高效节能脱臭塔降低成品油中反式脂肪酸技术研究  

The reduction of trans-fatty acid technique in product oil by two-stage deodorizer

作　　者：罗淑年 李振岚[2] 王妍[2] 李越[2] 胡立志[2] 于殿宇[2] 周雁[3] 

机构地区：[1]九三粮油工业集团有限公司,哈尔滨150090 [2]东北农业大学食品学院,哈尔滨150030 [3]浙江工商大学,杭州310035

出　　处：《大豆科技》2011年第6期27-30,共4页Soybean Science & Technology

基　　金：黑龙江省科技攻关计划项目"低反式脂肪酸大豆油脂生产关键技术研究与开发"(GA09B401-3);国家科技支撑计划项目"大豆油加工关键技术和装备研究与示范"(2011BAD02B01)

摘　　要：对现有的板式脱臭塔进行改造,采用外部加热的方式,进行两段式脱臭,该方法是将脱色油通过高温介质油,用双螺旋加热器加热到170℃,使其进入上段板式塔,将经初步汽提后的油引出脱臭塔,进入残压2Torr的双螺旋加热器加热到250℃,然后进入下段板式塔蒸馏。脱臭过程中蒸汽用量为油重的2%,总脱臭时间为70min,由于大豆油在高温条件下脱臭时间缩短,成品油中反式脂肪酸质量分数为0.97%,并且较传统脱臭工艺节约蒸汽用量35%。The two-stage deodorization in processing product oil was introduced. The method is based on modified tray deodorizer with external heating system. The general process is that after passing the high temperature medium oil, the decolored oil was heated to 170 ~C through Double-helix heater, and flew into the upper section of tray column. After removing the low boiling point materials, deodorizing temperature was adjusted to 250℃ through Double-helix heater where the pressure was around 2Torr. Then the oil came into the lower section of tray column. In the process of deodorizing, the stream consumption in the upper section was 2% of the oil weight. The total deodorizing time was 70min, and thus the retention time of the oil in the deodorizer was greatly shortened and the trans-fatty acids content in the product oil was only 0.97%. This method saved 35% of stream than traditional deodorizing technology.

关 键 词：大豆油 两段式脱臭 残压 反式脂肪酸 

分 类 号：TS223.6[轻工技术与工程—粮食、油脂及植物蛋白工程]