The Experience of ECF Bleaching Plant Operation

Abstract

Kishu mill, Kishu Paper fiber line was converted to ECF bleaching sequence in August2004. This plant was introduced to the hot chlorine dioxide process (DUAL-D) , and this bleaching sequence has D*-EP-D.
Also D*stage tower was adopted the gravity feed system (Difeed system) with the first installation in the world.
Bleached pulp qualities has mostly expectation, especially brightness reversion is very low level.
D*:hot chlorine dioxide stage