Biomass furnace flue gas emission control system (GECS) for greenhouse carbon dioxide enrichment - I2I phase I

温室二氧化碳富集生物质炉烟气排放控制系统（GECS）-I2I第一期

• 批准号: 453584-2013
• 负责人: Lefsrud, Mark
• 金额: $ 9.11万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Idea to Innovation
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=541581
• 关键词: Biomass; furnace; flue; gas; emission

New technologies that use renewable energy sources and emit fewer pollutants are required to offset increasing energy prices and global environmental challenges. A promising solution is through the use of biomass as a replacement for fossil fuels. Greenhouses have a significant heat requirement that is mainly supplied by non-renewable fuels such as heating oil, natural gas and propane. They also use either propane or natural gas to elevate carbon dioxide levels to 1000 ppm for improved plant growth. This proposal addresses the commercialization of a prototype exhaust gas scrubbing system to recover heat and CO2 available in the flue gas of a biomass furnace for use in a greenhouse. The Biomass Furnace Flue Gas Emission Control System (GECS) designed, constructed and installed on the chimney of a wood pellet furnace (SBI Caddy Alterna) consists of a rigid box air filter followed by heating elements and catalytic converters. The air filter removes the particulates present in the flue gas while the heating elements and catalyzers transform the noxious gases into less harmful gases. Gas analysis showed the GECS and was able to reduce CO concentrations from 1100 ppm to less than 1 ppm, NOx from 70 to 5.5 ppm, and SO2 from 19 ppm to less than 1 ppm. These levels are satisfactory since they ensure human and plant safety after dilution into the ambient air of the greenhouse. The recuperation of the flue gas has several obvious benefits since it increases the heat usability of the furnace and it greatly improves the CO2 recovery of biomass heating systems for greenhouse plant growth.

需要使用可再生能源和排放更少污染物的新技术，以抵消不断上涨的能源价格和全球环境挑战。一个有希望的解决方案是通过使用生物质作为化石燃料的替代品。温室对热量的需求很大，主要由取暖油、天然气和丙烷等不可再生燃料提供。他们还使用丙烷或天然气将二氧化碳水平提高到1000ppm，以促进植物生长。该提案涉及将废气洗涤系统原型商业化，以回收生物质炉烟气中的热量和二氧化碳，供温室使用。生物质炉烟气排放控制系统(GECS)设计、建造和安装在木质球团炉烟囱上，由刚性箱式空气过滤器、加热元件和催化转化器组成。空气过滤器去除烟气中存在的颗粒，而加热元件和催化剂将有毒气体转化为危害较小的气体。气体分析表明，GECS能够将CO浓度从1100ppm降至1ppm以下，NOx从70ppm降至5.5ppm，SO2从19ppm降至1ppm以下。这些水平是令人满意的，因为它们确保了稀释到温室环境空气中后的人类和植物安全。烟气回收有几个明显的好处，因为它增加了炉子的热利用率，并极大地提高了温室植物生长的生物质加热系统的二氧化碳回收。