Raw sugar and refinery practice at Busco Sugar Milling Company, Inc., Butong, Quezon. Special topic: By-product utilization.
Date
2012
Degree
Bachelor of Science in Chemical Engineering
Major Course
Major in Sugar Technology
College
College of Engineering and Agro-Industrial Technology (CEAT)
Abstract
BUSCO Sugar Milling Co.,Inc. in Butong, Quezon Bukidnon has an operating capacity of 18,000 tons cane per day. Processing of sugarcane begins with mill extraction where the collected cane juice, called mixed juice, is clarified by saccharate liming accompanied by flocculation and settling. GEnerally, clarification divides the process material into the clarified juice, which proceeds to evaporation, and the mud, which undergoes vacuum filtration. The syrup from evaporation id fed to the vacuum pans for sugar boiling, after which the resulting material, called massecuite, is centrifuged to separate the sugar crystals from the molasses. The raw sugar produced undergoes refining which begins with mingling of raw sugar with syrup to remove the film of molasses on sugar crystals. Affination produces affination syrup and affined sugar which is melted to remove occluded impurities in the sugar crystals. Carbonation proceeds wherein carbon dioxide is mixed with the pre-limed melt liquor, which precipitates calcium carbon dioxide is mixed with the pre-limed melt liquor, which precipitates calcium carbonate that entraps non-sugars and colorants. These impurities are removed through rota filtration and check filtration. Sludge collected from filtration undergoes press filtration, producing filter cake. Meanwhile, the clear liquor from carbonation is decolorized in the granulated activated carbon (GAC) and ion exchange resin (IER) columns. The resulting fine liquor is fed to the evaporators, producing concentrated liquor which goes to the vacuum pans for sugar boiling. Four types of white sugar are produced and blended into three grades of sugar: premium coke, premium, PNS grade, and standard grade. On the other hand, the by-products of the raw and refined sugar production are not entirely disposed of as waste. Bagasse is utilized by the factory itself as fuelfilter cake and final molasses are distributed to concerned industries. The industrialization of filter cake includes biogas, soil supplement, and animal feed production among others. Using old filter cake (instead of fresh) as fertilizer has shown favorable results from pot experiments, which is attributed to the high levels of nitrogen and phosphorus content in the soil. Final molasses is mostly utilized as feedstock in the production of basic chemicals such as acetone and ethanol by fermentation of its residual sugar. With small amounts of protein and B complex vitamins, final molasses is also suitable for animal feed production. Recent experiments involved the production of urea-molasses multinutrient block (UMMB), which improved reproduction, milk yield, and draft power of cattle.
Language
English
Location
UPLB College of Engineering and Agro-Industrial Technology (CEAT)
Call Number
LG 993 2012 E62 D47
Recommended Citation
De Polonoa, Richelle P., "Raw sugar and refinery practice at Busco Sugar Milling Company, Inc., Butong, Quezon. Special topic: By-product utilization." (2012). Undergraduate Theses. 3313.
https://www.ukdr.uplb.edu.ph/etd-undergrad/3313
Document Type
Thesis
