Abstract

ROJAS, Francisco; BIRROT, Ángel; REQUENA, Durlym  and  MALAVE, Imer. IMPROVEMENT PROPOSALS OF ANODIC SYSTEM IN CELLS HALL-230 OF C.V.G. VENALUM V LÍNEA. uct [online]. 2010, vol.14, n.56, pp.189-203. ISSN 1316-4821.

The 180 Hall-230 aluminiun reduction cell of V line C.V.G-VENALUM complex use to operate with an electrical current of 227 kA. When the supply of the cells increases to its design current (230 kA), the cells electrical-stability and efficiency decreases, producing a drop in the aluminum production The anodic system is a cells modifiable component which can produce improvements to the process. As using thermoelectric simulations, with the commercial program of finite elements ANSYS, 6 new anodic systems models were carried out in order to compare its distributions of current density, electrical voltage and temperature with the anodes 1400 mm.The proposed models are 1500 mm anodes whose yoke (tops and its forms nimbers) and the anodic rod were modified. The simulations showed that the models 4 tops yokes whose rods have been modified were those which had higher electrical voltage decreases for effect óhmico, between 27 and 36 mV, which implies daily saving of 35,147 MWh diary in V line. Furthermore, they showed better symmetries in the current distributions, all of which generates higher efficiency and electrical stability of the cells.

Keywords : Aluminum Ceduction Cells; Electric Current; Efficiency and Electrical Stability; Anodic System; Thermoelectric Simulations.