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首页> 外文期刊>Energy Conversion & Management >Mass and energy equilibrium analysis on co-hydrothermal carbonization coupled with a combined flash-Organic Rankine Cycle system for low-energy upgrading organic wastes
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Mass and energy equilibrium analysis on co-hydrothermal carbonization coupled with a combined flash-Organic Rankine Cycle system for low-energy upgrading organic wastes

机译：低温升高有机废弃物结合闪蒸有机QUANTNINE循环系统的冷热热碳化的质量和能量平衡分析

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Co-hydrothermal carbonization (co-HTC) of sewage sludge (SS) with corn stalk (CS), as well as process heat recovering method, was proposed by this study for converting the biomass wastes to alternative solid fuel in an economical manner. The mass and energy equilibrium characteristics of the whole process were focused. Results indicated that the higher heating value (HHV) of hydrochar increased by increasing HTC temperature, CS mixing ratio, and reaction time. However, the energy consumption of HTC process would increase with increasing HTC temperature. A flash-organic Rankine Cycle (FSPG-ORC) system was coupled after HTC to recover the heat contained in the HTC slurry product, so as to improve the energy efficiency of HTC process. Slurry product (190 degrees C-280 degrees C) was first flashed and 5.62%-20.5% of moisture in slurry product was evaporated to drive a generator, while the remaining slurry was used as a heat source to evaporate organic working fluid which then drive another generator to generate power. After treating 1 ton/batch of SS-CS mixture under a typical HTC condition (HTC at 220. C for 2 h, and SS:CS = 1:1), 125.1 kg of hydrochar with 15% moisture content was produced, and 114.59 MJ of waste heat contained in HTC slurry product was recovered by FSPG-ORC system. Ultimately, the energy ratio of the whole HTC-FSPG-ORC process reached 24.11%. HTC-FSPG-ORC coupled process converted organic wastes into lignite-like solid fuel in a low-energy manner due to the waste heat was stepwise recovered, and therefore showed a good application prospect.
机译：本研究提出了具有玉米茎（Cs）的污水污泥（SS）的污水污泥（SS）的冷冻热碳化（CO-HTC），以及以经济的方式将生物质废物转化为替代固体燃料。聚焦整个过程的质量和能量平衡特征。结果表明，通过增加HTC温度，Cs混合比和反应时间，氢碳的较高的加热值（HHV）增加。然而，HTC过程的能量消耗随着HTC温度的增加而增加。 HTC后耦合闪存 - 有机朗肯循环（FSPG-ORC）系统以回收HTC浆料产品中所含的热量，以提高HTC工艺的能量效率。第一次闪烁浆料产品（190摄氏度C-280℃），蒸发5.62％-20.5％的浆液产物中的水分以驱动发电机，而剩余的浆料用作热源，以蒸发有机工作流程，然后驱动另一个发电机要生成电源。在典型的HTC条件下在典型的HTC条件下治疗1吨/批次的SS-CS混合物后，SS：Cs = 1：1），产生125.1kg含有15％的水分含量的氢碳，114.59通过FSPG-ORC系统回收HTC浆液产物中含有的废热的MJ。最终，全HTC-FSPG-ORC过程的能量比达到24.11％。 HTC-FSPG-ORC耦合工艺通过逐步回收废热，以低能量方式转化为褐煤状固体燃料，因此呈现出良好的应用前景。

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