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Position: Home > Articles > Characteristics of Two-stage Deodorizer and Optimization of Oil Deodorization FOOD SCIENCE 2011,32 (14) 139-143

两段式脱臭塔特性及油脂脱臭工艺条件优化

作  者：
李振岚;陈晓慧;江维;张立国;于殿宇
单  位：
哈尔滨工大高新技术产业开发股份有限公司;东北农业大学食品学院
关键词：
大豆油;两段式脱臭;残压;反式脂肪酸
摘  要：
对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,将脱色油通过双螺旋加热器加热到170℃,使其进入上段板式塔,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248℃,然后进入下段板式塔蒸馏。脱臭过程中上段脱臭塔中蒸汽用量为油质量的1%,下段脱臭塔中蒸汽用量为油质量的2%,脱臭时间45min,油在脱臭塔中滞留的时间大大缩短,油脂中反式脂肪酸相对含量仅为1.15%,是一种绿色、节能的新型脱臭设备。
译  名：
Characteristics of Two-stage Deodorizer and Optimization of Oil Deodorization
作  者：
LI Zhen-lan1,CHEN Xiao-hui1,JIANG Wei2,ZHANG Li-guo2,YU Dian-yu1(1.School of Food Science,Northeast Agricultural University,Harbin 150030,China;2.Harbin Gongda High-tech Enterprise Development Co.Ltd.,Zhongda Plant Protein Branch,Harbin 150038,China)
关键词：
soybean oil;two-stage deodorization;residual pressure;trans-fatty acids
摘  要：
In this study,tray type deodorizer was modified by external heating strategy to achieve two-stage deodorization.In this deodorization process,decolorized soybean oil was heated by double-helix heater to the optimal temperature of 170 ℃.After the oil entered the upper section of tray type column,primary gas stripping was carried out.Then,the oil was again transferred to double-helix heater where the residual pressure was set at 2 Torr and heated to 248 ℃ before distillation in the bottom section of tray type column.Steam amount in the upper section of tray type column represented 1% of total oil weight and in the bottom section 2%,and the total deodorization time was set at 45 min.As a result,oil retention time in deodorizer was largely shortened and the trans-fatty acids content in soybean oil was only 1.15%.Therefore,two-stage deodorizer reveals pollution-free and energy-saving properties.

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