首页|Conceptual design and performance evaluation of a novel cryogenic integrated process for extraction of neon and production of liquid hydrogen
Conceptual design and performance evaluation of a novel cryogenic integrated process for extraction of neon and production of liquid hydrogen
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Novel integration of a hydrogen liquefaction process and cryogenic rectification of air is presented. The thermodynamics analysis including the 2nd Law and sensitivity analysis regarding this process are conducted. The proposed cryogenic process can produce 111.3 kg/s of nitrogen and 42 kg/s of oxygen with argon. In addition, this process produces more than 132 × 10~3 tons of liquid hydrogen and 751 tons of crude neon per year. Moreover, as the number of the used compressor is very fewer than of the conventional process, the required power consumption of the proposed cryogenic plant is almost low. Based on the exergy analysis, using expanders, providing the requested refrigeration condition by solar heat exchangers and proper streams, and integrating two processes with the similar operating condition, the exergetic efficiency of the cycle is more than 70 %. The sensitivity analysis of operating parameters such as pressure, temperature, reflux ratio, and the number of stages of column presents their the importance of them on the recovered neon, oxygen, and nitrogen. Moreover, the production of cryogenic liquids is more sensitive to operating pressure and temperature than the reflux ratio and the number of stages.
Integration cryogenicHydrogen liquefactionHybrid energy systemRenewable energyCrude neon
Mehdi Mehrpooya、Mehran Saedi、Ali Allahyarzadeh
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Renewable Energies and Environment Department, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran
School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
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