Canadian Clean Power Coalition: Clean Coal-Fired Power Plant Technology To Address Climate Change Concerns Presented to Gasification Technologies 2002 San Francisco, CA October 27 - 30, 2002 Bob Stobbs, Project Leader, SaskPower The Canadian Clean Power Coalition • A national association of coal and coal-fired electricity producers • Represents over 90 percent of Canada’s coal- fired electricity generation • Our objective is to demonstrate that coal-fired electricity generation can effectively address all environmental issues projected in the future, including CO2 Coalition Participants • ATCO Power Canada Ltd. • EPCOR Utilities Inc. • EPRI (Electric Power Research Institute) • IEA (GHG and CCC) • Luscar Ltd. • Nova Scotia Power Inc. • Ontario Power Generation Inc. • Saskatchewan Power Corporation • TransAlta Utilities Corporation Government Participation • Natural Resources Canada • Alberta Energy Research Institute • Saskatchewan Industry and Resources The CCPC Project A public-private initiative to: • Research and develop clean coal technology • Build a full-scale demonstration project for the removal of carbon dioxide and other emissions from an existing coal-fired power plant by 2007 • Develop clean coal technology for new power plants - demonstration by 2010 Why do this? • Coal is vital for electricity generation nationally and internationally – for the long term. • We must address the pressing air quality issues associated with coal-fired generation. • Advanced technology is the long-term solution. • Potential for technology which is transferable and exportable. Technology Development Programs In Place • IEA GHG R&D Program – 18 countries sharing funding to evaluate technology options for mitigation of GHG emissions from fossil fuel production and use. • US DOE Vision 21 program - targets technology development for power generation for ~2015. • Carbon Capture Project – US DOE, BP, Chevron, Suncor & EnCana seek to demonstrate advanced capture technology for gas & refinery residue combustion. Planned CO2 Related Demonstrations • CO2 use for coalbed methane (Alberta Research Council in Alberta and BP Amoco in the U.S.) • Gas fired solid oxide fuel cells with CO2 extraction (Shell Hydrogen and Siemens-Westinghouse) CO2 Related Demonstrations In Place • CO2 capture from coal syngas (Prairie Gasification for the Weyburn Enhanced Oil Recovery project) • CO2 use in enhanced oil recovery (Encana Weyburn project) • CO2 sequestration in saline aquifers (IEA et al Sleipner project) • Boundary Dam Pilot Test for the University or Regina - International Test Centre What is missing? • Coal fired power generation project – Many demonstration projects now in place and planned – None are power generation CCPC Plan: Demonstration of CO2 Extraction From Power Plants • Construct and operate a full-scale demonstration project to remove greenhouse gas and all other emissions of concern from an existing coal-fired power plant by 2007 • Demonstrate a low emission technology for new power plants by 2010 • Range of fuels includes – bituminous, sub- bituminous, lignite. Retrofit Options for CO2 Extraction • Best options are: – Amine scrubbing of flue gas – CO2/O2 Combustion • But major challenge to reduce energy requirements • Study will focus on integration options Flue Gas Amine Scrubbing CO 2 to Cleanup and Compression Cleaned Flue Gas to Atmosphere CO 2 Stripper Absorber Tower Flue Gas from Plant CO 2 Stripper Reboiler CO2/ O2 Combustion Air Nitrogen Flue Gas (~97% CO 2 ) Air Recycle ~75% Separation Drier Flue gas Boiler Oxygen ~97% CO 2 Compressor Coal Water G Generator Turbine Feed Pump Greenfield Plant Technology Options • Pre-screening study showed gasification as best option • Provides high efficiency, ease of emission reduction and lowest energy penalty to add CO2 capture • Efficiency improvements from new advanced gas turbines will benefit technology. Coal Gasification Air Air Separation CO2 to CO2 Cleanup Plant Pipeline & Compression Oxygen Coal Fuel Gas Gas Shift CO2 Preparation Gasifier Cleaning Reactor Cooling Extraction Water Sulphur Hydrogen Slag Flue Gas Steam Waste Heat Gas To Turbine Boiler Turbine Atmosphere Electric Electric Power Power CO2 Use & Storage Evaluation • Reviews prior work on EOR & CBM use in western sedimentary basin. • Separate study for Nova Scotia to examine potential for CBM in coal beds. • Evaluation of storage options in deep saline aquifers and depleted reservoirs Emissions Control Study • Looks at retrofit emission control for NOx, SOx, Hg, particulates and all other pollutants • Excludes CO2 • Allows net costs for CO2 to be calculated by comparison with the other studies • Prior CO2 extraction studies usually include capture of other emissions but get no financial credit. This will allow more realistic costs to be determined. Project Status • Funding for Phase I Feasibility studies in place. • Work scopes for initial studies defined and contractors selected. • Pre-screening study completed 2002 • Studies now in progress to assess technology options and costs for: – Retrofit plant options – Greenfield plant options – Control options for emissions all except CO2 – Examination of CO2 use and storage • Planning commenced for the next phase – Detailed engineering, permitting, construction Project Schedule Month Task 03 06 09 12 15 18 21 24 27 30 33 36 Coordination Retrofit Emission Control Assessment Retrofit CO 2 Control Options Assessment New Plant Technology Assessment New Plant Technology Selection C O 2 Utilization Assessment Final Report Total Cost: $5,000,000 In Summary • The Canadian Clean Power Coalition is moving forward with plans to demonstrate technology to remove all emissions by 2007 in a retrofit project. • The coalition represents the majority of coal interests in Canada • The coalition has expanded to include international participation with the addition of the IEA and EPRI • The goal is to maintain coal as a key option for power generation in Canada, while meeting all environmental concerns about its use.