Constructability study on a German reference IGCC power plant with and without CO2-capture for hard coal and lignite
Constructability study on a German reference IGCC power plant with and without CO2-capture for hard coal and lignite
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DOI：
10.1016/j.enconman.2010.03.011
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发表时间：
2010-11
影响因子：
10.4
通讯作者：
Martin Gräbner;Olaf von Morstein;D. Rappold;W. Günster;G. Beysel;B. Meyer
中科院分区：
文献类型：
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作者：
Martin Gräbner;Olaf von Morstein;D. Rappold;W. Günster;G. Beysel;B. Meyer
本文介绍了几个案例的技术设计，性能和经济评估的IGCC发电厂的概念，有和没有二氧化碳捕获和储存（CCS）的世界市场上的硬煤和德国褐煤。评估包括基于商业上可用的和有竞争力的最先进技术的IGCC概念。在概念预评估中，研究了热回收蒸汽发生的压力概念、空气分离装置的配置、气体调节替代方案和合成气冷却，并与气体冷却的全水淬方案进行了比较。对经济上最有利和最有效的情况进行了评价，确定了碳捕获率和工厂效率的目标值。这些要求导致在气化中应用HP/IP热回收系统、在联合循环中应用HP/IP/LP系统、70%空气集成、在具有CCS的情况下用于硬煤和褐煤的含硫CO变换以及在具有CCS的情况下用于硬煤的全水淬。捕集和非捕集情况之间的比较表明，在硬煤和褐煤的情况下，分别为89%和74%的潜在CO2避免。由于CCS的额外辅助消耗导致基于LHV的净效率从45.9%下降到34.9%（硬煤）和从51.5%下降到41.3%（褐煤）。在硬煤的情况下，增加碳捕获的电力成本增加了13.4%，在褐煤的情况下，分别增加了11.8%。对影响相对电价的各种因素进行了敏感性分析。
This paper describes several cases of technical design, performance and an economic evaluation for IGCC-power plant concepts with and without CO2capture and storage (CCS) operated on world market hard coal and German lignite. Evaluations include IGCC concepts based on commercially available and competitive state-of-the-art technologies. In concept pre-assessment pressure concepts for heat recovery steam generation, configuration of air separation unit, gas conditioning alternatives and synthesis gas cooling in comparison to full water quench options for gas cooling were investigated. The economically most beneficial and efficient cases were evaluated identifying target values for carbon capture rate and plant efficiency. These requirements lead to the application of a HP/IP heat recovery system in gasification, a HP/IP/LP system in combined cycle, 70% air integration, sour CO shift conversion for hard coal and lignite cases with CCS and a full water quench in case for hard coal with CCS. The comparison between capture and non-capture cases shows a potential CO2-avoidance of 89% in case of hard coal and 74% in case of lignite, respectively. The additional auxiliary consumption due to CCS leads to a decreasing net efficiencies based on LHV basis from 45.9% to 34.9% (hard coal) and from 51.5% to 41.3% (lignite). In case of hard coal the cost of electricity increases by 13.4% with the addition of carbon capture and in case of lignite by 11.8%, respectively. A sensitivity analysis for different factors affecting relative cost of electricity was carried out as well.