What are the preparation methods of industrial hydrochloric acid?
1. Electrolysis is is the first choice for the preparation of industrial hydrochloric acid: saturated salt water is electrolyzed to produce sodium hydroxide, hydrogen occurs in the cathode and chlorine occurs in the anode. In the reactor, hydrogen and chlorine are passed to the burner made of quartz to incinerate and produce hydrogen chloride gas, which generates a large amount of heat and after the hydrogen chloride gas is cooled. Absorbed by water into hydrochloric acid.
2. In the industrial production of hydrochloric acid, hydrogen is first ignited in the reactor, and then reacted with chlorine to produce hydrogen chloride gas, which is absorbed into hydrochloric acid by water after cooling. In the reaction process of chlorine and hydrogen, toxic chlorine gas is surrounded by excessive hydrogen gas, which makes chlorine react abundantly and avoids the reaction to chlorine gas. Air pollution, in production, often adopts another way of excessive material to make harmful, more expensive materials react abundantly.
3. Hydrochloric acid is an aqueous solution of chlorine to hydrogen. Hydrochloric acid is widely used in leather making, printing and dyeing, food, medicine, chemical industry, metallurgy and other industrial sectors. The first way to produce hydrochloric acid in industry is to directly combine chlorine with hydrogen and then absorb the hydrogen chloride gas generated by water. Hydrogen chloride is synthesized in the synthesis tower.
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