SOFC PFD

R 104

CO

MB

105

R 104

CO

MB

105

FC 331HX 103

HX 221

WGS222

DS101

WP 441 HX 443

HX 223

FH 102

PSA 442

103

101

105

104

106

110

107

108

109

102

221

226

225

227

229

228

330

331

224

223

222

445a

440

447

446a

444

443

441442

P 444

COMP 224

111

445b

446b

COMP 445

COMP 447

DS 101 FH 102 HX 103 R 104 COMB 105 HX 221 WGS 222 HX 223 COMP 224 FC 331 WP 441 PSA 442 HX 443 P-444 Comp-445 Ref-446 Comp-447Desulfur

izerFuel

HumidifierFuel

PreheaterReformer Combustor Cathode

Recuperator

Water Gas Shift Reactor

Air Preheater

Air Compressor

Solid Oxide

Fuel Cell

Water Purifier

Pressure Swing

Absorber

Anode Condenser

Water Pump

PSA Compressor

Chiller Hydrogen Compressor

Ref 446

Fuel PreparationR

104

CO

MB

105

R 104

CO

MB

105

HX 103DS101

FH 102103

101

105

104

106

110

107

109

102

227

330

331111

442

108

Desulfurizer (DS-101)

• 2 ppm H2S in natural gas feed

• H2S removed in DS-101 with disposable carbon filters

• 10% of CH4 fed to combustor

• 90% of CH4 fed fuel humidifier

Fuel Humidifier (FH-102)

• 1.25 Kmol H20 per Kmol CH4 fed to FH-102

• Heat provided from combustor exhaust

Fuel Preheater (HX-103)

• Heat provided from fuel cell exhaust

Reformer (R-104)

• Equilibrium determined to be:– 85% CH4 → CO

– 15% CH4 → CO2

• CH4 + H2O → CO + 3H2

• CH4 + 2H2O → CO2 + 4H2

• Heat provided from reaction in combustor

Combustor (COMB -105)

• Extent of reaction for combustion assumed to be 100%

• CH4 + 2O2 → CO2 + 2H2O

• Necessary O2 provided from fuel cell air exhaust

Air Handling and WGS

226HX 221

WGS222

HX 223

110108

221

226

225

227

229

228

224

223

222

COMP 224

Cathode Recuperator (HX-221)

• Heat provided by combustor exhaust

Water Gas Shift (WGS-222)

• CO + H2O → CO2 + H2

• Equilibrium determined to be:

Air Preheater (HX-223)

• Heat provided by water gas shift exhaust

Air Compressor (COMP-224)

• Air intake for the system

• 6.65 standard cubic meters per minute flow

Solid Oxide Fuel Cell

FC 331107

226

330

331

Solid Oxide Fuel Cell (FC-331)

Post Processing

WP 441 HX 443 PSA 442

229

223

445a

440

447

446a

444

443

441442

P 444

445b

446b

COMP 445

COMP 447

Ref 446

Water Purifier (WP-441)

Pressure Swing Absorber (PSA-442)

Anode Condenser (HX-443)

Water Pump (P-444)

PSA Compressor (COMP-445)

Chiller (Ref -446)

Hydrogen Compressor (COMP-447)