| Title | A new process for the production of second-generation biodiesel from waste oils and fats |
|---|---|
| ID_Doc | 14341 |
| Authors | Zhang, F; Yi, JH; Pan, WX; Mei, GJ |
| Title | A new process for the production of second-generation biodiesel from waste oils and fats |
| Year | 2024 |
| Published | Biomass Conversion And Biorefinery, 14, 8 |
| Abstract | Waste fats and oils contain many toxic and harmful components, and the number of waste fats and oils discharged each year at home and abroad is huge. The production of second-generation biodiesel from waste oils and fats is an effective way to curb "toxic oil," which is of great significance to reduce carbon emissions, improve atmospheric quality and ecological environment, increase the proportion of green and clean fuel applications, and achieve carbon peaking and carbon neutrality. At present, the production of second-generation biodiesel at home and abroad is mainly carried out by the fixed-bed hydrogenation process, but the fixed-bed hydrogenation process still has some problems and limitations in terms of raw materials, catalysts, and production processes. To address the shortcomings of the fixed-bed hydrogenation process for the production of second-generation biodiesel, this paper proposes a new combined process of suspended-bed hydrogenation and fixed-bed hydrogenation. The results show that the new combined suspended-bed hydrogenation-fixed-bed hydrogenation process can solve the problems and limitations of the conventional fixed-bed hydrogenation process and has unique technical advantages, with the yield of the second-generation biodiesel product > 80%, which is 10-15% higher than that of the conventional fixed-bed hydrogenation process. The quality index of the product meets the EU standard BS EN 15,940 and can realize the waste oil and grease "eat up and squeeze clean," with remarkable economic and social benefits. The new process of producing second-generation biodiesel from waste oils and fats is a green and efficient technology for the continuous conversion of waste oils and fats into renewable energy, which is conducive to the promotion of a circular economy and meets the requirements of the EU Renewable Energy Directive (RED II) for sustainable development. |
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