Design of energy-saving carbon dioxide separation process using fluidized bed
Design of energy-saving carbon dioxide separation process using fluidized bed
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DOI：
10.1016/j.applthermaleng.2017.07.156
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发表时间：
2017-11
影响因子：
6.4
通讯作者：
Yasuki Kansha;M. Ishizuka;H. Mizuno;A. Tsutsumi
中科院分区：
文献类型：
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作者：
Yasuki Kansha;M. Ishizuka;H. Mizuno;A. Tsutsumi
二氧化碳捕获和储存技术最近因减少二氧化碳排放而受到关注；然而，为了促进其商业实施，其捕获成本应进一步降低。这项研究提出了一种利用循环流化床中固体化学吸收的创新节能工艺。在此过程中，伴随吸收的反应热成功地通过热泵提供，以在再生器中实现热分解，从而导致所有工艺热的再循环。进行吸收和流化实验以确定分离性能。使用商用过程模拟器的实验数据来模拟所提出过程的能量平衡。模拟结果表明，与传统方法相比，所提出的二氧化碳分离工艺具有巨大的节能潜力。
Carbon dioxide capture and storage technology has attracted recent attention for the mitigation of CO2emissions; however, to facilitate its commercial implementation, its capture cost should be further decreased. This research proposes an innovative energy-saving process using chemical absorption by a solid in a circulating fluidized bed. In this process, the reaction heat that accompanies absorption is successfully supplied through a heat pump to achieve thermal decomposition in a regenerator, thereby leading to recirculation of all process heat. Absorption and fluidization experiments were conducted to determine the separation performance. An energy balance of the proposed process was simulated using the experimental data with a commercial process simulator. The simulation results indicate that the proposed CO2separation process has large energy-saving potential when compared with conventional approaches.