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Title: Multi-Column Xe/Kr Separation with AgZ-PAN and HZ-PAN

Abstract

Previous multi-column xenon/krypton separation tests have demonstrated the capability of separating xenon from krypton in a mixed gas feed stream. The results of this initial testing with AgZ-PAN and HZ-PAN indicated that an excellent separation of xenon from krypton could be achieved. Building upon these initial results, a series of additional multi-column testing were performed in FY-16. The purpose of this testing was to scale up the sorbent beds, test a different composition of feed gas and attempt to improve the accuracy of the analysis of the individual capture columns’ compositions. Two Stirling coolers were installed in series to perform this testing. The use of the coolers instead of the cryostat provided two desired improvements, 1) removal of the large dilution due to the internal volume of the cryostat adsorption chamber, and 2) ability to increase the sorbent bed size for scale-up. The AgZ-PAN sorbent, due to its xenon selectivity, was loaded in the first column to capture the xenon while allowing the krypton to flow through and be routed to a second column containing the HZ-PAN for capture and analysis. The gases captured on both columns were sampled with evacuated sample bombs and subsequently analyzed via GC-MS for bothmore » krypton and xenon. The results of these tests can be used to develop the scope of future testing and analysis using this test bed for demonstrating the capture and separation of xenon and krypton using sorbents, for demonstrating desorption and regeneration of the sorbents, and for determining compositions of the desorbed gases. They indicate a need for future desorption studies in order to better quantify co-adsorbed species and final krypton purity.« less

Authors:
 [1];  [1];  [1];  [1]
  1. Idaho National Lab. (INL), Idaho Falls, ID (United States)
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE)
OSTI Identifier:
1364482
Report Number(s):
INL/EXT-16-39618
TRN: US1703335
DOE Contract Number:
AC07-05ID14517
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; KRYPTON; XENON; CRYOSTATS; CAPTURE; DESORPTION; Krypton; offgas; physisorption; xenon

Citation Formats

Greenhalgh, Mitchell Randy, Garn, Troy Gerry, Welty, Amy Keil, and Watson, Tony Leroy. Multi-Column Xe/Kr Separation with AgZ-PAN and HZ-PAN. United States: N. p., 2016. Web. doi:10.2172/1364482.
Greenhalgh, Mitchell Randy, Garn, Troy Gerry, Welty, Amy Keil, & Watson, Tony Leroy. Multi-Column Xe/Kr Separation with AgZ-PAN and HZ-PAN. United States. doi:10.2172/1364482.
Greenhalgh, Mitchell Randy, Garn, Troy Gerry, Welty, Amy Keil, and Watson, Tony Leroy. Mon . "Multi-Column Xe/Kr Separation with AgZ-PAN and HZ-PAN". United States. doi:10.2172/1364482. https://www.osti.gov/servlets/purl/1364482.
@article{osti_1364482,
title = {Multi-Column Xe/Kr Separation with AgZ-PAN and HZ-PAN},
author = {Greenhalgh, Mitchell Randy and Garn, Troy Gerry and Welty, Amy Keil and Watson, Tony Leroy},
abstractNote = {Previous multi-column xenon/krypton separation tests have demonstrated the capability of separating xenon from krypton in a mixed gas feed stream. The results of this initial testing with AgZ-PAN and HZ-PAN indicated that an excellent separation of xenon from krypton could be achieved. Building upon these initial results, a series of additional multi-column testing were performed in FY-16. The purpose of this testing was to scale up the sorbent beds, test a different composition of feed gas and attempt to improve the accuracy of the analysis of the individual capture columns’ compositions. Two Stirling coolers were installed in series to perform this testing. The use of the coolers instead of the cryostat provided two desired improvements, 1) removal of the large dilution due to the internal volume of the cryostat adsorption chamber, and 2) ability to increase the sorbent bed size for scale-up. The AgZ-PAN sorbent, due to its xenon selectivity, was loaded in the first column to capture the xenon while allowing the krypton to flow through and be routed to a second column containing the HZ-PAN for capture and analysis. The gases captured on both columns were sampled with evacuated sample bombs and subsequently analyzed via GC-MS for both krypton and xenon. The results of these tests can be used to develop the scope of future testing and analysis using this test bed for demonstrating the capture and separation of xenon and krypton using sorbents, for demonstrating desorption and regeneration of the sorbents, and for determining compositions of the desorbed gases. They indicate a need for future desorption studies in order to better quantify co-adsorbed species and final krypton purity.},
doi = {10.2172/1364482},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Aug 01 00:00:00 EDT 2016},
month = {Mon Aug 01 00:00:00 EDT 2016}
}

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