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http://dx.doi.org/10.9713/kcer.2014.52.5.574

Nonlinear Modeling and Application of PI Control on Pre-cooling Session of a Carbon Dioxide Storage Tank at Normal Temperature and Pressure  

Lim, Yu Kyung (School of Chemical & Biological Engineering, Seoul National University)
Lee, Seok Goo (School of Chemical & Biological Engineering, Seoul National University)
Dan, Seungkyu (School of Chemical & Biological Engineering, Seoul National University)
Ko, Min Su (Samsung Heavy Industries)
Lee, Jong Min (School of Chemical & Biological Engineering, Seoul National University)
Publication Information
Korean Chemical Engineering Research / v.52, no.5, 2014 , pp. 574-580 More about this Journal
Abstract
Storage tanks of Carbon dioxide ($CO_2$) carriers utilized for the purpose of carbon capture and storage (CCS) into subsea strata have to undergo a pre-cooling session before beginning to load cryogenic liquid cargos in order to prevent physical and thermal deterioration of tanks which may result from cryogenic $CO_2$ contacting tank walls directly. In this study we propose dynamic model to calculate the tank inflow of $CO_2$ gas injected for precooling process and its dynamic simulation results under proportional-integral control algorithm. We selected two cases in which each of them had one controlled variable (CV) as either the tank pressure or the tank temperature and discussed the results of that decision-making on the pre-cooling process. As a result we demonstrated that the controlling instability arising from nonlinearity and singularity of the mathematical model could be avoided by choosing tank pressure as CV instead of tank temperature.
Keywords
CCS; $CO_2$ Carrier; $CO_2$ Storage Tank; Pre-cooling;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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