Title: Improved low-temp and strong-alkali sulphurous acid method for refining process in cane sugar prodn.
Application Number: 91104439 Application Date: 1991.06.27
Publication Number: 1068145 Publication Date: 1993.01.20
Approval Pub. Date: Granted Pub. Date: 1995.08.23
International Classifi-cation: C13D3/10
Applicant(s) Name: Inst. of Light Industry Science ,Yunnan Prov. Address: 650031
Inventor(s) Name: Li Yakun, Li Zhifeng
Attorney & Agent: MENG RONGYING
Abstract:
     This invention discloses a method to improve the quality and recovery rate of white granulated sugar produced by sulfurous acid method. Based on the clarification technology of sulfurous acid method, a technology route including high-alkali (pH=11) impurity-removal and auxiliary clarification by phosphoriv acid is added. Two isoelectric points (pH 11 and 7 ) are used to perfrom twice separations by sink-float and precipitation. The method features low investment and high clarification effect, such as average colour value of clarified liquid: 2154 ICUMSA; average opacity: 737; colloid-removing rate: 53.8% and improved purity: AP 3.64 and GP 2.73.
Time: 11
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