Steady-state analyses for reactive distillation control: An MTBE case study

Singh, B.; Singh, Ranjit; Kumar, M. V. Pavan; Kaistha, Nitin

doi:10.1016/j.jlp.2005.06.009

Cited by 19 publications

(10 citation statements)

References 19 publications

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“…These variables include the reflux ratio, reboiler duty, and feed flow, among others. On the other hand, the output variables can be also controlled or used to describe the process conditions, e.g., the stage temperatures and compositions (Singh et al, 2005b). In particular, the input multiplicity (IM) is relevant and important because of it imposes significant control and operation problems than those obtained for output multiplicity (Vaca et al, 2006;Kumar and Kaistha, 2008).…”

Section: Introductionmentioning

confidence: 99%

Analysis and prediction of input multiplicity for the reactive flash separation using reaction-invariant composition variables

Jaime-Leal

Bonilla-Petriciolet

Segovia‐Hernández

et al. 2012

Chemical Engineering Research and Design

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Section: Introductionmentioning

confidence: 99%

Analysis and prediction of input multiplicity for the reactive flash separation using reaction-invariant composition variables

Jaime-Leal

Bonilla-Petriciolet

Segovia‐Hernández

et al. 2012

Chemical Engineering Research and Design

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“…A "control structure" as defined by Singh et al (2005) refers to the number of control loops and the specific input-output pairing used in the loops. Potential input variables are the reflux rate, reflux ratio, reboiler duty, reboiler ratio, distillate rate, bottoms rate, and the fresh feeds.…”

Section: Control Structurementioning

confidence: 99%

Control of Reactive Distillation Column: A Review

Sharma¹,

Singh²

2010

International Journal of Chemical Reactor Engineering

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The objective of this paper is to give a critical survey of the present status within the field of control of a reactive distillation column. Control of a reactive distillation column is a challenging task due to process nonlinearity and complex interactions between the vapor-liquid equilibrium and chemical reactions. There are different types of control methodologies, which have been studied in the reactive distillation, ranging from a simple proportional-integral (PI) controller to advanced model predictive controllers (MPC) such as dynamic matrix control (DMC), quadratic dynamic matrix control (QDMC), robust multivariable predictive control technology (RMPCT), generalized predictive control (GPC), and other advanced control techniques. With the goals of optimal performance, energy conservation and cost effectiveness of process operations in industries, the design of optimal controllers and controller performance assessment have received great attention in both industries and academia. The main objective of control is to maintain the product purity within the desired range.

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“…As a typical process intensification technology, RD has gained significant attention recently. [1][2][3][4][5][6][7][8][9][10][11][12] It is typically operated in two modes: excess reactant feed (twocolumn process) and neat operation (single-column process). Luyben [13] quantitatively compared the steadystate economics and the dynamic controllability of two alternative RD systems, and the results show that the single-column process has better steady-state economics, while the two-column process exhibits adequate dynamic controllability.…”

Section: Introductionmentioning

confidence: 99%

Rigorous design and control of thermally integrated pressure‐swing reactive distillation process for isobutyl acetate production considering the effect of column pressures

Zhang

Liu

et al. 2020

Can J Chem Eng

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By studying the effect of pressure on relative volatility, azeotrope composition, and net reaction rate, a rigorous pressure-swing thermally integrated reactive distillation (PST-RD) process for isobutyl acetate synthesis is proposed. The steady-state and dynamic characteristics of the PST-RD process are evaluated based on Aspen and Aspen Dynamic. Steady-state optimization results show that the energy consumption and the total annual cost (TAC) reduced by 42.32% and 34.20% compared with the conventional two-column process, respectively. Subsequently, two control structures of the PST-RD process under a rigorous model are developed and evaluated by large disturbances in throughput and feed composition. Dynamic simulation results show that peak dynamic transients can be effectively reduced by adding a Q/F feedforward control structure. Furthermore, the effective heat integration of high-pressure (HP) and low-pressure (LP) columns can be realized by implementing composition/pressure cascade control when the capacity of the LP column increases.

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Steady-state analyses for reactive distillation control: An MTBE case study

Cited by 19 publications

References 19 publications

Analysis and prediction of input multiplicity for the reactive flash separation using reaction-invariant composition variables

Analysis and prediction of input multiplicity for the reactive flash separation using reaction-invariant composition variables

Control of Reactive Distillation Column: A Review

Rigorous design and control of thermally integrated pressure‐swing reactive distillation process for isobutyl acetate production considering the effect of column pressures

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