Economic implications of pre- and post-combustion calcium looping configurations applied to gasification power plants
Economic implications of pre- and post-combustion calcium looping configurations applied to gasification power plants
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DOI：
10.1016/j.ijhydene.2014.05.033
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发表时间：
2014-07
影响因子：
7.2
通讯作者：
C. Cormos
中科院分区：
文献类型：
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作者：
C. Cormos
气化是一种很有前途的转化技术，可以提供高能源效率，同时降低碳捕获的能源和成本损失。本文致力于对整体煤气化联合循环 (IGCC) 发电厂的燃烧前和燃烧后钙循环 (CaL) 配置进行深入的经济评估。多联产能力，例如氢和电力联产也进行了讨论。燃烧后 CaL 选项是一种气化发电厂，其中来自燃气轮机的烟气在碳化-煅烧循环中进行二氧化碳捕集处理。在预燃烧 CaL 选项中，吸附剂增强水煤气变换 (SEWGS) 功能用于生产用于发电的氢气。作为基准案例，考虑了没有碳捕获的传统气化发电厂。评估案例的净发电量在 550–600 MW 范围内，碳捕获率超过 95%。燃烧前捕集配置也在氢气和电力热电联产场景中进行了评估。评估集中于资本成本、具体投资成本、运营和维护（O&M）成本、二氧化碳去除和避免成本、电力成本、技术和经济假设对关键经济指标的敏感性分析等估算。
Gasification is a promising conversion technology to deliver high energy efficiency simultaneously with low energy and cost penalties for carbon capture. This paper is devoted to in-depth economic evaluations of pre- and post-combustion Calcium Looping (CaL) configurations for Integrated Gasification Combined Cycle (IGCC) power plants. The poly-generation capability, e.g. hydrogen and power co-generation, is also discussed. The post-combustion CaL option is a gasification power plant in which the flue gases from the gas turbine are treated for CO2capture in a carbonation–calcination cycle. In pre-combustion CaL option, the Sorbent Enhanced Water Gas Shift (SEWGS) feature is used to produce hydrogen which is used for power generation. As benchmark case, a conventional gasification power plant without carbon capture was considered. Net power output of evaluated cases is in the range of 550–600 MW with more than 95% carbon capture rate. The pre-combustion capture configuration was evaluated also in hydrogen and power co-generation scenario. The evaluations are concentrated for estimation of capital costs, specific investment cost, operational & maintenance (O&M) costs, CO2removal and avoidance costs, electricity costs, sensitivity analysis of technical and economic assumptions on key economic indicators etc.