Simulasi Entrained Flow Gasifier Untuk Batubara Kualitas Rendah

Hidayat, Ilman Alkautsar (2009) Simulasi Entrained Flow Gasifier Untuk Batubara Kualitas Rendah. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penelitian ini bertujuan untuk mengkaji secara teoritis berbasis CFD proses gasifikasi batubara kualitas rendah di dalam gasifier bertekanan rendah mengenai pengaruh rasio 02/coal terhadap distribusi temperatur dan distribusi produk Geometri gasifier yang digunakan berbentuk silinder dengan ukuran gasifier L/D=10,25 dengan D=0,2 m. Batubara diinjeksikan kedalam gasifier dalam bentuk campuran setelah dicampur air dengan konsentrasi 40% berat melalui lubang utama (Primary Inlet) dengan ukuran 0.003m pada temperatur 300 K. Oksigen diinjeksikan melalui secondary inlet dengan diameter 0,001328 m pada temperatur 300 K. Jenis batubara yang digunakan adalah batubara Senakin yang berasal dari Kalimantan yang termasuk ke dalam tipe batubara subbituminous dan oksigen sebagai oksidiser. Variabel yang digunakan adalah rasio massa 02/coaI 0.79; 0.89; 1.01. Hasil yang diperoleh dalam simulasi tiga dimensi berupa distribusi temperatur, distribusi fraksi massa produk untuk rasio Ofcoal yang berbeda. Sernakin tinggi rasio Of coal temperatur juga semakin tinggi. Kenaikan rasio Ofcoal menyebabkan jumlah produk H2 dan CO menurun tetapi jumlah produk C02 meningkat. ================================================================================================== Computational Fluid Dynamics can be used to analize the effect of massflow inlet oxygen - coal on fluid flow profile and product distribution on low rank coal gasification process in a gasifier. Cylinder geometry is used for gasifier with L/D = 10.25 where D = 0.2 m. Coal water mixture with 40% concentration of water injected into gasifier through primary inlet which size 0.003 m at 300K. Pure Oxygen injected through secondary inlet which size 0.001328 m at 300K. Coal type which applied is Senakin coming from Kalimantan which included into type subbituminous coal and oxygen as oksidiser. Variabel which applied is various Ofcoal ratio 0.79; 0.89; 1.01. The results of this research are showed, temperature distribution, mass fraction of gasification product distribution for different ratio Ofcoal. The results of this research are showed, temperature distribution, mass fraction of gasification product distribution for different ratio Ofcoal. An increase in the Ofcoal ratio decreases the H2 and CO concentration but increases the C02 concentration in the product gas.

Item Type: Thesis (Undergraduate)
Additional Information: RSK 665.772 Hid s
Uncontrolled Keywords: Gasifikasi, batubara, syngas, rasio Ofcoal
Subjects: T Technology > TN Mining engineering. Metallurgy
T Technology > TP Chemical technology
Divisions: Faculty of Industrial Technology > Chemical Engineering > 24201-(S1) Undergraduate Thesis
Depositing User: EKO BUDI RAHARJO
Date Deposited: 21 Jan 2022 08:43
Last Modified: 24 Jan 2022 07:37
URI: https://repository.its.ac.id/id/eprint/92459

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