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Parameter Kontrol Yang Memengaruhi Nilai Brightness Tahap Eop Proses Bleaching Fiberline #1

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ABSTRACT
The bleaching process is the final stage of bleached kraft pulp process using
bleaching chemicals in the form of ClO2, NaOH, O2, and H2O2. The pulp
bleaching system used by PT.RAPP is the Elemental Chlorine Free (ECF) system
that is chlorine dioxide (ClO2). Bleaching sequence in Fiberline 1 consists of
three stages, that is D0, EOP, and D1. The success of the bleaching process cannot
be separated from the parameters that influence each stage of the process.
Chemicals added at the EOP stage are NaOH, O2, and H2O2. NaOH is used to
provide an alkaline atmosphere and dissolve lignin that has been separated at the
D0 and O2 stages used for the oxidation process. Hydrogen peroxide (H2O2) is
added as bleach from pulp. One of the quality parameters in the EOP stage is
brightness. Brightness shows the amount of reflection of blue light with a
wavelength of 457 nm from an opaque samples of pulp sheet compared to
specified standards surface. The target brightness at the EOP stage is 80 – 85%
ISO. To achieve this brightness target, there are several control parameters that
must be maintained including brightness pulp D0 (%ISO), end tower pH EOP, O2
charge (kg/Adt), H2O2 charge (kg/Adt), NaOH charge (kg/Adt), and retention time
(minutes). The results obtained show that brightness D0 has an effect of 84%, pH
on the EOP tower has an effect of 64%, O2 charge EOP has an effect of 57%,
H2O2 charge EOP has an effect of 77%, NaOH charge EOP has an effect of 66%
and the retention time of the EOP reactor has an effect of 65%. The most
influential parameter on EOP brightness is brightness D0 and H2O2 charge
because it has the highest determination value.
Keywords: bleaching, brightness, EOP stage, H2O2 charge, NaOH charge, O2
charge

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

07 02. 021 (0041)

Penerbit

Pekanbaru : Universitas Riau – Fakultas Teknik - Teknologi Pulp Dan Kertas D III., 2021

Deskripsi Fisik

x, 66 hlm.; ill.: 29 cm

Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

07 02. 021 (0041)

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

TEKNIK KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

Daus

Versi lain/terkait

Lampiran Berkas

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