US20130199938A1 - System and method for control of side layer formation in an aluminium electrolysis cell - Google Patents

System and method for control of side layer formation in an aluminium electrolysis cell Download PDF

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Publication number
US20130199938A1
US20130199938A1 US13/825,752 US201113825752A US2013199938A1 US 20130199938 A1 US20130199938 A1 US 20130199938A1 US 201113825752 A US201113825752 A US 201113825752A US 2013199938 A1 US2013199938 A1 US 2013199938A1
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US
United States
Prior art keywords
heat
sidelining
tube
layer formation
electrolysis cell
Prior art date
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Abandoned
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US13/825,752
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English (en)
Inventor
John Paul Salvador
Veroslav Sedlak
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GOODTECH RECOVERY TECHNOLOGY AS
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GOODTECH RECOVERY TECHNOLOGY AS
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Assigned to GOODTECH RECOVERY TECHNOLOGY AS reassignment GOODTECH RECOVERY TECHNOLOGY AS ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SEDLAK, VEROSLAV, SALVADOR, JOHN PAUL
Publication of US20130199938A1 publication Critical patent/US20130199938A1/en
Abandoned legal-status Critical Current

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    • 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
    • C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
    • 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
    • C25C3/20—Automatic control or regulation of cells
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/12—Casings; Linings; Walls; Roofs incorporating cooling arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D9/00—Cooling of furnaces or of charges therein
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Definitions

  • the invention regards heat regulation in general and particularly method and system for use for control of layer formation in an aluminium electrolysis cell and exploitation of heat.
  • the operations of the cells depend on the formation and maintenance of a protective layer of frozen electrolyte in the side walls of the cell.
  • This frozen bath is called side layer and protects the side lining of the cells against chemical and mechanical wear, and is an essential condition for achieving long lifetime of the cells.
  • the crystallized bath operates simultaneously as a buffer for the cell with regards of changes in the heat balance.
  • the heat generation and the heat balance of the cell will vary due to unwanted disturbances of the operation (changes in bath acidity, changes in alumina concentration, changes in interpolar distances, etc.) and desired activities on the cells (metal tapping, change of anode, fire, etc.).
  • GB 2076428A describing an aluminium cell with isolating layers in bottom and walls.
  • the walls In the walls there are carbon blocks with heat tubes moulded in for the removal of heat from the cell.
  • the heat tubes can be adjusted with different distances in order to vary the degree of heat removal.
  • the object of the invention is to provide a method and system for use for control of layer formation in an aluminium electrolysis cell and exploitation of the heat.
  • the invention provides thus a system for use for control of layer formation in an aluminium electrolysis cell and exploitation of heat comprising sidelining provided with at least one hollow for heat transfer and at least one heat tube, characterized in that the heat tube is provided by the hollow and that the hollow is at least one canal provided along the surface of the sidelining.
  • a method for control of layer formation in an aluminium electrolysis cell and exploitation of heat comprising sidelining provided with at least one hollow for heat transfer and with at least one heat tube, wherein the heat tube is provided by the hollow and that the hollow is at least one canal provided along the surface of the sidelining, characterized in conducting the heat away using said at least one heat tube.
  • a sidelining provided with heat tube for transport of heat is provided.
  • the present invention relates to structural elements for forming a sidelining material for cooling of sidelining in aluminium electrolysis cells for the purpose of controlling and adjusting sidelining thickness in the cell.
  • the sidelining materials it is also possible to provide heat exchange of such cells with possibility of regeneration of heat as electrical energy and/or heat.
  • By the forming of sidelining materials in the present invention one should understand design, formation and production of hollows in the material for the purpose of mounting of heat tubes such as heat pipes to lead heat to the outside of the aluminium electrolysis bath.
  • the evaporation end of the heat tube is mounted on the inside of the electrolysis bath and is in contact with the above mentioned sidelining material while on the heat tube condensation end a cooling element is mounted transferring the transported heat to a suited cooling medium such as for instance oil.
  • the sidelining material is manufactured without requirements for inserting thin canals. Instead a plurality of heat tubes are utilized, attached to the sidelining.
  • the technical effect of the difference is that one achieves efficient transfer of heat without having to sinter sidelinings with thin canals along with the problems that this incurs.
  • heat tubes can be more efficient in transferring heat than use of cooling medium in the canals.
  • a further technical effect is that the heat tubes will be more stably fastened to the longitudinal canals in the surface of the sidelining and that there will be a low thermal gradient along the canal compared to canals known from the state of the art.
  • FIG. 1 shows a typical embodiment of the invention in the form of a sidelining block with hollows and heat tube for an electrolysis cell
  • FIG. 2 shows a detail section of the embodiment of FIG. 1 together with section as seen from the side
  • FIG. 3 shows an example of providing heat tubes in the sidelining block
  • FIG. 4 shows another example of providing heat tubes in the sidelining block.
  • sidelining block 11 together with the heat isolation 10 , wherein the sidelining block is provided with heat tube 12 .
  • the sidelining block 11 is typically made from SiC 11 a, 11 b as in example a and b.
  • FIG. 1 schematically shows a typical embodiment of the invention in the form of a sidelining block with hollows and heat tubes for an electrolysis cell.
  • the sidelining block is manufactured from a ceramic material. It is manufactured in a particular way to achieve the intended hollows.
  • One example of possible positioning of hollows are shown in FIG. 1 with a detail section in FIG. 2 , but also other forms can be used for the hollows.
  • FIG. 2 shows the detail section also from the side where the heat tubes are positioned standing along the canals in the surface of the sidelining block.
  • FIG. 3 Examples of other embodiments are shown in FIG. 3 and in FIG. 4 with inclined heat tubes.
  • Heat tubes are positioned against these hollows and an example of such a heat tube in the form of a heat pipe.
  • a cooling element On the cold end of the heat tube, also known as the condensation side, a cooling element is mounted comprising a condensation unit for heat tube 13 and condensation fins 14 .
  • condensation unit 13 One end is meant as an input while the other is an output for the cooling medium that is to remove heat from the heat tube.
  • Such cooling elements can be connected together.
  • the invention achieves its solution by the assembly of plurality of principles.
  • heat tube where the phase transition liquid to vapour in the hot end transports large amounts of heat to the cold end where the vapour condenses to liquid which then is returned to the hot end.
  • heat tube there are two embodiments intended: “heat pipe” where a wick or other capillary effect pulls the liquid back to the hot end, and “thermosyphon” where the gravity pulls the liquid back to the hot end.
  • An aluminium electrolysis cell will comprise several tens of such “heat pipe” heat exchangers in the sidewalls. The heat removed from the cells will be transported in a cooling medium. This heat can for instance be exploited to produce electrical energy.
  • a plurality of electrolysis cells can also be connected together in order to regenerate the cooled effect in an efficient manner.
  • the invention is applicable for control of layer formation in a aluminium electrolysis cell and exploitation of the heat.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US13/825,752 2010-09-22 2011-09-20 System and method for control of side layer formation in an aluminium electrolysis cell Abandoned US20130199938A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO20101321 2010-09-22
NO20101321 2010-09-22
PCT/NO2011/000263 WO2012039624A1 (en) 2010-09-22 2011-09-20 System and method for control of side layer formation in an aluminium electrolysis cell

Publications (1)

Publication Number Publication Date
US20130199938A1 true US20130199938A1 (en) 2013-08-08

Family

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US13/825,752 Abandoned US20130199938A1 (en) 2010-09-22 2011-09-20 System and method for control of side layer formation in an aluminium electrolysis cell

Country Status (11)

Country Link
US (1) US20130199938A1 (pt)
EP (1) EP2619518A4 (pt)
CN (1) CN103210273A (pt)
AP (1) AP2013006815A0 (pt)
AR (1) AR083049A1 (pt)
AU (1) AU2011306524A1 (pt)
BR (1) BR112013006526A2 (pt)
CA (1) CA2811873A1 (pt)
EA (1) EA201390309A1 (pt)
WO (1) WO2012039624A1 (pt)
ZA (1) ZA201301798B (pt)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160145135A1 (en) * 2013-05-30 2016-05-26 Johns Manville Submerged combustion glass melting systems and methods of use

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013055229A1 (en) * 2011-10-10 2013-04-18 Goodtech Recovery Technology As System and method for control pf layer in an aluminium electrolysis cell
US20140174943A1 (en) * 2011-10-10 2014-06-26 John Paul Salvador System and method for control of layer formation in an aluminum electrolysis cell
NO337186B1 (no) * 2013-05-06 2016-02-08 Goodtech Recovery Tech As Varmerørsammenstilling med returlinjer
NO340554B1 (en) * 2015-05-18 2017-05-08 Goodtech Recovery Tech As Heat recovery
NO20180376A1 (en) 2018-03-16 2019-09-17 Cronus Tech As A system for recovery of waste heat from an industrial plant
CN108866574B (zh) * 2018-09-05 2020-06-12 辽宁石油化工大学 一种用于铝电解槽的热交换装置

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US4592820A (en) * 1982-05-28 1986-06-03 Alcan International Limited Electrolytic reduction cells for aluminium production
US4913065A (en) * 1989-03-27 1990-04-03 Indugas, Inc. In situ thermal waste disposal system
US6110430A (en) * 1998-04-06 2000-08-29 Cmi Corporation Decontamination plant including an indirectly heated desorption system
US20050132672A1 (en) * 2003-12-17 2005-06-23 Hershey Lerner Packaging machine and process
US20050160735A1 (en) * 2004-01-26 2005-07-28 Anju Nelson Water hydrogen engine system
US20100092164A1 (en) * 2008-05-16 2010-04-15 Ziehm Raymond G Tankless heater instant hot water
WO2010050823A1 (en) * 2008-10-31 2010-05-06 Norsk Hydro Asa Method and means for extracting heat from aluminium electrolysis cells

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DE1934486C3 (de) * 1969-07-08 1984-03-01 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen Einrichtung zur Kühlung hochhitzebeanspruchter Mauerwerksteile, insbesondere von Metallschmelzöfen
GB2076428B (en) * 1980-05-19 1983-11-09 Carblox Ltd Aluminium manufacture
DE3033710A1 (de) * 1980-09-02 1982-04-01 Schweizerische Aluminium AG, 3965 Chippis Vorrichtung zum regulieren des waermeflusses einer aluminiumschmelzflusselektrolysezelle und verfahren zum betrieb dieser zelle
US4608134A (en) * 1985-04-22 1986-08-26 Aluminum Company Of America Hall cell with inert liner
AT400958B (de) * 1992-08-24 1996-05-28 Voest Alpine Ind Anlagen Mit einer mantelkühlung versehenes metallurgisches gefäss
NO313462B1 (no) * 2000-06-07 2002-10-07 Elkem Materials Elektrolysecelle for fremstilling av aluminium, en rekke elektrolyseceller i en elektrolysehall, fremgangsmåte for åopprettholde en kruste på en sidevegg i en elektrolysecelle samtfremgangsmåte for gjenvinning av elektrisk energi fra en elektr
FR2842215B1 (fr) * 2002-07-09 2004-08-13 Pechiney Aluminium Procede et systeme de refroidissement d'une cuve d'electrolyse pour la production d'aluminium
NO20024048D0 (no) * 2002-08-23 2002-08-23 Norsk Hydro As Fremgangsmåte for drift av en elektrolysecelle samt midler for samme
FR2893329B1 (fr) * 2005-11-14 2008-05-16 Aluminium Pechiney Soc Par Act Cuve d'electrolyse avec echangeur thermique.
CN101376991B (zh) * 2007-08-31 2011-08-31 沈阳铝镁设计研究院有限公司 铝电解槽的强制冷却系统
CN100494506C (zh) * 2008-04-17 2009-06-03 东北大学 一种铝电解槽散发余热的回收方法及其装置
CN101610046B (zh) * 2008-06-16 2011-04-20 湖南晟通科技集团有限公司 铝电解槽废热利用方法
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US4592820A (en) * 1982-05-28 1986-06-03 Alcan International Limited Electrolytic reduction cells for aluminium production
US4913065A (en) * 1989-03-27 1990-04-03 Indugas, Inc. In situ thermal waste disposal system
US6110430A (en) * 1998-04-06 2000-08-29 Cmi Corporation Decontamination plant including an indirectly heated desorption system
US20050132672A1 (en) * 2003-12-17 2005-06-23 Hershey Lerner Packaging machine and process
US20050160735A1 (en) * 2004-01-26 2005-07-28 Anju Nelson Water hydrogen engine system
US20100092164A1 (en) * 2008-05-16 2010-04-15 Ziehm Raymond G Tankless heater instant hot water
WO2010050823A1 (en) * 2008-10-31 2010-05-06 Norsk Hydro Asa Method and means for extracting heat from aluminium electrolysis cells

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160145135A1 (en) * 2013-05-30 2016-05-26 Johns Manville Submerged combustion glass melting systems and methods of use
US9731990B2 (en) * 2013-05-30 2017-08-15 Johns Manville Submerged combustion glass melting systems and methods of use

Also Published As

Publication number Publication date
BR112013006526A2 (pt) 2016-08-02
CN103210273A (zh) 2013-07-17
EP2619518A1 (en) 2013-07-31
WO2012039624A1 (en) 2012-03-29
ZA201301798B (en) 2014-05-28
AR083049A1 (es) 2013-01-30
AP2013006815A0 (en) 2013-04-30
AU2011306524A1 (en) 2013-03-21
EA201390309A1 (ru) 2013-08-30
EP2619518A4 (en) 2017-05-17
CA2811873A1 (en) 2012-03-29

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Owner name: GOODTECH RECOVERY TECHNOLOGY AS, NORWAY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SALVADOR, JOHN PAUL;SEDLAK, VEROSLAV;SIGNING DATES FROM 20130410 TO 20130415;REEL/FRAME:030249/0276

STCB Information on status: application discontinuation

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