Industrial hydrochloric acid is generally produced by burning chlorine and hydrogen in a synthesis furnace to form HCL, which is absorbed by water. The temperature of the synthesis furnace is very high, and the chlorine gas reacts in contact with the steel furnace wall, causing the generated hydrogen chloride gas to be mixed with ferric chloride steam; this gas will also introduce impurity iron during pipeline transportation, and the presence of iron will cause the hydrochloric acid to turn yellow. The reagent hydrochloric acid has strict national standards for iron content, so iron removal by hydrochloric acid is of great significance in hydrochloric acid production. kingshan New Materials provides hydrochloric acid iron removal materials.