Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： Promoting the regional demonstration of energy technology for carbon peak and carbon neutrality (referred to as “dual carbon”) is an important part of the Chinese Academy of Sciences’ action plan to support the “dual carbon” goals. This study discusses the significance of carrying out the comprehensive demonstration of “dual carbon” technology from the two dimensions of “technology integration demonstration” and “typical regional demonstration”. Besides, based on the existing research layout in the energy field of the Chinese Academy of Sciences, the idea and four mainlines are proposed for the Chinese Academy of Sciences to promote “multi-energy integration”, which are clean and efficient utilization and coupling substitution of fossil energy, multi-energy complementation and large-scale application of non-fossil energy, industrial low-carbon and zero-carbon process reengineering, and digital intelligent integration optimization, namely. Finally, combined with the work of the Dalian Institute of Chemical Physics, this study discusses the background, goals, and technical routes of the comprehensive demonstration of multi-energy fusion technology in Northern Shaanxi, Liaoning Province, and Shandong Province, respectively for researchers and decision makers.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： Energy storage is one of the important supporting technologies to achieve the “dual carbon” goals, and it is an important means to stabilize renewable energy fluctuations and reduce the impact of large-scale new energy access on the power grid. At present, the competition of global energy resources is becoming increasingly fierce, and China is also facing significant changes in the adjustment of energy structure. To implement the energy strategy of “four revolutions and one cooperation” in the new era, and to realize the “14th Five-Year Plan” as well as the “Long-range Objectives Through the Year 2035”, China needs to build a new system of energy structure with Chinese characteristics, driven by “clean, low-carbon, safe and efficient” energy resources. Achieving the complementary integration of clean energy and fossil energy is the key to building a new “clean, low-carbon, safe and efficient” energy system. The development of large-scale energy storage technology is not only a necessary measure for the low-carbon and clean power system, but also a powerful means to seize the strategic commanding heights of the international energy technology and ensure national energy security.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： This study first analyzes the driving factors of China’s realization of the “dual carbon” goals from the two aspects of necessity and urgency, and proposes that to achieve the “dual carbon” goals, China shall reshape the energy structure and related industrial systems in a scientific and orderly manner, in which technology innovation plays a crucial leading role. Then, based on the long-term research and deveopment in the energy field of the Chinese Academy of Sciences, the scientific and technological development path to lead the realization of the “dual carbon” goals with the concept of “multi-energy system integration” is proposed, and the connotation of the “multi-energy system integration” concept is elaborated into four technology development paths, including clean and efficient utilization and coupling substitution of fossil energy, multi-energy complementation and large-scale application of non-fossil energy, industrial low-carbon, and zero-carbon process reengineering,and digital, intelligent and multi-energy integration. Finally, suggestions are put forward to promote the implementation of the “multi-energy integration” technology development path.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： Scientific and technological innovation plays key supporting and leading roles to achieve “carbon peaking and carbon neutrality” goals (referred to as “dual carbon”). It is necessary to make sustained efforts in the three aspects, namely energy structure adjustment, energy consumption, and carbon sequestration, and build a novel multi-energy-integrated energy production and utilization system based on hydrogen energy, energy storage, and methanol, in which the main lines are clean and efficient utilization of fossil energy, large-scale utilization and complementation of clean energy, low-carbon reconstruction of industrial processes, and intelligent multi-energy integration of building and transportation. In 2022, the Chinese Academy of Sciences has launched the scientific and technological action plan to support dual carbon goals. By implementing eight major actions including strategic research, cross-innovation of basic frontiers, breakthroughs in key technologies, comprehensive demonstration of new technologies and other scientific and technological innovation, deploying talent team building, international cooperation, improvement of innovation system capabilities, and popular science and dissemination actions, the action plan is to provide vigorous scientific and technological support for China’s carbon peaking and carbon neutrality goals.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： The clean and efficient use of coal is of great significance to China’s energy security and environmental protection. Coal to liquids, coal to olefins and coal to glycol are the major clean coal technologies of Chinese Academy of Sciences (CAS), which have reached the international advanced level and become the innovation models in China’s energy development. To cross the gap between the laboratory and industrialization, different approaches are used to integrate social resources in transformation of scientific and technological achievements. This paper reviews the industrialization development and various situations encountered in technology transfer and transformation of these three technologies. From the existing problems and challenges, the suggestions are proposed for the next step of the technology transfer and transformation.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： Hydrogen is a clean secondary energy carrier, and hydrogen fuel cells (FC) have the advantages of high fuel energy conversion rate, low noise, and zero emission. Hydrogen is also a bridge between renewable energy and traditional fossil energy, via hydrogen fuel cells, the blueprint of clean energy utilization can be realized in the future. The major developed countries in the world have paid great attention to the development of hydrogen energy. At present, hydrogen energy and fuel cells have been initially commercialized in some sub-fields. For example, the research and commercial application development of hydrogen FC and FC vehicles are rapidly developing in Japan, the United States, and Europe, and they continues to innovate in hydrogen production, hydrogen storage, and hydrogen perfusion. China has followed the footsteps of developed countries in the world, while the imperfect hydrogen and fuel cell industrial chain leads to high cost. Therefore, it is necessary to strengthen research on key materials, realize the engineering and localization of core materials and components, establish production lines, and complete the industrial chain as soon as possible. In view of these, China has already deployed complete vehicles, systems and stacks in the industry chain, but there are still few related companies of FC parts and components, especially the most basic key materials and components, such as proton exchange membranes, carbon paper, catalysts, air compressors, hydrogen circulation pump, etc. Although some Chinese companies have involved in above products, there is still a big gap on reliability and durability compared with internationally advanced products. Most of the key components still rely on imports. Moreover, the high cost of hydrogen production and transport, the imperfect infrastructure such as hydrogen refueling stations, and unsound technical standards and testing systems all limit the development of FC vehicles. To develop FC vehicles in China, we should accelerate the construction of hydrogen refueling stations drived by commercial vehicles in order to reduce the cost of hydrogen and FCs. We should also exploit the hydrogen FC vehicle industry cluster, and promote the development of the entire industry chain. In terms of safeguard measures and policy requirements, it is necessary to strengthen the top-level design, comprehensively depict the development path of hydrogen fuel cells; increase research investment to ensure that the core technologies are independently controllable; coordinate the industrial layout, guide the harmonious development of the industry chain; strengthen the formulation of standards to support the technological progress and industrial development. This paper analyzed Chinese and international industry chain structure and the development status of hydrogen energy and FCs. The development status and problems of Chinese hydrogen energy and FCs has been analyzed from two aspects of industrialization and technology. Also proposed is that the development suggestions of hydrogen energy and FCs based on the technology and industry characteristics. The development of hydrogen energy and fuel cells in China has also been prospected.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： Energy storage technology plays a central role in renewable energy integration, microgrid, power grid peaking and efficiency improvement, regional energy supply, electric vehicles and other applications. It is vital to solve issues of energy resources and energy security, to implement energy conservation and emission reduction, and to promote a green and low carbon world. The strategic need for carbon development has played a key role in the energy revolution. This article mainly introduces electrochemical energy storage technologies with important market prospects, including flow batteries, lithium-ion batteries, lead-carbon batteries, and sodium-based battery technologies. Based on the analysis of the development status of electrochemical energy storage technologies, China’s future development strategy is elaborated in the paper as well.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： Petrochemical industry has been evolved in China for decades as the domestic economics and markets develop. Lack of oil reserves, together with the rapid increase of the demand of liquid fuel and chemicals, leads to the risky and uncontrollable supply of the oil feedstock and meantime hinders the optimization of the structure of China’s chemical products. Coal to chemicals, after more than 30 years’ research and development, is becoming an effective and significant approach to produce basic chemicals such as olefins and aromatics. In view of the relatively abundant coal reserves in China, it is essential to develop coal chemical industries, which can be considered as a complement to petrochemical industries at either the strategical level to produce olefins, aromatics, and ethanol, or at the technical level to directly co-feed methanol with naphtha or toluene for on-purpose production. This opens a potential way for the coordinated development of coal chemical and petrochemical industries in China.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： China is short of oil and natural gas resources and relatively rich in coal reserves. For a long time to come, coal will be still at the dominant position in the energy consumption structure in China. Clean and efficient utilization of coal is the main content of energy production and consumption revolution. It not only is an important way of clean and efficient utilization of coal, but also has a great significance to national energy security, sustainable economic and social development. The article analyzes the research status of coal clean and efficient conversion related technologies worldwide, as well as the layout of China’s efficient coal conversion, the research direction, and the development trend, in order to technologically support the improvement of clean and efficient conversion level of coal and the acceleration of energy consumption revolution in China.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： Energy is the material basis for the survival and development of a country. Sustainable high-quality development of the economic society with the green transformation of energy resources is a long-term and tough task. The construction of clean, lowcarbon, safe and highly efficient energy system is an important strategic goal putting forward by the government for the future energy development of China, while technological innovation is the key to such goal. Based on the analysis of Chinese energy development status, major problems and great challenges, combining with global energy development trends, this study proposed a new idea on the development strategy of energy technology of China, the main line of which is the clean and efficient use of fossil resources and coupling substitution, multi-energy complementarity and scale application of clean energy, and the low-carbon multi-energy strategic integration.
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