超重力旋转床脱除14CO2的试验及传质性能研究

doi:10.27045/j.1000-8187.202603001

Abstract

Abstract: The high-gravity rotating bed technology was applied to the treatment of waste gas containing ¹⁴CO₂ in nuclear power plant. NaOH solution was used as absorbent, and CO₂ absorption experiments were carried out on the high-gravity rotating bed. The effects of rotational speed, absorbant flow rate, absorbent concentration, inlet gas flow rate and inlet CO₂ concentration on CO₂ removal efficiency η, overall gas-phase volumetric mass transfer coefficient K_ya and effective mass transfer specific surface area a were investigated. The results show that η increases with the increase of absorbent flow rate and absorbent concentration, decreases with the increase of inlet gas flow rate and inlet CO₂ concentration, and first increases and then decreases with the increase of rotational speed. Under operating conditions with a rotational speed of 1 000 r/min, an absorbent flow rate of 8 L/min, and an absorbent concentration of 4%, η can reach above 95%.The study of mass transfer performance shows that K_ya and a both increase with the increase of liquid flow rate and gas flow rate, decrease with the increase of inlet CO₂ concentration, and show a trend of first increasing and then decreasing with the increase of rotational speed. K_ya increases with the increase of absorption liquid concentration, while a shows an opposite trend.

Key words: ¹⁴CO₂, high-gravity rotating bed, absorption, mass transfer

CLC Number:

TL941+.2

XIE Zhongyin, PEI Jianlu, LIANG Xuefei, WANG Mang, LIANG Guoliang, SHUANG Yingzhong, LIU Zhixin, CHEN Xin, LIANG Shuwei, LI Yongguo, YU Jie. Experimental study on the removal of ¹⁴CO₂ and mass transfer performance in a high-gravity rotating bed[J].RADIATION PROTECTION, 2026, 46(3): 189-197.

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Experimental study on the removal of ¹⁴CO₂ and mass transfer performance in a high-gravity rotating bed

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Experimental study on the removal of 14CO2 and mass transfer performance in a high-gravity rotating bed

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Experimental study on the removal of ¹⁴CO₂ and mass transfer performance in a high-gravity rotating bed