Derates and Outages Analysis - A Diagnostic Tool for Performance Monitoring of SaskPower’s Boundary Dam Unit 3 Carbon Capture Facility

13 Pages Posted: 6 Apr 2021

See all articles by Dominika Janowczyk

Dominika Janowczyk

International CCS Knowledge Centre

Stavroula Giannaris

The International CCS Knowledge Centre

Keith Hill

SaskPower Corporation

Jonathan Ruffini

SaskPower Corporation

Brent Jacobs

International CCS Knowledge Centre

Yuewu Feng

International CCS Knowledge Centre

Wayuta Srisang

International CCS Knowledge Centre

Corwyn Bruce

International CCS Knowledge Centre

Date Written: April 6, 2021

Abstract

Establishing carbon capture and storage (CCS) as a viable carbon dioxide (CO2) emission mitigation strategy for various industries will require identifying and eliminating existing barriers to achieving desired performance. SaskPower’s Integrated Carbon Capture and Storage Project on Boundary Dam’s Unit 3 (BD3) began operations in October of 2014. By early December 2020, the facility had captured over 3.8 million metric tonnes of CO2. Although no small feat, the cumulative volume of CO2 captured by late 2020 does not reflect the expected cumulative capture volume considering the five-year operational window and the size of the capture facility. As with many “first of a kind” facilities, unforeseen barriers hindered the performance of the capture facility. A couple of challenges with CCS application to coal-fired power plants have been the lost capture potential due to power plant outages and derates (which limits flue gas availability to the capture island) and the performance of capture island. Capture operations stop during all outages of the power plant; this presents a constraint to be accommodated when applying CCS. Minimizing costs by improving capture island performance while also satisfying outage constraints is key. As CCS technologies seek increased deployment, not limited to electricity generation but to other industries as well, it is necessary to identify, review, and eliminate existing barriers of capture system performance. Performance evaluation is becoming increasingly important. Derate and outage analysis identifies areas of concern and provides a means for reporting performance. Such analysis helps to better understand how the process works and to identify process bottlenecks, for daily operation decisions as well as long term impacts.

This paper presents and explains fundamental concepts of data analysis to improve derates and outage analysis at BD3. An analytic model to evaluate the outages and derates of the coal-fired unit and the carbon capture facility is presented. The proposed model accounts for hourly data from the CO2 capture plant which was extracted from the OSI PI historian during the six-year operating period (October 2, 2014- October 1, 2020). The model describes how basic Microsoft Excel analysis can be used to detect outage and derate problems. Data analysis included: flue gas flow estimation; CO2 mol fraction; CO2 emissions, maximum theoretical amount of CO2 captured by the plant; and actual amount of CO2 capture by the plant.

Keywords: Boundary Dam, SaskPower, Microsoft Excel, Derates, Outages, Carbon Capture and Storage, Post Combustion Capture

Suggested Citation

Janowczyk, Dominika and Giannaris, Stavroula and Hill, Keith and Ruffini, Jonathan and Jacobs, Brent and Feng, Yuewu and Srisang, Wayuta and Bruce, Corwyn, Derates and Outages Analysis - A Diagnostic Tool for Performance Monitoring of SaskPower’s Boundary Dam Unit 3 Carbon Capture Facility (April 6, 2021). Proceedings of the 15th Greenhouse Gas Control Technologies Conference 15-18 March 2021, Available at SSRN: https://ssrn.com/abstract=3820207 or http://dx.doi.org/10.2139/ssrn.3820207

Dominika Janowczyk

International CCS Knowledge Centre

198 – 10 Research Drive
Regina, Saskatchewan S4S 7J7
Canada

Stavroula Giannaris (Contact Author)

The International CCS Knowledge Centre ( email )

198 – 10 Research Drive
Regina, Saskatchewan S4S 7J7
Canada

Keith Hill

SaskPower Corporation ( email )

6NE-2025 Victoria Avenue
Regin, S4P 0S1
Canada

Jonathan Ruffini

SaskPower Corporation ( email )

6NE-2025 Victoria Avenue
Regin, S4P 0S1
Canada

Brent Jacobs

International CCS Knowledge Centre ( email )

198 – 10 Research Drive
Regina, Saskatchewan S4S 7J7
Canada

Yuewu Feng

International CCS Knowledge Centre ( email )

198 – 10 Research Drive
Regina, Saskatchewan S4S 7J7
Canada
3065655959 (Phone)
S4S 7J7 (Fax)

Wayuta Srisang

International CCS Knowledge Centre

198 – 10 Research Drive
Regina, Saskatchewan S4S 7J7
Canada

Corwyn Bruce

International CCS Knowledge Centre ( email )

198 – 10 Research Drive
Regina, Saskatchewan S4S 7J7
Canada

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