TECHNO-ENVIRONMENTAL ASSESSMENT IN NATURAL GAS DEHYDRATION WITH IMIDAZOLIUM-BASED IONIC LIQUIDS

WANG Jiaqi; DAI Chengna; YU Gangqiang; WU Bin; LIU Ning; XU Ruinian; WANG Ning; CHEN Biaohua

doi:10.13205/j.hjgc.202211028

Volume 40 Issue 11

Nov. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2022 > 40(11): 199-210

WANG Jiaqi, DAI Chengna, YU Gangqiang, WU Bin, LIU Ning, XU Ruinian, WANG Ning, CHEN Biaohua. TECHNO-ENVIRONMENTAL ASSESSMENT IN NATURAL GAS DEHYDRATION WITH IMIDAZOLIUM-BASED IONIC LIQUIDS[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(11): 199-210. doi: 10.13205/j.hjgc.202211028

Citation:

WANG Jiaqi, DAI Chengna, YU Gangqiang, WU Bin, LIU Ning, XU Ruinian, WANG Ning, CHEN Biaohua. TECHNO-ENVIRONMENTAL ASSESSMENT IN NATURAL GAS DEHYDRATION WITH IMIDAZOLIUM-BASED IONIC LIQUIDS[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(11): 199-210. doi: 10.13205/j.hjgc.202211028

Citation:

WANG Jiaqi, DAI Chengna, YU Gangqiang, WU Bin, LIU Ning, XU Ruinian, WANG Ning, CHEN Biaohua. TECHNO-ENVIRONMENTAL ASSESSMENT IN NATURAL GAS DEHYDRATION WITH IMIDAZOLIUM-BASED IONIC LIQUIDS[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(11): 199-210. doi: 10.13205/j.hjgc.202211028

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TECHNO-ENVIRONMENTAL ASSESSMENT IN NATURAL GAS DEHYDRATION WITH IMIDAZOLIUM-BASED IONIC LIQUIDS

doi: 10.13205/j.hjgc.202211028

Faculty of Environment and Life, Beijing University of Technology, Beijing 100020, China

Received Date: 2021-11-19
Available Online: 2023-03-24

Abstract

Abstract

The process flow simulation of imidazolium-based ionic liquids (ILs) used for natural gas (NG) dehydration was established by Aspen Plus. Technological and environmental impacts of different ILs in the NG dehydration process were compared by using the sensitivity analysis and life cycle assessment (LCA), and the IL structural effect on techno-environmental assessment in NG dehydration was evaluated. The results demonstrated that the ILs with[BF₄]^- combined with the cation possessing the shorter alkyl chain exhibited better dehydration performance (the order following[EMIM] [BF₄]>[BMIM] [BF₄]>[OMIM] [BF₄]). For producing 1 kg methane, the largest environmental impact lay in the[BMIM] [PF₆] based dehydration process, and its impact was 5 times the lowest scenario using[OMIM] [BF₄] on average. Furthermore, for the dehydration scenarios with same anions[BF₄]^-, the impact order was[OMIM] [BF₄]<[BMIM] [BF₄]<[EMIM] [BF₄]. The results can serve as a significant guidance strategy from both the technical and environmental assessment on screening or developing proper IL candidates for NG dehydration processes.
- ionic liquids,
- natural gas dehydration,
- process simulation,
- life cycle assessment,
- energy analysis

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References(41)

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