System and method for control of layer formation in an aluminum electrolysis cell

Abstract

And objective of the present invention is to provide an improved method and system for use for control of layer formation in an aluminium electrolysis cell and exploitation of the heat. The present invention attains the above-described objective by a reordering of the fundamental structure of a Hall-Héroult cell, providing two alternatives, eliminating the need for thermal insulation. In a first embodiment the ordering from the inside to the outside is: Electrolyte-sidelining-heat tubes-steel shell. In a second embodiment the ordering from the inside to the outside is: Electrolyte-sidelining-steel shell-heat tubes.

1 .- 8 . (canceled) 
     
     
         9 . A system for use for control of layer formation in an aluminium electrolysis cell and exploitation of heat comprising:
 a sidelining block ( 11 );   a shell ( 8 ); and   a heat tube ( 12 ),   
       wherein the sidelining block ( 11 ) is in thermal contact with the shell ( 8 ), and that the heat tube ( 12 ) is operable to remove heat from at least one of the sidelining and the shell. 
     
     
         10 . The system according to  claim 9 , wherein ordering the ordering from the inside to the outside is sidelining block ( 11 )-heat tube ( 12 )-steel shell ( 8 ). 
     
     
         11 . The system according to  claim 9 , wherein ordering the ordering from the inside to the outside is sidelining block ( 11 )-steel shell ( 8 )-heat tube ( 12 ). 
     
     
         12 . The system according to  claim 9 , wherein the heat tube ( 12 ) is a heat pipe. 
     
     
         13 . The system according to  claim 9 , wherein the heat tube ( 12 ) is a thermosyphon. 
     
     
         14 . The system according to  claim 9 , wherein at least one of thermal paste and thermal conductive glue is applied between sidelining block ( 11 ) and shell. 
     
     
         15 . The system according to  claim 9 , further comprising a thermal insulation layer as the outermost layer. 
     
     
         16 . The system according to  claim 10 , wherein the heat tube ( 12 ) is a heat pipe. 
     
     
         17 . The system according to  claim 10 , wherein the heat tube ( 12 ) is a thermosyphon. 
     
     
         18 . The system according to  claim 10 , wherein at least one of thermal paste and thermal conductive glue is applied between sidelining block ( 11 ) and shell. 
     
     
         19 . The system according to  claim 10 , further comprising a thermal insulation layer as the outermost layer. 
     
     
         20 . The system according to  claim 11 , wherein the heat tube ( 12 ) is a heat pipe. 
     
     
         21 . The system according to  claim 11 , wherein the heat tube ( 12 ) is a thermosyphon. 
     
     
         22 . The system according to  claim 11 , wherein at least one of thermal paste and thermal conductive glue is applied between sidelining block ( 11 ) and shell. 
     
     
         23 . The system according to  claim 11 , further comprising a thermal insulation layer as the outermost layer. 
     
     
         24 . The system according to  claim 12 , wherein the heat tube ( 12 ) is a heat pipe. 
     
     
         25 . The system according to  claim 12 , wherein the heat tube ( 12 ) is a thermosyphon. 
     
     
         26 . The system according to  claim 12 , wherein at least one of thermal paste and thermal conductive glue is applied between sidelining block ( 11 ) and shell. 
     
     
         27 . The system according to  claim 12 , further comprising a thermal insulation layer as the outermost layer. 
     
     
         28 . A method for control of layer formation in an aluminium electrolysis cell said electrolysis shell comprising a sidelining block ( 11 ), a shell ( 8 ) and a heat tube ( 12 ), wherein the sidelining block is in thermal contact with the shell, and that the heat tube is operable to remove heat from at least one of the sidelining and the shell, characterized in conducting the heat away using said surface attached heat tube.