EBICO EC..special pulverized coal/gas/oil multi-purpose burner for the asphalt mixing plant

　　Low nox combustion technology is applied to this series of multi-fuel burner. Herein,fuels are burnt and air is supplied by stafe; coal, gas and oil are burnt integrally and effectively. Wen fuel gas and oil are userd, air is supplied in four times; when coal is used , air is supplied in three times, so as to realize combustion by stage and section and reduce emission of NOx. This is a internationally advanced multi-fuel combustion technology. While using, select fuel to enter the corresponding program mode of the fuel and carry out the full automatic intelligent run of the fuel; it can be converted automatically and safely and check the system by itself. When pulverized coal combustion is selected, it also runs and controls automatically and intelligently and can save 50~100% fuel cost.lncBoiler Burner

pulverized coal combustion systemlncBoiler Burner

　　The internationally advanced low nox combustion technology is applied to this series of pulverized coal burner. Herein, fuels are burnt and air is supplied by stage; while burning pulverized coal, "air-coal separation", "flaring multi-disc combustion stabilizer", "stafe combustion" and "coal surrounded by air" trchnologies are applied; air is supplied externally for three times, so as to realize staged combustion and reduce emission of NOx effextively.lncBoiler Burner

Main features of the pulverized coal burner:lncBoiler Burner

　　There is a 3-stage pulverized coal concentrator in the primary air channel which separates air and coal of the primary mixer. The flaring multi-disc combustion stabilizer is installed at outside of the central air duct. The air flow of pulverized coal at the peak valley enters the central backflow area directly; the air flow of pulverized coal at the peak point enters the radial backflow area; the backflow pulverized coal and high temperature flue gas are mixed violently to separate out volatile combustible gas and burn pilverized coal at stable poor-oxygen state, so as to reduce emission of NOx and improve the capability of combustion stabilization at low load.lncBoiler Burner

　　The transitional direct air is set at the external layer of the primary air to strengthen air staging; the swirling gas is set at outside to prevent pulverized coal from expanding outward too quickly;lncBoiler Burner

　　The secondary air is the direct air which ensures sufficient combustion and prevent coking phenomenon effectivelu;lncBoiler Burner

　　The tertiary air reduces high temperature of the flame tube and enables the residual pilverized coal to be exhausted quickly.lncBoiler Burner

Firing ratio of pulverized coal: 1:4lncBoiler Burner

Required coal indexlncBoiler Burner

　　Lower heating value: 5500~6500kcal/kglncBoiler Burner

　　Moisture: <5%lncBoiler Burner

　　Ash content: <7%lncBoiler Burner

　　Volatile matter: <30%lncBoiler Burner

　　Fineness: 200meshes, sieving rate: 85%lncBoiler Burner