ID 127

Case Study: Improvement Of Drop Size For Gas Conditioning Application In A Sulfuric Acid Plant

 

Abstract:

One of the mechanisms of sulfuric acid production is the pyrite calcination. This process happens in a fluid bed reactor that removes the sulfur from the pyrite by successive oxidative reactions. The oxidized sulfur, gaseous sulfur dioxide, leaves the fluid bed reactor and passes through a particle collection system, consisting of cyclone separator and gas conditioning tower. This article presents results on the efficiency of the gas conditioning system by reducing the droplets diameter produced by the spray nozzles. The gas conditioning results were as best as the droplet size and the contaminant particle size were closer. It is shown that this modification promoted the reduction of contaminants (iron) content of the final product of sulfuric acid, its clarification, the production maximization for the higher quality acid (acid I) and greater stability and reliability in the acid plant. Particularly in the drying tower, there was also an improvement in mesh pad loss, stabilization of converter bed losses and imbalance of the sulfur dioxide blower.