10/31/2023 0 Comments Pyrosim(Cr,Al) 2O 3, that is very stable even at high temperatures.The chromite ore has a spinel crystalline structure, represented by (Fe,Mg)O (1) shows a highly simplified version of the principal reaction that takes place. The production of ferrochromium takes place at very high temperatures, by reacting chromite ore, together with fluxes such as lime and silica, with a carbonaceous reducing agent. Since then, the size of these furnaces has expanded, and the power has increased from 12 MW to 72 MW, and this technology has been applied to the production of numerous other commodities in furnaces up to 80 MW. There were obtained important values which allow us to realize an appropriate impact on the event in aim of minimizing the time for a promptly intervention and to limit the damages.It has been over thirty years since DC arc furnace smelting technology was first implemented industrially, in 1984, for the smelting of fine chromite ores to produce ferrochromium. Also, sprinklers have been used in the simulation time, in order to give an accurate firefighting simulation. Considering an electrical fault followed by a fire, temperature and smoke spreading depending on time in this tunnel were obtained. The accident, consisting in a fire event at one stationary car, is modeled at 1.5 m height. A simulation using Pyrosim software is based on the physical model in which one electrical fault accident involving a car appear. Road tunnels can be framed in the category above mentioned, being exposed to a high traffic, because most of them are 20-30 years old and were built for the traffic estimated of those times. Also, road tunnels represent semi-closed and closed spaces, with high fire risk, so no easy fire safety management opportunities can be used. One of the greatest emergency situations that can occur in road tunnels, is represented by fire, involving all conditions relating to the nature and density of combustible materials existing, smoke, toxic gases and the combustion debris from fire fighting and action in order to minimize the negative consequences of it. In order to short the distances and cross various road areas, road tunnels are built frequently and longest as possible. Nowadays the world is facing an increasingly traffic, especially in the road.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |