Stock Preparation (De-inking + Wet End)

Chemical process adding alkali and detergents remove the printing inks and increase the whiteness and purity of new "grades" of pulp.

Deinking, bleaching and waste water treatment chemicals

Deinking & bleaching additives	Waste water treatment
Sodium silicate Sodium hydroxide Hydrogen peroxyde Sodium hydrosulfite Soap and foaming agents Calcium chlorure EDTA Dithionite FAS Sulphuric acid	Coagulant Flocculant Micro particules

Wet-end chemical supply systems
Stage consisting of adding auxiliary chemicals and additives to the stock to control process efficiency and improve paper properties.

Wet-end chemicals

Product additives	Process additives
Fillers Cationic starch Internal sizing agents Dry-strength agents Wet-strength agents Dyes and colour pigments Fluorescent whitening agents	Drainage agents and retention aids Pitch control chemicals Defoamers Slimicides Deposit control agents Speciality chemicals for boil out

Continuous ASA emulsification unit
Alkenyl succinic anhydride is one of the most frequently used additives in wet end chemistry.

The ASA emulsifier is a continuous preparation system designed to emulsify ASA with cationic starch and deliver the emulsion directly to the paper machine.

Application
High quality size emulsification with all polymers, modified starches and cooked starch chemistries.

Benefits

• Continuous output capacity
• Emulsion with homogeneous particle size distribution.
• Automatic delivery flow-rate adjustment according to paper machine consumption.

Cationic starch conversion unit
Cationic starches are used as retention aids and dry-strengh addivites to improve paper strength properties and drainability.

ABB starch jet cooker with its in-line high-efficiency steam heater ensures the complete cooking of slurries of cationic starch by a uniform heating with minimal pressure drop.

Application
Wet end starch cooking. For all types of cationic starches: corn, potato, tapioca, wheat, maize, etc.

Benefits

• Easy installation and operation
• Excellent end-product quality
• Smooth operation
• Low operational costs