DOI: 10.1021/acs.energyfuels.9b03342
论文题名: Simultaneous Removal of CO2 and H2S from Biogas by Blending Amine Absorbents: A Performance Comparison Study
作者: Lee W.Y. ; Park S.Y. ; Lee K.B. ; Nam S.C.
刊名: Energy and Fuels
ISSN: 8870624
出版年: 2020
卷: 34, 期: 2 语种: 英语
Scopus关键词: Additives
; Biogas
; Blending
; Carbon dioxide
; Climate change
; Economics
; Gas absorption
; Gas emissions
; Greenhouse gases
; Global economic growth
; N-methyldiethanolamine
; Performance comparison
; Post-combustion captures
; Regeneration performance
; Regeneration rate
; Simultaneous absorption
; Simultaneous removal
; Loading
英文摘要: Greenhouse gas treatment is urgently needed because of the impact of climate change caused by greenhouse gas emissions after global economic growth. In this study, postcombustion capture was carried out to screen absorbents for simultaneous absorption and regeneration of CO2 and H2S byproducts of biogas using N-methyldiethanolamine (MDEA)-based additives. Twelve different absorbents were selected and compared according to the types of the amine group and the alcohol group. The mixture gas of 35 vol % CH4, 15 vol % CO2, and 50 ppm H2S balanced by N2 was used for absorption and regeneration. Absorption and regeneration were carried out at 35 and 80 °C, respectively. The absorbent concentration was fixed at 4.5 wt % for MDEA and 0.5 wt % for additives. In the continuous absorption and regeneration experiments, rich loading, lean loading, cyclic loading, absorption rate, and desorption rate were measured according to the loading values of CO2 and H2S using MDEA/additive mixed absorbent. CO2-rich loading was excellent in MDEA/diethylenetriamine (DETA), and CO2 cyclic capacity was excellent in MDEA/bis(3-aminopropyl)amine (APA). H2S-rich loading was superior in MDEA/APA, and H2S cyclic capacity was superior in MDEA/DETA. The CO2 absorption and regeneration rates were excellent in MDEA/piperazine (PZ), and the H2S absorption and regeneration rates were excellent in MDEA/2-amino-2-methyl-1-propanol. MDEA-based blending absorbent showed better absorption and regeneration performance than MDEA, and MDEA/PZ showed good performance for CO2 but very poor performance for H2S. It was confirmed that MDEA/APA was superior for gas composition in the simultaneous absorption and regeneration of CO2 and H2S. © 2020 American Chemical Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159226
Appears in Collections: 气候变化与战略
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作者单位: Greenhouse Gas Laboratory, Korea Institute of Energy Research (KIER), 152, Gajeong-ro, Yuseong-gu, Daejeon, 34129, South Korea; Department of Chemical and Biological Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul, 02841, South Korea
Recommended Citation:
Lee W.Y.,Park S.Y.,Lee K.B.,et al. Simultaneous Removal of CO2 and H2S from Biogas by Blending Amine Absorbents: A Performance Comparison Study[J]. Energy and Fuels,2020-01-01,34(2)