A Radial Flow Contactor for Ambient Air CO2 Capture

Applied Sciences

Wim Brilman¹  Qian Yu² 

[1] Technology, University of Twente, 7500 AE Enschede, The Netherlands;;Sustainable Process Technology, Fac. Science &

关键词: co₂;    air capture;    adsorption;    supported amine sorbents;    radial flow reactor;   

DOI  :  10.3390/app10031080

来源: DOAJ

【 摘 要 】

Direct air capture (DAC) of CO₂ can address CO₂ emissions from distributed sources and produce CO₂ from air virtually anywhere that it is needed. In this paper, the performance of a new radial flow reactor (RFR) for CO₂ adsorption from ambient air is reported. The reactor uses a supported amine sorbent and is operated in a batch mode of operation or semi-continuously, respectively without or with sorbent circulation. The radial flow reactor, containing 2 kg of the adsorbent, is successfully scaled up from the experimental results obtained with a fixed bed reactor using only 1 g of the adsorbent. In the batch operation mode, the sorbent in the annular space of the RFR is regenerated in situ. With sorbent circulation, the RFR is loaded and unloaded batchwise and only used as an adsorber. A sorbent batch loaded with CO₂ is transported to and regenerated in an external (fluid bed) regenerator. The RFR unit is characterized by a low contacting energy (0.7−1.5 GJ/ton-CO₂) and a relatively short adsorption time (24−43 min) compared to other DAC processes using the same types of sorbents. The contactor concept is ready for further scale-up and continuous application.

【 授权许可】

Unknown