CD Tesis

Modeling Profil Aliran Pulp Slurry Di Pipa Distribusi Produk Akhir Bleaching Plant

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In the pulp industry it is often to encounter high energy consumption, some
of which is due to sub-optimal equipment design. One of the main findings is
pipeline as pulp slurry transportation because the use of empirical correlations is
out of scope of application, such as different levels of pulp consistency and
average flow velocity are applied. Although the process steps are based on the
same principle, the different process conditions will affect the flow of the pulp
slurry which causes high energy consumption. Therefore, the numerical method of
predicting pulp slurry flow is very important with the application of
Computational Fluid Dynamics (CFD) strategy to predict pulp slurry flow is the
main motivation of this research.
Computational Fluid Dynamics (CFD) was performed with ANSYS Fluent
2022 R2, Student Version. Multiphase Mixture was selected as the Model for a
10% consistency of pulp slurry flow. Approach with behavior of the non-
Newtonian pulp suspension is applied by relating the viscosity to the strain rate.
The model also considers the wall function of the k-ε Reynolds turbulence model.
The computational process is carried out with parameters obtained from the field
and literature so that the velocity and concentration profiles are obtained. Model
predictions were validated by the pressure drop of the pulp slurry flow.
The modeling results show that the flow characteristics are turbulent with
an uneven shape like plug flow at a fully developed position at an elevation of Y =
4,85 m and a direction of Z = -2,55 m. The flow velocity near the wall decreased
significantly and the maximum speed was 0.975 m/s at the centerline of the pipe
with an average consistency of slurry pulp relatively uniform at 8.72% at the fully
developed position, but it can be seen from the consistency contour that the
tendency of cellulose or solid occupy the bottom of the pipe. Viscosity also affects
the flow rate of the pulp slurry flow. The pressure drop occurs because part of the
flow pressure is converted to dynamic pressure to achieve the pulp slurry flow in
the pipe. The total pressure inlet is 1335486.45 Pa and the total pressure outlet is
1267085.25 Pa.
Key Words : ANSYS, CFD, Medium Consistency, Pulp Slurry, Velocity Profile

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

1810246963

Penerbit

Pekanbaru : Universitas Riau – Pascasarjana – Tesis Teknik Kimia., 2023

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

1810246963

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

FATAH

Versi lain/terkait

Lampiran Berkas

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