Research and Development of Supercritical Carbon Dioxide Coal-Fired Power Systems

Li, Zhaozhi; Liu, Xuejiao; Shao, Yingjuan; Wang, Zhong

doi:10.1007/s11630-020-1282-6

Cited by 32 publications

(11 citation statements)

References 85 publications

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“…Carbon dioxide contributes approximately three-quarters of greenhouse gas emissions, which are primarily caused by energy production and industrial processes. Approximately 40% of all electricity is generated by coal-fired thermal power plants, and 30% of carbon dioxide emissions globally arise from coal-fired plants [1,2]. Thus, decarbonization of fossil fuel-powered power generation is an urgent task for the next two decades, see Fig.…”

Section: The Challenges In Carbon Neutrality Of Our Energy Systemsmentioning

confidence: 99%

Calcium-looping based energy conversion and storage for carbon neutrality –the way forward

Dou

Wang

et al. 2022

Carb Neutrality

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With the global ambition of moving towards carbon neutrality, this sets to increase significantly with most of the energy sources from renewables. As a result, cost-effective and resource efficient energy conversion and storage will have a great role to play in energy decarbonization. This review focuses on the most recent developments of one of the most promising energy conversion and storage technologies – the calcium-looping. It includes the basics and barriers of calcium-looping beyond CO2 capture and storage (CCS) and technological solutions to address the associated challenges from material to system. Specifically, this paper discusses the flexibility of calcium-looping in the context of CO2 capture, combined with the use of H2-rich fuel gas conversion and thermochemical heat storage. To take advantage of calcium-looping based energy integrated utilization of CCS (EIUCCS) in carbon neutral power generation, multiple-scale process innovations will be required, starting from the material level and extending to the system level.

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Section: The Challenges In Carbon Neutrality Of Our Energy Systemsmentioning

confidence: 99%

Calcium-looping based energy conversion and storage for carbon neutrality –the way forward

Dou

Wang

et al. 2022

Carb Neutrality

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“…China's coal-fired power plants use 90μm and 200μm sieves for screening, that is, R 90 and R 200 are used to represent the size of pulverized coal particles. The uniformity index of pulverized coal particles can be calculated by the following formula: (1) In FLUENT, the particle size of pulverized coal is determined by the maximum particle size, the minimum particle size and the mean particle size. In this simulation, the particle size of pulverized coal under three operating conditions is adopted, as shown in Table 2.…”

Section: Pulverized Coal Particle Size Settingsmentioning

confidence: 99%

“…Coal is internationally primary energy because of its large supply and low cost [1] . In the past 30 years, China has continued its coal based energy structure [2] .…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation study on the influence of pulverized coal particle size on boiler combustion characteristics

Cheng

Zhang

2020

E3S Web Conf.

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The influence of pulverized coal particle size on combustion and NOx formation of 660MW tangential combustion ultra-supercritical boiler in a power plant was studied by using commercial software FLUENT. The average particle size of pulverized coal was set at 61μm, 71μm and 80μm, respectively. The results show that with the decrease of pulverized coal particle size, the overall temperature level of the boiler increases, the average temperature of the main combustion zone increases, the temperature of the upper part of the main combustion zone decreases, and the combustion of pulverized coal is more incomplete. However, the probability of particles sticking to the wall and the probability of coking and slagging of the boiler increases. The amount of NOx produced in the main combustion zone decreases, while the amount of NOx produced in the upper part of the main combustion zone increases, while the overall amount of NOx produced increases slightly.

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“…The combined system coupling sCO 2 Brayton cycle and refrigeration cycle could simultaneously produce power and cooling, exhibits great potential in green buildings, waste heat recovery, and industrial power supply (Wu C. et al, 2020;Khanmohammadi et al, 2020;Du et al, 2022). The sCO 2 cycle power generation system has high efficiency in a certain temperature range (Crespi et al, 2017;Li et al, 2020) and has advantages such as a small size, compact structure and so on (Ahn et al, 2015;Liao et al, 2019;Wu P. et al, 2020). It is a novel power generation technology that is currently a crucial research topic worldwide.…”

Section: Introductionmentioning

confidence: 99%

Supercritical Carbon Dioxide Turbine Design and Arrangement Optimization

Bian²,

Li³

et al. 2022

Front. Energy Res.

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To achieve a supercritical CO2 cycle power generation system, a 25 MW supercritical CO2 turbine rotor and cylinder were designed. Then, two compact arrangement schemes were proposed in this paper for the optimization of a supercritical CO2 turbine rotor. In Scheme 1, the balance piston was arranged in the cooling gas section, which was more conducive to the arrangement of the dry gas seal. In Scheme II, the oil bearing was replaced by the gas bearing, and the dry gas seals at both ends of the turbine were installed outside the gas bearing, which was combined with the cooling gas section. The results suggest that the length of the rotor is reduced by 9% and 17% based on the above two schemes. The compact arrangement of the supercritical CO2 turbine can well reduce the shaft length of the turbine, which is beneficial to the structural design and operation of the supercritical CO2 turbine.

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Research and Development of Supercritical Carbon Dioxide Coal-Fired Power Systems

Cited by 32 publications

References 85 publications

Calcium-looping based energy conversion and storage for carbon neutrality –the way forward

Calcium-looping based energy conversion and storage for carbon neutrality –the way forward

Numerical simulation study on the influence of pulverized coal particle size on boiler combustion characteristics

Supercritical Carbon Dioxide Turbine Design and Arrangement Optimization

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