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Development and property study of two-phase absorbent for carbon capture in coal-fired flue gas
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Qiyue ZHANG1, Mengxiang FANG1, Kang ZHOU1, Tao WANG1, Wei ZHANG2, Chunliang GE2, Li ZHANG2, Fei LIU1, 3
Thermal Power Generation | 2023, 52(4) : 24 - 33
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Thermal Power Generation | 2023, 52(4): 24-33
• Special topics on low carbon transformation of power system under the "double-carbon" goal •
Development and property study of two-phase absorbent for carbon capture in coal-fired flue gas
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Qiyue ZHANG1, Mengxiang FANG1, Kang ZHOU1, Tao WANG1, Wei ZHANG2, Chunliang GE2, Li ZHANG2, Fei LIU1, 3
Affiliations
  • 1.State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310000, China
  • 2.Zhejiang Tiandi Environment Protection Technology, Hangzhou 310000, China
  • 3.Zhejiang EnergyR & D Institute Co., Ltd., Hangzhou 311121, China
Published: 2023-04-25 doi: 10.19666/j.rlfd.202207131
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Chemical absorption method is an effective way to capture CO2 from flue gas of coal burning. Compared with conventional organic amine absorbents, two-phase absorbent can significantly reduce the regenerative energy consumption and the capture cost. A new type of two-phase sorbent is developed, which uses the physical solvent diethylene glycol dimethyl ether as split-phase agent, ethanolamine and hydroxyethyl ethylenediamine as the main agent, and its absorption regeneration performance, viscosity, water phase proportion and phase separation interval is tested. Moreover, nuclear magnetic resonance (NMR) spectroscopy is carried out for the two phases in the sorbent to determine the composition and phase splitting mechanism. The organic amine composition in the formulation is optimized, and the results show that, the absorption and regeneration performance of the optimized absorbent is better than that of the conventional 5 mol/L ethanolamine absorbent. The cyclic absorption capacity can reach 2.086 mol/kg, more than 99% of CO2 is enriched in water phase, and the flow of the absorbent entering into the regenerator can be reduced by about 40%. The viscosity of the water-rich phase is lower than 10 mPa∙s, the theoretical regeneration energy consumption is 2.688 GJ/t (calculated in CO2), indicating the new two-phase sorbent has a good industrial application prospect.

two-phase absorbent  /  chemical absorption  /  organic amine  /  carbon dioxide capture  /  coal-fired flue gas
Qiyue ZHANG, Mengxiang FANG, Kang ZHOU, Tao WANG, Wei ZHANG, Chunliang GE, Li ZHANG, Fei LIU. Development and property study of two-phase absorbent for carbon capture in coal-fired flue gas[J]. Thermal Power Generation, 2023 , 52 (4) : 24 -33 . DOI: 10.19666/j.rlfd.202207131
Funding
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  • Pioneer R&D Program of Zhejiang Province(2022C03040)
  • National Key Research and Development Program(2017YFB0603300)
Appendix
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Year 2023 volume 52 Issue 4
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58
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Article Info
doi: 10.19666/j.rlfd.202207131
  • Receive Date：2022-07-08
  • Online Date：2026-01-23
  • Published：2023-04-25
Article Data
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History
  • Received：2022-07-08
Funding
Pioneer R&D Program of Zhejiang Province(2022C03040)
National Key Research and Development Program(2017YFB0603300)
Affiliations
    1.State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310000, China
    2.Zhejiang Tiandi Environment Protection Technology, Hangzhou 310000, China
    3.Zhejiang EnergyR & D Institute Co., Ltd., Hangzhou 311121, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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