Research on Low-Carbon Optimization Model of Power System Driven by Carbon Capture and Ladder Electricity Price

Coal-fired power plants are by far the largest single source of carbon emissions in the country, and in the context of the "two-carbon" target, it is urgent to reduce carbon emissions from coal-fired power plants. At present, CCUS (Carbon capture, Storage and utilization) technology is the only technology that can reduce carbon dioxide emissions of coal-fired power plants on a large scale. At present, the commonly used technology is to install carbon capture devices on the basis of traditional coal-fired power stations to form carbon capture power plants. However, the introduction of carbon capture devices will affect the operation of power plants and peak load control ability. Based on the analysis of the basic principles of different carbon capture technologies, this paper selects a suitable carbon capture scheme based on a typical coal-fired power plant in China. By constructing the simulation models of conventional coal-fired thermal power units and carbon capture power plants, the operation interval of carbon capture power plants is obtained. Meanwhile, the peak regulating performance of power plants installed with carbon capture devices and its influence on the peak regulating capacity of power grids are analyzed.

Post combustion carbon capture from diesel engine exhaust using phase change solvents with absorption technique

With the proposal of the dual carbon goals, carbon capture and power-to-gas technologies present vast application prospects in carbon emission reduction and wind energy utilization. However, research on the impact of these technologies on carbon emission flows within power systems has been limited. This study investigates the changes in carbon emission flows in power systems incorporating carbon capture and power-to-gas technologies from the perspective of the attribution and allocation of carbon emissions. Firstly, the theoretical relationship between power flow and carbon emission flow is used to calculate the node carbon intensity, followed by the deployment of carbon capture and power-to-gas equipment. Next, the carbon emission flow in the power system is reasonably allocated to the load side based on the attribution and allocation of the carbon emissions method. In contrast, the carbon emission flow caused by active power losses is allocated to the source side. Finally, the changes in the carbon emission flow rate of generator units, load, and network loss are analyzed after introducing carbon capture and power-to-gas technologies. The results indicate that the attribution and allocation of carbon emissions method can reasonably delineate the carbon emission responsibilities of various segments within the power system, thereby promoting clean energy development.

Integrated energy system (IES) is an ideal method to improve the energy utilization efficiency and cut down the emission of CO2. In this paper, different carbon trading mechanisms are applied to study the advantage of ladder-type carbon trading mechanism. Numerical results show its advancement in carbon emission reduction. Then, generators with different capacity and carbon emission intensity are transformed into carbon capture devices respectively to study the influence of carbon capture in low-carbon economic operation of IES. Results show that generators with large capacity and low carbon emission intensity are more suitable to be transformed into carbon capture device.

The last decade has seen a signifi cant increase in the research and development of CO 2 capture and storage (CCS) technology. CCS is now considered to be one of the key options for climate change mitigation. This perspective provides a brief summary of the state of the art regarding CCS development and discusses the implications for the further development of CCS, particularly with respect to climate change policy. The aim is to provide general perspectives on CCS, although examples used to illustrate the prospects for CCS are mainly taken from Europe. The rationale for developing CCS should be the over-abundance of fossil fuel reserves (and resources) in a climate change context. However, CCS will only be implemented if society is willing to attach a suffi ciently high price to CO 2 emissions. Although arguments have been put forward both in favor and against CCS, the author of this perspective argues that the most important outcome from the successful commercialization of CCS will be that fossil-fuel-dependent economies will fi nd it easier to comply with stringent greenhouse gas (GHG) reduction targets. In contrast, failure to implement CCS will require that the global community agrees almost immediately to start phasing out the use of fossil fuels; such an agreement seems more unrealistic than reaching a global agreement on stringent GHG reductions. Thus, in the near term, it is crucial to initiate demonstration projects, such as those supported by the EU. If this is not done, there is a risk that the introduction of CCS will be signifi cantly delayed. Among the stakeholders in CCS technologies (R&D actors in industry and academia), the year 2020 is typically considered to be the year in which CCS will be commercially available. Considering the lead times for CCS development and the slow pace of implementation of climate policy (post-Copenhagen), the target year of 2020 seems rather optimistic.

Assessing the carbon emission reduction effect of flexibility option for integrating variable renewable energy

A bi-objective low-carbon economic scheduling method for cogeneration system considering carbon capture and demand response

Carbon dioxide (CO2) emitted into the atmosphere by fossil fuel combustion is the most significant greenhouse gas contributing to climate change. Use of coal alone accounts for 43% of global CO2 emission in 2010. As the most abundant, the most reliable and cheap energy source, coal will continue to play a significant role in the world’s economy and improving people’s standard of living in particular in the developing countries. With the strong demand for coal, there is no doubt that the CO2 emissions will continue to rise. On May 9, 2013, the daily mean concentration of carbon dioxide in the atmosphere of Mauna Loa, Hawaii, surpassed 400 ppm for the first time since measurements began in 1958. The rate of increase is ca 2.1 ppm per year during the last 10 years. Without significant reduction of CO2 emissions, it is unlikely to limit the long-term concentration of greenhouse gasses to 450 ppm CO2 by 2050. Carbon capture and storage (CCS) is a process CO2 is separated from large point sources, including fossil fuel power plants, and transported to a disposal site, normally an underground geological formation, for permanent storage. It is generally agreed that CCS is the only technology available to make deep cuts in greenhouse gas emissions while still using fossil fuels and much of today’s energy infrastructure. According to the International Energy Agency (IEA), CCS will account for 19% of total emissions reduction if the global CO2 emissions are halved by 2050. However, looking back, there has been great uncertainty surrounding the commercial implementation of CCS technologies. Despite the fact that all the necessary components of CCS process are commercially available, the question about the large scale CO2 storage remains. The progress towards the commercial deployment of CCS technologies is slow. A number of factors contribute to a slow progress of CCS development. Firstly, the CCS projects are very costly. Most studies estimate that CCS will add more than 50% to the cost of electricity from coal. The costs for the first commercial CCS plants will be much higher than the following projects. No one wants to take the risk to be the first one. Secondly, CCS depends on the political polices to drive it. There is no a legally binding agreement on the emissions reduction applied to all countries and there is no market for CCS. Last but not the least, CCS depends on the government support. In an unfavourably financial environment, the R & D spending is expected to decline. Recently Australian government has announced a budget cut of $500 million over three years to its national CCS flagship program, almost one third of the total funding from the federal government. The Australia’s opposition party has even pledged to abolish the carbon tax if elected in September 2013. So, what is the future for CCS? It is a difficult question to answer. A critical issue is who is going to pay for the development of CCS. It should be pointed out that the majority of the upcoming projects use captured CO2 for enhanced oil recovery. The reason for that is EOR can facilitate the development of CCS by improving the financial viability of the CCS, building the infrastructure required for CCS, and developing capability along the supply chain. An increase in EOR projects reflexes the importance of CO2 utilisation. Carbon Capture, Utilisation and Storage (CCUS) is gaining increased attention in particular in USA and China. It is unlikely for the developing counties to deploy the CCS technologies with financial support from the government alone. In these countries the priorities are to sustain the economic growth and improve people’s living standard. To move CCS forward, it is important to realise the challenges facing the CCS development and make appropriate adjustment based on the political and economic realities. Considering that the funding on the development of CCS is limited, the international R & D program needs to be well coordinated and have the right focus and the right scale to avoid unproductive overlap between demonstration projects and ensure that limited resources are spent wisely to achieve the highest benefits. As a researcher working on CO2 capture, I am glad to

Integrating carbon capture and storage (CCS) technology into an integrated energy system (IES) can reduce its carbon emissions and enhance its low-carbon performance. However, the full CCS of flue gas displays a strong coupling between lean and rich liquor as carbon dioxide liquid absorbents. Its integration into IESs with a high penetration level of renewables results in insufficient flexibility and renewable curtailment. In addition, integrating split-flow CCS of flue gas facilitates a short capture time, giving priority to renewable energy. To address these limitations, this paper develops a carbon capture, utilization, and storage (CCUS) method, into which storage tanks for lean and rich liquor and a two-stage power-to-gas (P2G) system with multiple utilizations of hydrogen including a fuel cell and a hydrogen-blended CHP unit are introduced. The CCUS is integrated into an IES to build an electricity–heat–hydrogen–gas IES. Accordingly, a deep low-carbon economic optimization strategy for this IES, which considers stepwise carbon trading, coal consumption, renewable curtailment penalties, and gas purchasing costs, is proposed. The effects of CCUS, the two-stage P2G system, and stepwise carbon trading on the performance of this IES are analyzed through a case-comparative analysis. The results show that the proposed method allows for a significant reduction in both carbon emissions and total operational costs. It outperforms the IES without CCUS with an 8.8% cost reduction and a 70.11% reduction in carbon emissions. Compared to the IES integrating full CCS, the proposed method yields reductions of 6.5% in costs and 24.7% in emissions. Furthermore, the addition of a two-stage P2G system with multiple utilizations of hydrogen further amplifies these benefits, cutting costs by 13.97% and emissions by 12.32%. In addition, integrating CCUS into IESs enables the full consumption of renewables and expands hydrogen utilization, and the renewable consumption proportion in IESs can reach 69.23%.

Rapid industrialization and urbanization in the 20th century have led to increasing volumes of carbon dioxide being released into the atmosphere[...]

The carbon footprint and cost of coal-based hydrogen production with and without carbon capture and storage technology in China

<p>Further to Kyoto Protocol, again in 2009 G-20 Pittsburg Summit, Indonesia delivered the commitment on reducing 26% on its emission level. Moreover, as non-annex 1 country, Indonesia shows strong and bold commitment in supporting reduction on increased concentrations of greenhouse gases produced by human activities such as burning the fossil fuels and deforestation. From the energy sector, Carbon Capture and Storage (CCS) is known as a process of capturing waste carbon dioxide (CO2) from large point sources and depositing it normally at an underground geological formation. CCS becomes now as one of the possible supports to the country commitment. In Indonesia, the potential of CCS applications could be conducted in the gas fields with high content of CO2 and in almost depleted oil fields (by applying CO2-Enchanced Oil Recovery (EOR) The CCS approach could also be conducted in order to increase hydrocarbon production, and at the same time the produced CO2 will be injected and storage it back to the earth. Thus, CCS is a mitigation process in enhancing carbon emission reduction caused by green house effect from production hydrocarbon fields.</p><p>This paper will show a proposed milestone on CCS Research roadmap, as steps to be taken in reaching the objective. The milestone consists of the study for identifying potential CO2 sources, evaluating CO2 storage sites, detail study related to CO2 storage selection, CO2 injection, and CO2 injection monitoring. Through these five steps, one can expect to be able to comprehend road map of CCS Research. Through this research milestone, applications of CCS should also be conducted based on the regulatory coverage milestone. From this paper, it is hoped that one can understand the upstream activities starting with research milestone to the very end downstream activities regarding to the regulation coverage bound. </p><p><em><strong>Keywords</strong></em>: CCS, reduction of carbon emission, regulation umbrella </p>

Accelerating Carbon Capture and Sequestration Projects: Analysis and Comparison of Policy Approaches

To accelerate the low-carbon transformation of the power industry, a range of carbon emission reduction policies and technologies have emerged. However, the current China's carbon emissions trading (CET) policy is inadequate in encouraging power generation enterprises to take proactive measures towards emission reduction due to challenges like fixed and low carbon prices. The high proportion of renewable energy in electricity consumption also faces significant challenges due to the unpredictable nature of wind and PV energy. Therefore, this paper applies stepped CET mechanism, energy storage system (ES) system and carbon capture and storage (CCS) mechanism together to hybrid renewable energy system, aiming to study their synergistic carbon emission reduction effect. Firstly, the paper constructs the stepped CET model considering incentives and penalties. Secondly, the stepped CET model, ES system and CCS are jointly introduced into the hybrid renewable energy system. Finally, a scenario analysis is conducted to investigate the synergistic effect of various carbon emissions reduction policies and technologies in the operation of power generation systems. The results show that: i) compared with traditional CET, the stepped CET increases renewable energy consumption by 0.12% and reduces carbon emissions by 0.6%; ii) the introduction of stepped CET and ES equipment together consumes an additional 36.1% of renewable energy and reduces carbon emissions by 32.4%; iii) based on stepped CET model and ES equipment, the introduction of CCS system reduces carbon emissions by 29.4%.

Carbon capture and storage (CCS) facilities coupled to clean coal plants provide a climate change and reducing the Co2 (carbon dioxide) emission .The application of Carbon Capture and Storage (CCS) in the generating electricity is important for reducing the cost electricity and consumer bills. This paper represents new ways to categorize the options for mitigation of cost and consumer bills and Co2 emissions. A detailed description on the ways to Carbon Capture and Storage in the coal fired plant, the power industry, capture, transport and store Co2 has been presented. The power penalties and cost can be big Challenges to apply CCS to the generating electricity while a lot of opportunities exist such as the development of the carbon trade market and industrial utilization of Co2. Carbon Capture and Storage (CCS) connected to clean coal power plants, plays an important role in reducing carbon emission and provide an environmental change. This paper represents a new ways for climate protection, environmental effects, environmental benefits, efficiency benefits, environmental effects and energy analyses in a carbon capture and storage. The power industry, capture, transport and store CO2 has already been presented in the field of carbon capture and storage in coal fired power plant.