DSC meaning in oil and gas

Caustic is used in other units to remove impurities from process streams. The used caustic, called ‘spent caustic’, is sent back to the Caustic and Acid unit to have these impurities removed and the remaining liquid neutralized. <p> <p> The addition of acid to caustic causes an exothermic reaction.<p> <p> Not only is heat released, but quite a bit of the H2S is also released from the reaction with acid. <p> <p>