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parametric investigation of the Chilled Ammonia Process from energy and economic perspectives

机译：能源和经济角度对冷冻氨过程的参数研究

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摘要

As carbon dioxide anthropogenic generation and climate change appear to be correlated, carbon capture becomes advisable, in particular if applied to coal-fired power plants. The Chilled Ammonia Process (CAP) is a promising technology to be proved for the purpose. Continuing an ongoing study, this work examines the integration of Ultra Super Critical (USC) power plants with CAP, conducting a parametric investigation on the design parameters of the capture block in order to find the optimum from an energy perspective, analyzing then in details the power block and estimating ultimately the overall investment and annual costs. The commercial code Aspen Plus and the in-house research code GS are employed. The index SPEC-CA is adopted as preferred figure of merit of the global performance. With respect to a reference plant of 758 MW_e net electric production at 45.2% net electric efficiency, the carbon capture of 88.4% of the generated CO_2 reduces the net electrical power by 19% and the net electrical efficiency by 8.6% points. The optimum SPECCA is 3.22 MJ/kgCO_2 and the corresponding specific heat duty to the reboiler is 2.46 MJ/kgCO_2. Finally, despite the investment cost of the capture block is about 15% of the power block, the cost of electricity increases from 59.9 to 82.4 ∈/MWh_e because of the net electric efficiency penalty, the additional operation and maintenance costs as well as the consumable costs. The resulting cost of avoided CO_2 is 38.6 ∈/t_(CO_2). For comparison, the European Benchmark Task Force (EBTF) computes for conventional MEA a SPECCA of more than 4 MJ/kgCO_2, a cost of electricity of approximately 92 ∈/MWh_e and a cost of avoided CO_2 of about 51 ∈/t_(CO_2).
机译：由于二氧化碳的人为产生和气候变化似乎是相关的，因此碳捕集是可取的，特别是如果应用于燃煤发电厂。冷冻氨法（CAP）是一项有前途的技术，将为此目的进行证明。继续进行中的这项研究，这项工作研究了超临界（USC）电厂与CAP的集成，对捕集块的设计参数进行了参数研究，以便从能源角度寻找最佳方案，然后详细分析并最终估算总体投资和年度成本。使用商业代码Aspen Plus和内部研究代码GS。指标SPEC-CA被用作全球绩效的首选绩效指标。相对于净发电效率为45.2％的758兆瓦e净发电量的参比工厂，所产生的CO_2的88.4％的碳捕集减少了19％的净电功率和8.6％的净电效率。最佳SPECCA为3.22 MJ / kgCO_2，而对再沸器的相应比热负荷为2.46 MJ / kgCO_2。最后，尽管捕获模块的投资成本约为功率模块的15％，但由于净电效率损失，额外的运行和维护成本以及易耗品，电力成本从59.9上升到82.4ε/ MWh_e费用。避免的CO_2的最终成本为38.6∈/ t_（CO_2）。为了进行比较，欧洲基准工作组（EBTF）计算出的常规MEA的SPECCA大于4 MJ / kgCO_2，电费约为92ε/ MWh_e，避免的CO_2成本约为51ε/ t_（CO_2） 。

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  • 来源
    《Fuel》 |2012年第2012期|p.74-83|共10页
  • 作者

    Gianluca Valenti; Davide Bonalumi; Ennio Macchi;

  • 作者单位

    Politecnico di Milano, Dipartimento di Energia, Via R. Lambruschini 4, 20156 Milano, Italy;

    Politecnico di Milano, Dipartimento di Energia, Via R. Lambruschini 4, 20156 Milano, Italy;

    Politecnico di Milano, Dipartimento di Energia, Via R. Lambruschini 4, 20156 Milano, Italy;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    ultra super critical; post-combustion capture; chilled ammonia process;

    机译：超超临界燃烧后捕获;冷冻氨法;

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