Environmentally sustainable bleaching
Perhaps the biggest change in a short period of time has taken place in pulp bleaching. The reason for this is the great number of environmental restrictions set during the 1990s.
Today, fully bleached pulp can be produced with short sequence bleaching processes. Modern bleaching processes are built to enable either elemental chlorine free (ECF) or totally chlorine free (TCF ) bleaching.
Both pulps can be produced in the same installation, with no equipment modifications, only the bleaching sequence which is different.
Valmet's scope of delivery covers all key components for effective bleaching processes, including design, engineering, control and auxiliaries such as chemical mixers, agitators, pulp heaters and MC-pumps.