CD Tugas Akhir
“Analisis Faktor-Faktor Yang Memengaruhi Brightness Pulp Pada Tahap D0 Fiberline 1”
ABSTRACT
The pulp bleaching process at PT Riau Andalan Pulp and Paper (RAPP) uses
ECF (Elemental Chlorine Free) technology which uses chlorine dioxide (ClO2)
chemicals. The value of the degree of brightness (brightness) of the pulp obtained
at the D0 bleaching stage is influenced by several factors. These factors originate
from the condition of the pulp after the oxygen delignification stage and the
conditions of the pulp bleaching process at tower D0. These parameters are the
unbleach kappa number, 2nd post oxygen brightness, reaction temperature,
reaction pH, retention time, ClO2 charge, soda carry over and Chemical oxygen
demand (COD). The target brightness to be achieved after the D0
(delignification) stage in Fiberline 1 is 70 - 72% ISO. The aim of this final project
is to determine the parameters that affect pulp brightness at stage D0
(delignification) fiberline 1, determine the parameters that have the most impact
on pulp brightness at stage D0 (delignification) fiberline and determine the
parameters that individually have little effect on pulp brightness. at stage D0
(delignification) fiberline 1. From the results of the analysis it can be concluded
that all factors have an influence on the brightness produced at stage D0
(delignification). Brightness 2nd post oxygen has an effect of 95.16 %.
Temperature has an effect of 84.2 %. The unbleach kappa number has an effect of
92.4 %. pH has an effect of 94.02 %. ClO2 charge has an effect of 88.57 %.
Retention time has an effect of 73.30 %. The carry-over soda has an effect of
61.86 %. COD has an effect of 52.69 %.
Keywords : ECF (Elemental Chlorine Free), Bleaching, Brightness, chlorine
dioxide (ClO2)
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