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首页> 外文会议>International Conference on Concentrating Solar Power and Chemical Energy Systems >Thermochemical Storage for CSP via Redox Structured Reactors/Heat Exchangers: the RESTRUCTURE Project
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Thermochemical Storage for CSP via Redox Structured Reactors/Heat Exchangers: the RESTRUCTURE Project

机译：CSP通过氧化还原结构反应器/热交换器的热化学储存：重组项目

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The present work provides an overview of activities performed in the framework of the EU-funded collaborative project RESTRUCTURE, the main goal of which was to develop and validate a compact structured reactor/heat exchanger for thermochemical storage driven by 2-step high temperature redox metal oxide cycles. The starting point of development path included redox materials qualification via both theoretical and lab-scale experimental studies. Most favorable compositions were cobalt oxide/alumina composites. Preparation of small-scale structured bodies included various approaches, ranging from perforated pellets to more sophisticated honeycomb geometries, fabricated by extrusion and coating. Proof-of-concept of the proposed novel reactor/heat exchanger was successfully validated in small-scale structures and the next step included scaling up of redox honeycombs production. Significant challenges were identified for the case of extruded full-size bodies and the final qualified approach related to preparation of cordierite substrates coated with cobalt oxide. The successful experimental evaluation of the pilot reactor/heat exchanger system constructed motivated the preliminary techno-economic evaluation of the proposed novel thermochemical energy storage concept. Taking into account experimental results, available technologies and standard design aspects a model for a 70.5 MW_e CSP plant was defined. Estimated LCOE costs were calculated to be in the range of reference values for Combined Cycle Power Plants operated by natural gas. One of main cost contributors was the storage system itself, partially due to relatively high cost of cobalt oxide. This highlighted the need to identify less costly and equally efficient to cobalt oxide redox materials.
机译：本工作概述了欧盟资助的协作项目重组框架中的活动，其主要目的是开发和验证一个紧凑的结构化反应器/热交换器，用于由2步高温氧化还原金属驱动的热化学存储器氧化物循环。开发路径的起点包括通过理论和实验室规模的实验研究的氧化还原材料资格。最良好的组合物是钴氧化物/氧化铝复合材料。小规模结构体的制备包括各种方法，从穿孔颗粒到更复杂的蜂窝几何形状，通过挤出和涂层制造。在小规模结构中成功验证了所提出的新型反应器/热交换器的概念，下一步包括氧化还原蜂窝生产的扩大。为挤出的全尺寸机构和含有钴钴涂覆的堇青石基材的准备相关的最终合格方法，确定了重大挑战。试点反应堆/热交换器系统的成功实验评估构建的促进了拟议的新型热化学能量储存概念的初步技术经济评价。考虑到实验结果，可用技术和标准设计方面定义了70.5 MW_E CSP工厂的型号。计算估计的LCoE成本是由天然气操作的组合循环发电厂的参考值的范围。主要成本贡献者之一是储存系统本身，部分是由于氧化钴成本相对较高。这突出了需要识别更昂贵的且同样有效的氧化钴氧化还原材料。

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