淡江大學機構典藏:Item 987654321/116998
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    题名: Control of Solvent-Based Post-Combustion Carbon Capture Process with Optimal Operation Conditions
    作者: Yih-Hang Chen;Ming-Tien Shen;Hsuan Chang;Chii-Dong Ho
    关键词: post-combustion;solvent-based carbon capture;process control;rate-based model;Aspen Custom Modeler
    日期: 2019-06-12
    上传时间: 2019-09-17 12:11:03 (UTC+8)
    摘要: Solvent-based post-combustion carbon capture (PCC) is a mature and essential technology to solve the global warming problem. The high energy consuming issue and the flexible operation required by the power plants inquire about the development of effective control systems for PCC plants. This study proposes the optimal-based control approach that utilizes optimal set-point values for the quality controllers. The five optimal-based control schemes studied all employed L/G (liquid to gas ratio in absorber) as one quality control variable. Performance comparisons with a typical conventional control scheme are conducted employing a rate-based dynamic model for the MEA (monoethanolamine) solvent PCC process developed on a commercial process simulator. Compared to the typical control scheme, the optimal-based control schemes provide faster responses to the disturbance changes from the flue gas conditions and the set-point change of the CO2 capture efficiency, as well as better results in terms of IAEs (integral of absolute errors) of capture efficiency and reboiler heat duty during the stabilization period. LG-Tstr and LG-Tabs-Cascade are the best schemes. In addition to L/G, these two schemes employ the control of Tstr (the temperature of a stage of stripper) and a cascade control of Tabs (the temperature of a stage of absorber) (outer loop) and Tstr (inner loop), respectively.
    關聯: Processes 7(6), p.366-385
    DOI: 10.3390/pr7060366
    显示于类别:[化學工程與材料工程學系暨研究所] 期刊論文

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