Installation and process for production of cryogenic fluid
JP2024047550A5Pending Publication Date: 2026-07-02LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE
- Filing Date
- 2023-08-02
- Publication Date
- 2026-07-02
AI Technical Summary
Technical Problem
Existing hydrogen liquefaction processes require large heat exchangers in the pre-cooling cold box, leading to inefficient energy consumption and suboptimal performance due to the compromise between cold box compactness and power consumption.
Method used
A separate cycle gas cooling unit and heating circuit are introduced, utilizing first cycle heat exchangers cooled by a pre-cooling fluid circuit, with thermosiphons controlling the pre-cooling fluid flow to optimize precooling efficiency and reduce energy consumption.
Benefits of technology
This configuration allows for more efficient precooling, reducing the size of cold boxes and enhancing overall energy efficiency by optimizing the precooling process, thereby improving the hydrogen liquefaction process.
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Abstract
To provide an installation and a process for production of a cryogenic fluid.SOLUTION: Provided is an installation 1 comprising a set of heat exchangers 5, 6 and 7 in thermal exchange with a circuit 2 for cooling hydrogen, positioned in at least either of cold boxes 3 or 4. The installation having a pre-cooling device 8 is configured to cool in advance the circuit for cooling the gas to a first determined temperature. The installation having a device 9 for cryogenic cooling is configured to cool the circuit 2 for cooling the gas to a second determined temperature lower than the first temperature. Cycle gas cooling units 15, 16 and 7 and / or cycle gas heating units 7 and 15 have one or more first cycle heat exchangers distinguished from a first part of a pre-cooling heat exchanger of the circuit for cooling the gas. The first cycle heat exchangers are cooled by exchanging heat with a pre-cooling fluid circuit 18 of the pre-cooling device.SELECTED DRAWING: Figure 1
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