How is the waste liquor of pulping equipment recovered?

Pulping Waste Liquor Recovery of Pulping Equipment

1) alkali recovery technology: (1) traditional alkali recovery technology of wood pulp; (2) alkali recovery technology of straw pulp; (3) direct alkali recovery (DARS method) (there is no successful example of production); (4) comprehensive utilization of white mud;

2) Development of process and equipment for improving black liquor extraction and evaporation efficiency;

3) Treatment of paper-making black liquor by plasma (there is no successful application in production yet).

4) Comprehensive utilization of cooking waste liquor;

5) Production of biogas by lime semi-chemical pulp (pilot test success)

Washing and bleaching section of pulping equipment

1) chlorine dioxide bleaching process; 2) chlorine-free bleaching process (large investment, high cost);

5. Papermaking Section

White Water Recycling Technology of Paper Machine

6. Comprehensive Wastewater Treatment System

Biochemical treatment technology of wastewater outside the factory environment-friendly technology in paper industry