TCAP Hydrogen Isotope Separation Process Under Development at ICSI Rm. Valcea

Ana, George; Niculescu, Alina; Bornea, Anisia; Zamfirache, Marius; Draghia, Mirela

doi:10.1109/tps.2018.2796627

Cited by 7 publications

(4 citation statements)

References 6 publications

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“…In a preliminary work, a TCAP unit was studied in the frame of the hydrogen isotopic separation process under development at the ICSI (Institute for Cryogenic and Isotopic Technologies, Rm. Valcea, Romania) with the aim of recovering tritium from tritiated water [45]. This process uses a system based on the catalytic isotopic exchange between tritiated water and hydrogen/deuterium followed by a cryogenic distillation (CD) cascade consisting of four distillation columns [45].…”

Section: Thermal Cycling Absorption Processmentioning

confidence: 99%

“…Valcea, Romania) with the aim of recovering tritium from tritiated water [45]. This process uses a system based on the catalytic isotopic exchange between tritiated water and hydrogen/deuterium followed by a cryogenic distillation (CD) cascade consisting of four distillation columns [45]. In this work, the TCAP unit complements the CD cascade in order to reduce its tritium holdup.…”

Section: Thermal Cycling Absorption Processmentioning

confidence: 99%

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Gas Chromatography and Thermal Cycling Absorption Techniques for Hydrogen Isotopes Separation in Water Detritiation Systems

Tosti

2023

Hydrogen

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This work introduces state-of-the-art water detritiation processes and discusses the main technologies and materials adopted. Focus is given to the gas chromatography (GC) and the thermal cycling absorption process (TCAP), which are studied as potential back-end technologies for tritium recovery through a water detritiation system designed for a small-scale unit. GC and the TCAP are evaluated critically in order to establish their applicability for the final purification of the DT stream recovered at the bottom of the cryo-distillation column of a water detritiation unit. Both solutions (GC and the TCAP with an inverse column) exhibit safe and feasible operation modes and are characterised by a good technological level; furthermore, both of these processes meet the main design specifications required by the proposed application. However, the use of GC is preferred, since this system can operate with modest temperature cycling and producing streams (D2 and T2) of better purity.

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Section: Thermal Cycling Absorption Processmentioning

confidence: 99%

Section: Thermal Cycling Absorption Processmentioning

confidence: 99%

Gas Chromatography and Thermal Cycling Absorption Techniques for Hydrogen Isotopes Separation in Water Detritiation Systems

Tosti

2023

Hydrogen

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“…An early quantitative model of TCAP used a Laplace transform approach . A more recent quantitative model analyzes stages that are each associated with a calculated separation factor derived from thermodynamic information . In another approach, Ducret et al solved differential equations for mass and heat transport and used empirical fits of Pd absorption isotherms for each isotope. , A version applied to a different experimental system has been reported by Zhou et al more recently …”

Section: Introductionmentioning

confidence: 99%

Comparison of Designs of Hydrogen Isotope Separation Columns by Numerical Modeling

Robinson

Salloum

2023

Ind. Eng. Chem. Res.

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Mixtures of gas-phase hydrogen isotopologues (diatomic combinations of protium, deuterium, and tritium) can be separated using columns containing a solid such as palladium that reversibly absorbs hydrogen. A temperature-swing process can transport hydrogen into or out of a column by inducing temperature-dependent absorption or desorption reactions. We consider two designs: a thermal cycling absorption process, which moves hydrogen back and forth between two columns, and a simulated moving bed (SMB), where columns are in a circular arrangement. We present a numerical mass and heat transport model of absorption columns for hydrogen isotope separation. It includes a detailed treatment of the absorption−desorption reaction for palladium. By comparing the isotope concentrations within the columns as a function of position and time, we observe that SMB can lead to sharper separations for a given number of thermal cycles by avoiding the remixing of isotopes.

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“…The 18 O isotope is treated in many scientific articles by presenting its direct applications [9,[25][26][27]. In previous papers [28][29][30][31][32], some solutions for modeling and controlling the separation process for the 18 O isotope production are presented. By analyzing these solutions, in most of the cases, some simplified linearized models with lumped parameters are proposed for the processes associated to the separation columns, which operate independently (they are not included in the separation cascades).…”

Section: Introductionmentioning

confidence: 99%

AI versus Classic Methods in Modelling Isotopic Separation Processes: Efficiency Comparison

et al. 2021

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In the paper, the comparison between the efficiency of using artificial intelligence methods and the efficiency of using classical methods in modelling the industrial processes is made, considering as a case study the separation process of the 18O isotope. Firstly, the behavior of the considered isotopic separation process is learned using neural networks. The comparison between the efficiency of these methods is highlighted by the simulations of the process model, using the mentioned modelling techniques. In this context, the final part of the paper presents the proposed model being simulated in different scenarios that can occur in practice, thus resulting in some interesting interpretations and conclusions. The paper proves the feasibility of using artificial intelligence methods for industrial processes modeling; the obtained models being intended for use in designing automatic control systems.

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TCAP Hydrogen Isotope Separation Process Under Development at ICSI Rm. Valcea

Cited by 7 publications

References 6 publications

Gas Chromatography and Thermal Cycling Absorption Techniques for Hydrogen Isotopes Separation in Water Detritiation Systems

Gas Chromatography and Thermal Cycling Absorption Techniques for Hydrogen Isotopes Separation in Water Detritiation Systems

Comparison of Designs of Hydrogen Isotope Separation Columns by Numerical Modeling

AI versus Classic Methods in Modelling Isotopic Separation Processes: Efficiency Comparison

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