棕榈酸异戊酯的制备及酯化反应复合影响因素的数学模型  

Mathematical Model of Preparation of Isoamyl Palmitate and Compound Influencing Factors of Esterification Reaction

作　　者：王碧灿 李法社[1,2] 倪梓皓 王霜[1,2] 隋猛 Wang Bican;Li Fashe;Ni Zihao;Wang Shuang;Sui Meng(School of Metallurgical and Energy Engineering,Kunming University of Science and Technology,State Key Laboratory for Clean Utilization of Complex Nonferrous Metal Resources,Ministry of Education,Kunming 650093;Engineering Research Center of Energy Saving and Emission Reduction,Ministry of Education,Kunming 650093)

机构地区：[1]昆明理工大学冶金与能源工程学院,省部共建复杂有色金属资源清洁利用国家重点实验室,昆明650093 [2]冶金节能减排教育部工程研究中心,昆明650093

出　　处：《中国粮油学报》2020年第11期67-71,共5页Journal of the Chinese Cereals and Oils Association

基　　金：NSFC-云南联合基金(U1602272);云南省自然科学基金面上项目(2015FB128)。

摘　　要：生物质燃油因其可再生且环保等特性获得广泛应用,但相较于传统柴油来说,其运动黏度、表面张力等物性参数较大,使得整体雾化质量较差,影响燃烧性能。所以普遍的方法是使生物质燃油与酯类发生酯化反应,将其转化为相应的生物柴油,达到优化雾化质量的目的,其中参数酯化反应转化率对于评价实验过程经济性和可靠性至关重要。对生物柴油酯化反应的转化率进行了研究,以棕榈酸和异戊醇为反应物,离子液体为催化剂进行酯化反应。采用拟合系数定常回归法研究反应时间、反应温度、催化剂用量和醇酸摩尔比4个因素对制备棕榈酸异戊酯酯化反应复合作用的数学模型,得到了棕榈酸异戊酯反应转化率与4个影响因素的函数关系。运用此数学模型计算所得酯化转化率95.02%,与在实验反应时间、反应温度、醇酸摩尔比、催化剂用量分别为60 min、90℃、10∶1、6%时与95.35%的换算率相比,相对误差仅为0.35%,这表明数学模型的可靠性和准确性很高,可应用于实际对类似酯化反应进行预测。Biomass fuel has been widely used due to its renewable and environmental protection characteristics.However,compared with traditional diesel fuel,biomass fuel's physical parameters,such as kinematic viscosity and surface tension,are much highe,which makes the overall atomization quality worse and thus affects combustion performance.Therefore,a common method is adopted in this paper to make an esterification reaction between biomass fuel oil and esters.In this way,we could convert it into corresponding biodiesel to achieve the purpose of optimizing the atomization quality.Among them,the parameter conversion rate of the esterification reaction is important for evaluating the economical and Reliability matters.In addition,the conversion of biodiesel esterification was studied in this study.Esterification was carried out using palmitic acid and isoamyl alcohol as reactants and ionic liquid as catalyst(reaction time,reaction temperature,amount of catalyst,and the use of the molar ratio).The mathematical model of the compounding effect of four factors on the preparation of isoamyl palmitate esterification was studied by using the fitting coefficient steady regression method,and the functional relationship between the reaction conversion rate of isoamyl palmitate and the four influencing factors was also obtained.The research showed that:this mathematical model was used to calculate the esterification conversion rate of 95.02%,when the experimental reaction time,reaction temperature,molar ratio of alkyd,and catalyst dosage are 60 min,90℃,10∶1,6(%,ω),respectively.Compared with the conversion rate of 95.35%,the relative error was only 0.35%,which indicates that the reliability and accuracy of the mathematical model was very high and could be used to actually predict similar esterification reactions.

关 键 词：棕榈酸异戊酯 催化酯化 离子液体 拟合系数定常回归法 数学模型 

分 类 号：TK6[动力工程及工程热物理—生物能]