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过程工程学报 ›› 2017, Vol. 17 ›› Issue (2): 278-284.DOI: 10.12034/j.issn.1009-606X.216282

• 过程与工艺 • 上一篇    下一篇

超声制备甲醇乳化柴油影响因素的响应面法优化

李晓霞1,2*,余丽胜1,2,王永红1,2,刘有智1,2,焦纬洲1,2   

  1. 1. 中北大学山西省超重力化工工程技术研究中心,山西 太原 030051
    2. 超重力化工过程山西省重点实验室,山西 太原 030051
  • 收稿日期:2016-08-30 修回日期:2016-10-18 出版日期:2017-04-20 发布日期:2017-04-19
  • 通讯作者: 焦纬洲
  • 基金资助:
    自然科学基金项目

Optimization on the Factors of Ultrasonic Preparation Methanol Emulsified Diesel by  Response Surface Method

LI Xiao-xia1,2,  LIU You-zhi1,2, JIAO Wei-zhou1,2*,  YU Li-sheng1,2,  WANG Yong-hong1,2   

  1. 1. Res. Center of Shanxi Province for High Gravity Chem. Eng. & Technol., North University of China, Taiyuan, Shanxi 030051, China;
    2. Shanxi Province Key Laboratory of Higee-Oriented Chemical Engineering, Taiyuan, Shanxi 030051, China
  • Received:2016-08-30 Revised:2016-10-18 Online:2017-04-20 Published:2017-04-19
  • Contact: JIAO Wei-zhou

摘要: 甲醇乳化柴油是环保节能燃料。本文通过正交实验筛选乳化剂配比,得出适宜的乳化剂质量比为m(油酸):m(Span-80):m(OP-10):m(Tween-80):m(羧甲基纤维素钠)=14:5:2:1:5,HLB值为4.48。采用高速分散器预乳化,超声波装置深度乳化,考察超声作用时间、超声作用功率、甲醇含量和乳化剂含量等因素对甲醇乳化柴油稳定性的影响。在单因素实验基础上,基于Box-Behnken实验设计,利用Design-Expert数据分析软件的响应面分析法,优化了工艺条件,并建立了以甲醇乳化柴油稳定时间为响应值的工艺数学模型。结果表明:对甲醇乳化柴油稳定性影响因素从大到小的顺序为乳化剂含量、超声作用功率、甲醇含量、超声作用时间,交互作用从强到弱依次为:超声作用时间和功率、超声作用功率和乳化剂含量、甲醇含量和乳化剂含量、超声作用时间和乳化剂含量、超声作用时间和甲醇含量;最优工艺条件为超声作用时间20min、超声作用功率220W、甲醇含量10%、乳化剂含量5%。对上述最优工艺条件进行实验验证,稳定时间与预测值的相对偏差为2.69%,说明响应面拟合方程可用于超声制备甲醇乳化柴油稳定性的预测和最优工艺条件的确定。

关键词: 超声波, 甲醇, 乳化柴油, 响应面, 优化设计

Abstract: Methanol emulsified diesel was environmental friendly and energy-saving fuel. In this paper, the emulsifier ratio was optimized by orthogonal experiment, concluded that the appropriate emulsifier mass ratio was: m(oleic acid): m(Span-80): m(OP-10): m(Tween-80): m(carboxymethyl cellulose sodium)= 14:5:2:1:5, and HLB value was 4.48. Pre-emulsified stage used high speed disperser, depth emulsification stage used ultrasound emulsification device. Effect of ultrasonic time, ultrasonic power, methanol content and emulsifier content factors on the stability of methanol emulsified diesel was investigated. Based on the experiment of single factor, the mathematical model of ultrasonic preparation methanol emulsified diesel was established with the Box-Behnken model of response surface methodology in Design-Expert software, and these technical parameters were optimized. The result shows that the influence degree of the stability of methanol emulsified diesel from large to small was emulsifier content, ultrasonic power, methanol content and ultrasonic time, The interaction from strong to weak was ultrasonic time and power, ultrasonic power and the emulsifier content, methanol content and emulsifier content, ultrasonic time and the emulsifier content, ultrasonic time and methanol content. The optimized technological parameters were as follows: ultrasonic time was 20min, ultrasonic power was 220W, methanol content was 10%, emulsifier content was 5%. Above the optimum process conditions experiments, the relative deviation of the stabilization time and the predicted value was 2.69%, the mathematical model of response surface fitting equation can be used to determine and predict optimum conditions of ultrasound production of methanol emulsified diesel.

Key words: ultrasonic wave, methanol, emulsified diesel, response surface, optimal design