BR112021006307A2 - method and system for controlling the normal operational suction of exhaust gases from individual electrolysis cells - Google Patents

method and system for controlling the normal operational suction of exhaust gases from individual electrolysis cells

Info

Publication number
BR112021006307A2
BR112021006307A2 BR112021006307A BR112021006307A BR112021006307A2 BR 112021006307 A2 BR112021006307 A2 BR 112021006307A2 BR 112021006307 A BR112021006307 A BR 112021006307A BR 112021006307 A BR112021006307 A BR 112021006307A BR 112021006307 A2 BR112021006307 A2 BR 112021006307A2
Authority
BR
Brazil
Prior art keywords
gas
controlling
exhaust gases
normal operational
suction
Prior art date
Application number
BR112021006307A
Other languages
Portuguese (pt)
Inventor
Dyrøy Are
Manger Eirik
Karlsen Morten
Original Assignee
Norsk Hydro As
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 Norsk Hydro As filed Critical Norsk Hydro As
Publication of BR112021006307A2 publication Critical patent/BR112021006307A2/en

Links

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
    • C25C3/22—Collecting emitted gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
    • 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
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
    • C25C7/06—Operating or servicing

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 Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Electrolytic Production Of Metals (AREA)

Abstract

método e sistema para controlar a sucção operacional normal de gases de saída a partir de células de eletrólise individuais. a presente invenção se refere a um método e um sistema para controlar a sucção operacional normal de gases de saída a partir de células de eletrólise individuais para produção de alumínio, onde as células pode ser do tipo hall-héroult e sendo adicionalmente providas com um coifa (ch) conectada via um duto de gás (gd) a um duto de gás principal (mgd) tendo meios para gerar uma sucção que transporta o gás para um centro de tratamento de gás (gtc), onde o fluxo de gás em dito duto de gás (gd) é controlado por um amortecedor de duto de gás (gdd). uma ou mais variável(is) de processo tais como pressão e/ou temperatura no duto de gás (gd) de cada célula são medidas e usadas como sinais de entrada para um controlador (plc) compreendendo um calculador onde o controlador calcula o fluxo de massa real em dito duto de gás (gd) com base em um algoritmo predefinido e produz um sinal de ajuste de saída correspondendo a uma vazão desejada, o sinal é transmitido para um atuador (a) que regula a posição do amortecedor de duto de gás (gdd) e a seguir o fluxo de gás no duto de gás a partir de cada célula individual.method and system for controlling the normal operational suction of exhaust gases from individual electrolysis cells. the present invention relates to a method and system for controlling the normal operational suction of exhaust gases from individual electrolysis cells for aluminum production, where the cells may be of the hall-heroult type and additionally provided with a hood (ch) connected via a gas pipeline (gd) to a main gas pipeline (mgd) having means to generate a suction that transports the gas to a gas treatment center (gtc), where the gas flow in said pipeline gas (gd) is controlled by a gas duct damper (gdd). one or more process variable(s) such as pressure and/or temperature in the gas duct (gd) of each cell are measured and used as input signals to a controller (plc) comprising a calculator where the controller calculates the flow of actual mass in said gas duct (gd) based on a predefined algorithm and produces an output adjustment signal corresponding to a desired flow, the signal is transmitted to an actuator (a) which regulates the position of the gas duct damper (gdd) and then the gas flow in the gas duct from each individual cell.

BR112021006307A 2018-11-20 2019-11-18 method and system for controlling the normal operational suction of exhaust gases from individual electrolysis cells BR112021006307A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20181482A NO20181482A1 (en) 2018-11-20 2018-11-20 Method and system for controlling suction of off-gases from electrolysis cells
PCT/EP2019/081566 WO2020104343A1 (en) 2018-11-20 2019-11-18 Method and system for controlling suction of off-gases from electrolysis cells

Publications (1)

Publication Number Publication Date
BR112021006307A2 true BR112021006307A2 (en) 2021-07-06

Family

ID=68699389

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112021006307A BR112021006307A2 (en) 2018-11-20 2019-11-18 method and system for controlling the normal operational suction of exhaust gases from individual electrolysis cells

Country Status (8)

Country Link
EP (1) EP3884083A1 (en)
AU (1) AU2019382770A1 (en)
BR (1) BR112021006307A2 (en)
CA (1) CA3115415A1 (en)
EA (1) EA202191402A1 (en)
NO (1) NO20181482A1 (en)
WO (1) WO2020104343A1 (en)
ZA (1) ZA202102193B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112813484A (en) * 2020-12-31 2021-05-18 重庆桃园金属表面处理有限公司 Electroplating pool
CN112655406B (en) * 2021-01-18 2022-11-22 深圳市乐凡电子有限公司 Automatic supervisory equipment who removes side branch in woods

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2563845B1 (en) * 1984-05-03 1986-10-03 Pechiney Aluminium METHOD AND DEVICE FOR AUTOMATIC OVER-SUCTION ON ELECTROLYSIS TANKS FOR THE PRODUCTION OF ALUMINUM
US4741257A (en) * 1985-01-09 1988-05-03 Air Monitor Corporation Fume hood air flow control
NO310730B1 (en) 1999-11-17 2001-08-20 Norsk Hydro As Method and apparatus for operation of electrolysis cell
US6669547B2 (en) * 2001-08-28 2003-12-30 Board Of Regents Of University Of Nebraska Multi-stack exhaust system
CN101589180B (en) * 2006-12-21 2011-04-06 丹尼利克里斯技术服务有限公司 Apparatus and method for removal of gasses
NO328080B1 (en) * 2007-11-19 2009-11-30 Norsk Hydro As Method and apparatus for controlling an electrolysis cell
EP2248605A1 (en) * 2009-05-06 2010-11-10 Danieli Corus BV Apparatus and method for balances removal of gasses from electrolysis cells by suction
CN104694969A (en) * 2013-12-10 2015-06-10 孙滕安 Alumina conveying and electrolytic gas purifying control system
CN104047032B (en) * 2014-06-27 2017-02-15 中国铝业股份有限公司 Method for automatically adjusting energy balance of aluminum electrolysis cell
US20180142368A1 (en) * 2016-11-21 2018-05-24 Victor Eduardo VIDAURRE-HEIREMANS Method and System for Precluding Air Pollution in Industrial Facilities

Also Published As

Publication number Publication date
WO2020104343A1 (en) 2020-05-28
AU2019382770A1 (en) 2021-05-06
EP3884083A1 (en) 2021-09-29
CA3115415A1 (en) 2020-05-28
NZ774481A (en) 2023-12-22
ZA202102193B (en) 2022-08-31
NO20181482A1 (en) 2020-05-21
EA202191402A1 (en) 2021-09-30

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