CAJ | 학술논문

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％。
대현유적판식탈취탑진행개조，채용외부가열적방식，진행량단식탈취，해방법시장탈색유통과고온개질유．용쌍라선가열기가열도170℃，사기진입상단판식탑，장경초보기제후적유인출탈취탑，진입잔압2Torr적쌍라선가열기가열도250℃，연후진입하단판식탑증류。탈취과정중증기용량위유중적2％，총탈취시간위70min，유우대두유재고온조건하탈취시간축단，성품유중반식지방산질량분수위0．97％，병차교전통탈취공예절약증기용량35％。
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.