Abstract The hydrothermal conversion process of industrial Spirulina sp. residues into bitumen analogue is studied with an instrumented reactor heated at 260 °C under autogenous pressure. During hydrothermal conversion experiments, an exothermic reaction starts during the heating ramp above 200 °C and perturbs the thermal regulation of the process. The end of the reaction is detected from recorded pressure and temperature signals. Thermal insulation of the reactor and monitoring of the electrical energy input for thermal regulation allows estimating a total reaction enthalpy ΔHr ≈ - 1.7 MJ/kg of dry biomass by performing two successive heating-isotherm experiments: First with biomass until complete reaction and again with reaction products after cooling. This second run is used as a reference for energy balance calculations.

中文翻译：

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微藻残留物水热处理过程中生物基沥青类似物的形成，第 1 部分：反应焓对过程的影响

摘要 工业螺旋藻的水热转化过程。用仪表反应器在自生压力下加热到 260 °C，研究将残留物转化为沥青类似物。在水热转化实验中，放热反应在 200 °C 以上的加热斜坡期间开始，并扰乱了过程的热调节。从记录的压力和温度信号检测反应结束。反应器的绝热和用于热调节的电能输入的监测允许通过执行两个连续加热等温线实验来估计总反应焓 ΔHr ≈ - 1.7 MJ/kg 干生物质：首先使用生物质直到完全反应，然后再次使用反应冷却后的产品。第二次运行用作能量平衡计算的参考。