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WO2009033356A1 - Système de refroidissement commandé pour élément électrolytique en aluminium - Google Patents

Système de refroidissement commandé pour élément électrolytique en aluminium Download PDF

Info

Publication number
WO2009033356A1
WO2009033356A1 PCT/CN2008/001502 CN2008001502W WO2009033356A1 WO 2009033356 A1 WO2009033356 A1 WO 2009033356A1 CN 2008001502 W CN2008001502 W CN 2008001502W WO 2009033356 A1 WO2009033356 A1 WO 2009033356A1
Authority
WO
WIPO (PCT)
Prior art keywords
pipe
suction end
electrolytic cell
cooling system
aluminum electrolytic
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.)
Ceased
Application number
PCT/CN2008/001502
Other languages
English (en)
Chinese (zh)
Inventor
Xiaodong Yang
Yafeng Liu
Fuqiang Wang
Dongfang Zhou
Jiaming Zhu
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.)
China Aluminum International Engineering Corp Ltd
Original Assignee
China Aluminum International Engineering Corp Ltd
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 China Aluminum International Engineering Corp Ltd filed Critical China Aluminum International Engineering Corp Ltd
Publication of WO2009033356A1 publication Critical patent/WO2009033356A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • C25C3/08—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

Definitions

  • the present invention relates to a cooling system, and more particularly to a forced cooling system for an aluminum electrolytic cell. Background technique
  • the temperature of the aluminum liquid and the electrolyte melt is stabilized at about 950 ° C by the Joule effect, and the heat is dissipated through the inner liner and the cover layer, thereby causing the entire electrolysis.
  • the tank is in thermal equilibrium.
  • the former Soviet invention patents Nos. SU 605 865 and SU 663 760 disclose the installation of a cooling system that can be controlled outside the electrolysis cell.
  • the side of the trough of such an electrolysis cell comprises a closed cavity, a variable heat shield and a blower, wherein the blower is equipped under the electrolysis cell and is controlled by an adjustable valve.
  • the cooling air discharged from the blower is supplied by a blower or a compressor. But these devices require a huge and cumbersome infrastructure.
  • EP 0 047 227 proposes to thicken the insulation layer in the electrolytic cell and to equip the heat pipe with a heat exchanger.
  • the heat pipe passes through the shell and the insulation layer and is then inserted into the carbonized portion, such as the edge plate. This solution is more complicated and expensive to install, requiring major changes to the cell.
  • US Pat. No. 4,608,135 proposes to install a pipe between the edge plate and the inner insulating layer of the tank body, and a gas collecting device is provided therein. And the air inlet hole is arranged at the side of the groove. Gas collecting device from Air is drawn around the edge of the groove and transported by the pipe along the edge plate. Although this equipment can effectively cool the side of the tank, it needs to make large changes to the electrolytic tank, and the electrolytic tank cannot be operated alone.
  • the present invention provides a forced cooling system for an aluminum electrolytic cell, which aims to fully cool the operating environment in the electrolytic plant and to cool the tank casing without changing the internal structure of the electrolytic cell.
  • the forced cooling system of the aluminum electrolytic cell has a suction end pipe in the compartment on the side of the aluminum electrolytic cell, the exhaust end pipe is connected with the ventilation main pipe, and the ventilation main pipe is connected to the ventilation main pipe.
  • the ventilation main is connected to the exhaust fan.
  • the exhaust fan can be replaced by a blower.
  • a heat sink is disposed above and below the suction end pipe.
  • the suction end pipe comprises a suction end pipe, a suction end pipe, a suction end main branch pipe and a suction end side branch pipe.
  • the pumping end cross tube, the pumping end main branch pipe and the pumping end side branch pipe are respectively upper and lower Features a heat sink.
  • the pumping end main branch pipe and the pumping end side branch pipe are disposed between the pumping end main pipe and the pumping end cross pipe.
  • the pumping end cross tube is of an up and down adjustable structure.
  • the pumping end pipe comprises a pumping end main pipe, a pumping end main branch pipe and a pumping end side branch pipe, and a heat sink is respectively arranged at the upper and lower sides of the pumping end main branch pipe and the pumping end side branch pipe.
  • the suction side branch pipe is a straight pipe or a curved pipe with an inclination of 90-170 degrees.
  • the suction end side branch pipe is inclined from the suction end pipe and is bilaterally symmetrical, and is chamfered at the pipe turning and joint.
  • the number of the suction side branch pipes is 1 - 16 .
  • the suction end horizontal pipe, the suction end main branch pipe and the suction end side branch pipe inlet have an outer expansion shape.
  • the distance between the heat sink and the horizontal end of the suction end, the main branch of the suction end and the side branch of the suction end is 20 mm-200 mm.
  • the distance between the heat sink and the ventilating trunk is 40mm-300mm.
  • the inlet of the suction end tube is aligned with the interface between the aluminum liquid and the electrolyte.
  • the distance between the suction end pipe and the groove wall is 20 - 50 mm.
  • the regulating valve is installed at the suction end pipe.
  • the ventilation main pipe is a variable diameter pipe or a straight pipe.
  • variable diameter pipe is a tapered pipe.
  • the vented trunk passes through the opening of the cradle.
  • the advantages and effects of the invention are as follows:
  • the system has the advantages of simple structure, low cost, convenient disassembly, management and maintenance; welding a certain number of fins on the side of the trough, and then installing a special shape of the exhaust duct to make the nozzle close to the side wall of the electrolyzer
  • the high temperature air layer near the high temperature wall of the tank shell is destroyed and transferred by means of pipe pumping or blowing, which enhances the air flow near the wall surface and strengthens the convective heat transfer, thereby achieving the purpose of cooling the electrolytic tank.
  • It can be switched between pumping or blowing according to different situations, and has strong flexibility; it can effectively improve the working environment beside the aluminum electrolysis tank, and is suitable for daily operation of electrolysis workers.
  • DRAWINGS BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic view showing the structure of the present invention provided on an electrolytic cell.
  • Figure 2 is a cross-sectional view showing a suction end pipe of Embodiment 1 of the present invention.
  • Figure 3 is a cross-sectional view showing a suction end pipe of Embodiment 2 of the present invention.
  • Figure 4 is a schematic illustration of a single tank cooling system of the present invention.
  • Figure 5 is a schematic illustration of a multi-slot cooling system of the present invention.
  • the forced cooling system of the aluminum electrolytic cell of the present invention is provided with a suction end pipe 2 in the compartment on the side of the aluminum electrolytic cell 1, and the inlet of the suction end pipe 2 is aligned with the interface of the aluminum liquid 9 and the electrolyte 10.
  • the exhaust end pipe 2 is connected to the ventilation main pipe 3, the ventilation main pipe 3 is connected to the ventilation main pipe 4, the ventilation main pipe 4 is connected with the exhaust fan 5, and the air volume control is performed by adjusting the wide door 1 1 at the suction end pipe 2
  • the upper and lower sides are provided with a heat sink 7, and the suction end pipe 2 includes a suction end pipe 24, a suction end horizontal pipe 21, a suction end main branch pipe 22, a suction end side branch pipe 23, and an air volume regulating valve 25,
  • the fins 21, the pumping end main branch 22 and the pumping end side branch 23 are respectively provided with fins, and the spacing between the fins should not be too narrow.
  • the heat radiation exchange coefficient should be minimized and aligned separately.
  • the suction end side branch pipe 23 is a straight pipe, and is inclined from the suction end pipe 24 to be bilaterally symmetrical, and is chamfered at the pipe turning and joint to smooth it; the suction end pipe 21, the suction end main branch pipe 22, and the pumping end
  • the inlet of the end side branch pipe 23 has an outer expansion shape, and the distance between the heat sink 7 and the suction end horizontal pipe 2 1 , the suction end main branch pipe 22 and the suction end side branch pipe 23 is 20 mm - 200 mm to prevent thermal expansion due to the steel plate.
  • the fins 7 When pressed against each other, the fins 7 are longitudinally welded to the groove wall 8, not to the suction end.
  • the airflow in the inlet section of the tube 21 is hindered, and the heat sink 7 should not be too long, so that the distance between the top end of the heat sink 7 and the ventilation main pipe 3 is kept at 40 mm-300.
  • the ventilating main pipe 3 is a variable diameter pipe or a straight pipe, and the variable diameter pipe is a conical pipe.
  • the vented trunk 3 passes through the opening of the cradle 6.
  • a negative pressure is formed in the ventilation main pipe 21 by the exhaust fan 5, so that the high-temperature air near the high temperature region of the side wall of the electrolytic cell is sucked into the suction end main branch pipe 22 and the suction end side branch pipe 23 through the suction end cross pipe 21, and then It flows into the vent main 3 and then exits the electrolysis plant.
  • the suction end pipe 2 in the embodiment 1 includes a suction end pipe 24, a suction end main branch pipe 22, and a suction end side branch pipe 23, and the suction end side branch pipe is a bent pipe having an inclination angle of 90 to 170 degrees. According to the actual situation, the angle and the number of the suction end side branch pipes 23 can be appropriately adjusted according to the number of the heat sinks and the welding position, and the number of the exhaust end side branch pipes is 1 - 16. Other the same embodiment 1
  • the exhaust fan 5 can be replaced with a blower to provide air cooling to the aluminum electrolysis cell on the existing pipe system.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Abstract

L'invention concerne un système de refroidissement, en particulier un système de refroidissement commandé pour un élément électrolytique en aluminium. Le système de refroidissement commandé de la présente invention pour un élément électrolytique en aluminium est mis en marche par les moyens techniques suivant : un tube d'échappement latéral est ménagé dans le compartiment situé sur le côté de l'élément électrolytique, le tube d'échappement latéral alimente le tube d'aération artériel, le tube d'aération artériel alimente le tube d'aération principal et le tube d'aération principal est relié au ventilateur d'évacuation. Le système de la présente invention présente une structure simple et à faible coût qui est facile à réassembler, surveiller et réparer. Certaines plaques de refroidissement sont soudées sur les côtés de l'élément et certains tubes d'évacuation de structure spéciale y sont également ménagés. Ainsi l'orifice de la tubulure est proche de la zone à haute température sur les côtés de l'élément. En évacuant ou en soufflant l'air par l'intermédiaire d'un tube, on détruit et on transfère la couche d'air à haute température à proximité de la paroi latérale à haute température de l'élément, l'écoulement d'air à proximité de la paroi latérale a progressé et l'échange de chaleur par convection est amélioré, ainsi on réalise l'objectif de refroidir l'élément.
PCT/CN2008/001502 2007-08-31 2008-08-20 Système de refroidissement commandé pour élément électrolytique en aluminium Ceased WO2009033356A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200710012647.6 2007-08-31
CN2007100126476A CN101376991B (zh) 2007-08-31 2007-08-31 铝电解槽的强制冷却系统

Publications (1)

Publication Number Publication Date
WO2009033356A1 true WO2009033356A1 (fr) 2009-03-19

Family

ID=40420723

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2008/001502 Ceased WO2009033356A1 (fr) 2007-08-31 2008-08-20 Système de refroidissement commandé pour élément électrolytique en aluminium

Country Status (4)

Country Link
CN (1) CN101376991B (fr)
MY (1) MY156782A (fr)
SA (1) SA08290545B1 (fr)
WO (1) WO2009033356A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107090588A (zh) * 2017-06-26 2017-08-25 河南工程学院 一种铝电解槽保温调节及余热利用系统
GB2564456A (en) * 2017-07-12 2019-01-16 Dubai Aluminium Pjsc Electrolysis cell for Hall-Héroult process, with cooling pipes for forced air cooling

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AR083049A1 (es) * 2010-09-22 2013-01-30 Goodtech Recovery Technology As Revestimiento lateral
CN102051636B (zh) * 2011-01-07 2012-07-25 长沙理工大学 基于热管的预焙铝电解槽
CN103757657A (zh) * 2013-07-02 2014-04-30 苏州天华有色金属制品有限公司 一种散热效果好的电解槽
CN105274569A (zh) * 2014-06-30 2016-01-27 沈阳铝镁设计研究院有限公司 铝电解槽强制通风结构
CN104562086B (zh) * 2015-02-03 2017-09-19 奉新赣锋锂业有限公司 一种可调温式金属锂电解槽
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
CN111690952A (zh) * 2020-07-23 2020-09-22 贵阳铝镁设计研究院有限公司 一种铝电解槽柔性生产装置
CN112595762A (zh) * 2020-12-24 2021-04-02 郑州轻冶科技股份有限公司 铝电解槽模拟试验装置及铝电解槽模拟试验系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6251237B1 (en) * 1998-04-16 2001-06-26 Aluminium Pechiney Electrolytic pot for production of aluminum using the Hall-Héroult process comprising cooling means
CN1665963A (zh) * 2002-07-09 2005-09-07 皮奇尼铝公司 炼铝用电解槽的冷却方法及系统
US20070187230A1 (en) * 2004-10-21 2007-08-16 Ingo Bayer Internal Cooling of Electrolytic Smelting Cell
CN200985350Y (zh) * 2006-12-20 2007-12-05 东北大学设计研究院（有限公司） 大型铝电解槽强制对流冷却装置
CN201109799Y (zh) * 2007-09-20 2008-09-03 沈阳铝镁设计研究院 铝电解槽的强制冷却系统

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6251237B1 (en) * 1998-04-16 2001-06-26 Aluminium Pechiney Electrolytic pot for production of aluminum using the Hall-Héroult process comprising cooling means
CN1665963A (zh) * 2002-07-09 2005-09-07 皮奇尼铝公司 炼铝用电解槽的冷却方法及系统
US20070187230A1 (en) * 2004-10-21 2007-08-16 Ingo Bayer Internal Cooling of Electrolytic Smelting Cell
CN200985350Y (zh) * 2006-12-20 2007-12-05 东北大学设计研究院（有限公司） 大型铝电解槽强制对流冷却装置
CN201109799Y (zh) * 2007-09-20 2008-09-03 沈阳铝镁设计研究院 铝电解槽的强制冷却系统

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107090588A (zh) * 2017-06-26 2017-08-25 河南工程学院 一种铝电解槽保温调节及余热利用系统
GB2564456A (en) * 2017-07-12 2019-01-16 Dubai Aluminium Pjsc Electrolysis cell for Hall-Héroult process, with cooling pipes for forced air cooling

Also Published As

Publication number Publication date
MY156782A (en) 2016-03-31
CN101376991A (zh) 2009-03-04
SA08290545B1 (ar) 2012-08-06
CN101376991B (zh) 2011-08-31

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