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Cost Structure of a Postcombustion CO_2 Capture System Using CaO

机译：CaO燃烧后CO_2捕集系统的成本结构

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摘要

This paper presents the basic economics of an emerging concept for CO_2 capture from flue gases in power plants. The complete system includes three key cost components: a full combustion power plant, a second power plant working as an oxy-fired fluidized bed calciner, and a fluidized bed carbonator interconnected with the calciner and capturing CO_2 from the combustion power plant. The simplicity in the economic analysis is possible because the key cost data forthe two major first components are well established in the open literature. It is shown that there is clear scope for a breakthrough in capture cost to around 15 $/t of CO_2 avoided with this system. This is mainly because the capture system is generating additional power (from the additional coal fed to the calciner) and because the avoided CO_2 comes from the capture of the CO_2 generated by the coal fed to the calciner and the CO_2 captured (as CaCO_3) from the flue gases of the existing power plant, that is also released in the calciner.
机译：本文介绍了从电厂烟气中捕获CO_2的新兴概念的基本经济学原理。完整的系统包括三个关键的成本组成部分：一个完整​​的燃烧发电厂，一个用作氧气流化床煅烧炉的第二发电厂以及一个与煅烧炉互连并从燃烧发电厂捕获CO_2的流化床碳酸化器。经济分析的简单性是可能的，因为两个主要的第一部分的关键成本数据在公开文献中已得到充分确立。结果表明，使用该系统可以避免捕集成本突破约15 $ / t CO_2的明确范围。这主要是因为捕集系统正在产生额外的电力（来自送入煅烧炉的额外煤），并且避免的CO_2来源于捕集送入煅烧炉的煤产生的CO_2以及从煅烧炉中捕集的CO_2（作为CaCO_3）现有电厂的烟气，也将其释放到煅烧炉中。

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