Numerical Simulation of Combustion and Characteristics of Fly Ash and Slag in a “V-type” Waste Incinerator

Luo, Zixue; Chen, Wei; Wang, Yue; Cheng, Qiang; Yuan, Xiaohua; Li, Zhigang; Yang, Junjie

doi:10.3390/en14227518

Cited by 14 publications

(5 citation statements)

References 25 publications

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“…The velocity inlet boundary conditions were applied to the primary and secondary air inlets, and a pressure outlet boundary condition was used for the flue gas outlet, with an outlet pressure of −60 Pa. The combustion gas-phase products were simplified to CH 4 , CO, H 2 , CO 2 , H 2 O, and O 2 , and the chemical reaction of the combustion process was reduced to the following three parts [25,29]:…”

Section: Numerical Simulation Methodsmentioning

confidence: 99%

Modeling Analysis and Research on the Evaporation System of a Multisource Organic Solid Waste Incinerator

Feng,

Zhuo,

Luo

et al. 2023

Sustainability

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The co-incineration of multisource organic solid waste has gradually become an important method for solid waste recycling. Through a combination of computational fluid dynamics simulation and field monitoring, a distributed parameter model of the evaporative heating surface of an incinerator was developed. The distributions of heat flux, wall temperature, and steam quality in the incinerator were analyzed under four combustion conditions involving solid waste from various sources, types, and proportions. The results revealed that under the two working conditions with 20% waste cloth, as the calorific value of the mixed fuel increased, both the peak heat flux and the peak wall temperature increased, and the nonuniformity of heat transfer within the furnace intensified. Under the influence of the composition and calorific value of the mixed fuel, the steam quality of the working fluid at the outlet of the rear water wall in the cases with 20% waste cloth was significantly higher than that in the case of pure municipal solid waste combustion and the case with 20% sludge. This study offers valuable insights into the resource utilization of multisource organic solid waste in co-incinerators.

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Section: Numerical Simulation Methodsmentioning

confidence: 99%

Modeling Analysis and Research on the Evaporation System of a Multisource Organic Solid Waste Incinerator

Feng,

Zhuo,

Luo

et al. 2023

Sustainability

Self Cite

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“…Comparing the simulation data of pure municipal solid waste combustion with the actual operation monitoring data on-site, the data error of the simulation results is within 5% (Table ), which can better reflect the actual combustion process in the furnace, and furthermore, we carried out the field test work.…”

Section: Test Setupmentioning

confidence: 98%

Experimental Studies on the Combustion Characteristics of Multisource Organic Solid Waste for Collaborative Disposal Using Municipal Solid Waste Incinerators

Zhuo,

Li,

Cheng

et al. 2024

ACS Omega

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This study investigated the evolution of furnace conditions during the heat conversion process of multisource organic solid waste. To achieve this, combustion tests involving different sludge mixing ratios, variable load operation, and multisource organic solid waste collaborative disposal were performed on a 750 t/d new municipal solid waste incineration grate furnace. The test results revealed that as the sludge mixing ratios increased from 0 to 10 and 20%, the temperature level in the furnace decreased and the fuel-type NOx emission increased. Moreover, the sludge featured poor combustion stability under lowload conditions owing to fluctuations in its calorific value and moisture content. Field tests of multisource organic solid waste revealed that after mixing waste cloth strips and papermaking waste, the temperature level in the furnace increased. Additionally, the emissivity distribution was positively correlated with the furnace flame temperature distribution, and NOx emissions also increased. The overall results indicated the feasibility of controlling the mixing rate of different organic solid wastes in the municipal solid waste incinerator within a reasonable range for cooperative incineration.

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“…The fermentation time varies from country to country due to the different water content and calorific value of the waste. In China, the calorific value of waste is generally low and the water content of waste is generally high, and the calorific value of fermented waste is generally in the range of 1800-2100 kcal/kg [23].…”

Section: Waste-to-energy Treatment Technologymentioning

confidence: 99%

Prediction of Main Parameters of Steam in Waste Incinerators Based on BAS-SVM

Chen¹,

Wang²,

Zhong³

et al. 2023

Sustainability

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The main steam parameters of a waste-to-energy plant are the key indicator of the safety and stability of its combustion process. Accurate prediction of the main steam parameters can help the control system to reasonably analyze the combustion conditions and, thus, to greatly improve the combustion efficiency. In this paper, we propose an optimized method for predicting the main steam parameters of waste incinerators. Firstly, a grey relational analysis (GRA) is used to obtain the ranking of the correlation degree between 114 characteristic variables in the furnace and the main steam parameters, and 13 characteristic variables are selected as model inputs. A Spearman-based time delay compensation method is proposed to effectively overcome the influence of time asynchrony on the prediction accuracy. At last, the beetle antennae search (BAS) optimized support vector machine (SVM) model is proposed. Taking advantage of the fast iteration of the beetle antennae search algorithm to find the key hyperparameters of the support vector machine, the optimized main steam parameter prediction model is finally obtained. The simulation results show that the prediction accuracy of this model is greatly improved compared with traditional neural network models, such as long short-term memory neural networks (LSTMs) and convolutional neural networks (CNNs), as well as a single SVM.

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Numerical Simulation of Combustion and Characteristics of Fly Ash and Slag in a “V-type” Waste Incinerator

Cited by 14 publications

References 25 publications

Modeling Analysis and Research on the Evaporation System of a Multisource Organic Solid Waste Incinerator

Modeling Analysis and Research on the Evaporation System of a Multisource Organic Solid Waste Incinerator

Experimental Studies on the Combustion Characteristics of Multisource Organic Solid Waste for Collaborative Disposal Using Municipal Solid Waste Incinerators

Prediction of Main Parameters of Steam in Waste Incinerators Based on BAS-SVM

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