SAT process

Sugar from sugar cane is extracted today much the same as it was 70 years ago. Sugar extracted from sugar cane is processed to become raw sugar at sugar mills and then further purified to refined sugar by energy intensive sugar refining processes. However, sugar from beet is processed to refined white sugar directly in a beet factory. Volumes of research have been conducted on nature of colorants, polysaccharide and inorganic profile of sugar process streams over the past thirty (30) years. However very few research priorities have been directed to develop a sugar process that will produce the same quality sugar at cane sugar factories that is currently provided at sugar refineries. Significant energy can be saved if white sugar can be produced directly from cane sugar mills.

Dr. Chou, while he was the managing director of Sugar Processing Research Institute during 1999 / 2000, organized and directed a team of three scientists and a research engineer to conduct a research project with specific objective to produce white sugar directly in cane sugar factories. The team succeeded in their effort and developed the "SAT" process to produce white sugar using clarified juices from a cane sugar factory in Louisiana. The process involves the use of UF membrane filtration and two FDA approved processing aid to remove non-sugar components, including color and ash, which are preferentially occluded into the sugar crystals during crystallization. Both bench scale pan at SPRI and pilot scale vacuum pan at ASI of Louisiana State University were used for the sugar boiling studies. The use of Cti process with SAT process will produce 100% of refined sugar from sugar mills directly as shown in the energy cane sugar plant diagram (click here). For the diagram of the integration of the SAT process into refinery operation click here. For SAT process as a replacement for sulfitation diagram for white sugar production click here. For the full paper describing SAT process click here.