Source Jouranl of CSCD
Source Journal of Chinese Scientific and Technical Papers
Included as T2 Level in the High-Quality Science and Technology Journals in the Field of Environmental Science
Core Journal of RCCSE
Included in the CAS Content Collection
Included in the JST China
Indexed in World Journal Clout Index (WJCI) Report
ZHANG Bo, ZHAO Yi-hua, TAO Jun, JI Min, MA Tong-yu, SHANG Chen. INFLUENCE MECHANISM AND KINETIC STUDY OF CaO PRETREATMENT ON HIGH-SOLID SLUDGE ANAEROBIC DIGESTION PERFORMANCE[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(4): 140-146. doi: 10.13205/j.hjgc.202104022
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

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

doi: 10.13205/j.hjgc.202211028
  • Received Date: 2021-11-19
    Available Online: 2023-03-24
  • 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.
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