Advanced Technological cum Efficient Options in Manufacture of Sulphuric Acid

摘要

The sulphuric acid industry faces challenges such as energy efficiency,cost constraints and environmental concerns.Proven to withstand the harsh conditions of acid plants,broad portfolio of corrosion-resistant heat exchangers provides outstanding heat transfer required for process efficiency.These are from weak acid coolers,drying tower coolers and intermediate absorption tower coolers to final absorption tower coolers,product acid coolers,oleum coolers and oleum interchangers.The technology provides formidable thermal efficiency for heat transfer,heat recovery and other duties associated like pollution control with sulphuric acid production.Sulphuric acid involves highly aggressive operating environments.The process technology has a wide selection of corrosion-resistant plate materials and durable,highly resilient gaskets tailored to fit the most demanding sulphuric acid duties.With vast industry expertise,we have to select the right material to match the sulphuric acid process thereby ensuring reliable operation,heat recovery and uptime.The substantial quantities of heat released by the large-scale production of sulphuric acid represent revenues to be harnessed.Many technology suppliers of the world have varied heat recovery technology options to maximise gain.Over the past few decades,energy recovery in sulphuric acid plants,like the contact process itself,has stabilized around a few key design features.Most companies require the recovery of as much process heat as possible to produce high pressure steam,which can be used to produce power or run other turbines in the plant.The development of low temperature economizers in the 1980s caused sulphuric acid plant energy efficiency to peak.With approximately 70% of available heat converted into high pressure steam,and with the remaining 30% lost to the atmosphere or to cooling water in the strong acid system,the industry seemed to have reached maximum energy efficiency.The different commonly available sulphuric acid plant designs have their own relative merits and drawbacks and the same are discussed in the paper.