生物质直燃锅炉烟气污染源强的确定

Determination of smoke gas pollution source intensity for biomass direct-fired boiler

生物质直接燃烧发电(简称生物质发电)是世界上仅次于风力发电的清洁可再生能源发电技术。中国现行审批体制将环境影响评价规定为项目核准备案的前置条件,而该类项目在可行性研究阶段所能提供的工程技术资料并不满足环评需要,因此如何在该阶段合理确定烟气排放浓度,进而评价治理措施的合理性,可行性,预测大气环境影响,均成为该类项目环评报告编制及评审的重点问题。由于国家尚未颁布相关计算规范,环评在如何确定该类项目烟气排放源强的问题上仍存在较大分歧。本文拟以某1×30 MW生物质发电项目为例,提出综合运用类比法、物料衡算法、实测法及查阅相关实验资料法确定生物质直燃锅炉烟气源强的方法,以期探索相关规范尚未颁布情况下的解决方案。

Biomass direct-fired power generation is the second most important renewable energy power generation technology,wind power generation is the first one. Currently, environmental impact assessment is regarded as a precondition of project to approve and set up a file management in China. The engineering data provided in the feasibility study phase can＇t meet the requirements of EIA engineering analysis. How to reasonably determine the concentration of flue gas emission, thus evaluate the feasibility and rationality of the evaluation methods, and forecast the impact of atmospheric pollution, have become prevail problems during the preparation and review of EIA reports. There is still no related evaluation specifications in China, EIA have great differences in ascertaining the flue gas emission source. Taking one 1 x30 MW biomass power generation project as example, determine the biomass direct-fired boiler smoke gas source method based on the connection of analogy method, material balance algorithm, measurement method and relevant experimental data method, with an aim to improve the related specifications that have not been promulgated in China.