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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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萃取耦合化学转化法提质生物油油溶相的研究
, PP. 805-812
Keywords: 生物油,油溶相,萃取,化学转化,提质
Abstract:
？采用萃取耦合化学转化技术对生物油油溶相进行了提质研究。将稻壳快速裂解油加入适宜水使其自然分为水溶相和油溶相。以正丁醇为萃取剂和转化剂，通过在线萃取将油溶相中的酸、醛、酮等可萃物不断萃取出来，再经酯化、缩醛化反应，转化为相应正丁醇的酯、缩醛和半缩醛等。与生物油直接酯化提质相比，萃取耦合化学转化法可以显著抑制提质过程中的结焦问题，降低了提质油相的含水量和酸值，提高了其热值和可挥发性。此外，还考察了油溶相预氧化和预还原对萃取耦合化学转化提质的影响。结果表明，预氧化后可将油溶相中的醛类转化为酸，再经酯化转化为稳定性好的酯类，提质后的油品水含量低于4%，热值高于30mj/kg，酸值低于2kohmg/g，并且结焦率为零。
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