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Capture-ready power plants : options, technologies and economics

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dc.contributor.advisor Howard J. Herzog. en_US Bohm, Mark (Mark C.) en_US
dc.contributor.other Massachusetts Institute of Technology. Technology and Policy Program. en_US 2006-11-07T12:42:47Z 2006-11-07T12:42:47Z 2006 en_US 2006 en_US
dc.description Thesis (S.M.)--Massachusetts Institute of Technology, Engineering Systems Division, Technology and Policy Program, 2006. en_US
dc.description Includes bibliographical references (p. 93-95). en_US
dc.description.abstract A plant can be considered to be capture-ready if, at some point in the future it can be retrofitted for carbon capture and sequestration and still be economical to operate. The concept of capture-ready is not a specific plant design; rather it is a spectrum of investments and design decisions that a plant owner might undertake during the design and construction of a plant. Power plant owners and policymakers are interested in capture-ready plants because they may offer relatively low cost opportunities to bridge the gap between current coal-fired generation technologies without CO2 capture to future plants that may be built from the start to capture CO2, and reduce the risks of possible future regulations of CO2 emissions. This thesis explores the design options, technologies and costs of capture-ready coal-fired power plants. The first part of the thesis outlines the two major designs that are being considered for construction in the near-term - pulverized coal (PC) and integrated gasification/combined cycle (IGCC). It details the steps that are necessary to retrofit each of these plants for CO2 capture and sequestration. Finally, for each technology, it provides a qualitative assessment of the steps that can be taken to reduce the costs and output de-rating of the plant after a retrofit. en_US
dc.description.abstract (cont.) The second part of the thesis evaluates the lifetime (40 year) net present value (NPV) costs of plants with differing levels of pre-investment for CO2 capture. Three scenarios are evaluated - a baseline supercritical PC plant, a baseline IGCC plant and an IGCC plant with pre-investment for capture. This analysis evaluates each technology option under a range of CO2 tax scenarios and determines the most economical choice and year of retrofit. The results of this thesis show that a baseline PC plant is the most economical choice under low CO2 tax rates, and IGCC plants are preferable at higher tax rates. Little difference is seen in the lifetime NPV costs between the IGCC plants with and without pre-investment for CO2 capture. The third part of this thesis evaluates the concept of CO2 "lock-in". CO2 lock-in occurs when a newly built plant is so prohibitively expensive to retrofit for CO2 capture that it will never be retrofitted for capture, and offers no economic opportunity to reduce the CO2 emissions from the plant, besides shutting down or rebuilding. The results of this analysis show that IGCC plants are expected to have significantly lower lifetime CO2 emissions than a PC plant, given moderate (10-35 $/ton CO2) initial tax rates. en_US
dc.description.abstract (cont.) Higher (above $40) or lower (below $7) initial tax rates do not result in significant differences in lifetime CO2 emissions from these plants. Little difference is seen in the lifetime CO2 emissions between the IGCC plants with and without pre-investment for CO2 capture. en_US
dc.description.statementofresponsibility by Mark Bohm. en_US
dc.format.extent 99 p. en_US
dc.format.extent 4371818 bytes
dc.format.extent 4375914 bytes
dc.format.mimetype application/pdf
dc.format.mimetype application/pdf
dc.language.iso eng en_US
dc.publisher Massachusetts Institute of Technology en_US
dc.rights M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. en_US
dc.subject Technology and Policy Program. en_US
dc.title Capture-ready power plants : options, technologies and economics en_US
dc.type Thesis en_US S.M. en_US
dc.contributor.department Massachusetts Institute of Technology. Technology and Policy Program. en_US
dc.identifier.oclc 70900723 en_US

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