Hydrothermal liquefaction technology for co-processing of wastewater sludge and other solid wastes for bioenergy production

协同处理废水污泥和其他固体废物用于生物能源生产的水热液化技术

• 批准号: 514310-2017
• 负责人: Xu, CharlesChunbao
• 金额: $ 9.09万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Idea to Innovation
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=618292
• 关键词: Hydrothermal; liquefaction; technology; co; processing

A promising hydrothermal liquefaction (HTL) technology (PCT patent pending, file # 349-264-P) has been developed, partnering mainly with Trojan Technologies, and a few other industrial partners. The technology realizes co-processing of high-water-content wastewater sludge and other solid wastes such as municipal solid waste (MSW) and forestry/agricultural residues for co-production of bio oils and biogas. In our previous lab-scale tests in both a 100 mL batch reactor and a lab-scale continuous-flow HTL reactor (0.6 kg/h), the operating conditions including reaction temperature, reaction time and solids concentration were optimized based on the response surface methodology for the maximum bio-crude oil production. The two by-products from this process (bio-char and water-soluble products (WSP)) can be used to produce energy as well.Bio-methane Potential (BMP) test on the obtained WSP demonstrated excellent fermentability for biogas production by anaerobic digestion (AD). In this proposed I2I Phase I (reduction-to-practice) project, we aim to advance this HTL-AD process by scaling up the process for treating mixed wastes at 6 kg/h treatment capacity(10 fold scale up). The operating conditions will be optimized for the 6 kg/h scale HTL reactor system for the maximum bio-oil production. Mixtures of waste activated sludge and various types of solid wastes such as wood sawdust, cornstalk, and MSW will be investigated in the 6 kg/h scale HTL reactor system. In addition, a 5 L batch bioreactor will be constructed for AD tests of the water-soluble products for biogas production in addition to the BMP test. Finally, a techno-economic analysis for a full-scale plant (16 t/h sludge treatment capacity) will be performed, and compared with a conventional process (WAS anaerobic digestion digested sludge dewatering - landfill or incineration) as a benchmark. The research results from this I2I Phase-I project can be used for the decision making and design of full-scale HTL plants.

一种前景看好的热液液化(HTL)技术(PCT专利正在申请中，文件编号349-264-P)已经开发出来，主要与特洛伊技术公司和其他一些工业合作伙伴合作。该技术实现了高含水率废水、污泥和其他固体废物的联合处理，如城市固体废物(MSW)和林业/农业残渣，用于联产生物油和沼气。在我们之前的实验室规模试验中，在100mL间歇反应器和实验室规模的连续流动HTL反应器(0.6 kg/h)中，基于响应面方法对包括反应温度、反应时间和固体浓度在内的操作条件进行了优化，以实现最大生物原油产量。该工艺产生的两种副产物(生物炭和水溶物)也可用于生产能源。对获得的水溶物进行生物甲烷潜力(BMP)测试，表明其具有良好的厌氧消化(AD)沼气发酵性能。在这个拟议的I2I第一阶段(减少到实践)项目中，我们的目标是通过扩大处理能力为6公斤/小时的混合废物的处理工艺(扩大10倍)来推进HTL-AD工艺。将优化6 kg/h规模高温气冷堆系统的操作条件，以获得最大生物油产量。废活性污泥与木屑、玉米秆、城市生活垃圾等各种固体废物的混合物将在6 kg/h规模的HTL反应器系统中进行研究。此外，还将建造一个5号L间歇生物反应器，除进行骨形态发生蛋白试验外，还将对用于沼气生产的水溶性产品进行AD试验。最后，对规模为16t/h的污泥处理厂进行了技术经济分析，并与常规工艺(厌氧消化消化污泥脱水-填埋或焚烧)进行了比较。该I2I一期工程的研究成果可用于大型高温气冷堆的决策和设计。