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两步法催化废白土油制备生物柴油的研究
Two-step catalytic production of biodiesel from waste clay oil
  
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中文关键词:  废白土油  两步法  生物柴油  酯化  酯交换
英文关键词:waste clay oil  two-step method  biodiesel  esterification  transesterification
基金项目:
Author NameAffiliation
GAO Xiaolong  
TAN Chuanbo  
WU Suxi  
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中文摘要:
      以废白土油为原料，采用酯化和酯交换两步法制备生物柴油。选用硫酸铁作为酯化催化剂，选用氢氧化钠作为酯交换催化剂。利用正交实验优化两步法工艺条件，得到酯化反应中各因素最佳的水平组合为硫酸铁用量4%、醇油摩尔比14∶1、反应温度70℃、反应时间3 h，得到酯交换反应中各因素最佳的水平组合为醇油摩尔比6∶1、氢氧化钠用量1.4%、反应温度70℃、反应时间2.5 h。在最佳的酯化和酯交换工艺条件下，总转酯率达到96.4%，所得的生物柴油主要质量指标与0#柴油接近。
英文摘要:
      Biodiesel was producted from waste clay oil by two-step catalytic method of esterification and transesterification.With ferric sulfate as catalyst in esterification reaction and sodium hydroxide as catalyst in transesterification reaction, the conditions of the two-step catalytic method were optimized by orthogonal experiment.The results showed that the optimal esterification conditions were obtained as follows: ferric sulfate dosage 4%, molar ratio of methanol to oil 14∶1, reaction temperature 70℃, reaction time 3 h; and the optimal transesterification conditions were obtained as follows: molar ratio of methanol to oil 6∶1, sodium hydroxide dosage 1.4%, reaction temperature 70℃, reaction time 2.5 h. Under these optimal conditions, the total transesterification rate reached 96.4%, and the main quality indicators of the biodiesel obtained were close to that of 0# diesel.
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