STEAM HYDRATION ACTIVATION OF CELLULOSE TEMPLATE MODIFIED Ca-BASED CO<sub>2</sub> SORBENT

WU Yan; RONG Nai; HAN Long; LIU Kaiwei; WANG Jiuheng; MU Zhengyong; WANG Shanshan; SHI Xiuliang

doi:10.13205/j.hjgc.202405021

Volume 42 Issue 5

May 2024

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2024 > 42(5): 163-171

WU Yan, RONG Nai, HAN Long, LIU Kaiwei, WANG Jiuheng, MU Zhengyong, WANG Shanshan, SHI Xiuliang. STEAM HYDRATION ACTIVATION OF CELLULOSE TEMPLATE MODIFIED Ca-BASED CO2 SORBENT[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(5): 163-171. doi: 10.13205/j.hjgc.202405021

Citation:

WU Yan, RONG Nai, HAN Long, LIU Kaiwei, WANG Jiuheng, MU Zhengyong, WANG Shanshan, SHI Xiuliang. STEAM HYDRATION ACTIVATION OF CELLULOSE TEMPLATE MODIFIED Ca-BASED CO₂ SORBENT[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(5): 163-171. doi: 10.13205/j.hjgc.202405021

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STEAM HYDRATION ACTIVATION OF CELLULOSE TEMPLATE MODIFIED Ca-BASED CO₂ SORBENT

doi: 10.13205/j.hjgc.202405021

1. School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230601, China;
2. Anhui Institute of Strategic Study in Carbon Emissions Peak and Carbon Neutrality in Urban-rural Development, Hefei 230601, China;
3. Institute of Energy and Power Engineering, College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310014, China;
4. Anhui Province Engineering Laboratory of Advanced Building Materials, Anhui Jianzhu University, Hefei 230601, China

Received Date: 2023-04-13
Available Online: 2024-07-11

Abstract

Abstract

The modified Ca-based sorbent particles were prepared by the extrusion-spheronization method. The cyclic CO₂ capture capacity was tested using the dual fixed bed reaction system. After 20 cycles, the CO₂ uptake of the sorbents with 5% cement and 10% cellulose added was 0.19 g/g. The modified Ca-based absorbents were treated with separate hydration after the calcination under different steam volume fraction and temperature, to regenerate the CO₂ capture performance. The CO₂ sorption of the modified sorbent was 0.59 g/g after 20 cycles, which was realized by the hydration with 30% steam of 300 ℃. The 1st, 10th, 20th carbonation of the sorbent treated with steam hydration was examined by using the thermal gravimetric analyzer, in order to investigate the effect of hydration treatment on the reaction kinetics of the carbonation stage of the sorbent. It was found that steam hydration reactivation improves the reaction rate of the product layer diffusion control stage of carbonation. Furthermore, the test results of the micro-morphology, pore structure, and mechanical properties of the sorbent particles before and after hydration reactivation showed significant cracks on the surface of the adsorbents after activation, and the crushing force and anti-abrasion properties also decreased remarkably.
- CO₂ capture,
- Ca-based sorbents,
- cellulose template,
- steam hydration,
- mechanical property

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References(37)

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