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RSS2024 Vol. 11, No. 5
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2024, 11(5): 1-14.
doi: 10.16516/j.ceec.2024.5.01
Abstract:
Introduction Carbon utilization technologies, which convert CO2 into valuable products such as fuels, chemicals, and building materials, represent an innovative approach to mitigating climate change and promoting resource recycling. The analysis of climate benefits and economic viability is a significant challenge in current research on carbon utilization technologies and is key to their development and implementation. Method This study developed a methodology for quantifying the emission abatement benefits and economic viability of carbon utilization technologies, based on background analysis, baseline selection, boundary definition, and indicator calculation. Using this methodology, key indicators such as emission abatement per unit, levelized cost of emission abatement, and abatement benefit per unit for four typical CO2 utilization technologies were analyzed. Result The study shows that CO2 enhanced oil recovery (CO2-EOR) achieves a unit emission abatement of 1.62～5.85 t CO2/t oil. When the price per barrel of oil is around 390 yuan, the abatement benefit for CO2-EOR varies from 2 to 1152 yuan/t CO2 under different injection-production ratios. The CO2 and green hydrogen-based methanol production achieves a unit emission abatement of 4.89 t CO2/t methanol, with a negative abatement benefit, requiring subsidies or equivalent carbon pricing support of 18 to 833 yuan/t CO2 to break even on abatement. The carbon capture and utilization of steel slag for building material production yields a unit emission abatement of 0.94 t CO2/t steel slag powder, with an abatement benefit of 36 to 164 yuan/t CO2. The microalgae cultivation for biodiesel production achieves a unit emission abatement of 0.36 t CO2/t algae powder, and the abatement benefit can reach 30,000 to 90,000 yuan/t CO2. Beyond the key indicators emphasized in this paper, actual project decisions must also consider the impact of technological stability, market environment, and resource conditions on economic feasibility. Conclusion The carbon abatement effectiveness and applicability of different carbon utilization technologies vary across different scenarios. To ensure their positive contribution to emission abatement, it is necessary to improve institutional frameworks, facilitate the integration of these technologies into carbon markets, and assess their actual climate impact, thereby supporting technologies that provide genuine climate benefits.
2024, 11(5): 15-25.
doi: 10.16516/j.ceec.2024.5.02
Abstract:
Introduction This paper aims to explore the development status, application cases, and economic evaluation of direct air capture (DAC) technology in the context of carbon neutrality, thus providing references for achieving carbon emission reduction targets in China. Method This paper reviewed the working principles, types, and application cases of DAC technology and analyzed its development status both at home and abroad. By comparing cost data from different studies, it assessed the economy of DAC technology and discussed current challenges and potential solutions. Result The study finds that DAC technology effectively captures CO2 from the air and offers advantages such as flexibility in deployment and compatibility with renewable energy. However, its commercialization is still constrained by high costs, high energy consumption, and technical challenges related to large-scale deployment. Case analysis at home and abroad reveal the urgent need to address the efficiency and cost issues in practical applications, while also showing potential for optimization through technological improvements and policy support. Conclusion Despite the existing challenges, DAC technology remains a potential reserve technology for achieving carbon neutrality goals, especially for countries facing severe carbon reduction pressures like China. Research efforts should focus on developing more efficient and low-cost absorbents and adsorbents, improving system design, reducing energy consumption, and exploring combination with renewable energy sources. Government policy support and broad social acceptance are also key factors for the commercialization of DAC technology. These measures can drive the development and application of DAC technology, contributing to both carbon emission reduction and environmental protection goals.
2024, 11(5): 26-36.
doi: 10.16516/j.ceec.2024.5.03
Abstract:
Introduction The green and low-carbon transformation and industrial restructuring under the premise of energy security is a serious challenge faced by Zhejiang Province to achieve its "carbon peaking and carbon neutrality" goals. Given the high proportion of coal-fired power generation in Zhejiang, carbon capture, utilization and storage (CCUS) technology, as an important choice to realize the low-carbon utilization of fossil energy, is vital to the "double carbon" technology system in the energy sector and industrial circle of the province. Method This paper presents a research review of CCUS technology from multiple aspects, including CO2 capture, transportation, utilization and storage, and introduces the development of CCUS demonstration projects in Zhejiang. This study summarizes the features of the major technologies throughout the full CCUS chain, and briefly analyzes the existing challenges amid the ongoing technological advancements. Besides, the prospect of CCUS technology in Zhejiang is explored along with corresponding suggestions. Result Zhejiang boasts a solid technical foundation in the field of CCUS, especially in CO2 capture, and has numerous full-chain demonstration projects employing various process routes, including pre-combustion and post-combustion capture (CO2 capture), biological, mineral, and chemical utilization (CO2 utilization), as well as geological storage (CO2 storage). However, technology readiness level differs largely across the process chain, in addition to other challenges, such as small scale, generally high initial capital and operating costs, and dispersed spatial distribution, which hinder the development of industrial clusters. Conclusion It is important to promote CCUS integration projects to adapt to local conditions, based on a thorough understanding of Zhejiang's potential and source/sink conditions related to CCUS in key areas. Additionally, continuous investment in technological research and development is necessary, along with guarantees in terms of incentive mechanisms, policies, regulations, and business models.
2024, 11(5): 37-49.
doi: 10.16516/j.ceec.2024.5.04
Abstract:
Introduction As an important carbon capture method in CCUS, pressure swing adsorption (PSA) CO2 capture technology has been widely used. However, the excessive capture energy consumption and operation cost restrict the promotion and implementation of the technology. How to accurately select the appropriate capture technology according to the actual situation and reduce the capture energy consumption is particularly important. Method This paper discussed the basic research and technical application of PSA technology at home and abroad, and analyzed the economy and prospect of PSA technology in petrochemical industry based on a practical application case of PSA technology for CO2 capture in a petrochemical enterprise. Result In this case, the project using PSA CO2 capture technology captured and stored about 800000 tons of medium-concentration carbon sources produced by the purification unit and low-temperature methanol washing unit of the coal-to-hydrogen plant. For 73.9% concentration of CO2 raw gas, the device achieved 96% CO2 recovery rate and 98% capture purity. H2S, CH4 and CH3OH are all controlled below 0.015%, which can achieve about 56 kWh/t CO2 capture power consumption. It is found that pressure swing adsorption technology has the advantages of low energy consumption, low piezoresistivity, continuous process and strong stability of adsorbent, which shows the technical and economic feasibility. Since pressure swing adsorption is mainly physical adsorption, PSA may face the problem of high energy consumption and insufficient enrichment concentration for the treatment of low concentration of CO2 feed gas. Conclusion In summary, PSA CO2 capture technology is suitable for the treatment of medium concentration carbon sources, and has potential in thetreatment of exhaust emissions in petrochemical, cement and other industries in the future.
2024, 11(5): 50-56.
doi: 10.16516/j.ceec.2024.5.05
Abstract:
Introduction Carbon dioxide capture, utilization and storage is an important measure to achieve the goal of net zero greenhouse gas emission. The synthesis of methanol by carbon dioxide hydrogenation is one of the effective ways to use carbon, which can not only convert CO2 into methanol, an valuable fuel and chemical product, but also combine with producing hydrogen by electrolytic water, making methanol become the storage carrier of hydrogen. Method The methanol producing process by carbon dioxide hydrogenation was modelled by simulation software Aspen Plus. For the methanol production scale of 300,000 t/a, the hydrogen producing by water electrolysis was considered as the hydrogen source, and the influence of temperature, pressure and CO2/H2 feed ratio on methanol yield was analyzed in detail. Result The simulation results show the methanol yield is the highest when the synthesis temperature is around 250 °C and the CO2/H2 feed ratio is 7.33. Considering the direct combination with water electrolysis process, the synthesis pressure at around 5 MPa is reasonable. The water content of hydrogen has a certain effect on the methanol yield. The methanol yield only reduces 0.1 percent with the water content increase 100 kg/h in the raw H2. Conclusion The simulation determined the selection basis of key process parameters of methanol synthesis system by carbon dioxide hydrogenation. In addition, the feasibility of directly combining H2 obtained from water electrolysis with methanol synthesis process without drying and compression treatment is proved. In conclusion, hydrogen production from renewable sources combined with methanol synthesis by carbon dioxide hydrogenation is a technology with application prospect.
2024, 11(5): 57-62.
doi: 10.16516/j.ceec.2024.5.06
Abstract:
Introduction This paper aims to deeply analyze and improve China's carbon pricing mechanism to more effectively promote the social transition to green and low-carbon, and at the same time enhance China's leadership and initiative in the process of global carbon peaking and carbon neutrality. Method By comprehensively sorting out the current situation and future trends of the global carbon pricing mechanism, this article deeply analyzed the shortcomings of China's existing carbon pricing mechanism, such as insufficient correlation with the overall climate policy goals, unclear nature of property rights in the carbon market, and inactive market entities. This paper further discussed the potential impact of rising carbon price on China's emission reduction effect and energy supply guarantee. Result Based on China's national conditions, this paper gives the strategic direction and corresponding measures to construct China's carbon pricing mechanism by using carbon market carbon quota, carbon tax, coordination between carbon market and carbon tax, and carbon finance. Conclusion On the basis of clarifying the development ideas of China's carbon pricing mechanism, it provides a countermeasure reference for China to win more voice in the international carbon pricing mechanism, such as strategies for synergizing the domestic electricity certificate and carbon markets, improving the "integrity" of China's green certificates, engaging in the promotion of mutual recognition in international carbon markets, and collaborating to establish coordinated carbon pricing mechanisms among nations.
2024, 11(5): 63-74.
doi: 10.16516/j.ceec.2024.5.07
Abstract:
Introduction The mangrove ecosystem has a high carbon sequestration capacity and is an important part of the global carbon cycle. Exploring its carbon sink potential can promote the mitigation and adaptation to climate change, providing a potential marine solution for China's carbon peak and carbon neutralization. Method In this study, the methodology of mangrove blue carbon assessment was studied to estimate the carbon reserve and carbon sink potential in Guangdong Province. The carbon reserve in mangroves in Guangdong Province was about 3 222.035 kt C, of which the carbon reverse in vegetation was about 1 094.465 kt C and the carbon reserve in soil was about 2 127.57 kt C. Among different mangrove communities, the vegetation carbon reserve of Aegiceras corniculatum was the highest, reaching 1 508.931 kt C, followed by Avicennia marina, Kandelia obovata and Sonneratia apetala, with carbon reserve of 1 508.931 kt C, 859.115 kt C, 193.296 kC and 660.693 kt C respectively. Result According to the " Special Action Plan for Mangrove Protection and Restoration (2020-2025)", by 2025, 55.00 km2 of mangroves will be planted in Guangdong Province, and the carbon sink potential can increase by 36.171 kt CO2-e ~99.891 kt CO2-e, with great carbon sink potential. Conclusion This study can provide scientific basis for the afforestation of mangrove carbon sink in Guangdong Province, and is of great significance for China's carbon peak and carbon neutrality cause.
2024, 11(5): 75-85.
doi: 10.16516/j.ceec.2024.5.08
Abstract:
Introduction Realizing peak carbon dioxide emissions before 2030 and achieving carbon neutrality before 2060 have been identified as important strategic goals for fostering high-quality economic and social development in China. Carbon sink is one of the crucial approaches to achieving carbon neutrality. Effective carbon sink incentive policies are the guarantee for achieving "carbon neutrality". Method By sorting out the development of ecosystem carbon sinks both domestically and internationally, the main problems in the development of carbon sinks in China were revealed, and a comprehensive understanding of China's carbon sink projects was established. By studying the mechanism for carbon sink projects to participate in carbon market transactions, channels for reaping benefits were clarified. Furthermore, through comparative analysis and research on pilot experiences, relevant conclusions were drawn by analyzing specific issues. Result As shown by the results, the development of carbon sink projects in China is mainly focused on forestry carbon sink, involving fewer other carbon sink projects. With middle-and-short term as the main project cycle, the growth rate of project development has slowed down. There are mainly three problems faced by China's carbon sink development: (1) the limited variety of methodologies and more limitations for developing carbon sink; (2) the long development process and imperfect mechanism; (3) the insignificant incentive effect of the carbon market after development. Conclusion The research indicates that China's future work on ecosystem carbon sink still faces huge challenges. To promote the high-quality development of carbon sinks, it remains necessary to expedite the adjustment and upgrading of carbon sink support policies, increase investment in carbon sink technology, and actively develop the “carbon sink +” industry.
2024, 11(5): 86-94.
doi: 10.16516/j.ceec.2024.5.09
Abstract:
Introduction The rapid development of new energy vehicles (NEVs) brings higher requirements for the power demand of highways. Based on the analysis of the power loads of highways, the photovoltaic endowment, and the energy storage technologies suitable for highway service areas in China, this paper explores the self-consistency of the highway transportation and energy integration mode of the PV-Storage-Charging integrated development path, and combines practical engineering project to demonstrate and analyze the feasibility of the highway transportation and energy integration mode. Method By analyzing the total mileage of highways in China, the market penetration rate of NEVs, and the PV & energy storage resources of highway transportation, based on the potential increase in highway power load due to the growth of NEVs and the utilization space of photovoltaic resources in highway transportation, a comprehensive energy utilization mode of PV-Storage-Charging for highway service areas was proposed. Combined with existing projects of self-consistent modes of transportation and energy integration, suggestions were proposed for the integrated development mode of highway PV-Storage-Charging. Result Data indicates that by 2025, the national stock of NEVs will exceed 25 million, consuming 37.5 TWh of electricity, showing tremendous potential for electricity demand. At the same time, the abundant photovoltaic resources along and around roads in China have a photovoltaic generation potential of approximately 1022.8 TW, while the calculated annual energy consumption of highway infrastructure is approximately 17.99 TW. Conclusion The main path of integration between transportation and energy should start with developing wind and photovoltaic natural resource endowments based on the infrastructure of road transportation itself, and forming a self-consistent supply of transportation energy systems, thereby constructing a distributed, green, renewable, and net zero-emission energy supply system for transportation systems. The integrated development path of PV-Storage-Charging transportation and energy integration can consume renewable energy locally, alleviate grid pressure while promoting the clean energy utilization of highways, showing immense potential. This paper can provide theoretical support and reference for the development of highway transportation and energy integration in China.
2024, 11(5): 95-104.
doi: 10.16516/j.ceec.2024.5.10
Abstract:
Introduction China's transportation sector is a significant contributor to carbon emissions. To achieve carbon peaking and neutrality, developing a new transportation-energy integrated system based on energy Internet is a crucial step for the low-carbon transition of this sector. Method Focusing on low-carbon transition, this paper provided an overview of the development goals, policy background, innovations, and insights of China's new highway transportation-energy integrated system. Result Centered on the multi-objective demand of "energy-saving transportation – economical transportation – low-carbon transportation", various transportation-energy integrated service business models has been developed for China's new highway transportation-energy integrated system, such as battery charging & switching systems, PV-storage-charging integration systems, and oil-gas-hydrogen-electricity-PV charging & storage systems. Corresponding collaborative planning and construction, operation and control, advanced energy storage, multilevel coordination of energy management, and other key technologies are also being gradually developed. However, challenges related to planning, operation and environmental protection remain. To facilitate the rapid advancement of this integrated system, efforts should focus on expanding market awareness, streamlining regulations and strengthening technical collaboration in the next stage. Conclusion This paper discussed China's new future-oriented highway transportation-energy integrated system, offering valuable perspectives on enhancing the quality development of China's transportation sector.
2024, 11(5): 105-115.
doi: 10.16516/j.ceec.2024.5.11
Abstract:
Introduction In order to achieve the strategic goal of "carbon peaking and carbon neutrality", it is imperative for the transportation industry to transition towards greening and low-carbon development. The integration of transportation and energy is one of the important technological paths to achieve the strategic goal in the transportation sector, and the investment decision-making model and business model enhance the momentum of the development of the transportation and energy integration. Method Therefore, this paper analyzed the composition of investment estimation and decision-making points, proposed economic evaluation indexes and environmental benefit indexes, constructed an investment decision-making model, and explored the business model of transportation and energy integration in terms of the development path, framework, and the conception of typical scenes. Result By analyzing the investment feasibility of typical projects of transportation and energy integration, the validity of the transportation and energy integration investment model presented in this paper is verified. Based on the classification of regions according to China's solar resource conditions, the promotion of China's transportation and energy integration model is divided into three types: single-industry integration promotion region, multi-industry integration promotion region, and industry cluster integration promotion region. The development of the business model of transportation and energy integration is divided into three stages of cultivation, upgrading and innovation, and the market positioning, investment and financing subjects and methods, operation methods and profit mechanism of different stages are analyzed, so as to summarize and form the typical scenarios of the business model at different stages, and to realize the continuous upgrading of the business model. Conclusion The investment decision-making model for transportation and energy integration proposed in this paper helps to improve the efficiency and effectiveness of investors' decision-making, and the business model helps to promote the market-oriented development of transportation and energy integration.
2024, 11(5): 116-122.
doi: 10.16516/j.ceec.2024.5.12
Abstract:
Introduction The main shafting structure with double supports of single row tapered roller bearings has been widely used in wind turbines, and determining the appropriate bearing operating clearance is crucial for the reliable operation of bearings and the main shafting. Method A dynamics analysis model was established focusing on the main shafting of a medium speed permanent magnet wind turbine, incorporating the hub, main shaft, and both upwind and downwind bearing. The variation trends of bearing raceway life, load area, and maximum contact stress under different axial clearances were calculated. Result The ideal axial operating clearance range of matched single row tapered roller bearings has been identified as −0.74 ~ −0.3 mm. Conclusion The research results have significant implications for the reliable operation of bearings and main shafting, providing a method and reference for determining the axial operating clearance of matched single row tapered roller bearings.
2024, 11(5): 123-131.
doi: 10.16516/j.ceec.2024.5.13
Abstract:
Introduction The construction process of pile insertion and removal for installing offshore wind turbines on mobile platforms is risky, which can easily affect the working performance of adjacent infrastructure, and even lead to its instability and failure. Method In order to clarify the mechanism of the influence of pile shoe insertion and removal on adjacent foundation, this paper used CEL large deformation method to simulate the insertion and removal process of similar rectangular pile shoe in homogeneous and heterogeneous clay, and focused on the analysis of the evolution mechanism of additional overturning angle caused by pile insertion process on adjacent jacket foundation; based on the simulation results of large deformation, the influence of soil softening effect on the ultimate bearing capacity of adjacent buckets after pile shoe removal was further studied by using small deformation. Result The results show that under the action of pile shoe compaction, the rotational displacement of the three-cylinder jacket foundation will take place, and it will decrease gradually with the increase of net spacing. At the same time, the soil softening caused by compaction will reduce the bearing capacity of adjacent cylinder. Conclusion The overturning angle of three-cylinder jacket in heterogeneous soil is larger and the corresponding penetration depth is deeper due to the influence of pile shoe insertion and removal. The affected area of softening area caused by pile shoe insertion and removal is larger in horizontal direction and smaller in depth direction in homogeneous clay. In homogeneous clay, the average strength loss is small, and the horizontal and angular bearing capacity loss of the three-cylinder jacket is small. In homogeneous and heterogeneous clays, the vertical bearing capacity is reduced obviously, and the maximum reduction factor can reach 0.72.
2024, 11(5): 132-139.
doi: 10.16516/j.ceec.2024.5.14
Abstract:
Introduction In order to meet the national goals of "30·60" - peak carbon emissions by 2030 and achieving carbon neutrality by 2060 , an influx of new energy sources such as wind and photovoltaic power is integrated into the system via converter interfaces and progressively supplants coal-fired synchronous generators, significantly impacting the power system's inertia characteristics and the associated frequency dynamic characteristics. Method Firstly, the study reviewed the inertia equation of motion for traditional power systems, and the power-frequency dynamic process during the inertia response phase following a disturbance in traditional generators, and then qualitatively discussed the mechanism of system inertia loss due to the extensive integration of new energy sources. Result The study considers evaluation indicators used at home and abroad for broadly recognized centralized inertia, and elucidates the reason for employing the system's total kinetic energy and inertia constant as the inertia evaluation indicators for the power grid. Conclusion Combined with the planning of new energy development and consumption of a provincial power grid, an engineering evaluation of the grid's inertia level is carried out, and the corresponding suggestions for inertia improvement are put forward.
2024, 11(5): 140-148.
doi: 10.16516/j.ceec.2024.5.15
Abstract:
Introduction Aiming at the characteristics of offshore converter station, this paper proposes the design scheme for auxiliary power system of offshore converter station. Method By analyzing the requirements for auxiliary power system at offshore converter station both at home and abroad, in combination with the construction situation and actual needs of offshore wind farms, a design scheme for the auxiliary power system at offshore converter station was proposed. Result The scheme of setting up off-site power supply for offshore converter station is proposed for the first time. A simplified wiring scheme can improve equipment utilization and conversion efficiency of auxiliary power system, and its control protection is analyzed to verify the practicality and reliability of the wiring scheme. Comparing with the scheme of low-voltage distribution system of offshore booster station, the optimization scheme of not setting emergency section bus and connecting diesel generator in parallel is proposed. Through analyzing the load characteristics of offshore converter station, the method of selecting the capacity of diesel generator, the capacity of fuel tank and the diesel generator incoming circuit breakers is proposed. Conclusion Therefore, it has been optimized while ensuring the reliability of auxiliary power system, which has strong practicality and applicability, and provides guidance for the design of auxiliary power system for offshore converter station.
2024, 11(5): 149-158.
doi: 10.16516/j.ceec.2024.5.16
Abstract:
Introduction In the face of energy scarcity and carbon reduction imperatives, the transition to clean energy centered on electricity is crucial. To achieve this, power system development must prioritize stability, automation and intelligence. Artificial intelligence (AI) technology is a key means to realize this goal. Method This paper introduced the carbon emissions of domestic and foreign power systems at first, and pointed out the difficulties and feasible solutions for low-carbon development of the power system in China on this basis. Then, the application and prospect of AI technology in power system development were discussed. Result In response to the transition to low-carbon and low-energy power systems, a series of low-carbon development routes, such as integration of capital and resources in the thermal power industry, low-carbon transition (such as the application of carbon capture technology), and promoting the consumption of and smooth replacement by clean energy, were proposed in this paper. It was also noted that AI technology will play a crucial role in automating, intelligentizing and optimizing power systems, with wide-ranging applications in power dispatching, relay protection, power equipment management, power system stability evaluation, and decision-making processes. Conclusion As third-generation AI technology continues to evolve and fourth-generation AI technology emerges, the application of AI technology in the power system will become increasingly widespread.
2024, 11(5): 159-167.
doi: 10.16516/j.ceec.2024.5.17
Abstract:
Introduction The widespread adoption of electric vehicles (EVs) enhances environmental sustainability during travel, yet it simultaneously elevates strain on the mains supply. To assess the impact of EV charging on the power grid, a specialized charging load calculation method is developed for large EV cluster on the basis of the Monte Carlo method. Method In this approach, EVs were categorized into six groups based on their usage: private EVs, electric buses, electric taxis, online ride-hailing EVs, official EVs, and logistics EVs. Typical battery performance parameters for each group were identified, and probability models were established to characterize the variability in their travel and charging patterns. By integrating group scale forecasts, daily charging schedules for each group were simulated through random sampling. Subsequently, the daily charging load for each group was calculated, culminating in the total charging load for the EV cluster through an aggregation method. Result The EV cluster in a southern province in 2030 was taken as the simulation case. Conclusion The case analysis reveals that the proposed approach can provide the daily charging load of various EV groups and the entire EV cluster. Furthermore, among all types of EVs, electric buses have the highest peak charging load at 4 639.5 MW, followed by that of private EVs (not higher than 70% of the electric buses' peak load), and electric taxis have the lowest peak charging load. The charging peak of the entire EV cluster occurs between 19:00 and 23:00 at night, and the peak load can reach 10.0927 GW.
2024, 11(5): 168-177.
doi: 10.16516/j.ceec.2024.5.18
Abstract:
Introduction With the proposal of the "carbon peaking and carbon neutrality" and the increasing scale of the carbon market, how to manage carbon assets and realize the preservation and appreciation of carbon assets has become an important issue facing the green and low-carbon development of large-scale energy enterprises. This paper summarizes and analyzes the situation faced by large-scale energy enterprises, the status quo of management mode and the construction method of management system, and puts forward relevant suggestions for large-scale energy enterprises in China on carbon asset management. Method This paper first analyzed the situation faced by energy enterprises under the background of the start of the national carbon market and the upcoming restart of the national certified voluntary emission reduction CCER, and then analyzed the cost difference between the current unified management mode and the decentralized management mode of enterprise carbon assets, and then put forward the principle of "four unification" of carbon asset management, the three-level system of "enterprise headquarters-carbon asset management company-control enterprise", and the five principles of "transaction risk control", an ecological chain of carbon asset management business was constructed by building a unified carbon asset information management platform for large energy enterprises, gradually deepening the three major business segments of data management and development, low-carbon analysis and consulting, market transactions and carbon finance. Results Through the analysis of the current situation, development status and policy requirements of energy enterprises, the optimization method of carbon asset management system and the future business development direction are clarified. Conclusion This paper summarizes the carbon asset management system and business structure of large energy enterprises under the background of carbon peaking and carbon neutrality. At present, there are still a series of problems brought by decentralized management in the management mode. It is necessary to gradually optimize the management from the top-level management, organization and implementation, capital guarantee, risk control management, talent guarantee, incentive assessment and other ways, so as to maximize the preservation and appreciation of carbon assets, and help the local region and even the whole country to carry out the "carbon peaking and carbon neutrality" work smoothly.
2024, 11(5): 178-190.
doi: 10.16516/j.ceec.2024.5.19
Abstract:
Introduction Facing the advancement of the national "carbon peaking and carbon neutrality" strategy, energy in various regions of China will develop towards low-carbon utilization based on its unique resource endowment. In order to understand the development level of low-carbon energy, it is necessary to conduct evaluation research on low-carbon energy utilization. Method This paper first analyzed the evaluation objects of energy low-carbon utilization; then classified and organized the evaluation indicators of energy low-carbon utilization. This paper sorted out and introduced the characteristics of each evaluation method and model, and explained the role of energy low-carbon utilization evaluation research. Result The evaluation objects of energy low-carbon utilization can be divided into energy system evaluation and regional energy evaluation. The evaluation indicators are summarized from three aspects: energy low-carbon indicators, energy utilization indicators and energy security indicators, and the subjective and objective weighting evaluation methods are rationally used. It is possible to more comprehensively and accurately assess and understand the situation of low-carbon energy utilization. Conclusion The current energy low-carbon utilization evaluation is usually only reflected as a part of the evaluation index system. With the development of low-carbon energy and the increase in the proportion of clean energy, the evaluation of low-carbon energy utilization will become more and more important.
Research on Carbon Emission Accounting and the "Dual Carbon" Transformation Path of Industrial Parks
2024, 11(5): 191-199.
doi: 10.16516/j.ceec.2024.5.20
Abstract:
Introduction As an important carrier of China's industrialization and urbanization, industrial parks not only provide a large amount of infrastructure and public services, but also become the main source of carbon emission in China and an important entry and focus point for achieving China's goals of carbon peaking and carbon neutrality. The paper proposes a theoretical research framework for analyzing the transfer process of carbon emission in industrial parks and optimizing the decision-making process of the "dual carbon" path, in order to achieve the refined management of carbon emission in industrial parks. Method Firstly, we analyzed the carbon emission characteristics of energy, industry, construction, transportation, and infrastructure in industrial parks, and established a carbon emission accounting model for industrial parks based on inventory analysis method. Secondly, considering the impact of factors such as gross industrial output value, industrial structure, energy structure, and energy consumption on carbon emission, we established a decomposition model of factors influencing carbon emission based on the STIRPAT method. Finally, we analyzed the mechanism and impact path of digital technology empowering green and low-carbon transformation, and proposed the optimization plan for decision-making of the "dual carbon" path. Result Taking Ganzhou economic and technological development zone in Jiangxi Province as the research object, we calculate the carbon emission and carbon emission intensity from 2020 to 2022, identify the main factors influencing the increase of carbon emission, and plan the "dual carbon" transformation path from four aspects: industrial structure, energy structure, policy system, and platform construction. Conclusion Research suggests that the proposed model can fully explore the information contained in statistical data of industrial parks and is scientific and effective, providing theoretical support for the decision-making of "dual carbon" transformation path and the construction of industrial internet platform for digital carbon management of industrial parks.
