EP0100965B1 - Magnetisierbare Abscheidevorrichtung zur Reinigung von Flüssigkeiten - Google Patents

Magnetisierbare Abscheidevorrichtung zur Reinigung von Flüssigkeiten Download PDF

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Publication number
EP0100965B1
EP0100965B1 EP83107408A EP83107408A EP0100965B1 EP 0100965 B1 EP0100965 B1 EP 0100965B1 EP 83107408 A EP83107408 A EP 83107408A EP 83107408 A EP83107408 A EP 83107408A EP 0100965 B1 EP0100965 B1 EP 0100965B1
Authority
EP
European Patent Office
Prior art keywords
balls
separating device
wire nets
pipe
wire
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.)
Expired
Application number
EP83107408A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0100965A3 (en
EP0100965A2 (de
Inventor
Hans-Günter Dr. Heitmann
Günter Dr. Rupp
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.)
Kraftwerk Union AG
Original Assignee
Kraftwerk Union AG
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 Kraftwerk Union AG filed Critical Kraftwerk Union AG
Priority to AT83107408T priority Critical patent/ATE23119T1/de
Publication of EP0100965A2 publication Critical patent/EP0100965A2/de
Publication of EP0100965A3 publication Critical patent/EP0100965A3/de
Application granted granted Critical
Publication of EP0100965B1 publication Critical patent/EP0100965B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/025—High gradient magnetic separators
    • B03C1/031—Component parts; Auxiliary operations
    • B03C1/033—Component parts; Auxiliary operations characterised by the magnetic circuit
    • B03C1/034—Component parts; Auxiliary operations characterised by the magnetic circuit characterised by the matrix elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D11/00—Feed-water supply not provided for in other main groups
    • F22D11/006—Arrangements of feedwater cleaning with a boiler

Definitions

  • the invention relates to a magnetic separating device for cleaning liquids with a pipe carrying them, which contains balls or wire nets as magnetizable bodies and is surrounded by a coil for magnetizing the bodies.
  • the previously known separating devices either have steel balls as magnetizable bodies, as shown, for example, in DE-PS 1277488, or wire nets, as described in DE-OS 2628095, because the substances to be retained during cleaning are almost different, although the fields of application differ known separators with respect to the medium to be cleaned, namely especially feed water in steam power plants, can be the same. In practice, the known separation devices have not been used together.
  • the invention is based on the object of improving magnetic separating devices so that the maximum possible separation is achieved across all contaminants without sacrificing the robustness known and proven in operation with ball filters.
  • wire mesh separators which are to be used to separate paramagnetic suspended matter of the finest structures, can be mechanically sensitive because wire diameters of a few hundredths of a millimeter are used.
  • the separating device according to the invention differs from a “series connection” of the known separating devices in that it is simpler in construction and in that it is substantially pre-cleaned before the wire mesh filter takes effect. This prevents the wire mesh filters from becoming blocked or even destroyed by coarse particles.
  • the magnetic excitation of the ball filter requires relatively little effort because the deposition of small particles, which is dependent on the field strength, takes place in the downstream wire mesh filter, where the magnetic flux on the balls results in the desired large gradients on the thin wires. All in all, the device according to the invention, with a simple structure, offers significantly higher deposition rates and yet the same operational reliability as the proven ball filters.
  • the diameters of the wires are preferably a few hundredths to a few thousandths of the ball diameter.
  • the mesh size of the wire nets should be at least twice the wire diameter.
  • the same material, in particular feritic, e.g. chrome alloy steel can be used.
  • the wire nets can advantageously be arranged in a separately detachable insert which projects into the tube from the side facing away from the balls. This also makes it easy to replace, which may be desirable in view of special cleaning or excessive wear of the fine wire nets.
  • the insert is advantageously flanged to the lower end. Therefore, the normal flushing flow can run from bottom to top, so that the balls of the ball filter are whirled up during flushing.
  • the new separating device is particularly suitable for cleaning condensates and feed water in steam power plants. It can advantageously be arranged between the turbine condenser and the steam generator, preferably between the low-pressure preheater and the feed water tank, that is to say in the region of higher temperatures.
  • FIG. 1 shows a simplified vertical section through a separating device according to the invention.
  • Fig. 2 is a pipe diagram showing the installation of the separator in a steam power plant, not shown.
  • the separating device 1 comprises a cylindrical, vertically arranged tube 2 made of non-magnetic material, preferably austenite.
  • the pipe 2 has on its upper side a flange 3 or a welding socket, where a line, not shown, is connected for supplying the condensate to be cleaned, which enters the pipe 2 in the direction of arrow 4.
  • a flange 5 or socket enables an outlet line to be connected.
  • a step 6 is created in the flange 5 with a recess that is rectangular in cross section.
  • a cylindrical insert body 7 is fixed there, which engages with a flange 8 in the step 6 and projects up to a sieve plate 9 into the tube 2.
  • the tube 2 is filled with balls 10 made of magnetizable material, for example a chrome alloy steel, over a height H I of approximately 100 mm.
  • the balls 10 generally have a diameter of approximately 6 mm. They are poured loose, so that there is an irregular arrangement.
  • the invention can also be carried out with coordinated ball and tube dimensions in which regular layered arrangements of the balls are possible.
  • the tube 2 is over the height H, and a further area H 2 of a solenoid 11 um give, which has an iron jacket 12 for shielding the magnetic field.
  • the coil 11 is operated with direct current, so that there is a magnetic field strength of at least 1.5.105 Alm.
  • the magnetic excitation also affects the wire nets 13 stacked one above the other over the height H 2 in the interior of the insert body 7, which are arranged between perforated plates 14 of the insert body 7 tightly or at a distance from thin spacer plates.
  • the wire nets 13 have a wire diameter of, for example, 0.1 mm and a mesh size of, for example, 0.2 mm.
  • the mesh size and the wire thickness can also become smaller in the direction of the flow indicated by the arrow 4, for example by half.
  • the separating device 1 is used primarily to clean feed water from thermal power plants, for example nuclear power plants, in the bypass or main flow.
  • the feed water has a temperature of, for example, 110-170 ° C. if the separating device 1 is arranged according to the invention between the low-pressure preheaters and the feed water tank.
  • ferromagnetic impurities in particular magnetite, are deposited in the area of the balls 10.
  • coarser, non-magnetic oxides are also mechanically filtered off, so that 70-90% of the contamination is detected depending on the oxide composition.
  • FIG. 2 shows that the separating device 1 is inserted into the feed water circuit 16 via a shut-off valve 15.
  • a second shut-off valve 18 is located at the outlet from the separating device 1.
  • a flushing line 19 runs parallel to the separating device. It leads with a valve 20 from a branch point 21 located in the flow direction in front of the valve 15 to a connection point 22 between the separating device 1 and the valve 18.
  • An outlet 23 with a shut-off valve 24 is provided between the valve 15 and the separating device 1.
  • the feed water is used to rinse the separating device 1. It is conducted during and / or after demagnetization with a decaying alternating current after the fittings 15 and 18 are closed via the then opened fitting 20 and the line 19 to the lower end of the separating device 1.
  • the feed water used for rinsing therefore flows through the separating device 1 from bottom to top, so that the wire nets 13 are first cleaned.
  • the subsequently flowed through balls 10 are whirled up to a sieve plate 25 inserted into the flange 3 during the rinsing process. The mechanical movement makes it easier to loosen the accumulated impurities. These are then discharged via the valve 24 and the line 23.

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filtration Of Liquid (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Filtering Materials (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Cleaning In General (AREA)
  • Treatment Of Water By Ion Exchange (AREA)
  • Toys (AREA)
  • Treatment Of Liquids With Adsorbents In General (AREA)
EP83107408A 1982-08-11 1983-07-27 Magnetisierbare Abscheidevorrichtung zur Reinigung von Flüssigkeiten Expired EP0100965B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83107408T ATE23119T1 (de) 1982-08-11 1983-07-27 Magnetisierbare abscheidevorrichtung zur reinigung von fluessigkeiten.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3229927 1982-08-11
DE19823229927 DE3229927A1 (de) 1982-08-11 1982-08-11 Magnetische abscheidevorrichtung zur reinigung von fluessigkeiten

Publications (3)

Publication Number Publication Date
EP0100965A2 EP0100965A2 (de) 1984-02-22
EP0100965A3 EP0100965A3 (en) 1984-10-24
EP0100965B1 true EP0100965B1 (de) 1986-10-29

Family

ID=6170635

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83107408A Expired EP0100965B1 (de) 1982-08-11 1983-07-27 Magnetisierbare Abscheidevorrichtung zur Reinigung von Flüssigkeiten

Country Status (8)

Country Link
US (1) US4594160A (enrdf_load_stackoverflow)
EP (1) EP0100965B1 (enrdf_load_stackoverflow)
JP (1) JPS5946111A (enrdf_load_stackoverflow)
AT (1) ATE23119T1 (enrdf_load_stackoverflow)
CA (1) CA1213222A (enrdf_load_stackoverflow)
DE (2) DE3229927A1 (enrdf_load_stackoverflow)
ES (1) ES524839A0 (enrdf_load_stackoverflow)
FI (1) FI71674C (enrdf_load_stackoverflow)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6214914A (ja) * 1985-07-11 1987-01-23 Taiko Kiki Kk 流体濾過方法及びその装置
DE3888795T2 (de) * 1987-11-30 1994-10-20 Nippon Steel Corp Auswaschungsverfahren von magnetisch getrennten Teilchen.
US5024759A (en) * 1988-12-21 1991-06-18 Hydroquip Technologies, Inc. Magnetic treatment of fluids
JPH04121401A (ja) * 1990-09-12 1992-04-22 Hitachi Ltd コンバインドサイクル発電プラント
US5705059A (en) * 1995-02-27 1998-01-06 Miltenyi; Stefan Magnetic separation apparatus
US5766450A (en) * 1996-09-25 1998-06-16 Bethlehem Steel Corporation Apparatus for magnetically filtering wastewaters containing oil-coated mill scale
US7364921B1 (en) 1999-01-06 2008-04-29 University Of Medicine And Dentistry Of New Jersey Method and apparatus for separating biological materials and other substances
US20050239091A1 (en) * 2004-04-23 2005-10-27 Collis Matthew P Extraction of nucleic acids using small diameter magnetically-responsive particles
EP1774334B1 (en) * 2004-08-03 2017-10-04 Becton, Dickinson and Company Use of magnetic material to direct isolation of compounds and fractionation of multipart samples
AU2008273030B2 (en) * 2007-06-29 2013-01-17 Becton, Dickinson And Company Methods for extraction and purification of components of biological samples
JP5943711B2 (ja) * 2012-05-30 2016-07-05 技研パーツ株式会社 強磁性体フィルタ及びこれを備えた不純物除去器具並びに不純物除去方法
US9901931B2 (en) 2014-12-26 2018-02-27 Allnew Chemical Technology Company Magnetic filter
RU199385U1 (ru) * 2020-05-28 2020-08-31 Федеральное государственное бюджетное образовательное учреждение высшего образования "Керченский государственный морской технологический университет" Электромагнитный фильтр

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2430157A (en) * 1939-07-29 1947-11-04 Jr William Byrd Magnetic separator for removing finely divided magnetic material from liquids
US2943739A (en) * 1956-08-14 1960-07-05 Indiana General Corp Magnetic filter
US3004671A (en) * 1959-02-11 1961-10-17 Alfred A Sugalski High temperature analytical filter
DE1277488B (de) * 1967-06-08 1968-09-12 Siemens Ag Einrichtung zur elektromagnetischen Entfernung von Eisenoxyden aus Fluessigkeit
CH543799A (de) * 1971-12-22 1973-10-31 Kraftwerk Union Ag Kernkraftwerk mit Druckwasserreaktor
BE792843A (fr) * 1971-12-22 1973-03-30 Kraftwerk Union Ag Filtre electromagnetique pour oxydes de fer
DE2241237C3 (de) * 1972-08-22 1981-11-05 Kraftwerk Union AG, 4330 Mülheim Speisewasserreinigungsvorrichtung für eine Dampfkraftanlage mit Siedewasserreaktor
JPS5833004B2 (ja) * 1975-11-28 1983-07-16 栗田工業株式会社 デンジフイルタ−
FR2341347A1 (fr) * 1976-02-19 1977-09-16 Commissariat Energie Atomique Procede de decolmatage d'un filtre electromagnetique
DE2628095C3 (de) * 1976-06-23 1981-08-06 Siemens AG, 1000 Berlin und 8000 München Magnetische Abscheidevorrichtung
JPS54154873A (en) * 1978-05-29 1979-12-06 Nippon Atom Ind Group Co Ltd High-gradient magnetism filter
JPS55104617A (en) * 1979-02-02 1980-08-11 British Nuclear Fuels Ltd Method and device for separating particle from liquid
JPS55149615A (en) * 1979-05-11 1980-11-21 Toshiba Corp Magnetic filter
JPS5876115A (ja) * 1981-11-02 1983-05-09 Hitachi Ltd 沸騰水型原子力発電プラントにおける冷却装置を備えた電磁フイルタ

Also Published As

Publication number Publication date
FI71674B (fi) 1986-10-31
FI71674C (fi) 1987-02-09
JPS6344006B2 (enrdf_load_stackoverflow) 1988-09-02
ATE23119T1 (de) 1986-11-15
FI832698L (fi) 1984-02-12
DE3229927A1 (de) 1984-02-16
EP0100965A3 (en) 1984-10-24
FI832698A0 (fi) 1983-07-26
JPS5946111A (ja) 1984-03-15
CA1213222A (en) 1986-10-28
DE3367172D1 (en) 1986-12-04
EP0100965A2 (de) 1984-02-22
ES8404614A1 (es) 1984-05-01
US4594160A (en) 1986-06-10
ES524839A0 (es) 1984-05-01

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