Improving the evaporation process of diaphragm caustic soda to increase the effect of separating salt from caustic soda;

Comparison of production technology and investment of diaphragm caustic soda with those of ion-exchange membrane;

Technical rennovation of diaphragm caustic soda evaporation system;

Filtrating equipment to optimizing evaporation process of diaphragm caustic soda;

Discussion on domestic climbing film process producing 73 wt% diaphragmflake caustic soda from 45 wt% diaphragm caustic soda by one-step concentration;

Discussion on innovation of diaphragm caustic soda evaporation process;

Influence of frequently up and down of electric current on diaphragm caustic soda production unit;

The old process of removing SO2-4 from the recovered salt in the production of diaphragm caustic soda is introduced as well as the new technique.

Discussion on the advantages and disadvantages of diaphragm process for the production of caustic soda;

Contrast of the domestic caustic soda costs between ion-exchange membrane process and diaphragm process;