Influence of parameter uncertainty on modeling of industrial ammonia reactor for safety and operability analysis

Laššák, P.; Labovský, Juraj; Jelemenský, Ľudovít

doi:10.1016/j.jlp.2009.10.001

Cited by 14 publications

(8 citation statements)

References 33 publications

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“…1 The operational envelopes mentioned above for carrying out the ammonia synthesis reaction are quite general, and vary greatly. However, Haber-Bosch process plants have some constraints imposed due to design 30,31 and operation limitations, 32 which originate from requirements of autothermic operation of the reactor system, catalyst type, feed content and composition. Therefore, the operating envelope needs to be determined and customised with respect to the process plant.…”

Section: Haber-bosch Processmentioning

confidence: 99%

Operating envelope of Haber–Bosch process design for power-to-ammonia

2018

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Section: Haber-bosch Processmentioning

confidence: 99%

Operating envelope of Haber–Bosch process design for power-to-ammonia

2018

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“…The study of Laššák et al showed that parametric uncertainties cause different temperature profiles on the steady-state ammonia reactor model [44], leading to changes in the ammonia production or, worst-case, a shut down of the reactor.…”

Section: Introductionmentioning

confidence: 99%

How sensitive is a dynamic ammonia synthesis process? Global sensitivity analysis of a dynamic Haber-Bosch process (for flexible seasonal energy storage)

Verleysen

Parente

Contino

2021

Energy

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The transition towards a sustainable energy sector depends on how we safely manage the transport and storage of energy to keep up with the demand. Large storage (TWh) of renewable energy can be accomplished by producing an energy carrier like ammonia. This power-to-ammonia production process overly depends on the stability of the ammonia reactor where any variations induced by uncertainties could have a large impact on the performance during its dynamic operations. To determine the effect of these variations, we need to identify which of the uncertainties have to be scrutinized during model design. The current work carries out the development of a dynamic Haber-Bosch process, implementing uncertainties in the model and performing an uncertainty quantification analysis on the process. Subsequently, the sensitivity indices quantify the impact of these uncertainties on the design during ramp-up. The global sensitivity analysis indicated that the reactor inlet temperature has the most considerable impact on the performance during ramp-up, where the hydrogen/nitrogen ratio has the second most significant impact. We see that the uncertainty on the

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“…A nonlinear system control such as a chemical reactor presents a complex problem. The process parameters such as reaction rates, reaction rates constants and heat transfer coefficients induce system uncertainty [7], [8]. CSTRs due to their non linearity [9] ,multiple operating points and instability at various operating points [10] results in a complex problem of control.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Modern Control Techniques for Optimal Dynamic Nonlinear Process Control

Pervez¹,

Kamal

2020

2020 IEEE 23rd International Multitopic Conference (INMIC)

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This paper carries out to review a comparative analysis of modern control with conventional control in search towards an optimal control algorithm for a dynamic nonlinear process control system. Achieving global optimal behavior in closed loop control of a nonlinear system varying considerably in system dynamics over operating range is a challenging target. Improved versions of some of the most effective control algorithms from the modern control, that is Linear Quadratic Regulator (LQR) and Model Predictive Control (MPC), were designed and evaluated by comparison with conventional gain scheduled Proportional-Integral-Derivative (PID) control. The results showed that a new advanced version of MPC that is Switched Model Predictive Control (SMPC) is the most promising controller due to its advanced and benefited features in achieving global optimal dynamic nonlinear process control performance.

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Influence of parameter uncertainty on modeling of industrial ammonia reactor for safety and operability analysis

Cited by 14 publications

References 33 publications

Operating envelope of Haber–Bosch process design for power-to-ammonia

Operating envelope of Haber–Bosch process design for power-to-ammonia

How sensitive is a dynamic ammonia synthesis process? Global sensitivity analysis of a dynamic Haber-Bosch process (for flexible seasonal energy storage)

Comparative Study of Modern Control Techniques for Optimal Dynamic Nonlinear Process Control

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