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| Design and application of deacidification system for high acid value waste oil |
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| DOI： |
| KeyWord:high acid value waste oil deep degumming two column deacidification in series biodiesel technology application |
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| Abstract: |
| In order to solve the problem of poor deacidification effect of high acid value waste oil, according to the feed requirement of biodiesel transesterfication reaction line, deep degumming-bleaching-two column deacidification in series process for waste oil treatment was developed. Modelling the deacidification system by chemical simulation software, the process simulation module of deacidification system was established and the material balance sheets of waste oil deacidification column and fatty acid scrubbing column for the 900 t/d line were output. In addition, the column diameter, packing height and packing type were carefully sized and rated to control the reasonable gas kinetic energy factor and load rate of the columns. Ultimately, this new developed process was successfully applied on the large production line, after long time running, the phosphorus content and fatty acid content of deacidified oil could be steadily lowered to less than 3 mg/kg and 0.3%, respectively. The deep degumming-bleaching-two column deacidification in series process is used to treat the high acid value waste oil, and the deacidification effect is good. The treated waste oil can be used as the high-quality biodiesel feedstock. |
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