Novel system integrations of 1000 MW coal-fired power plant retrofitted with solar energy and CO2 capture system

Zhai, Rongrong; Qi, Jiawei; Zhu, Yong; Zhao, Miaomiao; Yang, Yongping

doi:10.1016/j.applthermaleng.2017.07.093

Cited by 35 publications

(5 citation statements)

References 25 publications

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“…That is why, all possible alternatives must be considered to reduce the greenhouse emissions but maintaining an adequate level of power generation to ensure that society’s requirements continue to be satisfied. Analyzing carbon capture processes has been an important strategy for achieving these goals (Pacala and Socolow 2004 ; Desideri and Antonelli 2014 ; Zhai et al 2017 ). However, further research is needed to make the coupling of power plants and carbon capture processes sustainable via methods such as thermal integration, environmental analysis, safety analysis, and optimization (Gingerich and Mauter 2018 ).…”

Section: Introductionmentioning

confidence: 99%

Thermal integration of different compression-train configurations for coal-fired power plant with carbon capture

Esquivel-Patiño

Nápoles‐Rivera

2021

Clean Techn Environ Policy

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Graphic abstract Different compression-train configurations in a coal-fired power plant with CO 2 capture were thermally integrated to reduce the energetic impact of the capture process and global warming potential for the life cycle of the power plant and the production of the absorbent. The thermal integration was performed using formal optimization techniques, with consideration given to all the available streams for the different compression-train configurations. The different compression-train configurations produced different temperature levels in the process streams and different heat exchanger networks, which included the power plant, compression train, and waste energy recovery technologies, such as organic Rankine cycles. The initial observation was that for the different configurations of the compression trains, the best result in terms of the net power output was 374.26 MW e , with a reduction of 84.3% in the global warming potential compared with a power plant without carbon capture. This result was obtained for an eight-stage train with integrally geared centrifugal compressors. Subsequently, with thermal integration, the configuration that included advanced supersonic shockwave compressors exhibited the best conditions for the heat transfer between hot and cold streams, achieving a reduction of 84.65% in the global warming potential and a net power output of 382.9 MW e .

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Section: Introductionmentioning

confidence: 99%

Thermal integration of different compression-train configurations for coal-fired power plant with carbon capture

Esquivel-Patiño

Nápoles‐Rivera

2021

Clean Techn Environ Policy

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“…Coal-fired power generation faces great pressure in energy saving and greenhouse gas mitigation [1]. In recent years, solar-aided power generation (SAPG) systems have been attracting more attention [2].…”

Section: Introductionmentioning

confidence: 99%

Research on the Performance of Solar Aided Power Generation System Based on Annular Fresnel Solar Concentrator

et al. 2021

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A solar-aided power generation (SAPG) system effectively promotes the high efficiency and low cost utilization of solar energy. In this paper, the SAPG system is represented by conventional coal-fired units and an annular Fresnel solar concentrator (AFSC) system. The annular Fresnel solar concentrator system is adopted to generate solar steam to replace the extraction steam of the turbine. According to the steam–water matrix equation and improved Flugel formula, the variable conditions simulation and analysis of the thermo-economic index were proposed by Matlab. Furthermore, in order to obtain the range of small disturbance, the method of partial replacement is used, that is, the extraction steam of the turbine is replaced from 0 to 100% with a step size of 20%. In this work, a SAPG system is proposed and its thermo-economic index and small disturbance scope are analyzed. The results show that the SAPG system is energy-saving, and the application scope of small disturbance is related to the quantity of the extraction steam and evaluation index.

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“…Hong et al analyzed the typical thermodynamic performance of a 330 MW solar‐hybrid coal‐fired power plant under a partial load . Zhai conducted comprehensive system analysis, including exergetic and parametric studies, evaluation methods, economics, and improved optimization research . At present, many researchers have carried out fruitful work on the characteristics and economics of SAPG.…”

Section: Introductionmentioning

confidence: 99%

“…13,14 Zhai conducted comprehensive system analysis, including exergetic and parametric studies, evaluation methods, economics, and improved optimization research. 9,[15][16][17][18][19][20][21] At present, many researchers have carried out fruitful work on the characteristics and economics of SAPG. Studying the dynamic characteristics of solar-aided coal-fired systems is very important for the coupling of renewable energy with conventional coal-fired power generation units.…”

Section: Introductionmentioning

confidence: 99%

Dynamic characteristics of a solar‐aided coal‐fired power generation system under direct normal irradiance (DNI) feedforward control

Pang

Duan

et al. 2019

Energy Science & Engineering

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A solar‐aided coal‐fired power generation (SAPG) system is a new type of power generation system in the field of solar thermal power generation. However, the instability of solar radiation will cause fluctuations in steam temperature, which is unfavorable for the operation of boilers and steam turbines. Based on a 600 MW subcritical coal‐fired power generation unit, TRNSYS software is applied to establish a transient simulation model of SAPG in this paper. A dynamic feedforward control system for steam temperature is set up. Some essential parameters, such as the fuel consumption rate, solar‐heated steam extraction rate, water spraying flow rate, and flue gas damper opening, are under the control of direct normal irradiance (DNI). Then, the dynamic characteristics of SAPG are analyzed using typical weather data. The simulation results show that under the fuel‐saving mode, when solar irradiation changes, the SAPG system achieves a coal reduction of 4.9% by using the steam temperature control system with DNI feedforward control, and the main steam temperature fluctuation is less than 5°C with the reheat steam temperature reduced within a reasonable range. The power generation fluctuation is less than 10 MW, and the solar‐to‐electricity efficiency reaches 22.5%. Some parameters on both the flue gas side and the water/steam side in the utility boiler are simulated to demonstrate the effectiveness of DNI control.

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Novel system integrations of 1000 MW coal-fired power plant retrofitted with solar energy and CO2 capture system

Cited by 35 publications

References 25 publications

Thermal integration of different compression-train configurations for coal-fired power plant with carbon capture

Thermal integration of different compression-train configurations for coal-fired power plant with carbon capture

Research on the Performance of Solar Aided Power Generation System Based on Annular Fresnel Solar Concentrator

Dynamic characteristics of a solar‐aided coal‐fired power generation system under direct normal irradiance (DNI) feedforward control

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