Transient analysis of true/simulated moving bed reactors: A case study on the synthesis of n-Propyl propionate

Santana, Vinícius V.; Martins, Márcio A. F.; Rodrigues, Alírio E.; Loureiro, José M.; Ribeiro, Ana M.; Nogueira, Idelfonso B. R.

doi:10.1016/j.compchemeng.2020.106820

Cited by 7 publications

(11 citation statements)

References 22 publications

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“…Even with the abnormal behavior of Q IV , the performance offset practically vanished. The importance of u s compared to Q IV in cyclic adsorptive units and the simulated moving-bed reactor were reported in Santana et al, 17 which is in agreement with the results obtained here. The complex physics of the system was captured by making exclusive use of the process data.…”

Section: ■ Resultssupporting

confidence: 92%

“…This method was applied in dynamic behavior analysis of separation units, 18 and in the choice of manipulating variables in a predictive control scheme separation and reaction units. 17 Even though the method demonstrated potential, it was limited to the availability of a model and an offline scenario, and thus, it was not possible to be employed on a more wieldy approach. Its simplicity and efficiency to distinguish operating variables' importance on measured outputs enforce its potential application as a Big Data analytical tool in systems from a wide range of complexity.…”

Section: ■ Introductionmentioning

confidence: 99%

“…The works show that any chemical process or plant can benefit from the algorithm by collecting and processing input and output process data similarly. This method was applied in dynamic behavior analysis of separation units, and in the choice of manipulating variables in a predictive control scheme separation and reaction units . Even though the method demonstrated potential, it was limited to the availability of a model and an offline scenario, and thus, it was not possible to be employed on a more wieldy approach.…”

Section: Introductionmentioning

confidence: 99%

“…However, traditional resource-intensive production routes are still the main choice due to the lack of better options. In this sense, the SMBR process is a potentially better solution as a continuous multifunctional reactor with low demand for energy that can be competitive with its conventional process counterpart, especially in equilibrium-limited reactions. ,− …”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Abnormal Operation Tracking through Big-Data-Based Gram–Schmidt Orthogonalization: Production of n-Propyl Propionate in a Simulated Moving-Bed Reactor: A Case Study

Santana

Martins

Rodrigues

et al. 2021

Ind. Eng. Chem. Res.

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Big Data Analytics plays a crucial role in Industry 4.0 by offering tools to improve the decision-making process. These tools comprise data management infrastructures and analytical methods. Among the economic sectors, the chemical process industry already holds mature data management structures but poorly explored analytical tools. In this sense, this work proposes an online analytical tool that can deal with Big Data to be used for identifying abnormal operations in chemical processes. It deals with a modified dynamic sensitivity matrix (DSM) and Gram−Schmidt orthogonalization (GSO) to prioritize process variables under abnormal behavior and scaling the impact they have on plant performance. In order to evaluate the effectiveness of the proposed method, the synthesis of n-propyl-propionate in a challenging simulated moving-bed reactor (SMBR) process is the object of this study. Simulations are carried out within a software-in-the-loop mode through the integration between Matlab and gPROMs. The results show that the proposed algorithm correctly prioritized the variables concerning their impact on the process performance during abnormal behavior. The capabilities of the proposed method were tested in two campaigns: considering abnormalities in two and three operating variables, respectively. In both, the method correctly prioritized their correction order based on their impact on the process performance. Finally, a "what-if" scenario shows that choosing the correction order at random leads to abnormal behavior for longer periods of time.

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Section: ■ Resultssupporting

confidence: 92%

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Abnormal Operation Tracking through Big-Data-Based Gram–Schmidt Orthogonalization: Production of n-Propyl Propionate in a Simulated Moving-Bed Reactor: A Case Study

Santana

Martins

Rodrigues

et al. 2021

Ind. Eng. Chem. Res.

Self Cite

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“…Simulated Moving Bed Reactor (SMBR) stands out among multifunctional units due to its efficiency in dealing with equilibriumlimited reactions. It has the capability of removing products from the reaction zone through selective adsorption onto porous catalyst, shifting the equilibrium toward products and, thus, increasing the yield [2][3][4][5]. Periodic switches change inlet (eluent and feed) and outlet (raffinate and extract) streams in a multicolumn system divided into four sections filled in with an adsorptive porous catalyst.…”

Section: Introductionmentioning

confidence: 99%

A Complete Heterogeneous Model for the Production of n-Propyl Propionate Using a Simulated Moving Bed Reactor

et al. 2022

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n-Propyl Propionate (ProPro) is a harmless biodegradable product employed in several fields for the production of drugs, inks, coating, food, and perfume. ProPro is synthesized in an equilibrium reaction for which its yield can be enhanced by constant withdraw of the products as the reaction takes place. Simulated Moving Bed Reactor (SMBR) is a candidate for the production of ProPro with high efficiency as it is a multifunction unit able to simultaneously run reaction and separation, hence shifting the equilibrium reaction toward products. This paper proposes a complete phenomenological model for the ProPro synthesis in a Simulated Moving Bed Reactor (SMBR) packed with the heterogeneous catalyst Amberlyst 46 resin. The operating conditions are defined by the Triangle Theory to design an SMBR unit to produce ProPro efficiently and a comprehensive parameter estimation procedure is employed to obtain more representative parameters. The validated phenomenological model was applied to design an SMBR unit to produce high purity (99.28%) ProPro.

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An integrated approach for parameter estimation of a propyl propionate synthesis model

Prudente,

Santos,

Ribeiro

et al. 2024

Chemical Engineering Research and Design

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Transient analysis of true/simulated moving bed reactors: A case study on the synthesis of n-Propyl propionate

Cited by 7 publications

References 22 publications

Abnormal Operation Tracking through Big-Data-Based Gram–Schmidt Orthogonalization: Production of n-Propyl Propionate in a Simulated Moving-Bed Reactor: A Case Study

Abnormal Operation Tracking through Big-Data-Based Gram–Schmidt Orthogonalization: Production of n-Propyl Propionate in a Simulated Moving-Bed Reactor: A Case Study

A Complete Heterogeneous Model for the Production of n-Propyl Propionate Using a Simulated Moving Bed Reactor

An integrated approach for parameter estimation of a propyl propionate synthesis model

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