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WUXI MAKE CFBC BOILER COLD CYCLONE
- 1. Wuxi CFB BoilerWuxi CFB Boiler
- 2. CONTENTCONTENT OBJECTIVESOBJECTIVES TECHNOLOGYTECHNOLOGY OPERATION & CONTROLOPERATION & CONTROL WEAR PROOF DESIGNWEAR PROOF DESIGN
- 3. • State-of-the-art CFB design technology • High Efficiency • High Operation Reliability • Environmentally friendly • Economical I. OBJECTIVES
- 4. Prototype from Chinese Academy of SciencePrototype from Chinese Academy of Science Developed through years’ of manufacturing experienceDeveloped through years’ of manufacturing experience Advanced through international cooperation in CFB designAdvanced through international cooperation in CFB design (Foster Wheeler Licensee for 600 t/h – 1,000 t/h)(Foster Wheeler Licensee for 600 t/h – 1,000 t/h) II. Technology
- 5. Design FeatDesign Featuresures • Hot Cyclone Separator （ 890℃℃ ）） • Steam Cooled Cyclone • High Circulation Ratio （ 30 cycles ） • Wear protection heating elements design
- 6. Water-Cooled Distribution PlateWater-Cooled Distribution Plate 帽材风 质为 ZG8Cr26Mn7N ，等 距 排，排列 距间 顺 间 为 160×160mm
- 9. Water-Cooled Distribution Plate & Air RoomWater-Cooled Distribution Plate & Air Room
- 10. 水冷放渣管 运行时不变 形
- 12. Under-Bed Pilot
- 13. • Rolled by Plates, no tube leakage riskRolled by Plates, no tube leakage risk • Simple structure, easy fabrication and erection, shortSimple structure, easy fabrication and erection, short erection perioderection period • High temperature inside cyclone, good for burning outHigh temperature inside cyclone, good for burning out and reducing unburnt carbon in flying ashand reducing unburnt carbon in flying ash Hot Cyclone SeparatorHot Cyclone Separator
- 17. Loop SealLoop Seal • Typical U valveTypical U valve • No blockNo block • Self BalanceSelf Balance • High PressureHigh Pressure Fluidizing AirFluidizing Air • WindowsWindows
- 18. LOOPSEAL
- 20. •ReliableReliable •No blockNo block •Good SpreadingGood Spreading •No Flue Gas LeakageNo Flue Gas Leakage ? ú???460 Front CoalFront Coal FeedingFeeding
- 22. Belt Conveyor at Front
- 23. Rolling Ash CoolerRolling Ash Cooler • Easy to control ash quantity & temperatureEasy to control ash quantity & temperature ；； • High reliability and cooling, big design marginHigh reliability and cooling, big design margin
- 24. Rolling Ash CoolerRolling Ash Cooler
- 25. Our CFB Boiler PerformanceOur CFB Boiler Performance • Boiler working RangeBoiler working Range ，， 70%70% －－ 100%B-MCR at rated100%B-MCR at rated pressurepressure • Min. stable combustion is 30%B-MCR withoutMin. stable combustion is 30%B-MCR without supplemental firingsupplemental firing • Unburnt Carbon : less than 8% in Flying Ash, less thanUnburnt Carbon : less than 8% in Flying Ash, less than 2% in bottom ash2% in bottom ash • Boiler Availability: more than 98Boiler Availability: more than 98 ％；％； • NOx emissionNOx emission ：： less than 200mg/Nmless than 200mg/Nm33 ；； • SOSO22 emissionemission ：： less than 300mg/Nmless than 300mg/Nm33 ；；
- 31. III. Operation & ControlIII. Operation & Control
- 32. Operation & ControlOperation & Control •Main Control ： Steam pressure & temperature at outlet, steam flow •Combustion air control ： to adjust ratio of PA and SA via Oxygen and NOX at fixed ratio of fuel and air •Fuel Control ： Fuel quantity is determined by load and air, fuel quantity is controlled by belt conveyor motor. •Bed temperature control ： Ratio of PA and SA to control •Lime Control ： determined by ratio of fuel and lime, checked by SOx •Furnace Pressure Control ： adjust inlet damper of ID fan •Bed Pressure Control ： to determine discharge of bottom ash •Superheated steam ： two-stage spray attemperation •Feedwater Control ： by drum water level
- 36. Differential Pressure at Free BoardDifferential Pressure at Free Board
- 39. 器与再 器 行数据过热 热 运器与再 器 行数据过热 热 运
- 44. CIRCUALTIONCIRCUALTION Bottom Ash ： 60% Flying Ash ： 40% Circu. Ratio ： 25~30 Separation rate ： ≮99.5%
- 46. The structure is easy toThe structure is easy to catch fines in flue gas,catch fines in flue gas, improving separationimproving separation rate, Wear proof brick israte, Wear proof brick is lining inside has goodlining inside has good resistance to erosion.resistance to erosion. Hot CycloneHot Cyclone SeparatorSeparator
- 47. IV. Wear Proof Design
- 48. PrinciplePrinciple:: ●●Adapting proof methods to wear portionAdapting proof methods to wear portion ●●Selection of High Quality CastablesSelection of High Quality Castables ●●Local Erosion avoided in structureLocal Erosion avoided in structure Wear ProtectionWear Protection
- 49. 1.Furnace1.Furnace 2.Joint of Interface2.Joint of Interface 33 、、 Water-Cooled PanelWater-Cooled Panel Steam-Cooled PanelSteam-Cooled Panel 44 、、 Hot CycloneHot Cyclone 55 、、 Tail DuctTail Duct Wear Proof Design
- 50. . . . . . . . . . . . . . .. • Dense Studs Arrange- ment • High Wear Resistant • Less Maintenance • Less Weight 11 、、 FurnaceFurnace Wear Proof Design
- 51. 22 、、 Joint of InterfaceJoint of Interface Wear Proof Design
- 52. 2.Joint of Interface2.Joint of Interface Wear Proof Design
- 55. 33 、、 Water-CooledWater-Cooled & Steam-Cooled& Steam-Cooled PanelPanel Wear Proof Design
- 58. Wear Proof Design 44 、、 Hot CycloneHot Cyclone
- 60. 1 2 3 4 5 4.Hot Cyclone4.Hot Cyclone WearWear AreaArea Wear Proof Design