深圳市非电企业锅炉能源替代环境效益分析

Environmental benefits assessment on energy substitution of boilers in Shenzhen's non-power plants

2011年深圳市实施了高污染工商业锅炉淘汰、改造与清洁能源替代工程,作为大气污染防治控制、保障城市空气质量的重点工作之一。以深圳市除发电厂之外的工商业锅炉为研究对象,应用排放系数法对该工程实施前后锅炉大气污染物及温室气体排放量变化进行了估算和分析。研究表明,通过锅炉改造、关停与能源替代工作的开展,深圳锅炉PM10、SO2、NOX、CO2等污染物排放量分别下降了30.0%、57.3%、33.1%和15.8%,实现了大气环境质量的改善。建议"十二五"期间应进一步实施高污染锅炉淘汰与改造,加强区域集中供热,并提出应针对不同类型锅炉进行不同的替代能源选择,给出了燃煤、燃木材及燃油锅炉替代能源选择的具体建议。

Shenzhen implemented the project of high polluting commercial boilers elimination, transformation and clean energy substitution in 2011, as one of the important issue to control atmospheric pollution and protect urban air quality. This study takes all boilers exclusive of those in power plants as objects, conducts the emission-factors method to estimate and analyze the changes of air pollutants and greenhouse gas emissions before and after the project implementation. The result shows that the coal, heavy oil consumption of boilers decreased, while the light oil, natural gas, firewood and electricity consumption increased through the implementation of the project, which caused the emission of PM10, SO2, NOx and CO2 reduced by 30.0% ,57.3% ,33.1% and 15.8% respectively. The decrease of air pollutants emission contributed a lot to Shenzhen＇s atmospheric environment improvement. It was suggested that in the period of the 12th Five-year Plan, Shenzhen should implement further transformation and elimination of the high polluting boilers, strengthen regional central heating, and gives specific advices for the energy substitution of coal burning boilers, firewood burning boilers and heavy oil fired boilers.