Abstract:

For improving cold energy utilization of liquefied natural gas(LNG) and power generation of CO₂ near-zero emission power cycle and reducing energy consumption of CO₂ emission reduction, the exergy analysis of LNG cold energy utilization in CO₂ near-zero emission power cycle was performed.A natural gas Rankine cycle with integrated CO₂ near-zero emission power cycle was proposed.While maintaining the necessary supply of cold energy in pre-cooling and liquefaction of CO₂, the deep cryogenic exergy of LNG in CO₂ near-zero emission power cycle was converted to power by the natural gas Rankine cycle.The results showed that with the integration of the two above-mentioned power cycles, the exergy efficiency of LNG cold energy utilization could be increased from 34.9% to 55.7%, and the exergy efficiency of the entire integrated power cycle reached 57.9%.Meanwhile, the influences of some parameters of the natural gas Rankine cycle on power generation efficiency were analyzed.

Key words: 液化天然气冷能利用hansi-font-family: 宋体" lang=EN-US>;CO₂FONT-SIZE: 10.5pt, mso-bidi-font-size: 11.0pt, mso-ascii-font-family: Calibri, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA">捕集集成

关键词: 液化天然气冷能利用hansi-font-family: 宋体" lang=EN-US>;CO₂FONT-SIZE: 10.5pt, mso-bidi-font-size: 11.0pt, mso-ascii-font-family: Calibri, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA">捕集集成