Investigation of hydrogen and power co-generation based on direct coal chemical looping systems
Investigation of hydrogen and power co-generation based on direct coal chemical looping systems
复制标题
DOI：
10.1016/j.ijhydene.2013.11.123
复制
发表时间：
2014-02
影响因子：
7.2
通讯作者：
A. Cormos;C. Cormos
中科院分区：
文献类型：
--
作者：
A. Cormos;C. Cormos
本文以煤直接化学循环系统为基础，对化石燃料完全脱碳的氢能发电进行了评价。作为一个说明性的例子，铁基化学环路系统在不同的工厂配置中进行了评估。这些设计产生300-450兆瓦的净电力，并在0-200兆瓦(LHV)范围内灵活输出氢气。被评估的工厂概念具有灵活的氢气输出的能力是现代能源转换系统中集成的一个重要方面。被评估的概念的碳捕获率几乎是总和(>；99%)。本文详细介绍了已评估的核电站配置、运行方面以及质量和能量集成问题。出于比较的原因，还提出了基于合成气的化学环概念和基于Selexol®的预燃捕获配置。与基于合成气的循环系统和基于溶剂的碳捕获配置相比，直接煤化学循环配置具有显著的优势，更重要的是更高的能效、更低的(甚至零)氧气消耗和更低的装置复杂性。结果表明，与基准案例相比，总体能效有了明显的提高。
This paper evaluates hydrogen and power co-generation based on direct coal chemical looping systems with total decarbonization of the fossil fuel. As an illustrative example, an iron-based chemical looping system was assessed in various plant configurations. The designs generate 300–450 MW net electricity with flexible hydrogen output in the range of 0–200 MWth(LHV). The capacity of evaluated plant concepts to have a flexible hydrogen output is an important aspect for integration in modern energy conversion systems. The carbon capture rate of evaluated concepts is almost total (>99%). The paper presents in details evaluated plant configurations, operational aspects as well as mass and energy integration issues. For comparison reason, a syngas-based chemical looping concept and Selexol®-based pre-combustion capture configuration were also presented. Direct coal chemical looping configuration has significant advantages compared with syngas-based looping systems as well as solvent-based carbon capture configurations, the more important being higher energy efficiency, lower (or even zero) oxygen consumption and lower plant complexity. The results showed a clear increase of overall energy efficiency in comparison to the benchmark cases.