The damage mechanisms affecting this overhead heat exchanger included corrosion due to the formation of hydrochloric acid (HCl) from the hydrolysis of magnesium chloride (MgCL) and calcium chloride (CaCl_2); wet hydrogen sulfide (ELS) damage; use of H_2S scavengers in crude tankage; and corrosion due to the presence of ammonium chloride (NH_4Cl) and carbon dioxide (CO_2), explains NACE International member Michael Silverman, corrosion and metallurgy specialist at the Carson refinery.
展开▼
