Integrated hydrogen liquefaction process with steam methane reforming by using liquefied natural gas cooling system

Yang, Jae-Hyeon; Yoon, Young-Gak; Ryu, Min-Cheol; An, Su-Kyung; Shin, Jisup; Lee, Chul‐Jin

doi:10.1016/j.apenergy.2019.113840

Cited by 70 publications

(13 citation statements)

References 21 publications

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“…Three systems are involved: production systems, storage systems, and delivery systems. Production systems include many routes; the most prevalent are: Steam Methane Reforming (SMR), which is the process in which methane extracted from natural gas is heated by steam to generate hydrogen [5]; coal gasification, which is the process in which Carbon Dioxide (CO 2 ) is generated by adding air to the coal through combustion. Carbon dioxide then reacts with the rest of the carbon in the coal to form carbon monoxide, and in the final process, carbon monoxide reacts with steam, generating hydrogen [6]; electrolysis of water, which is the process of using electricity to decompose water into oxygen and hydrogen [7].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Energy Demand Growth Prediction and Assessment (2021–2050) Using a System Thinking and System Dynamics Approach

et al. 2022

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Adoption of hydrogen energy as an alternative to fossil fuels could be a major step towards decarbonising and fulfilling the needs of the energy sector. Hydrogen can be an ideal alternative for many fields compared with other alternatives. However, there are many potential environmental challenges that are not limited to production and distribution systems, but they also focus on how hydrogen is used through fuel cells and combustion pathways. The use of hydrogen has received little attention in research and policy, which may explain the widely claimed belief that nothing but water is released as a by-product when hydrogen energy is used. We adopt systems thinking and system dynamics approaches to construct a conceptual model for hydrogen energy, with a special focus on the pathways of hydrogen use, to assess the potential unintended consequences, and possible interventions; to highlight the possible growth of hydrogen energy by 2050. The results indicate that the combustion pathway may increase the risk of the adoption of hydrogen as a combustion fuel, as it produces NOx, which is a key air pollutant that causes environmental deterioration, which may limit the application of a combustion pathway if no intervention is made. The results indicate that the potential range of global hydrogen demand is rising, ranging from 73 to 158 Mt in 2030, 73 to 300 Mt in 2040, and 73 to 568 Mt in 2050, depending on the scenario presented.

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Section: Introductionmentioning

confidence: 99%

Hydrogen Energy Demand Growth Prediction and Assessment (2021–2050) Using a System Thinking and System Dynamics Approach

et al. 2022

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“…They concluded that input energy savings can range from 30% to 50% depending on the intensity of the process configuration. Yang et al 23 proposed an integrated large-scale hydrogen liquefaction plant with a steam methane reforming (SMR) process using LNG cold energy. They performed a feasibility study in comparison with commercial plants and conducted a techno-economic analysis (TEA) of the proposed process.…”

Section: Introductionmentioning

confidence: 99%

Comparative design, thermodynamic and techno‐economic analysis of utilizing liquefied natural gas cold energy for hydrogen liquefaction processes

Noh

Park

Kim

et al. 2022

Intl J of Energy Research

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Summary This study mainly focuses on determining the optimal configuration that efficiently utilizes liquefied natural gas (LNG) cold energy in hydrogen precooling for liquid hydrogen production. To achieve this goal, two different configurations are designed: (a) adding LNG cold energy to the existing hydrogen precooling cycle and (b) replacing the existing hydrogen precooling cycle with LNG cold energy. An equilibrium hydrogen model is developed to reflect the thermodynamic property of ortho‐para conversion of hydrogen. Bayesian optimization is performed to determine the optimal operating conditions which minimize the specific energy consumption for all configurations. The specific energy consumption of the configuration involving hydrogen precooling with only LNG is 5.613 kWh/kg‐LH2, and it is reduced by 8.13% and 3.19% from the base case design and the configuration involving hydrogen precooling with both LNG and a mixed refrigerant cycle, respectively. In addition, a techno‐economic analysis is conducted. Compare to the base case design, the capital cost and operating cost of the design replacing hydrogen precooling with LNG are reduced by 31.76% and 11.55%, respectively. This study shows that the proposed design of replacing the hydrogen precooling cycle with an LNG stream can save energy consumption, moreover, it is highly effective for capital investment saving due to its simple configuration.

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“…In addition, the process employing the SMR reformer can be made environmentally friendly by implementing a CO 2 capture process and utilization in either CO, methanol, and other hydrocarbons production 24,25 . Furthermore, the SMR process achieves favorable economic feasibility when hydrogen is liquefied by using a liquid natural gas cooling system and waste‐heat recuperation 26,27 . This latter can be efficiently attained using high‐temperature fuel cells to supply the endothermal reaction 28 .…”

Section: Introductionmentioning

confidence: 99%

“…24,25 Furthermore, the SMR process achieves favorable economic feasibility when hydrogen is liquefied by using a liquid natural gas cooling system and waste-heat recuperation. 26,27 This latter can be efficiently attained using high-temperature fuel cells to supply the endothermal reaction. 28 The use of the pre-established infrastructure helps in reducing the overall cost of hydrogen up to 17.5%.…”

Section: Introductionmentioning

confidence: 99%

Design and multiobjective optimization of membrane steam methane reformer: A computational fluid dynamic analysis

Chérif

Nebbali

Lee

2022

Intl J of Energy Research

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Summary A membrane reactor affords promising advantages for processes; however, it faces many issues such as the high cost, manufacturing complexity, and ineffective zones. In this numerical analysis, we propose a design and multiobjective optimization of membrane steam methane reforming reactor to attain an effective arrangement for high hydrogen yield and separation. Four configurations were investigated for comparative analysis, adopting continuous and segmented catalyst and membrane arrangements; thereafter, the genetic algorithm optimization approach was applied. The advantages of the proposed membrane and catalyst design were shown and justified. Compared to the conventional case, the results showed high hydrogen yield and separation in the design case, despite the significant reduction in the Pd membrane length. For the optimal case, further improvement of the hydrogen separation and high hydrogen yield were achieved with 20% less catalyst load and an 80% reduction in the membrane length as the membrane was effectively embedded, which can significantly reduce the cost of the process. Furthermore, the complexity of the membrane reactor was avoided as the reaction and the separation were conducted separately.

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Integrated hydrogen liquefaction process with steam methane reforming by using liquefied natural gas cooling system

Cited by 70 publications

References 21 publications

Hydrogen Energy Demand Growth Prediction and Assessment (2021–2050) Using a System Thinking and System Dynamics Approach

Hydrogen Energy Demand Growth Prediction and Assessment (2021–2050) Using a System Thinking and System Dynamics Approach

Comparative design, thermodynamic and techno‐economic analysis of utilizing liquefied natural gas cold energy for hydrogen liquefaction processes

Design and multiobjective optimization of membrane steam methane reformer: A computational fluid dynamic analysis

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