Study Of Production Technology And Reaction Mechanism Of Chlorine Dioxide Gas

The application of chlorine dioxide get development increasingly in wastes water treating,pulp bleaching, food handing, medical and health in the world. Chlorine dioxide can overcome the traditional weakness of chlorine gas in the pulp bleaching, the drinking treating etc. More and more people pay attention to chlorine dioxide because of the ability of disinfecting and bleaching. The relevant application of stable chlorine dioxide is more, but the development study of chlorine dioxide gas is less in the domestic. Therefore, it is very important and urgent currently to study forerunner production technology of chlorine dioxide gas.In this paper, sodium chlorite based chlorine dioxide production is first investigated. Effects of reaction temperature, reaction pressure, hydrochloric acid concentration, and Sodium chlorite concentration molar ratio of hydrochloric acid to Sodium chlorite chlorate on yield and purity of chlorine dioxide are studied. The optimum reaction conditions and parameters in producing chlorine dioxide are achieved. The method can generate chlorine dioxide that had some advantages such as high purity attached 99% and reclaim rate (≥91%).Based on the successful experiment in the laboratory, the technique of producing chlorine dioxide by adopting sodium chlorite is investigated, and designed a equipments to generate and absorb chlorine dioxide by distilled water.In this paper, reaction mechanism is studied. Relevant reactions of hydrochloric acid and sodium chlorite in chlorine dioxide formation and other reactions relating to chlorine are analyzed. Combining a great deal of experiment data, the production technology of preparing chlorine dioxide gas by sodium chlorite is determined. It is a foundation to develop the generator of chlorine dioxide gas.