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The Cost of Carbon Capture and Storage for Natural Gas Combined Cycle Power Plants

机译:天然气联合循环电厂的碳捕集与封存成本

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摘要

This paper examines the cost of CO-2 capture and storage (CCS) for natural gas combined cycle (NGCC) power plants. Existing studies employ a broad range of assumptions and lack a consistent costing method. This study takes a more systematic approach to analyze plants with an amine-based postcombustion CCS system with 90% CO-2 capture. We employ sensitivity analyses together with a probabilistic analysis to quantify costs for plants with and without CCS under uncertainty or variability in key parameters. Results for new baseload plants indicate a likely increase in levelized cost of electricity (LCOE) of $20-32/MWh (constant 2007$) or $22-40/MWh in current dollars. A risk premium for plants with CCS increases these ranges to $23-39/MWh and $25-46/MWh, respectively. Based on current cost estimates, our analysis further shows that a policy to encourage CCS at new NGCC plants via an emission tax or carbon price requires (at 95% confidence) a price of at least $125/t CO-2 to ensure NGCC-CCS is cheaper than a plant without CCS. Higher costs are found for nonbaseload plants and CCS retrofits.
机译:本文研究了天然气联合循环(NGCC)发电厂的CO-2捕集与封存(CCS)成本。现有研究采用了广泛的假设,并且缺乏一致的成本核算方法。这项研究采用了更系统的方法来分析具有90%CO-2捕集率的基于胺的燃烧后CCS系统。我们采用敏感性分析和概率分析来量化在关键参数不确定性或可变性下有或没有CCS的工厂的成本。新的基本负荷电厂的结果表明,按平价计算的电力成本(LCOE)可能增加20-32美元/兆瓦时(2007年不变价)或以当前美元计算的22-40美元/兆瓦时。具有CCS的电厂的风险溢价将这些范围分别提高到$ 23-39 / MWh和$ 25-46 / MWh。根据当前成本估算,我们的分析还表明,通过排放税或碳价鼓励新NGCC工厂中CCS的政策要求(在95%的置信度下)至少需要$ 125 / t CO-2的价格才能确保NGCC-CCS比没有CCS的工厂便宜。对于非基本负荷工厂和CCS改造,发现较高的成本。

著录项

  • 来源
    《Environmental Science & Technology》 |2012年第6期|p.3076-3084|共9页
  • 作者

    Edward S. Rubin; Haibo Zhai;

  • 作者单位

    Department of Engineering and Public Policy, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States;

    Department of Engineering and Public Policy, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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