AbstractHydrochloric acid is an important inorganic chemical raw materials,under normal light yellow or colorless liquid, a strong irritating odor. Is avolatile acid, but also a very strong inorganic acid. Hydrochloric acid iswidely used in the production of rare metals, such as hvdrometallurgv,organic synthesis, bleaching and dyeing industry, metal cleaningprocessing,food industry, oil pickling, inorganic pharmaceuticals andorganic pharmaceuticals. In addition, hydrochloric acid is also used inprinting and dyeing industry, leather industry, medicine, food and otherindustries. With the continuous development and progress of society, thedemand for hydrochloric acid in various industries is also growing.Therefore, in order to meet the market demand, the need for hydrochloricacid production plant to optimize the design, the process optimization andimprovement to improve production capacity.