completely or each sections.
  • the dispersion When a dispersion flows into the separator plate gap 6, the dispersion separates into the two phases “water” left of the center M of the riser channel 5 and “oil” right of the center M of the riser channel 5.
  • the water contains one more small residual amount of "oil” in the form of drops to be removed in the Trenntellerver 3.
  • the oil droplets on contact stick better than the other phase and coalesce with other drops to form an oil film. Due to the centrifugal force some oil moves to the side of the light phase (oil).
  • the separating plates 1, 2 can be divided into a plurality of functional surfaces or into sections with different coatings (here 9 and 10).
  • the coating 9, 10 divided into different areas, i. the coating is matched in the lighter phase on this, so that in the first place this adheres to the separation plates 1, 2, while it is tuned in the heavy phase on the heavy phase, so that here rather this phase at the separation plates. 1 , 2 clings.
  • Fig. 1b shows in the left figure, the flattened shape of a wider water droplet on an uncoated separation plate and the right figure a corresponding drop of water on a corresponding coated separation plate, which is narrower and significantly higher, but has an equal volume, which favors by the appropriately selected coating of the separation plate becomes.
  • a criterion for adhesions is the surface energy in addition to the surface structure. The treatment of the separation plates by polishing only slightly changes the surface energy. A so-called non-stick layer is not produced by this. A reduction in the adhesions can be explained by the structural change made.
  • the surface energy of the separation plates 1, 2 is in a range of an adhesive layer and is water-friendly (Trennseparator eg water / oil).
  • Each atom or molecule has dispersive forces, which are due to the local and temporary fluctuation of the electron shell density.
  • the non-dispersive (polar) forces are a plus that contributes to the overall interaction due to specific (e.g., functional) groups.
  • the surface energy of the solid for a given liquid is the desired value for Determination of the surface energy.
  • the adhesion can be explained in most cases directly with the surface energies of the two bonding partners.
  • knowledge of the polar portion is necessary for this purpose.
  • complete compatibility in terms of energy is required as well as the presence of as large a polar portion as possible on both sides. It follows that the total surface energies - both the dispersive and especially the polar portions of both phases - should be identical in order to achieve complete wetting of the oil.
  • the lowest possible surface energy is necessary, with a low polar content.

Landscapes

  • Centrifugal Separators (AREA)
EP04740786.1A 2003-07-10 2004-07-08 Trennteller und zentrifuge mit solchen trenntellern Not-in-force EP1644121B2 (de)

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 EP1644121A1 (de) 2006-04-12
EP1644121B1 EP1644121B1 (de) 2008-07-02
EP1644121B2 true EP1644121B2 (de) 2015-07-15

Family

ID=34066316

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04740786.1A Not-in-force EP1644121B2 (de) 2003-07-10 2004-07-08 Trennteller und zentrifuge mit solchen trenntellern

Country Status (7)

Country Link
US (1) US20070066476A1 (ja)
EP (1) EP1644121B2 (ja)
JP (1) JP4856540B2 (ja)
AT (1) ATE399594T1 (ja)
DE (1) DE502004007500D1 (ja)
ES (1) ES2309532T5 (ja)
WO (1) WO2005005050A1 (ja)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
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
WO2013079194A2 (en) * 2011-11-28 2013-06-06 Alfa Laval Corporate Ab Centrifugal separator with anti-fouling properties
EP2944391A1 (en) 2014-05-13 2015-11-18 Alfa Laval Corporate AB Centrifugal separator
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
WO2022159719A1 (en) 2021-01-22 2022-07-28 Lee Tech Llc System and method for improving the corn wet mill and dry mill process

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE30140C1 (ja) † 1911-01-14
US3519199A (en) † 1969-04-03 1970-07-07 Baker Perkins Inc Solids handling centrifugal extractor
US3741467A (en) † 1969-07-24 1973-06-26 Alfa Laval Ab Centrifugal separator
DE3619926A1 (de) † 1985-06-19 1987-01-02 Euro Technical Oilservices Bv Vorrichtung zur behandlung einer verunreinigungen enthaltenden fluessigkeit
EP0320105A1 (en) † 1987-12-07 1989-06-14 Alfa-Laval Separation Ab Centrifuge with flow influencing means
DE10065060A1 (de) † 2000-12-27 2002-07-11 Westfalia Separator Ind Gmbh Vollmantel-Schneckenzentrifuge mit Tellereinsatz
US20030146146A1 (en) † 2000-06-08 2003-08-07 Wilfried Mackel Centrifuge with a sieve system and method for operating the same
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

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE321896B (ja) * 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
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
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

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE30140C1 (ja) † 1911-01-14
US3519199A (en) † 1969-04-03 1970-07-07 Baker Perkins Inc Solids handling centrifugal extractor
US3741467A (en) † 1969-07-24 1973-06-26 Alfa Laval Ab Centrifugal separator
DE3619926A1 (de) † 1985-06-19 1987-01-02 Euro Technical Oilservices Bv Vorrichtung zur behandlung einer verunreinigungen enthaltenden fluessigkeit
EP0320105A1 (en) † 1987-12-07 1989-06-14 Alfa-Laval Separation Ab Centrifuge with flow influencing means
US20030146146A1 (en) † 2000-06-08 2003-08-07 Wilfried Mackel Centrifuge with a sieve system and method for operating the same
DE10065060A1 (de) † 2000-12-27 2002-07-11 Westfalia Separator Ind Gmbh Vollmantel-Schneckenzentrifuge mit Tellereinsatz
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

Also Published As

Publication number Publication date
ES2309532T3 (es) 2008-12-16
JP2009514657A (ja) 2009-04-09
JP4856540B2 (ja) 2012-01-18
EP1644121A1 (de) 2006-04-12
EP1644121B1 (de) 2008-07-02
DE502004007500D1 (de) 2008-08-14
WO2005005050A1 (de) 2005-01-20
ATE399594T1 (de) 2008-07-15
ES2309532T5 (es) 2015-11-26
US20070066476A1 (en) 2007-03-22

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