Numerical Study for Alternative Design of Two Cyclones and a Calciner on a Cement Plant

• Main Author: Pramudhiya A T, R
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/40747
• Institution: Institut Teknologi Bandung

Suspension preheater is an equipment in cement production plant that serves as the place for kiln feed preheating up to 800-9000C and kiln feed precalcination up to 80-90%. One of the disadvantage in using conventional suspension preheater is the high elevation of construction needed to support the preheater. Elevation of a preheater construction can reach as high as 100 m, causing high construction cost and high operation cost. This study is intended to support efforts reducing suspension preheater construction height in order to reduce construction investment costs and operating expensesin kiln feed transport. In this study, research object is limited to a segment of lower part a ILC suspension preheater that consist of calciner, lower cyclone, and upper lowest cyclone in a cement plant with 8000 TPD capacity. Thermal and fluid performance were evaluated with computational fluid dynamics (CFD) simulation and would be used as criteria in assessing the success of the proposed design. Overall heat transfer coefficient between hot gas and kiln feed particle while in the suspension preheater system will be evaluated as additional performance criteria. From this research, it can be concluded that the height of lower part of suspension preheater likely to be reduced up to 26.39%, while the energy to lift and transport the kiln feed is also likely to be lowered 16.67% even though the ID fan work would have to increase by 8.25%, while maintaining same thermal performance and production process currently used widely in cement plants.