Carbon Capture and the Boundary Dam Project

Transcription

1 Carbon Capture and the Boundary Dam Project Carbon Management 2011: It's Everybody's Business Saskatoon November 30, 2011 Regina December 1, 2011 Lucas Miller David Cameron

2 Presentation Overview Stantec Overview Carbon Capture Boundary Dam ICCS Other Projects

3 Introduction to Stantec Established in 1954 Publicly traded on two stock exchanges -TSX: STN (1994) -NYSE: STN (2005) 57 years of secure and stable growth Over 160 locations in North America Over 10,500 employees

4 Corporate Organization Buildings Environment Industrial & Power Transportation Urban Land Architecture & Interior Design Buildings Engineering Facilities Planning & Operations Environmental Infrastructure Environmental Management Power Resources Industrial Buildings & Facilities Mining Program & Project Management Transportation Infrastructure Transportation Planning & Traffic Engineering Infrastructure Management & Pavement Engineering Planning & Landscape Architecture Urban Land Engineering Surveys/ Geomatics

5 Clean Coal Centre of Excellence Multi discipline engineering staff Engineering aspects of power plants and air quality Process modeling for technology and integration Environmental aspects of clean coal technologies Conceptual studies, feasibility studies, engineering design, permitting

6 Clean Coal Studies Pre Combustion - Costing and Economics for IGCC Post Combustion - Amine CO 2 Capture - Chilled Ammonia Process - Solid Sorbent Oxyfuel PC and CFB Boilers

7 CCS Projects SaskPower: Boundary Dam ICCS - Owners Engineer TransAlta: Pioneer Project - Owners Engineer Shell: Quest Capture and Storage Project - Regulatory and Environmental Swan Hills: Syn Fuels - Regulatory and Environmental Enbridge: Alberta Saline Aquifer Project

8 Background Boundary Dam Generating Station: 6 Lignite Fired Units: 2x66, 3x150 MW, 1x300 MW Unit 3 is scheduled for retirement in 2013 and is focus of Carbon Capture Cooling Water from Reservoir Mine Mouth Plant Near Oil Fields

9 Objectives for BD ICCS Upgrade of turbine and boiler 30 year life extension of unit Improve emissions Install 90 wt% CO 2 capture 1x10 6 tpy Maximize recovery of usable heat

10

11

12

13 Steam FURNACE Heat Recovery Loop N2,Water Minor Nox, CO 2 Traces: PM, Hg, Z 115 MW COAL AIR HTR ESP SO 2 Absorber CO 2 Absorber S T A C K Reboiler Reboiler ASH Waste Storage / Sale for Concrete Production SO 2 Conversion to sulfuric Acid for sale or deep Geological storage as Liquid SO 2 Compressor PERMANENT GEOLOGICAL STORAGE EOR Grade CO 2

14 Flow Diagram

15

16 Cooling Implications Boundary Dam cooled via reservoir - Reservoir constructed for Boundary Dam use, has since become wildlife habitat and source of drinking water for Estevan - Could it reject the additional heat of carbon capture?

17 Cooling Implications Modeled the reservoir using Water quality Analysis Simulation Program (WASP) 7.3 Verified results with in situ measuring

18

19 Cooling Model

20 Cooling Implications Concluded that reservoir could be overloaded during peak summer conditions, but has some residual capacity during the rest of the year. Indicated that supplementary cooling would be required. Evaporative mechanical cooling towers were included.

21 Environmental/Emissions Modeling of a Vent Stack Cool, high humidity, high velocity, clean Criteria Air Contaminants (CACs modeled with AERMOD) Vessel height already quite tall Check to confirm sufficient dispersion

22 Stack Emissions CO 2 Reduced by 90% SO x Zero NO x Reduced by 50% Particulate Virtually zero Amine/degradation <0.1 ppm

23 Expected Performance Performance Gross Electrical Output CO 2 Capture Out of Service (MW) BD3 Today BD ICCS (2013) Net Electrical Output (MW) Years Design Life Remaining 0 30 Coal Consumed (tonnes/yr) 815, ,000 CO 2 Emissions (kg/mwh) 1, CO 2 to EOR (tonnes/yr) 0 1x10 6 CO 2 Purity % pure

24 BD Unit 3 As-Built 1968

25 Preparation for Outage Electrical and controls done Outage material handling in place Retracted roof 660 tonne crane erected Materials on site

26 Outage Day 10 Demolition in progress Turbine Steam lines Deaerator FWH BFP CEP Boiler: Gutted Corners open Access holes 7 th fl & bottom Economizer and a/h gone

27 Outage Day 60

28 Construction complete Turbine Steam lines Deaerator FWH BFP CEP Boiler: Superheater Reheater Economizer Low NOx burners Air heaters New Carbon Ready Plant 150 days after retirement

29 Summary BD ICCS will be first of its kind Overall heat integration increased overall performance Emissions extremely low Perceived CO 2 capture technology and scale up risks were reduced through multiple studies Turndown and abnormal operating conditions were important for overall integration of the units

30 Acknowledgements The Boundary Dam information is based on work that Stantec carried out in conjunction with the SaskPower Clean Coal Team

31 Questions? Contact Information: David Cameron Lucas Miller