Hakodate Conv. of JPI (51st Petroleum-Petrochemical Symposium of JPI)

Presentation information

Poster presentatioin

[Poster] Poster presentatioin

For poster presentations with (On-line presentation) indicated after the program number, QA will be conducted online even during the face-to-face QA session.

[P21] Low-concentration CO2 capture using solid-liquid phase change of amine solution

○Kazushi Amamoto1, Soichi Kikkawa1,2,3, Yu Fujiki1, Jun Hirayama1,2, Gen Kato4, Hiroki Miura2,3,4, Tetsuya Shishido2,3,4, Seiji Yamazoe1,2,3,5 (1. Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 2. Elements Strategy Initiative for Catalysts & Batteries, Kyoto University, 3. Research Center for Hydrogen Energy-based Society, Tokyo Metropolitan University, 4. Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 5. Precursory Research for Embryonic Science and Technology, Japan Science and Technology Agency)

アミン溶液の固液相変化を利用して、高効率で低濃度CO2を吸収・放出するシステムを構築した。アミン溶液に400ppmのCO2を流し、下流の赤外分光光度計によりCO2除去効率を評価した。その結果、従来型のモノエタノールアミン溶液を大幅に上回って90%以上のCO2除去率を維持した。また、本アミン溶液はCO2の吸収に伴い白色のカルバミン酸固体を生成した。CO2の放出については、60℃において吸収したCO2とほぼ等量のCO2を放出し、最大で2%の濃縮CO2が得られた。

Keywords:Direct air capture, amine, phase change