处理条件对微藻快速水热液化生物油产率的影响。
Effects of processing conditions on biocrude yields from fast hydrothermal liquefaction of microalgae.
机构信息
Department of Chemical Engineering, University of Michigan, 2300 Hayward Street, 3074 H.H. Dow Building, Ann Arbor, MI 48109, United States.
Department of Chemical Engineering, University of Michigan, 2300 Hayward Street, 3074 H.H. Dow Building, Ann Arbor, MI 48109, United States; Department of Chemical Engineering, The Pennsylvania State University, 160 Fenske Lab, University Park, PA 16802, United States.
出版信息
Bioresour Technol. 2016 Apr;206:290-293. doi: 10.1016/j.biortech.2016.01.115. Epub 2016 Feb 15.
This study investigated the effects of algae species, reaction time, and reactor loading on the biocrude yield from fast hydrothermal liquefaction (HTL) of microalgae. Fast HTL reaction times were always less than 2 min and employed rapid heating and nonisothermal conditions. The highest biocrude yield obtained was 67±5 wt.% (dry basis). With all other process variables fixed, increasing the reaction time in a 600 °C sand bath by 15 s increments led to a rapid increase in biocrude yield between 15 and 45 s. At longer times, the biocrude yield decreased. Low reactor loadings generally gave higher biocrude yields than did higher loadings. The low reactor loadings may facilitate biocrude production by facilitating cell rupture and/or increasing the effective concentration of algal cells in the hot, compressed water in the reactor.
本研究考察了藻种、反应时间和反应器负荷对微藻快速水热液化（HTL）生物油产率的影响。快速 HTL 反应时间均小于 2 分钟，并采用快速加热和非等温条件。获得的最高生物油产率为 67±5wt.%（干基）。在其他所有工艺变量固定的情况下，将 600°C 沙浴中的反应时间每次增加 15 秒，可使生物油产率在 15 至 45 秒之间迅速增加。在更长的时间内，生物油产率下降。低反应器负荷通常比高负荷产生更高的生物油产率。低反应器负荷可能通过促进细胞破裂和/或增加反应器中热压缩水中藻类细胞的有效浓度来促进生物油的生产。
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