Sulfuric Acid from Sulfur via Double-Contact Process - Cost Analysis - Sulfuric Acid E11A

Book excerpt: This report presents a cost analysis of Sulfuric Acid production from sulfur. The process examined is a conventional process comprising sulfur burning followed by a typical double-contact double absorption (DC/DA) process. In this process, sulfur dioxide is obtained by molten sulfur burning. Sulfur dioxide is converted to sulfur trioxide in a reactor. The sulfur trioxide-rich gaseous stream is absorbed in recirculating sulfuric acid. The absorption column offgas is sent to a further bed in the SO2 reactor for converting the remaining sulfur dioxide into sulfur trioxide, which is then absorbed in a second column with recirculating sulfuric acid. This report was developed based essentially on the following reference(s): "Sulfuric Acid and Sulfur Trioxide", Ullmann's Encyclopedia of Industrial Chemistry, 7th edition Keywords: Sulphuric Acid, Sulphur, Oleum, Fuming Sulfuric Acid, Exothermic Reaction, Catalytic Reaction, Double-Contact Double Absorption, DC/DA