ABSTRACT
CENIBRA Celulose Nipo-Brasileira S.A., is a Bleached
Eucalyptus Kraft Pulp producer located in Belo Oriente, MG,
Brazil, with an annual capacity of 1.2 million ADt and includes
two fiber lines. In order to modernize its existing Fiberline
01, inaugurated in 1977, a new bleach plant was installed
with TwinRoll Press Evolution (TRPE™). With a challenging
construction layout and tight startup schedule, the new
compact bleach plant started up simultaneously with Line
1’s permanent shutdown. Nominal capacity was achieved in
less than one week, resulting in minimum production losses.
With an ECF sequence DHOTEpD1
P, the bleach plant provided
a 10%-15% reduction in bleaching chemicals such as sodium
hydroxide, chlorine dioxide and hydrogen peroxide, while
sulfuric acid consumption dropped roughly 22%. Energy and
steam had their consumptions reduced around 40% and 50%,
respectively, while water consumption and effluent generation
decreased 50%. As a result, the modernization project had
an incredibly positive outcome, preserving product quality
and continuous operation while improving operational and
environmental results.
Keywords: Eucalyptus Kraft Pulp, ECF Bleaching, Washing
Machines.
O PAPEL vol. 83, N.o
1, pp. 74 - 76 - JAN 2022
Authors: Flavio M. Correia1
, Hericon L. Silva1
, J. Manoel L. Neto1
, Leandro T. Coelho1
, Andre Domingues2
, Fernando
Heinze2
, Gustavo Meller2