Real-Time Application of pH Control in a Carbon Dioxide Bubble Column Reactor by Input/Output Linearizing Control Coupled with pH Target Optimizer,Industrial & Engineering Chemistry Research

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Real-Time Application of pH Control in a Carbon Dioxide Bubble Column Reactor by Input/Output Linearizing Control Coupled with pH Target Optimizer
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-08-16 , DOI: 10.1021/acs.iecr.8b02068
Chanin Panjapornpon _{1,

2} , Pawat Saksomboon _{1,

2} , Tanawadee Dechakupt ₃

Affiliation

A new strategy for the control application to enhance the CO₂ absorption efficiency of the bench-scale bubble column reactor by combining the pH target optimizer with an I/O linearizing controller is presented. A lumped parameter approach using two-film theory is introduced to develop the reactor model. The target pH set point is obtained by solving an optimization problem to maximize the absorption efficiency based on the steady state reactor model, while the I/O linearizing controller enforces the pH to track the target. Real-time control performance of the proposed method with a bench-scale bubble column reactor is investigated. The experimental results show that the I/O linearizing controller successfully enforces the reactor pH with less fluctuation in control action compared with a PI controller. The pH target optimizer provides the optimal use of the sodium hydroxide flow to enhance the CO₂ removal efficiency in the reactor.

中文翻译：

通过输入/输出线性化控制和pH目标优化器相结合，实时控制pH值在二氧化碳鼓泡塔反应器中的应用

控制应用中提高CO _2的新策略提出了通过将pH目标优化器与I / O线性化控制器结合使用的台式规模鼓泡塔反应器的吸收效率。引入了使用两层膜理论的集总参数方法来开发反应堆模型。通过基于稳态反应器模型解决优化问题以使吸收效率最大化来获得目标pH设定点，而I / O线性化控制器强制pH值跟踪目标。研究了台式台式鼓泡塔反应器所提方法的实时控制性能。实验结果表明，与PI控制器相比，I / O线性化控制器成功地增强了反应器的pH值，并且控制动作的波动较小。pH目标优化器可优化利用氢氧化钠流量来提高CO₂反应器中的去除效率。

更新日期：2018-11-29

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