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

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 CO2reduced 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.