Preparation of a Honeycomb Adsorbent Rotor for a Thermal Swing Continuous CO<sub>2</sub> Adsorber

Shimono Kanae, Inoue Koji, Okano Hiroshi, Matsukuma Yosuke, Kodama Akio

doi:10.1252/kakoronbunshu.42.15

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Other Title

CO<sub>2</sub>吸着用ハニカムロータの調製と回転式温度スイング吸脱着操作への適用
CO₂吸着用ハニカムロータの調製と回転式温度スイング吸脱着操作への適用
CO ₂ キュウチャクヨウハニカムロータノチョウセイトカイテンシキオンドスイングキュウダッチャクソウサエノテキヨウ

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Description

A thermal swing continuous CO₂ adsorber employing a honeycomb rotor was experimentally studied. First, CO₂ breakthrough curves and adsorption isotherms of various honeycomb cores binding a CO₂ adsorbent material were measured at 298 K and 453 K. It was confirmed that honeycomb cores binding 13X, Li-LSX, and Na-LSX type zeolite have relatively high adsorption capacities for CO₂. Honeycomb rotors binding with these zeolites were then prepared, and their CO₂ removal and recovery performance were evaluated in terms of CO₂ recovery concentration and recovery rate. Among the honeycomb rotors prepared and tested, the rotor containing a higher amount of 13X zeolite showed the maximum CO₂ capture performance under the 298–453 K temperature swing. This 13X zeolite rotor removed CO₂ from simulated flue gas containing 10% CO₂ with a concentration of 90% and a CO₂ recovery rate of 22%. In addition, at a CO₂ recovery concentration 80%, the CO₂ recovery rate improved to approximately 50%. It was also found that the CO₂ capture performance of honeycomb rotor improved with increasing difference in the CO₂ equilibrium adsorption amount between 298 K and 453 K, namely, the effective CO₂ adsorption amount Δq. Thus, it was confirmed that Δq was useful index of the CO₂ adsorbent selection for this type of CO₂ adsorber.

Journal

KAGAKU KOGAKU RONBUNSHU

KAGAKU KOGAKU RONBUNSHU 42 (1), 15-21, 2016

The Society of Chemical Engineers, Japan

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