Pilot-Scale Continuous Plug-Flow Hydrothermal Liquefaction of Food Waste for Biocrude Production
Pilot-Scale Continuous Plug-Flow Hydrothermal Liquefaction of Food Waste for Biocrude Production
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DOI：
10.1021/acs.iecr.3c01587
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发表时间：
2023-07
期刊：
影响因子：
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通讯作者：
Sabrina Summers;Amanda Valentine;Zixin Wang;Yuanhui Zhang
中科院分区：
文献类型：
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作者：
Sabrina Summers;Amanda Valentine;Zixin Wang;Yuanhui Zhang
中试规模的生物垃圾热液液化(HTL)是HTL技术商业化的关键一步。尽管对包括食物垃圾在内的湿生物质进行了许多HTL研究，但很少使用中试规模的连续推流反应器(PFR)进行生物粗品产量和质量分析(ASTM D2892附件X1)。本文介绍了具有60 L/h湿进料和6 L/h生物原料油处理能力的移动式中试连续催化裂化装置的研制和性能评价。该反应器系统设计的反应条件高达325℃和17.25兆帕。该反应器的体积为28.88 L，附加逆流换热器体积为18.07L，食品加工厂和杂货店的两种食物垃圾在280℃下处理30min，生物粗油产率分别为52.19%和47.06%，能量回收率分别为68.17%和70.77%，碳回收率分别为66.91%和64.78%。由于其高的原料能力和反应体积，从该中试规模的反应器中获得了大量的生物原油和HTL后废水(PHW)，以便于下游研究用于运输燃料的生物原油的提质以及PHW的处理和营养物质的回收。
Pilot-scale hydrothermal liquefaction (HTL) of biowaste is a critical step toward commercialization of the HTL technology. Despite many HTL studies conducted with wet biomass, including food waste, few were performed with a pilot-scale continuous plug-flow reactor (PFR), with the biocrude yield and quality analysis based on dewatering (ASTM D2892 Annex X1). This paper describes the development and performance evaluation of a mobile pilot-scale HTL continuous PFR, with a processing capacity of 60 L/h of wet feedstock and 6 L/h of biocrude production. The reactor system was designed for reaction conditions of up to 325 °C and 17.25 MPa. The reactor has a volume of 28.88 L with an additional counterflow heat exchanger volume of 18.07 L. Two types of food wastes, from a food processing plant and grocery store, were processed at 280 °C for 30 min, producing biocrude oil yields of 52.19 and 47.06 wt %, energy recoveries of 68.17 and 70.77%, and carbon recoveries of 66.91 and 64.78%, respectively. Due to its high feedstock capacity and reaction volume, large amounts of biocrude oil and post-HTL wastewater (PHW) were obtained from this pilot-scale reactor to allow downstream research on upgrading biocrude oil for transportation fuel as well as PHW treatment and nutrient recovery.