大豆油氢化反应釜数值模拟及工艺优化  

Numerical Simulation of Reaction Kettle and Optimization of Reaction Conditions for Soybean Oil Hydrogenation

作　　者：张青[1] 张鲁[1] 邹德智[1] 梁宝生[1] 刘丹怡[1] 江连洲[1] 于殿宇[1] 王立琦[2] ZHANG Qing;ZHANG Lu;ZOU Dezhi;LIANG Baosheng;LIU Danyi;JIANG Lianzhou;YU Dianyu;WANG Liqi(School of Food Science and Technology, Northeast Agricultural University, Harbin 150030, China;School of Computer and Information Engineering, Harbin University of Commerce, Harbin 150028, China)

机构地区：[1]东北农业大学食品学院,黑龙江哈尔滨150030 [2]哈尔滨商业大学计算机与信息工程学院,黑龙江哈尔滨150028

出　　处：《食品科学》2017年第6期253-260,共8页Food Science

基　　金："十三五"国家重点研发计划重点专项(大豆油绿色制造关键技术及大型智能化装备研发与示范项目)(2016YFD0401402);国家自然科学基金面上项目(CO2超临界状态下定向氢化TFAs油脂方法及分子机理的研究)(31271886)

摘　　要：以一级大豆油为液相、Pt/C催化剂为固相,釜体为圆柱体,釜体高度为180 mm,内径为120 mm,液面高度为130 mm,利用FIUENT软件对大豆油氢化反应釜进行液固两相数值模拟,发现倾斜式搅拌桨距反应釜底部高度80 mm、桨叶直径40 mm、搅拌速率300 r/min时流体流动及催化剂分布最佳,并以模拟的主要参数制备了高压反应釜。高压反应釜内一级大豆油添加量90.0 g、Pt/C催化剂添加量0.15%(m/m),充入8 MPa的CO2气体,后充入H2保持反应釜内总压为12 MPa,通过优化得出最佳反应温度97℃、反应时间87 min、搅拌速率285 r/min时,氢化后大豆油的碘值为79.50 g I2/100 g,说明模拟准确,为展示大型设备油脂氢化过程提供理论依据。The hydrogenation of soybean oil in a cylindrical reaction kettle(180mm high with an internal diameter of120mm)with first-grade soybean oil as liquid phase and Pt/C catalyst as solid phase was investigated by numerical stimulation usingthe FIUENT software.It was found that the fluidity of the liquid phase and catalyst distribution were optimal using a tiltingblade40mm in diameter80mm above the bottom of the reaction kettle at a stirring speed of300r/min.A high pressurereaction kettle was developed using the major simulation parameters.After adding90.0g of first-grade soybean oil and0.15%Pt/C catalyst(m/m)to the reaction kettle,CO2was initially introduced to a pressure of8MPa,followed by H2to a finalpressure of12MPa.Under the optimized reaction conditions:temperature,97℃;time,87min;and stirring speed285r/min,the iodine value of hydrogenated oil was79.50g I2/100g.In conclusion,the simulation was accurate and thus could providethe theoretical basis for displaying the hydrogenation process in large equipment.

关 键 词：大豆油氢化 数值模拟 催化剂分布 高压反应釜 模拟准确 

分 类 号：TS223.6[轻工技术与工程—粮食、油脂及植物蛋白工程]