Abstract Biomass-based integrated gasification combined cycle (BIGCC) is a power generation technology to convert biomass fuel to electricity. In view of biomass gasification characteristic, chemical looping gasification (CLG) is an innovative biomass utilization technology. Due to the presence of metal oxygen carrier materials in CLG process, syngas yield can be increased and tar catalytic cracking is occurred. In this paper, a new system integrating BIGCC with CLG is designed for power generation and the simulation of the whole process, including biomass gasification, gas cleaning, heat recovery steam generator (HRSG) and gas/steam turbine, are carried out with Aspen Plus software. At first, in order to ensure the model accuracy, the experiments in a 25 kWth reactor of interconnected fluidized beds are conducted and the experiment results are compared with the simulated results from the designed model. It is verified that the designed biomass gasification model, especially kinetic model and equilibrium model, is accurate with the change of gasification temperature and steam-to-biomass (S/B) ratio, which enhances the reliability of the whole CLG-BIGCC system. The CLG-BIGCC system exhibits a better plant performance, where power efficiency is higher than the ones in the existing BIGCC demonstration plants. The sensitivity analysis on the CLG-BIGCC system is also discussed. Results indicate that optimal gasification temperature is 860 °C and most suitable S/B ratio was 1.0. Besides, five optimization schemes about CLG-BIGCC with nitrogen reinjection are proposed and investigated.

中文翻译：

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系统模拟和实验验证：基于生物质的集成气化联合循环（BIGCC）与化学循环气化（CLG）耦合发电

摘要 基于生物质的综合气化联合循环（BIGCC）是一种将生物质燃料转化为电能的发电技术。针对生物质气化的特点，化学循环气化（CLG）是一种创新的生物质利用技术。由于CLG工艺中金属氧载体材料的存在，可以提高合成气收率并发生焦油催化裂化。在本文中，设计了一个集成 BIGCC 和 CLG 的新系统用于发电，并使用 Aspen Plus 对包括生物质气化、气体净化、热回收蒸汽发生器 (HRSG) 和燃气/蒸汽轮机在内的整个过程进行了模拟。软件。首先，为了保证模型的准确性，在 25 kWth 的互连流化床反应器中进行了实验，并将实验结果与设计模型的模拟结果进行了比较。验证了所设计的生物质气化模型，尤其是动力学模型和平衡模型，随着气化温度和蒸汽生物质（S/B）比的变化而准确，提高了整个CLG-BIGCC系统的可靠性。CLG-BIGCC 系统表现出更好的电厂性能，其功率效率高于现有 BIGCC 示范电厂。还讨论了 CLG-BIGCC 系统的敏感性分析。结果表明，最佳气化温度为 860 °C，最合适的 S/B 比为 1.0。除了，