Comparison of Designs of Hydrogen Isotope Separation Columns by Numerical Modeling
Journal Article
·
· Industrial and Engineering Chemistry Research
- Sandia National Lab. (SNL-CA), Livermore, CA (United States)
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. Here, 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.
- Research Organization:
- Sandia National Laboratories (SNL-CA), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- NA0003525
- OSTI ID:
- 2311625
- Alternate ID(s):
- OSTI ID: 2432271
- Report Number(s):
- SAND--2023-01237J; SAND--2023-01256J
- Journal Information:
- Industrial and Engineering Chemistry Research, Journal Name: Industrial and Engineering Chemistry Research Journal Issue: 8 Vol. 62; ISSN 0888-5885
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Benchmarking Hydrogen Isotope Separation Efficiency of Pd/k–Packed TCAP Columns
Modelling aging effects on a thermal cycling absorption process column
Journal Article
·
Mon Jun 05 20:00:00 EDT 2023
· Fusion Science and Technology
·
OSTI ID:1915270
Modelling aging effects on a thermal cycling absorption process column
Journal Article
·
Tue Jul 15 00:00:00 EDT 2008
· Fusion Science and Technology
·
OSTI ID:22109384