Method for preparing chlorine by oxidizing hydrogen chloride

The invention discloses a method for preparing chlorine by oxidizing hydrogen chloride. After the 98% concentrated sulfuric acid serving as a raw material is purified, key impurity sulfides in the 98% concentrated sulfuric acid are controlled, combination of the impurity sulfides and active components of the catalyst is reduced, and active sites are improved, so that the operation stability of the catalyst is improved, the service life of the catalyst is prolonged, and the production cost of liquid chlorine is reduced. 本发明公开一种氯化氢氧化制备氯气的方法。通过对原料98％浓硫酸进行净化后，控制98％硫酸中关键杂质硫化物，降低杂质硫化物与催化剂活性组分的结合，提高活性位，从而提升催化剂运行稳定性，延长催化剂使用寿命，降低液氯生产成本。