Pulp and paper

Pulp mills for bleaching

A variety of chemicals are required by pulp mills for bleaching, the main bleaching agent being chlorine dioxide (ClO2).

Hydrogen and chlorine recovered from NaClO3 and ClO2 processes are combined in a Sintaclor synthesis unit to produce HCl which is reinjected in the NAClO3 process.

Waste water treatment

At present, paper production (cooking, washing, bleaching, drying, etc.) generates a large quantity of waste water that needs to be treated. Mersen provides Graphite or SiC heat exchangers for PAC production. 

Power transfer

Mersen proposes electrical solutions all along the pulp & paper process in paper, cardboard and tissues factories.

• Carbon brushes that are widely used by major OEMs in the motors and generators of pulping machines, winders, rollers, driers, etc.
• Brush-holders that are designed to ensure excellent brush performance in difficult conditions
• Signal and Power Transfer Systems SPTS for transfers between static and rotating parts
• Slip ring assemblies for all types of machines

Service and maintenance

We provide maintenance and training services for customers.

• Our maintenance tools are designed and developed for optimal maintenance
• Our service experts provide on-site diagnostics and in-situ maintenance services for all rotary machines
• Our Stagelec and Extelec training programs help maintenance personnel develop their working knowledge of the machines they operate and their performance 

Mersen offers mechanical and sealing solutions for the pumps operating in the different stages of the process.

Today’s Pulp and Paper industries are more and more concerned with the safety of workers and equipment, achieving optimal power efficiency and avoiding downtime where possible.

The protection of critical loads and asset management are also key concerns. Mersen has it all — from overcurrent protection to surge protection, cooling and interconnection solutions — meeting the needs of Pulp & Paper industry market players in power distribution or power conversion alike.