Monitoring and removal of siloxanes from anaerobic digester and landfill gas

厌氧消化池和垃圾填埋气中硅氧烷的监测和去除

• 批准号: 326394-2005
• 负责人: Farahbakhsh, Khosrow
• 金额: $ 2.33万
• 依托单位: University of Guelph
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2007
• 资助国家: 加拿大
• 起止时间: 2007-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=362654
• 关键词: Monitoring; removal; siloxanes; anaerobic; digester

Increasing number of municipalities are discovering the benefit of utilizing the landfill gas (LFG) and anaerobic digester gas (ADG) for electricity production. Generating electricity from LFG or ADG can result in substantial savings and significantly reduces the total quantity of greenhouse gases emitted to the atmosphere.     One of the main obstacles to the widespread utilization of LFG and ADG for electricity generation is the adverse effect of siloxanes on cogeneration facilities. Siloxanes, common additives in many cosmetic and lubricating products, find their way to sanitary sewage or landfill refuse and end up in LFG and ADG. When burned, siloxanes convert to silicate, a crystalline precipitate, which causes accelerated ware in reciprocating engines. The adverse effect of siloxanes has resulted in millions of dollars of financial damage to private industry and municipalities and has discouraged many from utilizing the biogas from landfills and digesters for power generation.     At the present time, there is no accepted standard method for monitoring the level of siloxanes in the biogas matrix. Current analytical methods are expensive (over $2500 per sample), cumbersome, and provide only a snap shot of siloxanes profile. One of the objectives of the proposed research project is to develop a reliable, cost-effective online method for siloxanes analysis. Current analytical techniques for siloxanes in biogas could cost in excess of $2000 per sample.    Another objective of the proposed research project is to compare the effectiveness and economy of various available technologies for the removal of siloxanes from ADG and LFG. A comprehensive comparison of removal technologies has not yet been performed due primarily to the lack of an effective monitoring technique for siloxanes in the biogas.

越来越多的市政当局发现利用垃圾填埋气（LFG）和厌氧消化酯天然气（ADG）的好处进行电力生产。从LFG或ADG发电可以大量节省，并大大减少发射到大气中的温室气体的总量。 LFG和ADG用于发电的主要障碍之一是Siloxanes对Cogeneration设施的不利影响。 Siloxanes是许多化妆品和润滑产品中常见的添加剂，找到了卫生污水或垃圾填埋场垃圾的方式，最终进入了LFG和ADG。燃烧时，硅氧烷转化为硅酮，这是一种晶体精度，在往复发动机中导致加速塑料。硅氧烷的不利影响导致了数百万美元对私营企业和文化的财务损失，并阻止许多人使用垃圾填埋场和消化园的沼气来发电。目前，尚无接受的标准方法来监测沼气基质中的Siloxanes水平。当前的分析方法价格昂贵（每个样本2500美元），笨拙，仅提供Siloxanes概况的快照。拟议的研究项目的目标之一是开发一种可靠的，具有成本效益的在线方法来进行西洛克斯分析。每个样品中沼气中硅氧烷的当前分析技术的价格超过2000美元。拟议的研究项目的另一个目的是比较各种可用技术从ADG和LFG中去除Siloxanes的有效性和经济性。尚未进行全面的去除技术比较，这主要是由于缺乏对沼气中硅氧烷的有效监测技术。