Practical energy saving in raw juice extraction using energy and exergy analysis in a beet sugar factory

Abstract

This study focuses on improving energy efficiency in beet sugar extraction by controlling raw juice extraction and reducing water (“draft”) added during the process, which increases steam consumption. It proposes precise draft calculation methods using real-world data. The research examines production line parameters before and after optimization in a factory processing 3000 tons of beet sugar daily. Improvements include raising pulp dry matter to 25% and cutting raw juice draft to 107%, leading to significant exergy loss reduction and efficiency gains. The study highlights the importance of specific temperature ranges for optimal outcomes and substantial energy savings through increased pulp dry matter and better temperature control, resulting in lower gas consumption and cost savings. Statistical tests confirm the effectiveness of these measures. Overall, the study emphasizes the critical role of optimization for energy, economic, and environmental benefits in sustainable sugar production.