Laporan Magang 1 Agustus-30 November 2025 di PT. Semen Bosowa Banyuwangi

Salsabilla, Aurumitha Assyafina (2026) Laporan Magang 1 Agustus-30 November 2025 di PT. Semen Bosowa Banyuwangi. Project Report. [s.n.]. (Unpublished)

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Abstract

Vertical Cement Mill (VCM) merupakan unit utama pada proses penggilingan semen yang sekaligus berfungsi sebagai sistem pengeringan material menggunakan hot gas hasil pembakaran burner. Pada operasi di PT. Semen Bosowa Banyuwangi, suhu outlet hot gas harus dipertahankan di atas 70°C untuk mencegah kondensasi yang dapat menyebabkan clogging pada sistem. Penelitian ini bertujuan menganalisis pengaruh moisture content material dan temperatur clinker terhadap suhu outlet hot gas, mengevaluasi neraca energi sistem, serta menentukan kondisi operasi optimum menggunakan simulasi Aspen Plus. Model simulasi dikembangkan berdasarkan neraca massa dan energi, kemudian divalidasi menggunakan data operasi aktual. Hasil validasi menunjukkan kesesuaian yang baik dengan nilai RMSE sebesar 1,71°C dan NRMSE sebesar 2,16%. Peningkatan moisture content sebesar 1% menurunkan suhu outlet hot gas sekitar 0,43°C akibat meningkatnya kebutuhan panas laten untuk penguapan air. Selain itu, temperatur clinker yang lebih rendah meningkatkan penyerapan panas sehingga turut menurunkan suhu outlet. Berdasarkan analisis distribusi data, temperatur clinker representatif sebesar 42°C dan moisture content optimum sebesar 2% menghasilkan suhu outlet hot gas sebesar 79,5°C, atau sekitar 9–10°C di atas batas operasi minimum. Pengendalian moisture content dan pemantauan temperatur clinker direkomendasikan sebagai strategi untuk meningkatkan efisiensi energi dan mengurangi kebutuhan heating-up tanpa modifikasi peralatan.
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The Vertical Cement Mill (VCM) is the main grinding unit in cement production and simultaneously functions as a material drying system using burner-generated hot gas. At PT. Semen Bosowa Banyuwangi, the outlet hot gas temperature must be maintained above 70°C to prevent condensation and system clogging. This study aimed to investigate the effects of feed moisture content and clinker temperature on the outlet hot gas temperature, evaluate the system energy balance, and determine the optimum operating conditions using Aspen Plus simulation. The simulation model was developed based on mass and energy balances and validated using actual plant operating data. The validation demonstrated good agreement with industrial data, yielding an RMSE of 1.71°C and an NRMSE of 2.16%. The results showed that every 1% increase in feed moisture content reduced the outlet hot gas temperature by approximately 0.43°C due to the additional latent heat required for moisture evaporation. Lower clinker temperatures also increased heat absorption from the hot gas, further decreasing the outlet temperature. A representative clinker temperature of 42°C and an optimum feed moisture content of 2% produced an outlet hot gas temperature of 79.5°C, approximately 9–10°C above the minimum safe operating limit. Therefore, controlling feed moisture content and monitoring clinker temperature are recommended to improve energy efficiency and reduce additional heating-up without equipment modification.

Item Type:	Monograph (Project Report)
Uncontrolled Keywords:	Vertical Cement Mill, moisture content, temperatur clinker, outlet hot gas, Aspen Plus.
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ1225 Milling machines numerically controlled
Divisions:	Faculty of Vocational > 24305-Industrial Chemical Engineering
Depositing User:	Aurumitha Assyafina Salsabilla
Date Deposited:	17 Jul 2026 06:18
Last Modified:	17 Jul 2026 06:18
URI:	http://repository.its.ac.id/id/eprint/135101

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