airoil ratio mb

8/2/2019 AirOil Ratio MB

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_AirOil_Ratio_MB - Ladder Diagram D1_D1C:MainTask:MainProgram 2/1/2012 7:47:33 AMal number of rungs in routine: 40 ...ant\CCP\Logics\Under Development\Dryer#1\D1C_120111_SIM.ACD

RSLogix 5000

Previous Logics

NOP

Previous Logics

Scaling function to LadderScaling MBDF_To_Fuel ...Input01 FIC221052.PID.OUT 34.0MaxRaw01 100 MinRaw01 0 MaxEu01 MB_Heat_Max 24000000.0MinEu01 0 Output01 MBDF_to_Heat 8160000.0

Scaling

Scaling function toLadder

/ MB_CoalSP_Tmr.DN

EN

DN

Timer On DelayTimer MB_CoalSP_TmrPreset 3000Accum 2771

TON

Limit Test (CIRC)Low Limit 0

Test MB_CoalPrcnt_HMI 0High Limit 80

LIMGreater Than (A>B)Source A MB_CoalPrcnt_HMI 0

Source B MB_CoalPrcnt_SP 0

GRT MB_CoalSP_Tmr.DN

AddSource A MB_CoalPrcnt_SP 0Source B 1 Dest MB_CoalPrcnt_SP 0

ADD

Less Than (A<B)Source A MB_CoalPrcnt_HMI 0Source B MB_CoalPrcnt_SP 0

LES MB_CoalSP_Tmr.DNSubtractSource A MB_CoalPrcnt_SP 0Source B 1 Dest MB_CoalPrcnt_SP 0

SUB




RSLogix 5000

CoalSelect_Test

Limit Status:Main Burner Coal

SelectMsg_BMS_to_PLC[17].2

/

Damper Positioned toLow Fire

Dam_Pos_LF MB_CoalSel.0

ComputeDest MB_Coal_RunPrcnt 0.0Expression (MB_CoalPrcnt_SP*MB_CoalSel)/100

CPT

ComputeDest MB_Oil_RunPrcnt 1.0Expression 1-MB_Coal_RunPrcnt

CPT

ComputeDest MB_Coal_Flow_SP 0.0Expression ((MB_Coal_RunPrcnt*MBDF_to_Heat)/LHV_Coal)

CPT

ComputeDest MB_Oil_Flow_SP 847.79224Expression ((MB_Oil_RunPrcnt*MBDF_to_Heat)/LHV_Oil)

CPT

0 ComputeDest MB_Oil_AirReq 14344.6455Expression MB_Oil_Flow_SP*OilStoich*MB_AF_Ratio

CPT

ComputeDest MB_Coal_AirReq 0.0Expression MB_Coal_Flow_SP*CoalStoich*MB_AF_Ratio

CPT

2 ComputeDest MB_AuxAir 3007.4998Expression (FI_2211X.Eng +FI_221Y5A.Eng)*AirFactor

CPT

3 ComputeDest MB_PrimAir_SP 11337.1455

Expression ((MB_Oil_AirReq+MB_Coal_AirReq))-MB_AuxAir

CPT




RSLogix 5000

Convert Air Flow From Nm3/Hr to KG/hr.The density in 0 deg C and 1 atm = 1.2929 kg/m³ (convertion Factor = 1.2929)

4 ComputeDest FIT22106_Nmph 10620.0Expression FIT22106*60

CPT

Dryer#1 PRimary AirFlow in Nm3/Hr

Convert Air Flow From Nm3/Hr to KG/hr.The density in 0 deg C and 1 atm = 1.2929 kg/m³ (convertion Factor = 1.2929)

5 MultiplySource A FIT22106_Nmph 10620.0Source B AirFactor 1.203Dest FIT22106_Kgph 12775.859

MUL

Dryer#1 Primary AirFan Flow in Kg/Hr

6 ComputeDest MB_TotalAirFlow 15783.359Expression FIT22106_Kgph+MB_AuxAir

CPT

7 DivideSource A OilStoich 14.1Source B LHV_Oil

9625.0Dest OilPerLHV 1.46493514e-003

DIV

8 DivideSource A CoalStoich 0.0Source B LHV_Coal 5639.0Dest CoalPerLHV 0.0

DIV

9 ComputeDest MB_FiringRate_Lim 10774101.0Expression MB_TotalAirFlow/(OilPerLHV+((CoalPerLHV-OilPerLHV)*MB_Coal_RunPrcnt))

CPT

0 ComputeDest MB_CoalAir_Act 0.0Expression MB_FiringRate_Lim*MB_Coal_RunPrcnt*CoalPerLHV

CPT




RSLogix 5000

ComputeDest MB_OilAir_Act 15783.359Expression MB_FiringRate_Lim*(1-MB_Coal_RunPrcnt)*OilPerLHV

CPT

2 Compute

Dest MB_Coal_SP 1.$Expression MB_CoalAir_Act/CoalStoich/MB_AF_Ratio

CPT

3 ComputeDest MB_Oil_SP 932.82263Expression MB_OilAir_Act/OilStoich/MB_AF_Ratio

CPT

4 Less Than (A<B)Source A MB_Oil_SP 932.82263Source B MB_Oil_Flow_SP 847.79224

LES OIL_LES_MBDF

5OIL_LES_MBDF

MoveSource MB_Oil_SP 932.82263Dest FIT22205_SP_CAS 847.79224

MOV

6 / OIL_LES_MBDF

MoveSource MB_Oil_Flow_SP 847.79224Dest FIT22205_SP_CAS 847.79224

MOV

7 Less Than (A<B)Source A MB_Coal_SP 1.$

Source B MB_Coal_Flow_SP 0.0

LES COAL_LES_MBDF

8COAL_LES_MBDF

MoveSource MB_Coal_SP 1.$Dest WIC221X3A_SP 0.0

MOV

Setpoint of CoalFiring Rate in Kg/Hr




RSLogix 5000

9 / COAL_LES_MBDF

MoveSource MB_Coal_Flow_SP 0.0Dest WIC221X3A_SP 0.0

MOV

Setpoint of CoalFiring Rate in Kg/Hr

0 ComputeDest MB_Tot_FueltoAir 0.0Expression (FIT22105*OilStoich)+(WIT221X3A*CoalStoich)

CPT

Old Formula for Total Aeration =( Prim Air Flow + Side Burner Flow)/((Main Oil Flow + Side Oil Flow)*0.1744074)*100

ComputeDest MB_PrimAir_Req -3007.4998Expression (((FIT22105*OilStoich)+(WIT221X3A*CoalStoich))*MB_AF_Ratio)-MB_AuxAir

CPTOld Formula for Total Aeration =( Prim Air Flow + Side Burner Flow)/((Main Oil Flow + Side Oil Flow)*0.1744074)*100

2 Greater Than (A>B)Source A MB_PrimAir_SP 11337.1455Source B MB_PrimAir_Req -3007.4998

GRT MB_AIRSP_GRT

3MB_AIRSP_GRT

Move

Source MB_PrimAir_SP 11337.1455Dest FIC22106_SP_CAS 11337.1455

MOV

4 / MB_AIRSP_GRT

MoveSource MB_PrimAir_Req -3007.4998Dest FIC22106_SP_CAS 11337.1455

MOV

5 ComputeDest MB_ActHeat 0.0Expression ((FIT22105*LHV_Oil)+(WIT221X3A*LHV_Coal))/1000000

CPT

MAin Burner TotalHeat Actual Produced

(GCal/Hr)




6 DivideSource A MB_TotalAirFlow 15783.359Source B MB_Tot_FueltoAir

0.0Dest MB_Stoichometric 1.$

DIV

Ratio Between TotalAir Flow and Fuel

Stoich Converted toAir

7

Main HSFO OperatedStatus from BMS

MainHSFOOperate PilotBurnerON AirOn_Pilot

8AirOn_Pilot

AddSource A 3976 Source B FIC22106_SP_CAS 11337.1455Dest FIC22106_SP_CAS 11337.1455

ADD

9 Less Than (A<B)

Source A MB_Stoichometric 1.$Source B 1

LES

Ratio Between TotalAir Flow and Fuel

Stoich Converted toAir

Main HSFO OperatedStatus from BMS

MainHSFOOperate

User Data Type foralarms Alarm Delay

TimerMBLowStoich.Tmr.DN

User Data Type foralarms Alarm Active

(1 = Alarm)MBLowStoich.Alm

EN

DN

Timer On DelayTimer MBLowStoich.TmrPreset 0Accum 0

TON

User Data Type foralarms Alarm Delay

Timer

nd)

airoil ratio mb

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