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CO2 capture pilot test at a pressurized coal fired CHP plant
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology.
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology.
2009 (English)In: Energy Procedia, ISSN 1876-6102, Vol. 1, no 1, 1403-1410 p.Article in journal (Refereed) Published
Abstract [en]

CO2 capture from pressurized flue gas using a variation of the hot potassium carbonate process has been demonstrated at a pilot plant with authentic flue gas from the Vartan combined heat and power plant in Stockholm. The plant has served as a proof of concept installation, and has confirmed that: i) the pre-treatment of the flue gas is adequate for protecting the absorbent from degradation, ii) the CO2 capture efficiency is high (> 98 %), iii) no harmful components are fed to the gas turbine, and iv) absorbent degradation is low (0.85 mole percent/month).

Place, publisher, year, edition, pages
2009. Vol. 1, no 1, 1403-1410 p.
Keyword [en]
CO2 capture; demonstration; PFBC; pilot plant; potassium carbonate; SARGAS
National Category
Chemical Process Engineering
Identifiers
URN: urn:nbn:se:kth:diva-10977DOI: 10.1016/j.egypro.2009.01.184ISI: 000276074401062Scopus ID: 2-s2.0-79955404436OAI: oai:DiVA.org:kth-10977DiVA: diva2:233598
Note
QC 20100727Available from: 2009-09-01 Created: 2009-09-01 Last updated: 2010-12-03Bibliographically approved
In thesis
1. Opportunities and uncertainties in the early stages of development of CO2 capture and storage
Open this publication in new window or tab >>Opportunities and uncertainties in the early stages of development of CO2 capture and storage
2009 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The topic of this thesis is carbon dioxide (CO2) capture and storage (CCS), which is a technology that is currently being promoted by industries, scientists and governments, among others, in order to mitigate climate change despite a continued use of fossil fuels. Because of the complex nature of CCS and the risks it entails, it is controversial. The aim of this thesis is to analyse how the technology may be further developed in a responsible manner. In the first part of the thesis different methods for capturing CO2 from industrial processes as well as power plants are analysed. The aim is to identify early opportunities for CO2 capture, which is considered important because of the urgency of the climate change problem. Three potential early opportunities are studied: i) capturing CO2 from calcining processes such as cement industries by using the oxyfuel process, ii) capturing CO2 from pressurised flue gas, and iii) capturing CO2 from hybrid combined cycles. Each opportunity has properties that may make them competitive in comparison to the more common alternatives if CCS is realised. However, there are also drawbacks. For example, while capturing CO2 from pressurised flue gas enables the use of more compact capture plant designs as well as less expensive and less toxic absorbents, the concept is neither suitable for retrofitting nor has it been promoted by the large and influential corporations. The second part of the thesis has a broader scope than the first and is multidisciplinary in its nature with inspiration from the research field of Science and Technology Studies (STS). The approach is to critically analyse stakeholder percep-tions regarding CCS, with a specific focus on the CCS experts. The thesis sheds new light on the complexity and scientific uncertainty of CCS as well as on the optimism among many of its proponents. Because of the uncertain development when it comes to climate change, fossil fuel use and greenhouse gas emissions, the conclusion is that CCS has to be further developed and demonstrated. A responsible strategy for a future development of CCS would benefit from: i) a search for win-win strategies, ii) increasing use of appropriate analytical tools such as life-cycle analysis, iii) a consideration of fossil fuel scarcity and increasing price volatility, iv) funding of unbiased research and v) increasing simultaneous investments in long-term solutions such as renewable energy alternatives and efficiency improvements.

Place, publisher, year, edition, pages
Stockholm: KTH, 2009. viii, 68 p.
Series
Trita-CHE-Report, ISSN 1654-1081 ; 2009:50
Keyword
Acceptance, cement, CCS, CO2 capture and storage, early opportunities, enhanced oil recovery, expert opinions, hybrid power cycles, optimism, oxyfuel combustion, pressurised fluidised bed combustion, pilot plant, potassium carbonate, risk, Sargas, scenario studies, scientific uncertainty, stakeholder perceptions
National Category
Chemical Process Engineering
Identifiers
urn:nbn:se:kth:diva-10985 (URN)978-91-7415-413-9 (ISBN)
Public defence
2009-09-28, F3, Lindstedtsvägen 26, Stockholm, 10:00 (English)
Opponent
Supervisors
Note
QC 20100727Available from: 2009-09-08 Created: 2009-09-01 Last updated: 2010-07-27Bibliographically approved

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