RENOESTE Salt Factory
afaplan - planeamento e gestão de projectos, SA
afaconsult studied and developed different structural solutions for the provisional structure of salt retention factory at the brine basins in the premises of Fábrica de Sal da Renoeste, Valorização de Recursos Naturais, S.A., located at Carriço, Pombal.
The Renoeste Complex includes, among others, buildings and equipment, a series of six salt basins to where brine is sprayed in order to produce salt. This spraying system has the inconvenient of under the wind action carry the salt crystals to the adjoining mechanical equipment area. In order to prevent this situation, we intend to study a retention system for the salt particles to be used when its windy. This provisional structure is installed on the southernmost zone of the south basin.
Due to the characteristics of the salt production, this structure is subjected to a hostile environmental aggression. However, since it is a temporary structure (for a two month period) and since it constitutes no harm for human life no measures were taken to protect it from the chloride aggression in such a hostile saline environment.
The structure withstands a series of Raschel-type nets which let the air flow, quite useful for salt production, but retaining the particles that otherwise would leave the basin area. The wind will remove the salt through the net vibration. The net system creates a cube isolating the spraying downpour laterally by four pieces of vertical net, by an horizontal net on top and by the water in the saline basin at the bottom.
In order to avoid any disruption in production, the free standing structure has a four metre height from the edge of the water surface to the surrounding road. The system adopted was simple to implement.