Waste Heat Boiler Evaluation for Gas Fired Heater Furnace

8/3/2019 Waste Heat Boiler Evaluation for Gas Fired Heater Furnace

1/35

Estimate Area & Heat Recovery for Flue Gas Heat Recovery for MED BFW Preheat

air Q=1.08CFM(dT) btuh 1 Estimate only based on simplistic HVAC Air Water-

water Q=500gpm(dT) btuh 2 Detailed to used actual Cp & Den's

Water lbs/hr=500gpm 3

fuel Q=(dH)SCFH(eff) btuh 4

flue gas (SCF /SCF )=(1+%XA/200)(15.8SG+1.8) FlueGz/ Fuel 5 Calc_F1

any SCFH/60=SCFM 6

Q=U(A)LMTD(F) BTUH 7

Input

Xair 10.0 % Excess Air from Furnace Design Sheet, Study to verify_basis: Furnace Design Sheet

Fuel Qual FlueGz SCF/SCF Fuel MW/29 General Statement for Gas Specific Gravity

0.73 14.0 Flue/Fuel Fuel SG amount of Flue Gas per Quantity of Fuel Used

Fuel/Furn 3.5 mmscfd Fuel Flow to Furnace from PI 5 year Trend, Design to perform sensitivity analysis see Fuel Analysis sheet

Fuel 1050.0 BTU/SCF Fuel Heat Content used in calculation to determine Fuel Gas Saving

dT water 175 F Water Temperature Increase inside Waste Heat Recovery Section *

H2O/Furn 70.0 gpm BFW Averaged Water Flow per Furnace-assume G80F10 servesG82 F7 & G80F11 serve G82F8_see G26E310A-C

T FlueGas in 490 F Flue Gas Temperature Average from PI Data Chart see FlueGas T summry

TH2O in 110 F Water Temperature from Boiler Feed Water prior to Heat Recovery

Uo 25 BTUH/SF/F Overall Heat Transfer Factor, assume finned tubes

OUTPUT Qwater=Qfluegas Calculation'

Flue Gas 2,041,768.8 SCFH Amount of Flue Gas, based on Fuel Flow from PI Fuel Flow & XA% & FuelSG Correlation

Fuel 145,833.3 scfh Convert PI Fuel Flow to SCFH from MMSCFD

Q water 6,186,250.0 BTUH Calc Water Heat duty Required by Eq#2

Flue Gas 34,029.5 SCFM Convert Flue Gas from SCFH to SCFM

dT FlueGas 154.1 F Flue Gas dT by eqn 1 & Heat Duty of Eq2

T FlueGas out 335.9 F Flue Gas T out by PI Flue Gas T & dT above

TH2O out 285.0 F Water T out by Assumed Inlet Water T & dTwater

LMTD 215.3 F LMTD by Text, (d1-d2)/ln(d1/d2)

Ax 1,352.1 Feet squared Recovery Exchanger Area by Eq.7 at F=0.85


2/35

Fuel Saved 7,364.6 SCFH

Fuel Cost 3.5 $/mSCF Calc_F1

Annual $ $206,208.3 $/year Fuel Saving in $/year

NPV $ at 7 $1,443,458.33 $

Pump HP 2.9 HP at 40 psi dP additional dP over what is used already

Pump elect 18,407.8 KWHR/YR to feed boilers

$/KWHR 0.035 e Cost unit

$ elec/yr 644.3 $ electri/yr use BFW Pump to Feed Heat Recovery

Job Scope

Add WHR unit to Stack on both Furnace, G80F10&11

Use Single 4" feed & Return Pipe, insulate Return to G82F10&11

Add Control Valve at G82 BFW Pumps and BL Isolation Valves

Relocate Stack TI to top of WHR HX

Use FBE Pipe as inplant Runs since T does not exceed FBE Limits.

Used Finned Tubes in Coiled Arrangement approx 32ft L x 5ftOD-400SF extended area


3/35

Boiler feed water average 70 gpm/boiler G26E310A-C sheet Calc_F1

Summary Apr.28/09 T, F, five yr look back Fuel gpm BFW pH gpm T, F

MEAN Range L R Hi mmscfd water Steam Inlet W

stack F1 G26AH 490 385 580 3.5 70 25 110

stack F2G26AH 515 440 625 3.5 70 25 110

stack F211G57AH 450 365 545 3.5 70 25 110

stack F212AM 486 310 255 380

oil F212 OinAM 48 195 155 235

oil F212 OoutAM 265 255 380

Based on Heat Recovered and Fuel Heat Value at 83% Boiler Effiency, study to confirm Boiler Effiency Orsat

Fuel Ax The Fuel & Ax are input at each dT

dT H2O m$/yr Ft2 dT H2O Fuel at 3yr CapX guess Fuel at 5yr

75 88 403 75 265 177 88 442 177 265

100 118 582 100 353 319 35 589 319 270

125 147 792 125 442 522 -80 737 522 214

150 177 1045 150 530 813 -282 884 813 71

175 206 1352 175 619 1228 -609 1032 1228 -197

dT H2O PV CRF=3 PV CRF=5

75 88 265

100 35 270

125 -80 214

150 -282 71

175 -609 -197

Calc_F1

-700

-600

-500

-400

-300

-200

-100

0100

200

300

400

50 75 100 125 150 175 200

PV CRF=3

PV CRF=5


4/35

Estimate Area & Heat Recovery for Flue Gas Heat Recovery for MED BFW Preheat '- Detailed to used actual Cp & Den's

air Q=1.08CFM(dT) btuh 1

H2O Q=500gpm(dT) btuh 2

H2O lbs/hr=500gpm 3


fluegas (SCF /SCF )=(1+%XA/2 Flue/ Fuel 5 '(SCF /SCF )=(1+%XA/200)(15.8SG+1.8)any SCFH/60=SCFM 6


Input

Xair 10.0 % Excess Air from Furnace Design Sheet, Study to verify

Fuel Qual FlueGz SCF/SCFFuel MW/29 General Statement for Gas Specific Gravity


Fuel/Furn 3.5 mmscfd Fuel Flow to Furnace from PI 5 year Trend, Design to perform sensitivity analysis


dTH2O 254 F Water Temperature Increase inside Waste Heat Recovery Section *

H2O/Furn 11.0 gpm BFW Averaged Water Flow per Furnace-assume G80F10 servesG82 F7 & G80F11 serve G82F8T Flue in 490 F Flue Gas Temperature Average from PI Data Chart



OUTPUT Qwater=Qfluegas Calc.' Amount of Flue Gas, based on Fuel Flow from PI Fuel Flow & XA% & FuelSG Correlation

Flue Gas 2,041,768.8 SCFH




dT.FlueGz 35.1 F Flue Gas dT by eqn 1 & Heat Duty of Eq2

T Flue out 336.1 F Flue Gas T out by PI Flue Gas T & dT aboveTH2O out 364.0 F Water T out by Assumed Inlet Water T & dTwater


Ax 1,043.8 Feet2

Recovery Exchanger Area by Eq.7 at F=0.85


Fuel Cost 3.5 $/mSCF


NPV $ at $1,441,876.33 $


Pump ele2,892.7 KWHR/YR to feed boilers



Calc_F1-BOIL


5/35

If steam is produced use above to calc Sensible Heat Calc_F1-BOIL

Then Carry the value to cal. Latent Heat Requirements

H liq at T 337 Btu/# Tsat= 364 F use stm table for H

H vap at T 1204 Btu/# Psat= 160 psia use stm table for H

dH stm at T 867 Btu/# net Latent Heat Required

flow H2O 5500 #/hr frm B16 Convert gpm500=#/hrLatent Q 4768500 BTUH (BTU/#)(#/HR)

dT flue gas 119 F by ratio of above 224

T flue out 371 F 254

LMTD 67 F 84

Ax 3.9 SQ Ft.

Job Scope








6/35

basis: Vendor Proposal Summary Apr.28/09 mmscfd gpm

Recv./furn 4.2 MW/Furnace T, F, five yr look back Fuel gpm BFW pH T, F

Recv in BTUH 14.3 mmbtuh/fur MEAN Range L R Hi water Steam Inlet W

net dHs 1116 btu/# Stm F1 G26AH 490 385 580 3.5 70 25 110

H2O mass 12833 #S/hr/furn F2G26AH 515 440 625 3.5 70 25 110

H2O volume 25.7 gpm/furn F211G57AH 450 365 545 3.5 70 25 110numb Furn 4.0 number F212AM 486 310 255 380

max H2O 102.7 gpm avail 4.2MW/Furnace F212 OinAM 486 195 155 235

required H2O 210.0 gpm req'd 70*3boilers F212 OoutAM 486 265 255 380

Boiler feed water average 70 gpm/boiler G26E310A-C sheet


Fuel Ax

gpm H2O m$/yr Ft2 gpm H2O Fuel at 3yrPOT CapX guess Fuel at 5yr

4 75 138 4 225 32 193 375 32 343

6 112 245 6 337 80 257 562 80 4828 150 406 8 449 179 269 748 179 568

10 187 707 10 562 435 127 937 435 501

11 206 1048 11 618 817 -199 1030 817 213

1,048 gpm H2OPV CRF=3 PC CRF=5

4 193 343

6 257 482

Calc_F1-BOIL 8 269 568

10 127 501

11 -199 213

Calc_F1-BOIL

-300

-200

-100

0

100

200

300

400

500

600

700

0 2 4 6 8 10 12

PV CRF=3

PC CRF=5


7/35


Estimate only based on simplistic HVAC Air Water- Detailed to used actual Cp & Den's

air Q=1.08CFM(dT) btuh 1

water Q=500gpm(dT) btuh 2 Calc_F2



flue gas (SCF /SCF )=(1+%XA/200)(15FlueGz/NG 5 '(SCF /SCF )=(1+%XA/200)(15.8SG+1.8)any SCFH/60=SCFM 6


Input







H2O/Furn 70.0 gpm BFW Avg H2O Flow per Furnace-assume G80F10 servesG82 F7 & G80F11 serve G82F8

Flue in T 515 F Flue Gas Temperature Average from PI Data Chart

T H2O in 110 F Water Temperature from Boiler Feed Water prior to Heat Recovery


OUTPUT Qwater=Qfluegas Calc.'

Flue Gas 2,041,768.8 SCFH Flue Gas, basis: Fuel Flow from PI Fuel Flow & XA% & FuelSG Correlation





Flue out T 294.9 F Flue Gas T out by PI Flue Gas T & dT above



Ax 2,453.3 Feet2

Recovery Exchanger Area by Eq.7 at F=0.85

Fuel Saved 10,520.8 SCFH Calc_F2


Annual $ $294,583 $/year Fuel Saving in $/year

NPV $ at 7 $2,062,083 $




$ elec/yr 644.3 $ electri/yr use BFW Pump to Feed Heat RecoveryJob Scope








8/35

Boiler feed water average 70 gpm/boiler G26E310A-C sheet Calc_F2



F1 G26AH 490 385 580 3.5 70 25 110

F2G26AH 515 440 625 3.5 70 25 110

F211G57AH 450 365 545 3.5 70 25 110

F212AM 486 310 255 380F212 OinAM 486 195 155 235

F212 OoutAM 486 265 255 380


Fuel Ax

dT H2O m$/yr Ft2 dT H2O Fuel at 3y CapX guess Fuel at 5yr

75 88 373 75 265 156 109 442 156 285.6

100 118 535 100 353 279 75 589 279 310.4

125 147 724 125 442 452 -10 737 452 285.0

150 177 946 150 530 693 -163 884 693 191.0

175 206 1211 175 619 1030 -411 1031 1030 1.0

dT1 dT2 dT H2O PV CRF=3 PV CRF=5

185 155 75 108.8 285.6

170 100 74.8 310.4

125 -9.6 285.0

150 -162.6 191.0

175 -411.4 1.0

Calc_F2

-500.0

-400.0

-300.0

-200.0

-100.0

0.0

100.0

200.0

300.0

400.0

50 75 100 125 150 175 200

PV

CRF=3


9/35

Estimate Area & Heat Recovery for Flue Gas Heat Recovery for MED BFW PreheatCalc_F2-BOIL

air Q=1.08CFM(dT) btuh 1 'Estimate only based on simplistic HVAC Air Water- Detailed to used actual Cp & Den's

water Q=500gpm(dT) btuh 2



flue gas (SCF /SCF )=(1+%XA/200)(15.8FlueGz/ Fuel 5 (SCF /SCF )=(1+%XA/200)(15.8SG+1.8) Calc_F2-BOIL

any SCFH/60=SCFM 6


Input THIS SHEET BASIS IS STEAM GENERATION BY COUNTERCURRENT FLOW







H2O/Furn 12.0 gpm BFW Averaged Water Flow per Furnace-assume G80F10 servesG82 F7 & G80F11 serve G82F8

T FlueGas in 515 F Flue Gas Temperature Average from PI Data Chart




Flue Gas 2,041,768.8 SCFH Amount of Flue Gas, based on Fuel Flow from PI Fuel Flow & XA% & FuelSG Correlation








Ax 807.0 Feet squared Recovery Exchanger Area by Eq.7 at F=0.85

Fuel Saved 8,025.3 SCFH Based on Heat Recovered and Fuel Heat Value at 83% Boiler Effiency,

Fuel Cost 3.5 $/mSCF study to confirm Boiler Effiency Orsat


NPV $ at 7 $1,572,956.00 $


10/35

Pump HP 0.5 HP at 40 psi dP additional dP over what is used already Calc_F2-BOIL




If steam is produced use above to calc Sensible Heat dT1 dT2 At

Then Carry the value to cal. Latent Heat Requirements 237.1 21.5 810.3

H.liq @T 337.0 Btu/# Tsat= 364 F use stm table for HH.vap @T 1204.0 Btu/# Psat= 160 psia use stm table for H

dH stm @T 867.0 Btu/# net Latent Heat Required

flow H2O 6000.0 #/hr frm B16 Convert gpm500=#/hr

Latent Q 5202000.0 BTUH (BTU/#)(#/HR)

dT flue gas 129.5 F by ratio of above 224

T flue out 385.5 F

LMTD 86.2 F

Ax 3.3 SQ Ft.

91.2

Recv./furn 4.2 MW/Furnace Job Scope

Recv in BTUH 14.3 mmbtuh/fur Add WHR unit to Stack on both Furnace, G80F10&11

net dHs 1116.0 btu/# Stm Use Single 4" feed & Return Pipe, insulate Return to G82F10&11

H2O mass 12833.3 #S/hr/furn Add Control Valve at G82 BFW Pumps and BL Isolation ValvesH2O volume 25.7 gpm/furn Relocate Stack TI to top of WHR HX

numb Furn 4.0 number Use FBE Pipe as inplant Runs since T does not exceed FBE Limits.

max H2O 102.7 gpm avail 4.2MW/Furnace Used Finned Tubes in Coiled Arrangement

required H2O 210.0 gpm req'd 70*3boilers approx 32ft L x 5ftOD-400SF extended area

clc rec 6.74 mm btuh

clc rec 1.98 MW/Furn


11/35

Calc_F2-BOIL Boiler feed water average 70 gpm/boiler G26E310A-C sheet

Summary Apr.28/09 T, F, five yr look back Fuel gpm BFW pH gpm T, F gpm H2O PV CRF=3 PC CRF=5

MEAN Range L R Hi mmscfd water Steam Inlet W 4 200 350

stack F1 G26AH 490 385 580 3.5 70 25 110 6 278 502

stack F2G26AH 515 440 625 3.5 70 25 110 8 326 626

stack F211G57AH 450 365 545 3.5 70 25 110 10 314 689

stack F212AM 48 310 255 380 12 133 583

oil F212 OinAM195 155 235

oil F212 OoutA 265 255 380

Calc_F2-BOIL

Fuel Ax

gpm H2O m$/yr Ft2 gpm H2O Fuel at 3yr CapX guess Fuel at 5yr

4 75 118 4 225 25 200 375 25 350

6 112 204 6 337 60 278 562 60 502

8 150 321 8 449 123 326 749 123 626

10 187 497 10 562 248 314 937 248 689

12 225 810 12 674 541 133 1124 541 583

0

100

200

300

400

500

600

700

800

0 2 4 6 8 10 12 14

PV CRF=3

PC CRF=5


12/35


air Q=1.08CFM(dT) btuh 1 'Estimate only based on simplistic HVAC Air Water-

water Q=500gpm(dT) btuh 2 Detailed to used actual Cp & Den's

Water lbs/hr=500gpm 3 'Boiler feed water average 70 gpm/boiler G26E310A-C sheet


flue gas (SCF /SCF )=(1+%XA/200)(1 FlueGz/ Fuel 5 '(SCF /SCF )=(1+%XA/200)(15.8SG+1.8)

any SCFH/60=SCFM 6Q=U(A)LMTD(F) BTUH 7 Calc_F2-BOIL50#

Input THIS SHEET BASIS IS STEAM GENERATION BY COUNTERCURRENT FLOW



0.73 14.0 Flue/Fuel Fuel SG amount of F lue Gas per Quantity of Fuel Used

Fuel/Furn 3.5 mmscfd Fuel Flow to Furnace: PI 5 year Trend, Design to make sensitivity analysis


dT water 149.3 F Water Temperature Increase inside Waste Heat Recovery Section *

H2O/Furn 18.0 gpm BFW Avg. H2O Flow/Furnace-assume G80F10->G82 F7 & G80F11->G82F8

T FlueGas in 515 F Flue Gas Temperature Average from PI Data ChartTH2O in 110 F Water Temperature from Boiler Feed Water prior to Heat Recovery

Uo 25 BTUH/SF/F Overal l Heat Transfer Factor, assume finned tubes

OUTPUT Qwater=Qfluegas Calculation

Flue Gas 2,041,768.8 SCFH Flue Gas, basis: Fuel Flow from PI Fuel Flow & XA% & FuelSG Correlation








Ax 701.0 FeetSquared Recovery Exchanger Area by Eq.7 at F=0.85

Fuel Saved 11,676.4 SCFH Based on Heat Recovered and Fuel Heat Value

Fuel Cost 3.5 $/mSCF at 83% Boiler Effiency, study to confirm Boiler Effiency Orsat


NPV $ at 7 $2,288,565.30 $



$/KWHR 0.035 e Cost unit$ elec/yr 165.7 $ electri/yr use BFW Pump to Feed Heat Recovery

Calc_F2-BOIL50#


13/35

If steam is produced use above to calc Sensible Heat Calc_F2-BOIL50#

Then Carry the value to cal. Latent Heat Requirements At

H liq at T 703.8

H vap at T

dH stm at T

flow H2O dT1 dT2

Latent Q 160.7 45.2dT flue gas 228 Btu/# Tsat= 259 F use stm table for H

T flue out 1167 Btu/# Psat= 35 psia use stm table for H

LMTD 939 Btu/# net Latent Heat Required

Ax 9000 #/hr frm B16 Convert gpm500=#/hr

8451000 BTUH (BTU/#)(#/HR)

210 F by ratio of above 224

Recv./furn 305 F

Recv in BTUH 150 F

net dHs 2.8 SQ Ft.

H2O mass Calc_F2-BOIL50#

H2O volume 177

numb Furn 4.2 MW/Furnace

max H2O 14.3 mmbtuh/fur

required H2O 1116 btu/# Stm

12833 #S/hr/furn

25.7 gpm/furn

4.0 number

102.7 gpm avail 4.2MW/Furnace

210.0 gpm req'd 70*3boilers


14/35

Summary Apr.28/09 T, F, five yr look bac Fuel gpm BFW pH gpm T, F


stack F1 G26AH 490 385 580 3.5 70 25 110

stack F2G26AH 515 440 625 3.5 70 25 110

stack F211G57AH 450 365 545 3.5 70 25 110

stack F212AM 486 310 255 380

oil F212 OinAM 486 195 155 235oil F212 OoutAM 486 265 255 380

Calc_F2-BOIL50#

Fuel Ax gpm H2O CapX guess

gpm H2O m$/yr Ft2 Fuel at 3yrPOT Fuel at 5yr

10 182 181 10 545 49 495 908 49 859

12 218 250 12 654 82 572 1090 82 1008

15 273 406 15 819 179 640 1365 179 1186

18 327 703 18 981 431 550 1635 431 1204

21 381 1678 21 1144 1735 -591 1907 1735 172

gpm H2O PV CRF=3PC CRF=5

10 495 859

12 572 1008

15 640 1186

18 550 1204

21 -591 172

Calc_F2-BOIL50#

Job Scope



Add Control Valve at G82 BFW Pumps and BL Isolation ValvesRelocate Stack TI to top of WHR HX



Calc_F2-BOIL50#

-1000

-500

0

500

1000

1500

10 15 20 25

PV

CRF=3


15/35


air Q=1.08CFM(dT) btuh 1 Estimate only based on simplistic HVAC Air Water- Detailed to used actual Cp & Den's


Water lbs/hr=500gpm 3 Calc_F211


flue gas (SCF /SCF )=(1+%XA/200)(15.8SG+1.8) FlueGz/ Fuel 5 '(SCF /SCF )=(1+%XA/200)(15.8SG+1.8)

any SCFH/60=SCFM 6


Input

Xair 10.0 % Excess Air from Furnace Design Sheet, Study to verifyFuel Qual FlueGz SCF/SCF Fuel MW/29 General Statement for Gas Specific Gravity










Flue Gas 2,041,768.8 SCFH FlueGas, basis: Fuel by PI Fuel & XA% & FuelSG Corr.


Q water 2,651,250.0 BTUH Calc Water Heat duty Required by Eq#2Flue Gas 34,029.5 SCFM Convert Flue Gas from SCFH to SCFM






Calc_F211


16/35

Fuel Saved 3,156.3 SCFH Calc_F211



NPV $ at 7 $618,625.00 $





If steam is produced use above to calc Sensible Heat

Then Carry the value to cal. Latent Heat Requirements

H liq at T 337 Btu/# Tsat= 364 F use stm table for H

H vap at T 1204 Btu/# Psat= 160 psia use stm table for H

dH stm at T 867 Btu/# net Latent Heat Required

flow H2O 35000 #/hr frm B16 Convert gpm500=#/hr

Latent Q 30345000 BTUH (BTU/#)(#/HR)


T flue out -371.7

Job Scope Calc_F211








17/35

Calc_F211 Boiler feed water average 70 gpm/boiler G26E310A-C sheet


MEAN Range L R Hi mmscfd water Steam Inlet W dT H2O PV CRF=3 PC CRF=5

F1 G26AH 490 385 580 3.5 70 25 110 75 44 221

F2G26AH 515 440 625 3.5 70 25 110 100 255 490

F211G57AH 450 365 545 3.5 70 25 110 125 -239 56

F212AM 486 310 255 380 150 -560 -206

F212 OinAM 486 195 155 235 175 -1088 -676

F212 OoutAM 486 265 255 380Based on Heat Recovered and Fuel Heat Value at 83% Boiler Effiency, study to confirm Boiler Effiency Orsat

Fuel Ax CapX guess

dT H2O m$/yr Ft2 dT H2O Fuel at 3yrPOT Fuel at 5yr

75 88 463 75 265 221 44 442 221 221

100 118 280 100 353 99 255 589 99 490

125 147 935 125 442 681 -239 737 681 56

150 177 1255 150 530 1090 -560 884 1090 -206

175 206 1661 175 619 1707 -1088 1031 1707 -676

-1200

-1000

-800

-600

-400

-2000

200

400

600

50 75 100 125 150 175 200PV CRF=3

PC CRF=5


18/35


air Q=1.08CFM(dT) btuh 1 'Estimate only based on simplistic HVAC Air Water- Detailed to used actual Cp & Den's


Water lbs/hr=500gpm 3 Calc_F211_BOIL


flue gas (SCF /SCF )=(1+%XA/200)(15.8SG+1.8) FlueGz/ Fuel 5 Boiler feed water average 70 gpm/boiler G26E310A-C sheet

any SCFH/60=SCFM 6


Input

Xair 10.0 % Excess Air from Furnace Design Sheet, Study to verifyFuel Qual FlueGz SCF/SCF Fuel MW/29 General Statement for Gas Specific Gravity










Flue Gas 2,041,768.8 SCFH Flue Gas, based on Fuel Flow from PI Fuel Flow & XA% & FuelSG Correlation


Q water 897,890.0 BTUH Calc Water Heat duty Required by Eq#2Flue Gas 34,029.5 SCFM Convert Flue Gas from SCFH to SCFM






Calc_F211_BOIL


19/35




NPV $ at 7 $917,557.67 $ Calc_F211_BOIL





If steam is produced use above to calc Sensible Heat dT1 dT2

Then Carry the value to cal. Latent Heat Requirements 242.1 10.4

H liq at T 337.0 Btu/# Tsat= 364 F use stm table for H

H vap at T 1204.0 Btu/# Psat= 160 psia use stm table for H

dH stm at T 867.0 Btu/# net Latent Heat Required

flow H2O 3500.0 #/hr frm B16 Convert gpm500=#/hr

Latent Q 3034500.0 BTUH (BTU/#)(#/HR)


T flue out 374.4 F Calc_F211_BOIL

LMTD 48.2 F

Ax 3.4 SQ Ft. Job Scope

53.2 Add WHR unit to Stack on both Furnace, G80F10&11

Recv./furn 4.2 MW/Furnace Use Single 4" feed & Return Pipe, insulate Return to G82F10&11

Recv in BTUH 14.3 mmbtuh/fur Add Control Valve at G82 BFW Pumps and BL Isolation Valves

net dHs 1116.0 btu/# Stm Relocate Stack TI to top of WHR HX

H2O mass 12833.3 #S/hr/furn Use FBE Pipe as inplant Runs since T does not exceed FBE Limits.

H2O volume 25.7 gpm/furn Used Finned Tubes in Coiled Arrangement approx 32ft L x 5ftOD-400SF extended area

numb Furn 4.0 number

max H2O 102.7 gpm avail 4.2MW/Furnace

required H2O 210.0 gpm req'd 70*3boilers


20/35

Summary Apr.28/09 T, F, five yr look back Fuel gpm BFW pH gpm T, F dT H2O PV CRF=3 PV CRF=5

MEAN Range L R Hi mmscfd water Steam Inlet W 2 100 175

F1 G26AH 490 385 580 3.5 70 25 110 3 140 253

F2G26AH 515 440 625 3.5 70 25 110 4 170 319

F211G57A 450 365 545 3.5 70 25 110 6 171 396

F212AM 4 310 255 380 7 79 341

F212 OinA 195 155 235

F212 Oout 265 255 380


Fuel Ax

gpm H2O m$/yr Ft2 gpm H2O Fuel at 3yr CapX guess Fuel at 5yr

2 38 78 2 113 13 100 188 13 175

3 56 128 3 169 28 140 281 28 253

4 75 191 4 224 54 170 373 54 319

6 112 387 6 337 166 171 562 166 396

7 131 577 7 393 314 79 655 314 341

sf total 577

Calc_F211_BOIL

0

50

100

150

200

250

300

350

400

450

0 1 2 3 4 5 6 7 8

PV CRF=3

PV CRF=5


21/35

based on this, average water flow is 70 gpm

3units at 35,000#H2O/hr and 35,000/500= 70 gpm G26E310A-C

based on chart avg BFW T is 110F


22/35

SFUT_56FI1530.PV Split flow to F1, F2, F211

G26E310A-C SFUT_56FI1531.PV

SFUT_56FI1532.PV


23/35

SFWC_53FI1437.pv Fuel F212

SFDS_85FI1100.PV Q-F212-3 Fuel


24/35

Q-F212-3 Fuel


25/35

avg=3.5mmscfd G26F1Fuel


26/35

G26F1Fuel


27/35

310F avg Stack T F212_486AM-


28/35

F1Stack SFDS_75TI247A.PV F2Stack SFDS_75TI247E.PV F1F2 Stack T_G26AH-


29/35

460 F211_G57AH.


30/35

267F out T 188F inlet 212HotOil T in 212HotOil T in


31/35

Summary Apr.28/09 T, F, five yr look back mmscfd mmscfd gpm BFW pH gpm

MEAN Range L R Hi fuel flow avg fuel water Steam Oprn sumry

F1 G26AH stack o 490 385 580 3.5 3.5 70 25

F2G26AH stack o 515 440 625 3.5 3.5 70 25

F211G57AH stack o 450 365 545 3.3 3.5 70 25

F212G57AH stack o 310 255 380 2.7 NA na

F212 Oil nAM 486 195 155 235

F212 Oil oAM 486 265 255 380 Oprn sumry

Average Water Flow Per Boiler 70 gpm average fuel flow per furnace 3.5 mmscfd

Steam Pressure 175 psig Steam & Water Phy Prop From eSteam Table

Steam Pressure 160 psia H Sat Stm 160psia 1195.1 btu/lb

Avg Fd Water T 110 F T sat Stm 160psia 363.6 F

H Sat H2O 160psia 336.1 btu/lb

MW Flue Gas 30 #/Mol H Sat H2O 110F 78.0 btu/lb

Cp Flue Gas 0.25 BTU/#/F Cp water 1.018 btu/lb/F

Flue Gas Heat F 1.18 BTU/HR/SCFM/dF dH vap 160psia 859.0 btu/lb

Total dH H2O furn 1117.1 btu/lb

Sen dH H2O furn 258.1 btu/lb

Den BFW 61.9 #/CF

Oprn sumry SG BFW 1.0 v/v

BFW Heat Factor 505.0 BTU/Hr/gpm/dF

dT water 253.6

Oprn sumry

Fuel Gas to Flue Gas Homologues of Parrifinic HC Gas & Stoc. Combustion

C+O2=CO2 H2+0.5O2=H2O

SG gas #C's H2 oC oH Sum O2 N2 Sum Sum air CmbGas FlueGz

0.55 C1 1 2 1 0.5 2.0 7.5 9.5 3 11.2

1.03 C2 2 3 1 0.5 3.5 13.2 16.7 5 19.3

1.52 C3 3 4 1 0.5 5.0 18.8 23.8 7 27.4

2.00 C4 4 5 1 0.5 6.5 24.5 31.0 9 35.5


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G26-F211 and F212 Spec sheets

Furnace Spec Sheets

G26F1 &F2 spec sheet

G26FurnSpecs-DSN

D779316001T01.tiff

D780951001T01.tiff

D780951002T01.tiff

D780951003T01.tiff

D780951004T01.tiff

D780951005T01.tiff

D780951006T01.tiff

Adobe Acrobat

Document


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Saf Fuel Gas Comp Saf Fuel Gas Comp twister SG1 new

BI-224 P/L gas P/L gas P/L gas P/L gas

DBSP.pg9 Lab Sample Saf-S saf-w Saf-S saf-w avg S avg W

WetGas B Ap20/08

N2 0.70 3.19 0.71 0.73 0.71 0.73 0.71 0.73

CO2 1.20 1.23 1.40 1.43 1.40 1.43 1.40 1.43

H2S 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00C1 72.39 65.64 67.42 69.57 67.44 69.40 67.43 69.49

C2 16.90 15.15 16.08 16.09 16.08 16.11 16.08 16.10

C3 7.40 10.77 10.14 9.11 10.14 9.20 10.14 9.15 9.65

iC4 0.20 0.94 0.93 0.72 0.93 0.73 0.93 0.72 0.83

nC4 0.80 2.25 2.47 1.80 2.47 1.84 2.47 1.82 2.15

iC5 0.20 0.23 0.38 0.24 0.38 0.24 0.38 0.24 0.31

nC5 0.20 0.21 0.38 0.26 0.36 0.27 0.37 0.26 0.32

n6 0.00 0.01 0.08 0.04 0.08 0.04 0.08 0.04 0.06

C7+ 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

nC8 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

nC9 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

nC10 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

O2 0.00 0.38 0.00 0.00 0.00 0.00 0.00 0.00 13.31

H2 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

He 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

H2O 0.01 0.00 0.01 0.01 0.01 0.01 0.01 0.01

sum 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00

SG 0.74 0.81

mw 21.58 23.39

cp/cv 1.25

NHV 1148

Tc* R 407.61

Pc* psia 669.3 Saf Fuel Gas Comp

Mx&Norm

sweet


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%Cond HC condy defined as C3+

Apr20 anal 13.655

BI224 dbsp 8.8

1.55 ratio of Conden HC

bpd condy 466 above ratio times 300bpd/10.5mmscfd feed

1020 condy at 23MMSCFD with heavy summer feed

657 condy at 23MMSCFD with light winter feed

Saf Fuel Gas Comp

Recovery Range EstimateBasis: Quote From Twister for Tanajib using BI-224 composition & recovery =300bpd/10.5mmscfd

Consider the summer pipeline gas to be richer as temps are higher, winter has lower dew point

Winter Case considered as BI-224, summer as Apr.20 analysis

case summer winter Saf Fuel Gas Comp

gas mmscfd 23 23

condy recv. 657 1056

Documents

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