EP0787833B1 - Schienenanordnung für Elektrolysezellen - Google Patents
Schienenanordnung für Elektrolysezellen Download PDFInfo
- Publication number
- EP0787833B1 EP0787833B1 EP96810051A EP96810051A EP0787833B1 EP 0787833 B1 EP0787833 B1 EP 0787833B1 EP 96810051 A EP96810051 A EP 96810051A EP 96810051 A EP96810051 A EP 96810051A EP 0787833 B1 EP0787833 B1 EP 0787833B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cell
- bar
- longitudinal
- bus bars
- cathode
- 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 - Lifetime
Links
- 239000004020 conductor Substances 0.000 title description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 1
- 210000004027 cell Anatomy 0.000 description 41
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 238000005868 electrolysis reaction Methods 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 7
- 238000009826 distribution Methods 0.000 description 6
- 229910001338 liquidmetal Inorganic materials 0.000 description 6
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 6
- 230000005291 magnetic effect Effects 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 239000003102 growth factor Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910003481 amorphous carbon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 229910001610 cryolite Inorganic materials 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000002001 electrolyte material Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/16—Electric current supply devices, e.g. bus bars
Definitions
- the invention relates to a rail arrangement according to the preamble of claim 1.
- the electrolytic cell In normal operation, the electrolytic cell is usually used operated periodically, even if there is no anode effect, by cracking the crust and adding alumina.
- the cathode bars are in the carbon bottom of the electrolytic cell embedded, the ends of which are the electrolysis pan on both Reach through the long sides. These iron bars collect the Electrolysis current, which is arranged outside the cell Busbars, risers, anode bars or trusses and the anode rods to the carbon anodes the next cell flows. Through the ohmic resistance from the cathode bars to the anodes of the next cell Energy losses are caused in the order of magnitude of up to 1 kWh / kg of aluminum produced. It is therefore Tried repeatedly the arrangement of the busbars to optimize in terms of ohmic resistance.
- the vertical components formed must also be used of magnetic induction, which - together with the horizontal current density components - in liquid metal obtained by the reduction process Generate force field.
- the current flow from cell to cell is as follows:
- the electrical direct current emerges in the carbon bottom of the cell arranged cathode bars.
- the ends of the cathode bars are connected to the busbars via busbars connected, which is parallel to the electrolytic cell row run. From these along the long sides of the Conducting busbars, the current is passed over others flexible straps and via risers to the two ends the traverse of the next cell. Varies depending on the type of furnace the current distribution between the closer and the more distant End of the traverse, based on the general Current direction of the cell row, from 100/0% to 50/50%.
- Means The vertical anode rods on the crossbar are locks attached, which carry the carbon anodes and with feed electrical current.
- GB-A-2 001 344 is a rail guide at the beginning mentioned type disclosed.
- the inventor has the Task given a rail arrangement of the aforementioned Provide a way that is as extensive as possible Compensation for the different current flows generated electromagnetic force fields can be achieved can.
- a rail arrangement with the features of claim 1 leads to the achievement of the object according to the invention.
- Electrolytic cells are suitable for arrangements with current strengths up to 170 KA.
- the partial current rails are under each cell in the longitudinal center and vertically arranged to the longitudinal axis and the busbar runs in the longitudinal axis of the cell.
- the partial conductor rails expediently run underneath each cell between support beams of the cathode tub, where the busbar crosses the support beams.
- the order from partial busbars and busbars is preferred arranged approximately halfway up the height of the support beams.
- An electrolytic cell 10 has a steel trough according to FIG. 1 12, which is lined with thermal insulation 14 is and receives a coal floor 16.
- a coal floor 16 In the coal floor 16 are Embedded cathode bars 18, the ends of which the steel pan 12th reach through on both long sides.
- the cathode bars 18 are connected to busbars 22 via flexible current strips 20.
- the steel trough 12 is at a distance h from the floor 26 arranged and rests on steel beams 24th
- Fig. 2 which the inventive arrangement for a number of electrolytic cells 10 with a nominal current of 140 KA.
- the general direction of electrical DC is denoted by I.
- the in Fig. 2 in Numbers in brackets refer to the number of Cathode bars, each to individual busbars are merged.
- the current distribution within one With the same cell type, the cell depends on the current strength. Because there is no linear relationship between current and current distribution exists, the current distribution, i.e. the exact number of individual busbars merged cathode bar units, for a specific Current density based on magnetohydrodynamic models calculated.
- the electrolytic cell 10 n is equipped with 20 cathode bar ends on each longitudinal side of the cell, of which 26 cathode bar units feed the upstream end of the anode bar or the traverse 28 of the subsequent cell 10 n + 1 and 14 units the downstream end.
- 3 cathode bar units each from each long side of the cell 10 n are combined to form a partial busbar A, B and are guided along the longitudinal center m of the subsequent cell 10 n + 1 below the cell to its longitudinal axis x.
- the two partial busbars A, B unite to form a busbar C, which leads along the longitudinal axis x to the downstream end of the traverse 28.
- the two partial busbars A, B run between the Steel beams 24.
- the busbar C crosses the Steel beams 24 in openings 25 provided therefor from the partial busbars A, B and the busbar C existing arrangement, which has the shape of a "T" itself at a height a above the floor 26, which is approximately the half height h corresponds to the steel beam 24.
- the magnetic influence of the busbars A, B and the busbar C is increased by the proximity of the electrolysis metal and by the ferromagnetic environment present as a result of the steel trough 12 and the steel beam 24.
- the small distance between the busbars A, B and the busbar C to the electrolysis metal allows the current to be reduced by dividing the busbars into a "T”. Magnetohydrodynamic calculations in the present case lead to the results summarized in the table below.
- the growth factor is optimized for the magnetically Rail guide in the form of a "T” opposite the Rail guidance without "T” reduced by a factor of 3. Out of it there is a significant improvement in the stability of the Electrolytic cell.
Description
- Die erste Strömungskomponente, welche im Prinzip eine Zirkulationsbewegung entlang der inneren Zellenwände ist, hat besonders schädliche Auswirkungen in bezug auf die Stabilität der Elektrolysezelle. Diese erste Komponente entsteht durch den Einfluss der benachbarten Elektrolysezellenreihe, welche den elektrischen Strom zum Gleichrichter zurückführt. Der Drehsinn der Rotation hängt davon ab, ob die benachbarten Zellenreihe links oder rechts, bezogen auf die allgemeine Richtung des Gleichstromes, von der Zelle liegt.
- Die zweite Strömungskomponente besteht darin, dass in jeder Zellenhälfte (in bezug auf die Längsrichtung) je eine Zirkularströmung entsteht, wobei die Strömungsrichtungen gegenläufig sind. Diese Rotationsart hängt von der Stromverteilung zwischen den Steigleitungen ab.
- Die dritte Strömungskomponente schliesslich besteht aus vier in den Zellenquadranten ausgebildeten Rotationen, wobei die diagonal gegenüberliegenden Rotationsrichtungen gleich sind. Diese Rotationen entstehen durch die ungleiche Stromverteilung in den Stromschienen und der Traverse von einem Zellenende zum anderen.
- Fig. 1 einen Querschnitt durch eine Elektrolysezelle;
- Fig. 2 das Prinzip der magnetischen Kompensation.
Stationäre Analyse | Stabilitätsanalyse | ||||
Schienenführung | Stromstärke | Vmax | Vmetal | Δh | Zuwachsfaktor |
(KA) | (cm/s) | (cm/s) | (mm) | (1/S) .10-2 | |
ohne "T" | 140 | 28 | 7.8 | 37 | 1.5 |
mit "T" | 140 | 20 | 6.6 | 28 | .44 |
Vmax = maximale Geschwindigkeit im flüssigen Metall | |||||
Vmetal = mittlere quadratische Geschwindigkeit im flüssigen Metall | |||||
Δh = Niveauunterschied der flüssigen Metalloberfläche |
Claims (4)
- Schienenanordnung zum Leiten des elektrischen Gleichstromes von den Kathodenbarrenenden einer längsgestellten Elektrolysezelle, insbesondere zur Herstellung von Aluminium, über Stromschienen zu den Traversenenden der Folgezelle, wobei eine Stromschiene unter der Zelle in deren Längsrichtung geführt ist,
dadurch gekennzeichnet, dass ein Teil der Kathodenbarrenenden an jeder Längsseite der Zelle (10n) zu je einer Teilstromschiene (A, B) zusammengefasst ist, wobei die Teilstromschienen von den Längsseiten der Folgezelle (10n+1) quer zu deren Längsachse (x) unter die Zelle geführt und unter der Zelle zu einer Sammelstromschiene (C) zusammengeführt sind und die Sammelstromschiene unter der Zelle in deren Längsrichtung zum stromab liegenden Ende der Traverse (28) geführt ist. - Schienenanordnung nach Anspruch 1, dadurch gekennzeichnet, dass die Teilstromschienen (A,B) unter jeder Zelle (10) in deren Längsmitte (m) und senkrecht zu deren Längsachse (x) angeordnet sind und die Sammelstromschiene (C) in der Längsachse (x) der Zelle verläuft.
- Schienenanordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Teilstromschienen (A,B) unter jeder Zelle (10) zwischen Stützträgern (24) der Kathodenwanne (12) verlaufen und die Sammelstromschiene (C) die Stützträger (24) quert.
- Schienenanordnung nach Anspruch 3, dadurch gekennzeichnet, dass die Teilstromschienen (A,B) und die Sammelstromschiene (C) unter jeder Zelle (10) etwa in halber Höhe (a) zur Höhe (h) der Stützträger (24) angeordnet sind.
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96810051A EP0787833B1 (de) | 1996-01-26 | 1996-01-26 | Schienenanordnung für Elektrolysezellen |
DE59607944T DE59607944D1 (de) | 1996-01-26 | 1996-01-26 | Schienenanordnung für Elektrolysezellen |
US08/773,762 US5830335A (en) | 1996-01-26 | 1996-12-24 | Busbar arrangement for electrolytic cells |
AU76455/96A AU693391B2 (en) | 1996-01-26 | 1996-12-24 | Busbar arrangement for electrolytic cells |
RU96124395A RU2118410C1 (ru) | 1996-01-26 | 1996-12-25 | Система ошиновки электролизера |
CA002194832A CA2194832A1 (en) | 1996-01-26 | 1997-01-10 | Busbar arrangement for electrolytic cells |
ZA97246A ZA97246B (en) | 1996-01-26 | 1997-01-13 | Busbar arrangement for electrolytic cells |
IS4414A IS4414A (is) | 1996-01-26 | 1997-01-16 | Fyrirkomulag teina fyrir rafgreiningarker |
SK91-97A SK282829B6 (sk) | 1996-01-26 | 1997-01-21 | Prípojnica na vedenie jednosmerného elektrického prúdu |
NO19970328A NO317172B1 (no) | 1996-01-26 | 1997-01-24 | Skinneanordning for elektrolyseceller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96810051A EP0787833B1 (de) | 1996-01-26 | 1996-01-26 | Schienenanordnung für Elektrolysezellen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0787833A1 EP0787833A1 (de) | 1997-08-06 |
EP0787833B1 true EP0787833B1 (de) | 2001-10-17 |
Family
ID=8225538
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96810051A Expired - Lifetime EP0787833B1 (de) | 1996-01-26 | 1996-01-26 | Schienenanordnung für Elektrolysezellen |
Country Status (10)
Country | Link |
---|---|
US (1) | US5830335A (de) |
EP (1) | EP0787833B1 (de) |
AU (1) | AU693391B2 (de) |
CA (1) | CA2194832A1 (de) |
DE (1) | DE59607944D1 (de) |
IS (1) | IS4414A (de) |
NO (1) | NO317172B1 (de) |
RU (1) | RU2118410C1 (de) |
SK (1) | SK282829B6 (de) |
ZA (1) | ZA97246B (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU9652798A (en) * | 1997-10-13 | 1999-05-03 | Suparator B.V. | Device for continuously skimming off a floating toplayer |
FR2871479B1 (fr) * | 2004-06-10 | 2006-08-11 | Solvay Sa Sa Belge | Circuit electrique d'un electrolyseur a electrodes bipolaires et installation d'electrolyse a electrodes bipolaires |
CN100439566C (zh) * | 2004-08-06 | 2008-12-03 | 贵阳铝镁设计研究院 | 大面不等电式五点进电母线配置装置 |
FR2882887B1 (fr) * | 2005-03-01 | 2007-04-27 | Solvay | Circuit electrique d'un electrolyseur et procede pour reduire les champs electromagnetiques au voisinage de l'electrolyseur |
FR2882888B1 (fr) * | 2005-03-01 | 2007-04-27 | Solvay | Circuit electrique d'un electrolyseur et procede pour reduire les champs electromagnetiques au voisinage de l'electrolyseur |
US20080143189A1 (en) * | 2006-02-27 | 2008-06-19 | Solvay (Societe Anonyme) | Electrical Circuit Of An Electrolyzer And Method For Reducing The Electromagnetic Fields In The Vicinity Of The Electrolyzer |
FI121472B (fi) * | 2008-06-05 | 2010-11-30 | Outotec Oyj | Menetelmä elektrodien järjestämiseksi elektrolyysiprosessissa, elektrolyysijärjestelmä ja menetelmän käyttö ja/tai järjestelmän käyttö |
RU2536577C2 (ru) * | 2012-02-17 | 2014-12-27 | Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" | Ошиновка мощных алюминиевых электролизеров при их продольном расположении в корпусе |
WO2014014373A1 (ru) * | 2012-07-17 | 2014-01-23 | Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" | Ошиновка алюминиевых электролизеров продольного расположения |
RU2505626C1 (ru) * | 2012-10-25 | 2014-01-27 | Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" | Ошиновка электролизера для получения алюминия |
RU2566120C1 (ru) * | 2014-07-24 | 2015-10-20 | Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" | Ошиновка алюминиевого электролизера |
EP3491176A1 (de) | 2016-07-26 | 2019-06-05 | COBEX GmbH | Kathodenstromabnehmer/-verbinder für eine hall-heroult-zelle |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO139525C (no) * | 1977-07-14 | 1979-03-28 | Ardal Og Sunndal Verk | Anordning for kompensering av horisontale magnetfelter i smelte-elektrolyseovner |
US4196067A (en) * | 1978-02-07 | 1980-04-01 | Swiss Aluminium Ltd. | Absorption of magnetic field lines in electrolytic reduction cells |
DE3009098C2 (de) * | 1979-12-21 | 1983-02-24 | Schweizerische Aluminium AG, 3965 Chippis | Verfahren zur Führung des Stromes zwischen Elektrolyseöfen |
DE3276543D1 (en) * | 1982-01-18 | 1987-07-16 | Aluminia Spa | Method and apparatus for electric current supply of pots for electrolytic production of metals, particularly aluminium |
-
1996
- 1996-01-26 EP EP96810051A patent/EP0787833B1/de not_active Expired - Lifetime
- 1996-01-26 DE DE59607944T patent/DE59607944D1/de not_active Expired - Lifetime
- 1996-12-24 US US08/773,762 patent/US5830335A/en not_active Expired - Lifetime
- 1996-12-24 AU AU76455/96A patent/AU693391B2/en not_active Ceased
- 1996-12-25 RU RU96124395A patent/RU2118410C1/ru not_active IP Right Cessation
-
1997
- 1997-01-10 CA CA002194832A patent/CA2194832A1/en not_active Abandoned
- 1997-01-13 ZA ZA97246A patent/ZA97246B/xx unknown
- 1997-01-16 IS IS4414A patent/IS4414A/is unknown
- 1997-01-21 SK SK91-97A patent/SK282829B6/sk unknown
- 1997-01-24 NO NO19970328A patent/NO317172B1/no not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE59607944D1 (de) | 2001-11-22 |
RU2118410C1 (ru) | 1998-08-27 |
NO970328D0 (no) | 1997-01-24 |
EP0787833A1 (de) | 1997-08-06 |
AU7645596A (en) | 1997-07-31 |
SK9197A3 (en) | 1998-04-08 |
NO317172B1 (no) | 2004-09-06 |
CA2194832A1 (en) | 1997-07-27 |
NO970328L (no) | 1997-07-28 |
AU693391B2 (en) | 1998-06-25 |
IS4414A (is) | 1997-02-20 |
SK282829B6 (sk) | 2002-12-03 |
US5830335A (en) | 1998-11-03 |
ZA97246B (en) | 1997-07-23 |
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