人工進化研究所（AERI）

Sep 14, 202310 min read

Challenges and Issues of Transport Methods for Importing Liquid Hydrogen from Overseas to Japan

Challenges and Issues of Transport Methods for Importing Liquid Hydrogen from Overseas to Japan

Quantum Physicist and Brain Scientist

Visiting Professor of Quantum Physics,

California Institute of Technology

IEEE-USA Fellow

American Physical Society-USA Fellow

PhD. & Dr. Kazuto Kamuro

AERI：Artificial Evolution Research Institute

Pasadena, California

HP: https://www.aeri-japan.com/

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This paper elucidates the technical and economic challenges and issues associated with various modes of transportation when importing liquid hydrogen from overseas to Japan. 1. Liquid Hydrogen Tankers: a. Technical Challenges and Issues: - Requirements for Insulation and Cooling Technology: Liquid hydrogen is liquefied at extremely low temperatures, necessitating advanced insulation and cooling technologies. Efficient selection of insulation materials and cooling systems is imperative. - Necessity of Safety Measures: Liquid hydrogen poses a high explosion risk, making safety measures on board vessels paramount. The development of technologies and devices to minimize leakage and fire risks is essential. b. Economic Challenges and Issues: - Construction and Operating Costs: The construction and operation of liquid hydrogen tankers incur high costs, particularly due to the implementation of insulation and cooling technologies and safety measures. - Development of Filling and Discharging Facilities: Facilities for filling and discharging liquid hydrogen need to be established, adding to the overall cost considerations. 2. Specialized Liquid Gas Tank Containers: a. Technical Challenges and Issues: - Design of Insulation and Cooling Technology: The design of insulation and cooling technologies within containers for holding liquid hydrogen is crucial. Optimizing thermal insulation performance is essential. - Pressure and Temperature Management Inside Containers: Technologies are required to manage the pressure and temperature of liquid hydrogen within containers to ensure stable transportation. b. Economic Challenges and Issues: - Construction Costs and Maintenance of Cooling Technology: Construction costs for containers equipped with specialized insulation tanks and maintenance costs for cooling technologies are influential economic factors. - Flexibility and Cost of Transportation Methods: The flexibility to adapt to multiple transportation methods is economically crucial, allowing for the selection of transportation modes tailored to regional demand. Taking all of these factors into consideration, the transportation of liquid hydrogen from overseas to Japan requires a balanced evaluation of technical challenges, economic costs, safety, sustainability, and cost-effectiveness. Various elements must be comprehensively assessed to optimize safety, sustainability, and cost efficiency. 3. Liquid Hydrogen Pipelines:

· Pipelines can be considered for long-distance transportation of liquid hydrogen. · The design, construction, and maintenance of pipelines require advanced technology.

4. Retrofitting of Transport Ships and Container Ships:

· Existing vessels can be retrofitted to accommodate the transportation of liquid hydrogen. · Specialized equipment must be installed within container ships for the containment of liquid hydrogen.

5. Air Transport:

· The use of dedicated aircraft equipped with advanced insulation facilities for transporting liquid hydrogen is also a possibility. · Air transport offers rapid transportation capabilities but demands specialized aircraft designs and technology.

Each of these transportation methods considers various elements to efficiently and safely transport liquid hydrogen. The selection of a transportation mode will be determined based on factors such as transportation distance, safety, environmental impact, cost, and infrastructure availability. 6.Transportation of Liquid Hydrogen Using Organic Chemical Hydride Method: A. The Organic Chemical Hydride Method and its Application to Liquid Hydrogen a. The organic chemical hydride method is a process related to the generation, storage, transport, and release of hydrogen gas, utilizing organic compounds to handle hydrogen. This method finds various applications in the production and utilization of hydrogen energy. Below, we provide a detailed explanation of the organic chemical hydride method and its application to liquid hydrogen. b. Basic Principles of the Organic Chemical Hydride Method:

1. Hydrogen Absorption: Organic chemical hydrides (typically organic boranes) absorb hydrogen gas. This reaction usually occurs at high temperatures, chemically binding hydrogen gas to the organic hydride, allowing for safe hydrogen storage. 2. Hydrogen Release: When hydrogen is needed, the organic hydride is processed, typically by heating or other methods, to release hydrogen gas again. This reverse reaction separates hydrogen gas from the organic hydride. 3. Safety and Ease of Handling: Organic chemical hydrides do not require high pressure or extremely low temperatures for handling hydrogen, enhancing both the safety and ease of hydrogen management.

B. Applications to Liquid Hydrogen:

1. Hydrogen Transportation: The organic chemical hydride method can be employed for transporting liquid hydrogen. It absorbs hydrogen as an organic hydride and can release it as hydrogen gas when needed, supplying liquid hydrogen at the required location, enabling remote supply of liquid hydrogen. 2. Liquid Hydrogen Storage: Hydrogen can be absorbed using the organic chemical hydride method and stored as liquid hydrogen. This allows for long-term storage of liquid hydrogen, which can be withdrawn as per demand. 3. Hydrogen Supply: It can be supplied for various applications that require liquid hydrogen, including fuel cell vehicles, rockets, industrial processes, and power generation, enhancing its utility in multiple hydrogen-related sectors. 4. Increased Energy Density: Using the organic chemical hydride method, the energy density of liquid hydrogen is improved, enabling the storage of large quantities of hydrogen within compact containers. 5. Enhanced Safety: Handling liquid hydrogen is safer, reducing risks associated with high pressures and low temperatures. Improved safety is crucial for the widespread adoption of hydrogen energy.

The organic chemical hydride method presents a promising approach for efficiently and safely handling liquid hydrogen, potentially playing a significant role in the development of hydrogen energy. However, further technological improvements and overcoming economic challenges are necessary. C. Transportation of Liquid Hydrogen Using the Organic Chemical Hydride Method The transportation of liquid hydrogen using the organic chemical hydride method is a technique for safely and efficiently conveying and storing liquid hydrogen while avoiding the handling of hydrogen gas at high pressures and extremely low temperatures, thereby enhancing safety. Below, we provide a detailed description of the process for transporting liquid hydrogen using the organic chemical hydride method.

1. Selection of Chemical Hydride: Firstly, choose an appropriate organic chemical hydride for transporting liquid hydrogen. Organic chemical hydrides are organic compounds capable of absorbing and releasing hydrogen. Common examples include ammonia borane, cyclohexane borane, and diborane. 2. Hydrogen Absorption: Place the selected organic chemical hydride near the liquid hydrogen to absorb hydrogen gas. This process typically occurs under low-temperature and high-pressure conditions. When hydrogen is absorbed into the chemical hydride, it is retained stably. 3. Hydrogen Transportation: During the transportation of liquid hydrogen, the reaction between the chemical hydride and hydrogen absorption reverses, releasing hydrogen gas. As a result, hydrogen gas is extracted as liquid hydrogen accumulates inside the transportation container. This process is gradual and adjustable to secure the required amount of liquid hydrogen. 4. Safety and Transport: Containers for transporting liquid hydrogen are insulated and equipped with suitable cooling systems to maintain liquid hydrogen at low temperatures. Additionally, to ensure safety, these containers control pressure and include adequate ventilation devices and safety valves, preventing hydrogen gas leaks during transport. 5. Handling at the Destination: Upon reaching the destination, supply the liquid hydrogen for its intended applications. During supply, reverse the reaction with the chemical hydride to extract and utilize hydrogen gas.

Transporting liquid hydrogen using the organic chemical hydride method simplifies its handling and enhances safety, especially for remote or specialized applications. D. Advantages and Disadvantages of Transporting Liquid Hydrogen Using the Organic Chemical Hydride Method Transporting liquid hydrogen using the organic chemical hydride method has several advantages and disadvantages. We detail each of them below.

a. Advantages:

1. Enhanced Safety: The organic chemical hydride method reduces the need to handle hydrogen gas at high pressures or extremely low temperatures, thus improving safety. Given the high-risk nature of handling liquid hydrogen, this method reduces the risk of accidents. 2. Transportation Benefits: Converting liquid hydrogen into chemical hydrides for transport simplifies handling and extends transport distances. This makes it possible to supply liquid hydrogen to remote areas. 3. Stability of Liquid Hydrogen: Organic chemical hydrides can securely hold hydrogen in a stable form. This allows for the long-term storage of liquid hydrogen, which can be withdrawn as needed. 4. Increased Energy Density: The chemical hydride method enables the storage of hydrogen in relatively compact containers, resulting in an improved energy density for liquid hydrogen.

b. Disadvantages:

1. Decreased Energy Efficiency: The chemical hydride method requires energy for hydrogen absorption and release, leading to energy losses. This can reduce overall energy efficiency. 2. Chemical Handling: Handling chemical hydrides requires care, especially when dealing with high pressures or low temperatures. Special equipment and materials may be needed, adding to the cost. 3. Recycling and Waste Management: Using chemical hydride methods necessitates recycling of used chemical hydrides and proper waste disposal, posing environmental challenges. 4. Reaction Rate Limitations: The reaction rate in the chemical hydride method can be slow, particularly in large-scale hydrogen supply systems. Equipment expansion may be required to ensure appropriate reaction rates.

Transporting liquid hydrogen using the organic chemical hydride method is highly beneficial for specific applications but presents challenges related to energy efficiency, equipment requirements, recycling, and reaction rates. Therefore, the suitability of this method should be assessed based on specific applications and requirements. E. Challenges to Commercialize the Transportation of Liquid Hydrogen Using the Organic Chemical Hydride Method Several challenges exist, both in terms of technology and economics, to commercialize the transportation of liquid hydrogen using the organic chemical hydride method. We detail these challenges below.

a. Technological Challenges:

1. Improved Reaction Rates: Enhancing reaction rates is crucial, as the organic chemical hydride method often exhibits slow reaction kinetics. Research into catalysts and optimal reaction conditions is necessary. 2. Increased Energy Efficiency: To reduce energy losses during hydrogen absorption and release, research should focus on developing technologies like efficient heat exchange systems and energy recovery devices. 3. Material Durability: Materials capable of withstanding high pressure and low-temperature conditions need to be developed to ensure safety during the use of the chemical hydride method. 4. Recycling and Waste Management: Developing methods for recycling used chemical hydrides and managing waste is essential to minimize environmental impact.

b. Economic Challenges:

1. Cost of Chemical Hydrides: Organic chemical hydrides can be expensive, affecting the overall economics of hydrogen transportation. Research into cost-effective production methods is needed. 2. Infrastructure Investment: Building and maintaining infrastructure for the chemical hydride method can be costly, particularly for large-scale transportation systems. 3. Energy Costs: The energy required for hydrogen absorption and release can contribute significantly to operational costs. Efforts to reduce energy consumption are vital. 4. Market Competition: The chemical hydride method competes with other hydrogen transportation methods, such as pipelines and cryogenic storage, which may be more economically attractive for certain applications.

To commercialize the transportation of liquid hydrogen using the organic chemical hydride method, addressing these technological and economic challenges is essential. Collaborative efforts between researchers, industry stakeholders, and government agencies can accelerate progress in this field.

F. Exploring the Viability of Implementing Liquid Hydrogen Transportation Using the Organic Chemical Hydride Method

This research delves into a comprehensive examination of the feasibility of practically implementing the organic chemical hydride method for the transportation of liquid hydrogen, taking into account both its technical and economic aspects. a. Technical Perspectives:

1. Technological Maturation:

· The organic chemical hydride method has already found application in specific research experiments and boasts a well-established theoretical underpinning. Importantly, technological maturity is on an upward trajectory, with ongoing research endeavors focusing on elevating reaction rates and enhancing the durability of materials involved.

2. Efficiency Enhancement:

· Noteworthy strides in technology have led to remarkable improvements in energy efficiency. The development of catalysts and the optimization of reaction conditions have contributed to heightened efficiency in the processes of hydrogen absorption and release, ultimately resulting in significant reductions in energy losses.

3. Safety Measures:

· Concurrently, significant attention is being devoted to addressing safety concerns of a technical nature. Researchers are actively engaged in exploring materials capable of withstanding the rigors of high-pressure and low-temperature conditions, thereby significantly enhancing the safety protocols associated with the handling of liquid hydrogen.

4. Recycling and Environmental Responsibility:

· It is pivotal to underscore that proactive measures are underway with regard to the recycling of used organic chemical hydrides and the development of advanced waste management techniques. These initiatives are integral in ensuring minimal environmental impact.

b. Economic Perspectives:

1. Cost Reduction Initiatives:

· Harnessing the momentum of technological advancements and the potential offered by economies of scale, concerted efforts are being made to curtail the overall cost associated with the transportation of liquid hydrogen. The reduction of facility costs and the optimization of energy expenditure are recognized as pivotal factors in achieving economic viability.

2. Competitive Edge:

· The competitive landscape of the liquid hydrogen supply market is notably fierce. However, the organic chemical hydride method demonstrates significant potential to effectively compete with alternative supply methods. Particularly in remote geographical regions and specialized applications, its inherent safety and efficiency constitute substantial competitive advantages.

3. Sustainability Considerations:

· It is imperative to acknowledge the pivotal role played by liquid hydrogen transportation in the context of sustainable energy provision. The sustainability prospects of this method are poised to be significantly bolstered if it proves to be an environmentally conscientious solution.

4. Demand-Supply Synergy:

· As the demand for liquid hydrogen experiences continued growth, the organic chemical hydride method may emerge as an enabler of precise supply tailored to meet this burgeoning demand. Consequently, it holds the potential to play a pivotal role in preserving equilibrium within the market.

In summation, the implementation of the organic chemical hydride method for the transportation of liquid hydrogen is characterized by its ongoing technological evolution and the concurrent improvement in its economic viability. Against the backdrop of a mounting demand for sustainable energy solutions, this method emerges as a promising candidate for future practical implementation. Nevertheless, it is imperative to underscore that challenges persist, underscoring the indispensable need for continued research and development endeavors. c. Conclusion: The organic chemical hydride method offers a promising approach for the safe and efficient transportation of liquid hydrogen. By leveraging organic compounds to absorb and release hydrogen gas, this method enhances the safety and feasibility of handling liquid hydrogen, making it suitable for a range of applications, including fuel cell vehicles, industrial processes, and power generation. END

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Quantum Brain Chipset & Bio Processor (BioVLSI)

Prof. PhD. Dr. Kamuro

Quantum Physicist and Brain Scientist involved in Caltech & AERI Associate Professor and Brain Scientist in Artificial Evolution Research Institute（ AERI: https://www.aeri-japan.com/ ）

IEEE-USA Fellow

American Physical Society Fellow

PhD. & Dr. Kazuto Kamuro

https://www.aeri-japan.com

email: info@aeri-japan.com

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【Keywords】　Artificial Evolution Research Institute：AERI

HP： https://www.aeri-japan.com/

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