Commercial sulfuric acid is a cheap commodity and in its dilute and impure form does not have good market potential. Disposal by neutralization with lime is associated with, problems of solid (calcium sulfate) handling and also adds to the cost. To overcome these problems GOEL offers know-how, design engineering services of sulfuric acid concentration system in which the dilute sulfuric acid generated is re-concentrated to desired level for reuse. That is to say a twofold benefit of eliminating the disposal problem and minimizing fresh commercial acid requirement. The process is extremely simple & involves concentration of dilute sulfuric add by evaporation using steam/thermic fluid as heating media under vacuum. The dilute feed is preheated & fed to a series of evaporators in stages to achieve the concentration level. The vapors from the evaporators are condensed and drained out through barometric legs and non-condensable are removed by an ejector. The final product is cooled and drawn in the storage tank.