Performance analysis and operation strategy of an improved waste-to-energy system incorporated with a coal-fired power unit based on feedwater heating

Heng, Chen; Zhang, Meiyan; Chen, Zhidong; Xu, Gang; Han, Wei; Liu, Wenyi; Liu, Tong

doi:10.1016/j.applthermaleng.2020.115637

Cited by 14 publications

(5 citation statements)

References 46 publications

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“…Therefore, integrated design is worthy of popularization and application. The previous works [31,33] have improved net power output effectively. Comparing the results of Mode 1 and Mode 2, it is not difficult to find that the net power output can be increased slightly when adopting the transformation of APHs.…”

Section: Discussionmentioning

confidence: 99%

“…The integration method is what researchers need to consider when coupling different thermal systems. According to previous research on the integration of a coal-fired power plant and a waste incineration power plant [31,33], aiming for the net power output of integrated system, the net power output results are compared under several integrated modes as follows: Among the above seven modes, the method of APHs transformation is the same. The net power output results are presented in the Figure 7.…”

Section: Discussionmentioning

confidence: 99%

“…Based on the previous research on the integration of WTEU and CFPU systems [31,33], this article further optimized the integrated design and proposed the layout of auxiliary devices in the system integration. The two power plants mentioned in this article are in operation.…”

Section: Methodsmentioning

confidence: 99%

“…This study develops a deep integration of a 500 t/d WTEU and a 660 MW CFPU based on the steam-water cycle and hydrolysis of urea into ammonia process, according to the existing research on the integration of a waste incineration plant and a coal-fired power plant [31,33]. The performance of this integrated design is evaluated by thermo-dynamic analysis and economic analysis methods, which is described by the previous works [25,34,35].…”

Section: Introductionmentioning

confidence: 99%

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Performance Analysis of a Waste-to-Energy System Integrated with the Steam–Water Cycle and Urea Hydrolysis Process of a Coal-Fired Power Unit

et al. 2022

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An innovative hybrid energy system consisting of a waste-to-energy unit and a coal-fired power unit is designed to enhance the energy recovery of waste and decrease the investment costs of waste-to-energy unit. In this integrated design, partial cold reheat steam of the coal-fired unit is heated by the waste-to-energy boiler’s superheater. The heat required for partial preheated air of waste-to-energy unit and its feedwater are supplied by the feedwater of CFPU. In addition, an additional evaporator is deployed in the waste-to-energy boiler, of which the outlet stream is utilized to provide the heat source for the urea hydrolysis unit of coal-fired power plant. The stand-alone and proposed designs are analyzed and compared through thermodynamic and economic methods. Results indicate that the net total energy efficiency increases from 41.84% to 42.12%, and the net total exergy efficiency rises from 41.19% to 41.46% after system integration. Moreover, the energy efficiency and exergy efficiency of waste-to-energy system are enhanced by 10.48% and 9.92%, respectively. The dynamic payback period of new waste-to-energy system is cut down from 11.39 years to 5.48 years, and an additional net present value of $14.42 million is got than before.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Performance Analysis of a Waste-to-Energy System Integrated with the Steam–Water Cycle and Urea Hydrolysis Process of a Coal-Fired Power Unit

et al. 2022

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“…Chen et al [134] used the thermal energy of an MSW-fed incinerator to heat the feedwater and the turbine-extracted steam of a coal-fueled steam power plant. The proposed hybrid power plant could improve the waste-to-electricity exergy efficiency compared with the reference plants, i.e., coal-or MSW-fired steam power cycles.…”

Section: Municipal Solid Waste Incinerationmentioning

confidence: 99%

Exergetic sustainability analysis of municipal solid waste treatment systems: A systematic critical review

Soltanian

Kalogirou

Ranjbari

et al. 2022

Renewable and Sustainable Energy Reviews

107

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Developing an operating instruction to attenuate pressure stress during fuel shortage events of a power boiler based on dynamic modelling

Mahmoudi

Najafabadi

Moarefianpour

2022

Applied Thermal Engineering

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Performance analysis and operation strategy of an improved waste-to-energy system incorporated with a coal-fired power unit based on feedwater heating

Cited by 14 publications

References 46 publications

Performance Analysis of a Waste-to-Energy System Integrated with the Steam–Water Cycle and Urea Hydrolysis Process of a Coal-Fired Power Unit

Performance Analysis of a Waste-to-Energy System Integrated with the Steam–Water Cycle and Urea Hydrolysis Process of a Coal-Fired Power Unit

Exergetic sustainability analysis of municipal solid waste treatment systems: A systematic critical review

Developing an operating instruction to attenuate pressure stress during fuel shortage events of a power boiler based on dynamic modelling

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