Analysis of Operating Parameters and Energy Consumption of Chemical Absorption Carbon Dioxide Capture System in Natural Gas Power Plants

Xu WANG; Hao YANG; Mancang WANG; Yanfeng LI; Yu TIAN; Chong WANG; Xuliang JIN; Zhongyuan HUANG; Aiming YIN

doi:10.16513/j.2096-2185.DE.2308509

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Distributed Energy ›› 2023, Vol. 8 ›› Issue (5) : 69-76. DOI: 10.16513/j.2096-2185.DE.2308509

Application Technology

Analysis of Operating Parameters and Energy Consumption of Chemical Absorption Carbon Dioxide Capture System in Natural Gas Power Plants

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Abstract

In order to clarify the correlation mechanism between carbon dioxide capture operation parameters and system energy use in gas-fired power plants, and reduce the energy consumption and cost per unit of carbon dioxide capture, the carbon capture and storage (CCS) demonstration device of a 450 MW gas-fired power plant was taken as the research object, and the main process of CCS process was introduced. The properties of MEA and AMP-PZ absorbers were compared and analyzed by systematic test of absorber and regenerator. The effects of flue gas temperature, liquid gas ratio of absorber, desorption pressure and carbon dioxide capture rate on energy consumption were investigated. The results show that under the operating conditions of MEA and AMP-PZ with flue gas temperature of 38 ℃, liquid-gas ratio of 0.54 and 0.42, and regeneration temperature of 112 ℃, the regenerative energy consumption is 4.49 and 4.24 MJ/kg, respectively.

Key words

natural gas power plant / carbon capture and storage (CCS) / energy consumption

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Xu WANG , Hao YANG , Mancang WANG , et al . Analysis of Operating Parameters and Energy Consumption of Chemical Absorption Carbon Dioxide Capture System in Natural Gas Power Plants[J]. Distributed Energy Resources. 2023, 8(5): 69-76 https://doi.org/10.16513/j.2096-2185.DE.2308509

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