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以微拟球藻为原料,研究微藻水热液化过程中多种参数对水热液化后有机物回收率的影响,包括温度、时间、溶剂比和pH等,从而获得微藻水热液化后有机物的最佳回收工艺条件。结果显示,在室温下进行有机相回收,保证回收溶剂比为20∶1(溶剂/水相不溶物;v/wt)、停留时间为10min、回收pH<7,即可达到最佳回收效果。最佳条件下水热液化有机相的回收率为34%左右,且不同的回收温度和pH值对回收的有机相组分均会产生影响。
In order to study the effects of various parameters on the recovery of organic compounds after hydrothermal liquefaction, such as temperature, time, solvent ratio and pH, the microalgae was used as raw material to study the effects of hydrothermal liquefaction of microalgae The best recycling process conditions. The results showed that the recovery of the organic phase at room temperature, to ensure the recovery of solvent ratio of 20: 1 (solvent / water insolubles; v / wt), residence time was 10min, recovery pH <7, to achieve the best recovery. Under the optimal conditions, the recovery rate of the organic phase in hydrothermal liquefaction is about 34%, and different recovering temperature and pH value will affect the recovered organic phase components.