Callide Oxyfuel Project: From Concept to Commissioning Chris Spero 2nd IEA GHG Oxyfuel Combustion Conference Tuesday, 13 September 2011 Keynote Address
Presentation Overview
• Project history • Project structure, management and contracting strategy • Project outline & permitting • Current status of Callide A works • Key issues and lessons learned • Future deployment of oxyfuel technology
Central Queensland – The Morning Bulletin (May 1965) The name ‘Callide’ was first used by pastoralist Charles Archer in 1853 to describe his holdings in the area, and is based on the Greek ‘Kallos’ meaning good’.
Project history
Project structure
Contracting and project management
Callide A Demonstration – Simplified Steam Flow 37.7kg/s or 136 t/h Pressure 4.1MPa, Temperature 460oC
Boiler Exit Flue Gases
Chimney Stack
350oC Flow: 13.2kg/s Height: 76m
44.9kg/s
Pulverised Coal Consumption 5.5 kg/s 20 tph Quality HHV: 19 MJ/kg ar Ash: 21% ar Moisture: 14% ar Sulfur: 0.3% daf Anglo Callide Coal mine
Feed Gas to CO2 Plant Flue Gas Processed Flow: 1.7kg/s Temp ~ 150oC
Recirculated Flue Gases Oxygen (GOX) Purity: 98 vol% Oxygen Pressure : 180kPa(a) Flow: 7.6kg/s Size: 2 x nominal 330 TPD Air Liquide Sigma cryogenic ASUs
Permitting Stage 1 – Callide A • Exempted from development approval under local Government Planning Scheme – not deemed to be a material change of use • Amendments proposed to existing Callide A environmental authority Vented gas streams from CO2 CPU Condensates from flue gas scrubber columns Define additional release points and monitoring regime Stage 2 – CO2 road transport • Carbon Dioxide (CO2) is a Dangerous Good (Class 2.2) under the Queensland Transport Act Stage 2 – CO2 storage • Greenhouse Gas Storage Act 2009 (QLD) • Greenhouse Gas Storage Regulation 2010 (QLD) • Environmental Protection Act 1994 (QLD
Callide A Unit 4 - Original
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Boiler Plant/Equipment Removed Ready for New Equipment
U3 Multiclone to Remain Cable Tray to Fabric Filters to Remain
Walkway to Fabric Filter to Remain
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Callide A Unit 4 - After Oxfuel Retrofit Oxygen Flue Gas Before Air Heaters Flue Gas After Air Heaters Flue Gas (Clean after FF bags)
New Primary Gas Heater
Recycled Gas Rich CO2 Flue Gas to CPU Secondary Recycled Gas
1 of 1440 Fabric Filter (FF) Bags
Cold Primary Recycled Gas to Mills Hot Primary Recycled Gas to Mills
New Feedwater Heater Fabric Filter
Existing Air Heater
FROM ASU
TO CPU
Air Intake
Stack
Dust
FDF (1x100%)
IDF(1x100%) PRE SCRUBBER H2O Remover
FDF = Forced Draft Fan
IDF = Induced Draft Fan
Pumps & Heat Exchangers
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Callide A Unit 4 - After Oxfuel Retrofit
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Boiler/Stack/CO2CPU - Flue gas mass balance
FDF To boiler: 30 kg/s
GRF From boiler: 44.9 kg/s
Stack: 13.2 kg/s Blower
CPU: 1.7 kg/s
CO2 CPU - Schematic
Driers LP Scrubber
HP Scrubber Courtesy of ALE
Cold box/ inerts separators
Ammonia refrigeration plant
CO2 CPU – process details 75 t/day liquid product Parameter Flow rate Temperature Pressure Composition H2O O2 N2 (+ Ar) CO2 SO2 NOx Particulate Trace elements (As, Be, Cd, Hg, V)
