Hydrogen enrichment by CO2 anti-sublimation integrated with triple mixed refrigerant-based liquid hydrogen production process

Naquash, Ahmad; Haider, Junaid; Qyyum, Muhammad Abdul; Islam, Muhammad Remanul; Min, Seongwoong; Lee, Sanggyu; Lim, Hankwon; Lee, Moonyong

doi:10.1016/j.jclepro.2022.130745

Cited by 16 publications

(4 citation statements)

References 25 publications

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“…Generally, in H 2 liquefaction cycles, Δ T min values are specified to be about 1–2 °C. 26 , 71 , 92 , 212 , 214 Some researchers reported this value to be between 1 and 3 °C, which is presented in Table 4 .…”

Section: Different Methods To Improve the Performance Of Hydrogen Liq...mentioning

confidence: 94%

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Strategies To Improve the Performance of Hydrogen Storage Systems by Liquefaction Methods: A Comprehensive Review

et al. 2023

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The main challenges of liquid hydrogen (H2) storage as one of the most promising techniques for large-scale transport and long-term storage include its high specific energy consumption (SEC), low exergy efficiency, high total expenses, and boil-off gas losses. This article reviews different approaches to improving H2 liquefaction methods, including the implementation of absorption cooling cycles (ACCs), ejector cooling units, liquid nitrogen/liquid natural gas (LNG)/liquid air cold energy recovery, cascade liquefaction processes, mixed refrigerant systems, integration with other structures, optimization algorithms, combined with renewable energy sources, and the pinch strategy. This review discusses the economic, safety, and environmental aspects of various improvement techniques for H2 liquefaction systems in more detail. Standards and codes for H2 liquefaction technologies are presented, and the current status and future potentials of H2 liquefaction processes are investigated. The cost-efficient H2 liquefaction systems are those with higher production rates (>100 tonne/day), higher efficiency (>40%), lower SEC (<6 kWh/kgLH2), and lower investment costs (1–2 $/kgLH2). Increasing the stages in the conversion of ortho- to para-H2 lowers the SEC and increases the investment costs. Moreover, using low-temperature waste heat from various industries and renewable energy in the ACC for precooling is significantly more efficient than electricity generation in power generation cycles to be utilized in H2 liquefaction cycles. In addition, the substitution of LNG cold recovery for the precooling cycle is associated with the lower SEC and cost compared to its combination with the precooling cycle.

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Section: Different Methods To Improve the Performance Of Hydrogen Liq...mentioning

confidence: 94%

“…The Δ T min can be modified by altering the values of the configuration variables. Generally, in H 2 liquefaction cycles, Δ T min values are specified to be about 1–2 °C. ,,,, Some researchers reported this value to be between 1 and 3 °C, which is presented in Table .…”

Section: Different Methods To Improve the Performance Of Hydrogen Liq...mentioning

confidence: 99%

Strategies To Improve the Performance of Hydrogen Storage Systems by Liquefaction Methods: A Comprehensive Review

et al. 2023

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“…However, CO 2 can be solidified via an anti-sublimation process, whereby CO 2 vapors are directly transformed into the solid state. This feat can be achieved within a specific temperature and pressure range, i.e., 1 bar and −81 • C to 6.3 bar and −56 • C [39]. The same technique has been applied to separating CH 4 from Biogas [40].…”

Section: Co 2 Solidification Processmentioning

confidence: 99%

“…The investigation of the MITA value is essential, as it validates the feasibility of the heat exchanger. The value of the MITA in the proposed study is set as 1 • C [39].…”

Section: Composite Curve Analysismentioning

confidence: 99%

Hydrogen Purification through a Membrane–Cryogenic Integrated Process: A 3 E’s (Energy, Exergy, and Economic) Assessment

Naquash

Riaz

Yehia

et al. 2023

Gases

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Hydrogen (H2) is known for its clean energy characteristics. Its separation and purification to produce high-purity H2 is becoming essential to promoting a H2 economy. There are several technologies, such as pressure swing adsorption, membrane, and cryogenic, which can be adopted to produce high-purity H2; however, each standalone technology has its own pros and cons. Unlike standalone technology, the integration of technologies has shown significant potential for achieving high purity with a high recovery. In this study, a membrane–cryogenic process was integrated to separate H2 via the desublimation of carbon dioxide. The proposed process was designed, simulated, and optimized in Aspen Hysys. The results showed that the H2 was separated with a 99.99% purity. The energy analysis revealed a net-specific energy consumption of 2.37 kWh/kg. The exergy analysis showed that the membranes and multi-stream heat exchangers were major contributors to the exergy destruction. Furthermore, the calculated total capital investment of the proposed process was 816.2 m$. This proposed process could be beneficial for the development of a H2 economy.

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Process efficiency enhancement of integrated hydrogen enrichment and liquefaction

Islam,

Naquash,

Rehman

et al. 2024

Computer Aided Chemical Engineering

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Hydrogen enrichment by CO2 anti-sublimation integrated with triple mixed refrigerant-based liquid hydrogen production process

Cited by 16 publications

References 25 publications

Strategies To Improve the Performance of Hydrogen Storage Systems by Liquefaction Methods: A Comprehensive Review

Strategies To Improve the Performance of Hydrogen Storage Systems by Liquefaction Methods: A Comprehensive Review

Hydrogen Purification through a Membrane–Cryogenic Integrated Process: A 3 E’s (Energy, Exergy, and Economic) Assessment

Process efficiency enhancement of integrated hydrogen enrichment and liquefaction

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