Yuan, Chen, Can, Deng, Jingyuan, Zhu, Bingyang, Du, Rui, Zhang, Ziyu, Li, Huimin, Liu
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引用次数: 0
Abstract
This paper studies the conversion of coal to energy vectors (power and SNG) through gasification simultaneously with a chemical looping process from a thermodynamic perspective. Water-gas shift with calcium looping CO2 absorption process is conducted as the substitute of traditional water-gas shift reaction (WGS) with amine sorbents. This novel technology includes six main parts: cryogenic air separation unit (CASU), coal gasification, the water-gas shift process with calcium looping for enhancement of CO2 absorption (WGS-CaL), methanation and heat recovery steam generation (HRSG). WGS-CaL is an efficient method for adjusting the ratio of CO and H2 as well as CO2 capturing. The simulation results are consistent with the industrial data. Moreover, the overall plant energy and economic performance are compared with traditional carbon capture technologies.
本文从热力学角度研究了煤炭通过气化与化学循环过程同时转化为能源载体（电力和合成天然气）的过程。水煤气变换与钙循环二氧化碳吸收工艺是以胺吸附剂替代传统的水煤气变换反应（WGS）。这项新技术包括六个主要部分：低温空分装置（CASU）、煤气化、水煤气变换工艺与钙循环以提高二氧化碳吸收率（WGS-CaL）、甲烷化和热回收蒸汽发生器（HRSG）。WGS-CaL 是调整 CO 和 H2 比例以及捕获 CO2 的有效方法。模拟结果与工业数据一致。此外，还将整个工厂的能源和经济效益与传统的碳捕集技术进行了比较。
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