peterhead ccgt th proposed ccs demo - generation · 2014-01-06 · offshore pipeline peterhead st...
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Peterhead CCGT Proposed CCS DemoJeremy CareyTechnology Manager, SSE Generation
14th March 2011
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SSE Background
Strategy“To deliver sustained real growth in the dividend payable to shareholders through the efficient operation of, and investment in, a balanced range of economically-regulated and market-based energy businesses.”
Generation
Customers
Networks
Services
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As of 8/3/10
• British Isles ‘pure play’Onshore gas storage 4900 MW of gas & oil4360 MW of coal2300 MW of renewables~1500 staff (SSE plc >20k)
SSE - Generation
SSE’s Carbon Reduction GoalTo reduce the carbon-intensityof electricity from SSE power stations by 50% between 2005/6 and 2020 (<300gCO2/kWh)
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Why a Gas CCS Demonstration?• Energy Security
Need flexible plant for dynamic security Attractive forward gas pricesNeed to add capacity soon
• Climate ChangeGas >50% of 2020 UK TWhrs? Gas+CCS <50g/kWhrCoal <20% of 2020 UK TWhrs? Coal+CCS <80g/kWhr
• Fuel PovertyGas+CCS has lower LCOE than Coal+CCS?
• Different Technology Development ChallengesDemonstrated on Coal = Proven on Gas
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Key Gas Capture Challenges
• CO2 Concentration and “85/90% Capture”• Gas <4%; Coal >12%• Taller, wider absorber tower• Capture Plant is more costly on gas
• O2 Concentration • Gas >10%; Coal~6%• O2 accelerates solvent degradation• Solvent management costs higher
• GT Backpressure• Must be avoided!
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Disused HC Field
Peterhead Project Location
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Peterhead Power Station
• 1970’s 2 x 660MW Rankine cycle, HFO fired• 1980’s HFO and gas • 1990’s Miller gas boiler conversion• 1990’s 2 x 120MW OCGTs• 1990’s NTS gas connection (3 gas supplies)• 2000 Repowering Project “Block 1”
• 3 x Siemens V94.3A GTs
• NTS gas fired
• Re-used existing ST
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NER Proposal: Key Parameters• Retrofit capture to a single GT (~385MWe in CC mode)
• Post Combustion (amine)
• Offshore storage in known HC field ~10 million te CO2 over 10 yearsShell, CO2DeepStore / Petrofac
• Re-use of existing pipelines
• Ultra clean fossil energy (< 50 g/kWhr)
• Baseload Operation
• Deliverable to NER timescales (2016)
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Process Overview
Steam Turbine
Gas Turbine HRSG
DCC Absorber Stripper Compression& Dehydration
CleanFlue Gas
Rich Solvent
CO2FlueGas
Steam
Electrical EnergyGenerator
Steam
Onshore Pipeline
St Fergus Compressor
Offshore Pipeline
Peterhead
St Fergus Gas Terminal
Goldeneye Platform
Lean Solvent
Shell / Offshore Store
Xmas Tree
Existing Equipment
New Equipment
Change of Use
Key
Onshore Pipeline
St Fergus Compressor
Offshore Pipeline
Lean Solvent
Shell / CO2DS
Existing Equipment
New Equipment
Change of Use
Key
GasSupply
Grid Connection
Pore Space
Injection Manifold
Well Completion
Pressure Control
CO2
Gas Turbine
Steam TurbineHRSG
DCC Absorber Stripper Compression& Dehydration
Generator
Xmas Tree
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A Deliverable Project…• Existing CCGT station
• Existing Grid Connection• Existing fuel supply• Existing work force• Existing utility capacity• Existing available land• Precedent Planning Consent (DF1)
• Existing Transport Infrastructure• Existing CO2 export infrastructure
• Existing HC storage site
• Station Manager Commitment• CEO Commitment
But DECC or NER+DECC funding required
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Questions?
“Peterhead is probably the best site in the country for a ~300MWe demo CCS retrofit project on a gas fired power station”
Prof Jon Gibbins