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| Optimization and evaluation of pour point depressant on low-temperature fluidity property of rapeseed oil biodiesel |
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| KeyWord:biodiesel low-temperature fluidity pour point depressant economy DEA |
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| Abstract: |
| Biodiesel was prepared from rapeseed oil and methanol by alkali catalyzed transesterification method，and the effects of nine kinds of diesel pour point depressants on sale on low-temperature fluidity property of rapeseed oil biodiesel were studied. A selection method for economically applicable pour point depressant was explored by data envelopment analysis(DEA) evaluation method. The results showed that the viscosity and cold filter point of rapeseed oil decreased after being transformed to biodiesel. The freezing point of rapeseed oil biodiesel could be effectively decreased by No.2 (Moly)，No.5 (Anjiexun)，No.6 (Needle) and No.7 (Iiena) brand diesel pour point depressants on sale. In terms of economy，No.6 pour point depressant had the best effect and the lowest cost. Selecting appropriate diesel pour point depressant could not only effectively improve the low-temperature fluidity property of biodiesel，but also provide basic reference for research on special biodiesel pour point depressant. |
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