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首页> 外文会议>Annual International Pittsburgh Coal Conference >Thermodynamic Analysis of Chemical Looping Gasification Coupled with Lignite PyrolysisNZhang Kun Doctoral candidate, Dalian University of Technology, Dalian, CHINAMzhangkunl025@aliyun.com
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Thermodynamic Analysis of Chemical Looping Gasification Coupled with Lignite PyrolysisNZhang Kun Doctoral candidate, Dalian University of Technology, Dalian, CHINAMzhangkunl025@aliyun.com

机译：热力学分析化学循环气化与褐煤皮塞康坤透博士，大连理工大学，大连，中国 Zhangkunl025@aliyun.com

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摘要

A poly-generation system integrating coal pyrolysis and chemical looping gasification (CLG) is proposed to realize the multi-generation of value-added chemicals, synthetic gas fuels and heat/electricity. In this system, the models including coal pyrolysis, coal drying, air reactor (AR) and fuel reactor (FR) are employed to simulate the coupled system using Aspen Plus software. Especially, the FR model is used to produce syngas, which is the main target product, on the basis of Gibbs free energy minimization approach. According to the thermodynamic data obtained from the simulation, chemical exergy and physical exergy are determined for process streams and thermal efficiency is discussed as well. The overall energy efficiency of the new system can achieve values of 43.12%, with the drying unit causing the highest energy destruction. The results indicate that the coupled system shows a better performance compared with its original individual processes in consideration of the thermodynamic efficiency and effects on the environment, though the additional mechanical energy consumption occurs in the new system. Moreover, being used as the gasification agent in the FR, phenol wastewater has been greatly reduced, which reduces levels of environmental pollution. Hence, this new system will be of great potential in industrial application due to its high energy utilization efficiency and low pollution.
机译：提出了一种聚合煤热解和化学环路气化（CLG）的多代系统，以实现多代增值化学品，合成气体燃料和热/电力。在该系统中，采用包括煤热解，煤干燥，空气反应器（AR）和燃料反应器（FR）的模型来模拟使用Aspen Plus软件的耦合系统。特别是，在GIBBS自由能量最小化方法的基础上，FR模型用于生产合成气，这是主要目标产品。根据从模拟中获得的热力学数据，确定用于处理流的化学漏洞和物理驱动，并且也讨论了热效率。新系统的整体能源效率可以达到43.12％的值，干燥单元导致最高的能量破坏。结果表明，耦合系统表现出更好的性能与其原始个体过程相比，考虑到对环境的热力学效率和对环境的影响，尽管在新系统中发生额外的机械能耗。此外，用作FR中的气化剂，苯酚废水大大降低，这减少了环境污染的水平。因此，由于其高能量利用效率和低污染，这种新系统将具有巨大的工业应用潜力。

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