Plantwide Control: A Review of Design Techniques, Benchmarks, and Challenges

Godoy, Rodrigo Juliani Correa de; Garcia, Cláudio

doi:10.1021/acs.iecr.7b00416

Cited by 14 publications

(5 citation statements)

References 98 publications

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“…The development of an appropriate PWC framework is essential for the accomplishment of the key goals outlined in the PWOC formulation. Based on the structural configuration, PWC architectures can be categorized into four primary groups: distributed, decentralized, single layer, and multilayer. The two-layer PWC configuration was employed to implement the sustainable PWOC approach, based on the proved stability of this structure to reject disturbances, fulfilling process, and trajectory restrictions by the nature of the (NMPC) . , Figure illustrates the two-layer optimization-based control structure employed to attain economic, control, environmental, and social goals from the perspective of a sustainable process water optimization and control (PWOC) system.…”

Section: Sustainable Plantwide Optimizing Controlmentioning

confidence: 99%

Sustainable Plantwide Optimizing Control for an Acrylic Acid Process

Duque,

Tusso-Pinzon,

Ochoa

2024

ACS Omega

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This paper presents a sustainable control strategy from a plantwide control (PWC) perspective. The proposed strategy is subjected to testing within an operational environment of an acrylic acid plant. To integrate sustainability tools into the plantwide optimizing control (PWOC) formulation, the present proposal suggests the utilization of green chemistry principles. These principles will be incorporated as constraints within the optimization problem. A comparative analysis is conducted between the proposed sustainable PWOC approach and two alternative structures: a PWOC framework that does not take sustainability issues into account and a conventional PWC structure. The findings indicate that the sustainable PWOC demonstrates superior economic performance from a financial standpoint, reaching the highest cumulative profitability(1.6274 × 10 5 USD), exceeding 11.94% in comparison to the PWOC without sustainability concerns, which reach a cumulative profitability of 1.4330 × 10 5 USD, and surpassing 13.01% when compared to the decentralized PWC approach, which reach a cumulative profitability of 1.4158 × 10 5 USD. Additionally, the sustainable PWOC demonstrated a reduced emission impact on the process, with a decrease of 6.17% compared to the unsustainable PWOC and a 9.79% decrease compared to the decentralized approach. This demonstrates that the incorporation of the proposed green chemistry metrics as an explicit component of the formulated PWC problem significantly mitigates the impacts of global warming and human health.

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Section: Sustainable Plantwide Optimizing Controlmentioning

confidence: 99%

Sustainable Plantwide Optimizing Control for an Acrylic Acid Process

Duque,

Tusso-Pinzon,

Ochoa

2024

ACS Omega

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“…In recent years, the chemical industry has explored the design of chemical plants with recycling streams, since using a small reactor and a recycling stream is typically a more economical solution for improving the overall conversion of reactants than using a large reactor for the same task 1,2 . Recycling systems can prevent the waste of useful materials and can reduce both energy usage and cost.…”

Section: Introductionmentioning

confidence: 99%

“…A recent review of plantwide control 2 found that few control techniques are available for recycling systems, although the literature does contain some approaches that have been introduced for these types of recycling systems. A recycling compensation scheme was proposed by Taiwo, 13,14 but this should be implemented only if the dynamics of the recycling path is known with a high degree of confidence, since any mismatch in the plant model can affect the stability of the closed loop system.…”

Section: Introductionmentioning

confidence: 99%

Design of delayed PID‐type controllers for high‐order recycling systems with time delays using model reduction

Guerra

Rubio

Muro-Cuéllar

2021

Asia-Pacific J Chem Eng

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In even the simplest recycling system with a first‐order plus dead time model for the direct and recycling paths, the characteristic equation for the open‐loop transfer function contains an infinite number of poles. This is due to the presence of time delays in the internal dynamics. The task of designing a controller is therefore challenging from the perspective of control. This paper considers the problem of stabilising a high‐order delayed recycling system (with a possible unstable direct path) through the use of a reduced model in conjunction with a new PID (proportional‐integral‐derivative)‐type delayed controller. We state the condition under which the stability of the closed‐loop system is guaranteed and determine the sets of stabilising control parameters. The performance of our proposed strategy is illustrated using several numerical simulations of industrial processes, including an industrial quench column, two continuous stirred tank reactor systems with recycling and a reactor–separator process.

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“…Many PWC methodologies have been published during the last decades . In Rangaiah and Kariwala a basic classification is proposed according to two main groups.…”

Section: Introductionmentioning

confidence: 99%

“…1 Many PWC methodologies have been published during the last decades. 2 In Rangaiah and Kariwala 3 a basic classification is proposed according to two main groups. On the one hand, PWC methods can be distinguished taking into account an approach-based criteria, where heuristics, mathematical, optimization, or hybrid methods can be discriminated (see Rangaiah and Kariwala 3 for a complete survey).…”

Section: Introductionmentioning

confidence: 99%

Plantwide Control Design Based on the Control Allocation Approach

Luppi

Braccia

Rullo

et al. 2017

Ind. Eng. Chem. Res.

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In this work the control allocation (CA) philosophy is considered in order to propose a plantwide control (PWC) design methodology. For medium/large-scale processes where the number of actuators is greater than the number of controlled variables, a CA-based strategy can be used to distribute the total control effort among the actuators, with some attractive features. First, the CA module can explicitly handle (i) constraints on inputs (typically actuator position and rate limits), and (ii) additional control objectives (e.g. to penalize the actuators control energy). Second, CA has the potential to provide (actuator) fault tolerance without considering a control structure reconfiguration. In this paper, a decentralized control structure is proposed for computing the total control effort, which is implemented with conventional single-input

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Plantwide Control: A Review of Design Techniques, Benchmarks, and Challenges

Cited by 14 publications

References 98 publications

Sustainable Plantwide Optimizing Control for an Acrylic Acid Process

Sustainable Plantwide Optimizing Control for an Acrylic Acid Process

Design of delayed PID‐type controllers for high‐order recycling systems with time delays using model reduction

Plantwide Control Design Based on the Control Allocation Approach

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