Two-purpose burners for burning oil and coal-water slurry （CWS） using sideway secondary air for air distribution has firstly been adopted in our country for retrofitting a 220t/h oil-fired boiler at Maoming Thermal Power Plant to burn CWS

Test shows that the burners of said type can enable the CWS to be stably ignited and burnt. Combustion testing after retrofitting indicates that the main parameters are all coming up to or surpassing the designed values

allowing the combustion efficiency to reach 99.76%

clarifying the retrofit to be very successful. There are very good prospects in the market and potential superiority for using CWS as clean substitute fuel for oil.