afbc boiler and cfbc boiler failures ppt

afbc boiler and cfbc boiler failures ppt

afbc boiler and cfbc boiler failures ppt
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Presentation on CFBC Boilers SlideShare · Difference Between CFBC & AFBC CFBC boiler Flue gas velocity37 to 43 m/sec Over bed feeding U beam Tech

afbc boiler and cfbc boiler failures ppt

  • Presentation on CFBC Boilers SlideShare

    · Difference Between CFBC & AFBC CFBC boiler Flue gas velocity37 to 43 m/sec Over bed feeding U beam Technology No bed coil UBCLess than 2% Efficiency high (88%) Clinker formation chances low Tube erosion high as compared to AFBC Ash recycle (unburned heavy particle) system Fuel consumption is less as compared to AFBC AFBC boiler· CFBC Boiler vs Pulverized Fired Boiler 1 Traditional Fuel Firing systems CFBC Boiler and Types Advantages of CFBC boiler Environmental friendliness of CFBC NOx Control SOx Control Potential Failure problems and Prevention 2 TheCFBC Boiler vs Pulverized Fired Boiler SlideShareThis Section is all about AFBC and CFBC Boilers (Circulating Fluidised Bed Combustion) operation manuals Atmospheric and pressurized Fluidised Bed Boilers design their problems free Presentation Training material CFB Boilers introduction zip Download CFB Boiler Components Download 114 TPH CFBC Boiler Orient Cement Download 135 MW Operation Instruction Download 15 TPH FBC BoilerAFBC and CFBC Boilers operation manuals

  • Boiler Presentation SlideShare

    · For large units, the taller furnace characteristics of CFBC boiler offersbetter space utilization, greater fuel particle and sorbent residence time forefficient combustion and SO2 capture, and easier application of stagedcombustion techniques for NOx control than AFBC generators CFBCboilers are said to achieve better calcium to sulphur utilization – 15 to 1 vs32 to 1 for the AFBC boilersThis is the key to stability of the combustion in AFBC / CFBC boilers Flue gas does not transfer heat directly to bed coil It is the bed material that transfers the heat to the bed coil Less bed height causes erratic combustion CONCLUSIONThe erratic coal feeding had caused disturbed circulation rate The steam raising in 2 nd compartment was upset by irregular rpm The rpm was being keptTHERMAL FATIGUE FAILURE IN BED EVAPORATOR TUBE· Re: AFBC Boilers vs CFBC Boilers 06/20/2010 7:15 PM effeciency of CFBC boiler is more then AFBC boilers on part load u may run boiler on even 25% load, Maintenance is less due to less contact od pressure parts by eroding flue gas, low NOX & COX , but refractory cost is much more high compare to AFBC due to quantity and quality alsoAFBC Boilers vs CFBC Boilers CR4 Discussion Thread

  • CFBC Boiler vs Pulverized Fired Boiler SlideShare

    · In FBC boilers operating at ~850°C, there is an inherent lower production of NOx automatically, as the combustion temperature is low Even In PF boilers, Flame temperature reduction from 14801500 to 1250° C will impact NOx generation by 10 fold These boilers also offer a very convenient way of reducing the SOx emission within the furnace enclosure by the reaction with lime stone This desulfurization is adopted only for coals and other solid fuels with medium to high sulphur CFBC· For large units, the taller furnace characteristics of CFBC boiler offersbetter space utilization, greater fuel particle and sorbent residence time forefficient combustion and SO2 capture, and easier application of stagedcombustion techniques for NOx control than AFBC generators CFBCboilers are said to achieve better calcium to sulphur utilization – 15 to 1 vs32 to 1 for the AFBC boilersBoiler Presentation SlideShareThis is the key to stability of the combustion in AFBC / CFBC boilers Flue gas does not transfer heat directly to bed coil It is the bed material that transfers the heat to the bed coil Less bed height causes erratic combustion CONCLUSIONThe erratic coal feeding had caused disturbed circulation rate The steam raising in 2 nd compartment was upset by irregular rpm The rpm was being keptTHERMAL FATIGUE FAILURE IN BED EVAPORATOR TUBE

  • Case studies in boiler trouble shooting

    Case study 1: vibration of APH casing in a CFBC boiler This is a 76 TPH CFBC boiler designed to fire 45% ash Indian coal The boiler general arrangement can be seen in figure 3 below The 2 nd pass APH casing was seen to vibrate heavily once the load crossed 65 TPH The APH casing started cracking on the heavy vibration The boiler was inspected· difference between afbc and cfbc boiler ppt Guest Thinking To Register #1 20072013,01:39 PM afbc boiler operation manual answer by wikipedia, PPT – CFB Boiler PowerPoint presentation | free to download CFB boiler technology – A free PowerPoint PPT presentation (displayed as a Flash slideshow) on PowerShow – id: 37e9a3YTY4Y cfbc boiler operation in pptafbc boiler operation ppt – Industrial BoilerAFBC Boiler VS CFBC Boiler – Circulating fluidized bed boiler 08092015 AFBC Boiler means Atmospheric Fluidized Bed Combustion Boiler,CFBC Boiler means Circulating Fluidized Bed Combustion Boiler [PDF]Characterization of Atmospheric Fluidized Bed Combustion (AFBC Characterization of Atmospheric Fluidized Bed Combustion (AFBC) Residues and Their Use inatmospheric fluidized bed combustion afbc boiler –

  • Circulating Fluidised Bed Combustion (CFBC) Boilers

    Unlike Bubbling AFBC boilers, erosionprone submerged heating surfaces are dispensed with The recirculated cold fly ash takes over the cooling of the fluidised bed It is in the convection pass, that the heat taken is transferred to the convectional heating surfaces The boiler has a towertype arrangement The first boiler pass is formed by watercooled, gastight membrane tube walls Theyafbc boiler and cfbc boiler failures ppt fruitfantaisie afbc boiler operation ppt schievelavabojourdanbe AFBC Boiler VS CFBC Boiler , AFBC Boiler means Atmospheric, installation and aftersales staff for productsTake advantage of the most economical way to improve efficiency and operating 24/7 Online; What is the Difference Betweendifference between afbc and cfbc boiler ppt DYNASOM· Re: AFBC Boilers vs CFBC Boilers 06/20/2010 7:15 PM effeciency of CFBC boiler is more then AFBC boilers on part load u may run boiler on even 25% load, Maintenance is less due to less contact od pressure parts by eroding flue gas, low NOX & COX , but refractory cost is much more high compare to AFBC due to quantity and quality alsoAFBC Boilers vs CFBC Boilers CR4 Discussion Thread

  • Life Of Bed Coil In Afbc Boiler remontyciechanowpl

    Afbc Boiler And Cfbc Boiler Failures Ppt bed coil failure in afbc natureslimsecretscoza Failure Analysis of Bed Coil Tube in an Atmospheric , Case Studies on CFBC Boilers This was practically experienced in AFBC boilers PANEL SUPERHEATER FAILURE IN CFBC Circulating fluidized bed boiler Chat With Sal Chat With Sal Ash formation in circulating fluidised bed Repeated failures in lighting off the burner may cause accumulation of unburnt fuel and make a threat of explosion 12 COLD STARTUP BOILER PRESSURING ; Increase the burner NG pressure by increasing NG flow to increase the boiler pressure Maintain the furnace pressure around 3 to 5 mmH2O Maintain normal water level in Drum Whenever the steam drum pressure reaches about 2kg/cm2, close thePPT – CFBC BOILER STARTUP AND SHUTDOWNCASE STUDIES IN BOILER VIBRATIONS AND BFP CAVITATION By KKParthiban, BTech ( IITM), ME Thermal Engineering RECT Trichy In this paper case studiestwo are presented, which arerelevant to boiler operating and design engineers One is a vibration problems experienced in CFBC boilers and other is about a repeated BFP failure in a power plantCase studies in boiler trouble shooting

  • TO CALCULATE AND IMPROVEMENT IN THE EFFICIENCY OF FBC BOILER

    characteristics of CFBC boiler provides better space utilization, larger fuel particle and sorbent dwelling time for effective combustion methods for NOx control than AFBC generators CFBC boilers are said to attain better calcium to sulphur utilization 2 to 3 for the AFBC boilers, even though the furnace temperatures are almost the same CFBC boilers are mostly claimed to be more costFine Tuning a CFBC Boiler 3 The literature on Boiler Tube Fit up by Expanding 4 Lesson Learnt from Troubleshooting 5 Natural Circulation in Boiler 6 Preservation of Boilers 7 Boiler Failure Due to Oversizing of Boiler Feed Pump 8 Article on Gauge Glass Level Fluctuations 9 Fans at Work in boilers 10 Erosion Phenomenon in Boilers 11 Effect of Air Ingress in Boilers 12 A freak incidentTraining Material for Boiler Trouble Shooting· Re: AFBC Boilers vs CFBC Boilers 06/20/2010 7:15 PM effeciency of CFBC boiler is more then AFBC boilers on part load u may run boiler on even 25% load, Maintenance is less due to less contact od pressure parts by eroding flue gas, low NOX & COX , but refractory cost is much more high compare to AFBC due to quantity and quality alsoAFBC Boilers vs CFBC Boilers CR4 Discussion Thread

  • cfbc boiler operation procedure – Industrial Autoclave

    Pfbc Boiler Operation Manual download 1990 corolla manual cfbc boiler ppt presentation – authorstream t7350m1008 manual proceedings of the fifth international conference CFBC Boiler Operation Process In Animation ( Power CFBC Boiler Operation Process In Animation ( Power Plant )download from 4shared afbc boiler operation procedure PDF cfbc boiler operation manual PDF boilerafbc boiler and cfbc boiler failures ppt fruitfantaisie afbc boiler operation ppt schievelavabojourdanbe AFBC Boiler VS CFBC Boiler , AFBC Boiler means Atmospheric, installation and aftersales staff for productsTake advantage of the most economical way to improve efficiency and operating 24/7 Online; What is the Difference Betweendifference between afbc and cfbc boiler ppt DYNASOM· Unlike the PF boiler / AFBC boiler / stoker fired boilers / gas or oilfired boilers, CFBC furnace panels demand stringent quality levels during manufacture & during field work Manually weldedFactors that affect CFBC boiler furnace tube erosion by

  • solid circulating fluidised bed combustion boiler | Thermax

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