Zeolite Heat Storage: Key Parameters from Experimental Results with Binder‐Free NaY

Rönsch, Stefan; Auer, Bernhard; Kinateder, Matthias; Gleichmann, Kristin

doi:10.1002/ceat.202000342

Cited by 15 publications

(7 citation statements)

References 7 publications

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“…No gas was formed with contact with the powder. Zeolites can produce heat when becoming hydrated [7] which may have been the case for the zeolite powder and may have contributed to the reaction observed for the pellets. This preliminary test with zeolite powder did not set for over three weeks with the mixture easily flowing inside the centrifuge tube.…”

Section: Static Testsmentioning

confidence: 97%

SRPPF Aqueous Recovery System Sorbent Testing

JOLIN¹

2022

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This study details preliminary testing of 7 inorganic sorbents for the solidification of the surrogate SRPPF aqueous recovery system liquid excess material of 4M sodium nitrate. Sorbents were subject to various mixing methods to incorporate sodium nitrate solution including static, rotating, and in situ paddle mixing. Paddle mixing was found to be the most effective mixing technique, while simple static tests were also successful, though only for some of the sorbents. Setting tests were performed to ensure that the sorbent sequestered the liquid without release through a conical paint filter. Recommended set times ranged from near immediate to 7 days. The set mixtures were investigated further using ultra-centrifugal liquid release testing, thermogravimetric analysis, and visual microscopy to understand the mechanism by which the sorbent sequestered the liquid. Most sorbents seem to incorporate liquid by sorbing it onto and into the sorbent particles, while Drierite ® , anhydrous calcium sulfate, created a crystal structure that bound the surrogate liquid. Overall, four sorbents are recommended for continued testing: Aquaset II, Aquaset IIG, Drierite ® , and Spill-X-A.

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Section: Static Testsmentioning

confidence: 97%

SRPPF Aqueous Recovery System Sorbent Testing

JOLIN¹

2022

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“…Apart from minor changes, the plant was described in detail in previous publications, cf. [10,13]. The core of the plant is a glass vessel filled with a zeolite bulk to realize adsorption and desorption.…”

Section: Laboratory Plantmentioning

confidence: 99%

“…Characteristics of powder, binder-containing beads, and binderless beads of zeolite type NaY (adapted from[10]). …”

mentioning

confidence: 99%

Modeling and Simulation of a Zeolite Heat Storage with Binderless Zeolites

2023

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Zeolite heat storages are one measure to contribute to the German Climate Change Act and reduce greenhouse gas emissions in the heating sector. However, due to the challenging process engineering, those storages did not reach a commercial breakthrough yet. To overcome this obstacle, intensive process simulation work is required. Thereby, the simulation models have to pay attention to recent innovations regarding the zeolite synthesis. One of those innovations is the preparation of binderless zeolites. Behind this background, it was achieved by the present work to develop and validate a simulation model for zeolite‐based heat storage processes using binderless zeolites of type NaY.

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“…To investigate the aging of the zeolites, they were tested in a laboratory plant, which was used previously to study the sorption behavior and pressure drop in the zeolite bed [16]. The development of the laboratory unit was supported by the use of a simulation model [17].…”

Section: Experimental Settingmentioning

confidence: 99%

Rapid Aging of Binder‐Free Zeolite NaY Beads in Thermal Energy Storage Applications

Auer

Rönsch

2022

Chem Eng & Technol

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Zeolites can be used to store thermal energy, but they may age and lose a fraction of their storage capacity during prolonged use. The purpose of this study is to determine which parameters are responsible for the aging of the zeolite NaY by exposing it to extreme hydrothermal conditions. In a laboratory unit, a fixed bed of binder‐free zeolite NaY beads was treated hydrothermally, and the beads were analyzed for signs of aging. Also, a fixed bed of binder‐free zeolite 13X beads was tested for comparison. The results indicate that the two zeolite types age differently, depending on temperature and time of exposure.

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Zeolite Heat Storage: Key Parameters from Experimental Results with Binder‐Free NaY

Cited by 15 publications

References 7 publications

SRPPF Aqueous Recovery System Sorbent Testing

SRPPF Aqueous Recovery System Sorbent Testing

Modeling and Simulation of a Zeolite Heat Storage with Binderless Zeolites

Rapid Aging of Binder‐Free Zeolite NaY Beads in Thermal Energy Storage Applications

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