A method for liquefying CO2-rich flows.
By compressing and cooling CO2-rich gas to supercritical pressure and adjusting pressure and flow rates, the process stabilizes density and enhances liquefaction efficiency despite ambient temperature fluctuations.
JP7877342B2Active Publication Date: 2026-06-22LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE
Patent Information
- Application Number
- JP2023552287
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2021-03-03
- Filing Date
- 2022-03-02
- Publication Date
- 2026-06-22
- Estimated Expiration
- 2042-03-02
Smart Images
Figure 0007877342000001 
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Abstract
In a method for liquefying a carbon dioxide rich gas, the gas (1) is compressed in a compressor (10, 20) to a first pressure above its critical pressure to form a compressed gas, and the compressed gas is cooled through heat exchange with a refrigerant to a variable temperature to liquefy a gas having a liquefaction rate of 370 to 900 kg / m 3 a cooled compressed gas (3) having a density of 0.1 to 0.5 g / L, the cooled compressed gas is cooled in a first heat exchanger (40) to a temperature below the critical temperature at supercritical pressure, the gas cooled below the critical temperature is expanded to a second pressure of 45 to 60 bara to form a two-phase fluid, the two-phase fluid is separated in a phase separator (60) to form a liquid and a gas, and the liquid portion (5) coming from the phase separator provides cooling to the first heat exchanger.
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Citation Information
Patent Citations
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