INFLUENCE OF FLUE GAS COMPONENTS ON NO ABSORPTION BY METHYLUREA-BASED DEEP EUTECTIC SOLVENT

DAI Ruijia; XIAO Xinxin; ZHAO Yongqi; WEI Aoran; CHEN Xingxing; YU Jianglong; DOU Jinxiao

doi:10.13205/j.hjgc.202405008

Volume 42 Issue 5

May 2024

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DAI Ruijia, XIAO Xinxin, ZHAO Yongqi, WEI Aoran, CHEN Xingxing, YU Jianglong, DOU Jinxiao. INFLUENCE OF FLUE GAS COMPONENTS ON NO ABSORPTION BY METHYLUREA-BASED DEEP EUTECTIC SOLVENT[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(5): 62-69. doi: 10.13205/j.hjgc.202405008

Citation:

DAI Ruijia, XIAO Xinxin, ZHAO Yongqi, WEI Aoran, CHEN Xingxing, YU Jianglong, DOU Jinxiao. INFLUENCE OF FLUE GAS COMPONENTS ON NO ABSORPTION BY METHYLUREA-BASED DEEP EUTECTIC SOLVENT[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(5): 62-69. doi: 10.13205/j.hjgc.202405008

Citation:

DAI Ruijia, XIAO Xinxin, ZHAO Yongqi, WEI Aoran, CHEN Xingxing, YU Jianglong, DOU Jinxiao. INFLUENCE OF FLUE GAS COMPONENTS ON NO ABSORPTION BY METHYLUREA-BASED DEEP EUTECTIC SOLVENT[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(5): 62-69. doi: 10.13205/j.hjgc.202405008

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INFLUENCE OF FLUE GAS COMPONENTS ON NO ABSORPTION BY METHYLUREA-BASED DEEP EUTECTIC SOLVENT

doi: 10.13205/j.hjgc.202405008

Key Laboratory for Advanced Coal and Coking Technology of Liaoning Province, School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, China

Received Date: 2023-04-28
Available Online: 2024-07-11

Abstract

Abstract

Deep eutectic solvents (DESs), as a new kind of green solvent, are non-toxic and harmless, hard to evaporate, and have good thermal stability. Using deep eutectic solvents to soak up toxic gases in flue (especially NO) becomes one of the key lookup contents. In this study, methyl urea (MTU) and acetylcholine chloride (AchCl) were used to prepare a deep eutectic solvent (MTU-AchCl DES) to learn about its NO absorption performance, and impact of DESs’ mixing ratio, NO concentration, O₂, H₂O and carbon dioxide on the absorption performance. The experimental consequences showed that the overall denitrification performance of MTU-AchCl DESs was best when the molar ratio was 1∶2. When there was O₂ in the flue gas, the highest absorption capacity of NO by MTU-AchCl DESs was 0.223 g/g. O₂ promoted the absorption with the aid of oxidizing NO into NO₂. When CO₂ was delivered into the flue gas, the absorption of MTU-AchCl DESs on NO had promotion in a certain degree. When H₂O was once introduced, the absorption of DESs decreased, and H₂O had an inhibitory impact on the absorption of NO in the DESs system. Through FI-IR and Gaussian simulation results, it was discovered that MTU-AchCl DESs and NO were mixed in the structure of nitrogen-oxygen double bond (NO), nitrogen-oxygen single bond (N—O) and nitrogen-nitrogen single bond (N—N). After the addition of O₂, CO₂ and H₂O, the response enthalpy of the DESs machine changed from -53.334 kJ/mol to -56.212 kJ/mol, -55.423 kJ/mol and -50.982 kJ/mol. The simulation result was further verified that the components of flue gas had different effects on the absorption of NO.
- deep eutectic solvent,
- flue gas components,
- denitration,
- methyl urea,
- absorption

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References(32)

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