Comparative life cycle energy consumption, carbon emissions and economic costs of hydrogen production from coke oven gas and coal gasification

Li, Junjie; Cheng, Wanjing

doi:10.1016/j.ijhydene.2020.07.079

Cited by 144 publications

(32 citation statements)

References 55 publications

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“…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]. Storage systems also include many routes, of which the most common storage systems are: as a compressed gas in high-pressure gas cylinders; as a liquid in cryogenic tanks; as a solid by reacting with metals or chemical compounds or being stored in an alternative chemical form.…”

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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“…The H 2 production from coke oven gas usually adopts an adsorption separation process [2]. Due to the high boiling point of C 5-6 saturated hydrocarbons, naphthalene, inorganic sulfur, tar, etc., it is difficult to desorb at room temperature after being adsorbed on the adsorbent.…”

Section: Coal Coking Hydrogen Productionmentioning

confidence: 99%

“…Figure 3. The scheme of the COGH process [2] COGH now has a high degree of feasibility in hydrogen production [2]. The use of clean coal gasification technology can produce clean energy.…”

Section: Coal Coking Hydrogen Productionmentioning

confidence: 99%

Analysis of several main hydrogen production technologies

2022

IOP Conf. Ser.: Earth Environ. Sci.

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With economic development, social progress, and population growth, mankind’s demand for energy increases. Fossil fuels such as coal, oil, and natural gas are accelerating consumption, and these fossil fuels are non-renewable, and their reserves are very limited. If we continue to use fossil fuels uncontrollably, it will inevitably cause acid rain and global warming. As a renewable energy source, hydrogen energy has the least environmental pollution, and hydrogen energy can be dispersed in large quantities and converted from renewable energy. At present, hydrogen production technology and cost are high. This article briefly explains the principles and advantages, and disadvantages of several hydrogen production technologies, etc., and the cost and work efficiency of various technologies. Studies have shown that biomass pyrolysis and photocatalytic hydrogen production have higher efficiency and lower cost, which can be used as future research directions. However, there are problems such as the unclear hydrogen production mechanism of biological pyrolysis and unstable solar energy. And its future research and development directions are discussed in more detail. The research on hydrogen production technology is to satisfy the requirements of national economic development and social development needs.

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“…Coal is a chemically complex and highly variable substance, which can be converted into a variety of products. The gasification process of coal is one method to produce power, liquid fuels, chemicals, and hydrogen [46]. Specifically, hydrogen is produced by first reacting coal with oxygen and steam-under high pressures and temperatures-to form synthesis gas (a mixture consisting primarily of carbon monoxide and hydrogen), like is shown in Equation (2).…”

Section: Coal Gasificationmentioning

confidence: 99%

Recent Developments on Hydrogen Production Technologies: State-of-the-Art Review with a Focus on Green-Electrolysis

2021

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Growing human activity has led to a critical rise in global energy consumption; since the current main sources of energy production are still fossil fuels, this is an industry linked to the generation of harmful byproducts that contribute to environmental deterioration and climate change. One pivotal element with the potential to take over fossil fuels as a global energy vector is renewable hydrogen; but, for this to happen, reliable solutions must be developed for its carbon-free production. The objective of this study was to perform a comprehensive review on several hydrogen production technologies, mainly focusing on water splitting by green-electrolysis, integrated on hydrogen’s value chain. The review further deepened into three leading electrolysis methods, depending on the type of electrolyzer used—alkaline, proton-exchange membrane, and solid oxide—assessing their characteristics, advantages, and disadvantages. Based on the conclusions of this study, further developments in applications like the efficient production of renewable hydrogen will require the consideration of other types of electrolysis (like microbial cells), other sets of materials such as in anion-exchange membrane water electrolysis, and even the use of artificial intelligence and neural networks to help design, plan, and control the operation of these new types of systems.

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Comparative life cycle energy consumption, carbon emissions and economic costs of hydrogen production from coke oven gas and coal gasification

Cited by 144 publications

References 55 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

Analysis of several main hydrogen production technologies

Recent Developments on Hydrogen Production Technologies: State-of-the-Art Review with a Focus on Green-Electrolysis

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