文章基本信息

标题：CO 2 Subsea Separation: Concept & Control Strategies
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作者：André Felipe F. de Souza ; Argimiro R. Secchi ; Maurício B. de Souza 等
期刊名称：IFAC PapersOnLine
印刷版ISSN：2405-8963
出版年度：2019
卷号：52
期号：1
页码：790-795
DOI：10.1016/j.ifacol.2019.06.158
语种：English
出版社：Elsevier
摘要：AbstractThe high CO2content found in Pre-Salt offshore oil fields has led to cost-energetically processes for CO2removal and destination. In this paper, an innovative and promising alternative subsea separation process (SSP) was proposed. Since a CO2rich phase is expected at reservoir conditions, subsea gravity separators can be employed avoiding large volumes of CO2from being sent to the topside, lowering gas processing plant complexity. A differential-algebraic system of equations (DAE) was developed for the SSP modeling. Design and steady-state simulations were carried out within EMSO simulator. To ensure the process variables remain at their desirable values two control strategies, PID and Linear Model Predictive Control (MPC), were compared. The proposed process showed technical feasibility with up to 62% GOR reduction. The control strategies presented reasonable performance. MPC had for most of the controlled variables a better performance.
关键词：KeywordsPhase EquilibriumCarbon dioxideModel Predictive ControlSubsea SeparationPre-SaltPhenomenological Modeling