Feasibility and pilot study of coupled anaerobic digester and pyrolyzer for co-processing organic waste to renewable natural gas and biochar

厌氧消化器和热解器联合处理有机废物生产可再生天然气和生物炭的可行性和中试研究

• 批准号: 558338-2020
• 负责人: Bi, Xiaotao
• 金额: $ 9.11万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=719364
• 关键词: Feasibility; pilot; study; coupled; anaerobic

Anaerobic digestion (AD) technologies can produce carbon-neutral renewable natural gas (RNG) thatsignificantly decarbonizes the energy system and reduces GHG emissions. Additional benefits include reducinglocal atmosphere pollution from animal waste storage and land spreading, maximizing the value of biomasswaste and producing organic fertilizers from digestate to reduce the overall cost of RNG production. There aresome small-scale facilities in British Columbia for anaerobic digestion of agricultural waste and urbansource-separated organics for biogas production. However, to deploy AD system broadly for the production ofRNG in large quantity at large scale to meet the government's RNG blending target, several challenges stillneed to be overcome to improve the AD system efficiency in treating various organic waste feedstock, reducecarbon footprint, and better manage the waste digestate streams. Integrated AD-pyrolysis system was arelatively new approach to increase the stability of AD reactor and biogas production, and it has shown a greatpromise in increasing the overall energy conversion from 33-50% of single AD reactor to more than 80% in thecombined AD-pyrolysis system. Majority of studies to date have been performed in components in laboratoryor small pilot units without integration. We propose to systematically evaluate the feasibility of an integratedanaerobic digestion and microwave pyrolysis system based on environmental and techno-economic analysesand the test of a small pilot AD reactor and a microwave-assisted fluidized bed pyrolysis reactor. The focus ison the AD reactor performance for co-digestion of crop residues, yard waste, food waste and animal waste withthe addition of pyrolysis aqueous liquid (APL) and biochar, microwave catalytic pyrolysis of solids digestatefor biochar production and the optimization of biochar properties as an additive to the AD reactor to improveAD performance and for other applications. The overall objective of this project is to provide stakeholders anAD+pyrolysis technology to meet the renewable natural gas blending demands and greenhouse gas emissionsreduction targets in British Columbia and Canada.

厌氧消化（AD）技术可以产生可再生的天然气（RNG），这显着脱碳并减少温室气体排放。其他好处包括减少动物废物储存和土地扩散所产生的局部气氛污染，最大程度地提高生物质量的价值并产生消化酸盐的有机肥料，从而降低RNG生产的总体成本。在不列颠哥伦比亚省，有小规模的设施可用于农业废物的厌氧消化和含有Urbansource的沼气生产有机物。但是，要大规模地生产大量生产AD系统，以实现政府的RNG混合目标，仍需要克服一些挑战，以提高AD系统效率，以治疗各种有机废物原料，还原含量，还原，还要改善废物消化道。综合AD-热解系统是提高AD反应器和沼气产生的稳定性的新方法，并且在将整体能量转化率从单个AD反应器的33-50％提高到综合的融合体积解析系统中的80％以上方面表现出了很大的优势。迄今为止，大多数研究都在实验室小型飞行员单位的组件中进行，而没有整合。我们建议基于环境和技术经济分析和小型飞行员AD反应器和微波炉辅助的流化的床热解反应器的测试，以系统地评估基于环境和技术经济分析的集成生物消化和微波热解系统的可行性。 ISON的重点是添加了量子残留物，院子废物，食物浪费和动物废物的AD反应堆性能，并添加了热解水性水（APL）和生物炭，微波催化催化热解，固体消化生物炭生产的生产以及对Advearties的优化，以促进Adveror conformations和其他应用。该项目的总体目的是为利益相关者ANAD+热解技术提供满足不列颠哥伦比亚省和加拿大的可再生天然气混合需求和温室气体排放目标。