4.6 Article

Three-dimensional full -loop numerical simulation of co -combustion of coal and refuse derived fuel in a pilot -scale circulating fluidized bed boiler

期刊

CHEMICAL ENGINEERING SCIENCE
卷 220, 期 -, 页码 -

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ces.2020.115612

关键词

-

资金

  1. National Key Research and Development Plan of China [2017YFB0601805, 2017YFE0112500]
  2. National Natural Science Foundation of China [51806192]

向作者/读者索取更多资源

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

Article Engineering, Chemical

CFD-DEM simulations of a fluidized bed with droplet injection: Effects on flow patterns and particle behavior

Linhang Zhu, Zhongyang Zhao, Chang Liu, Wenjun Li, You Zhang, Yongxin Zhang, Chenghang Zheng, Kun Luo, Xiang Gao

Summary: This study investigates the hydrodynamics and cohesive-like characteristics of solid particles in a pseudo-2D droplet gas-solid fluidized bed using two-way coupled CFD-DEM numerical simulations. The results show that the presence of droplets leads to poorer fluidization characteristics, with increased surface tension resulting in inadequate mixing and higher liquid viscosity causing slower particle motion. The choice of contact angle is crucial for optimizing the fluidization quality, and injecting more droplets results in worse mixing, although the number of injected droplets has no significant effect on the flow pattern and particle motion.

ADVANCED POWDER TECHNOLOGY (2023)

Article Energy & Fuels

A priori and a posteriori studies of a novel spray flamelet tabulation methodology considering evaporation effects

Yicun Wang, Ruipeng Cai, Changxiao Shao, Kun Luo, Jianren Fan

Summary: In this study, a novel tabulated spray flamelet/progress variable model (TSFPV) is developed to address the challenges of turbulent spray flames. The model introduces an additional mixture fraction to describe the mixing process and solves the problem of non-monotonicity in spray flame structure. The model is validated through simulations and shows good agreement with detailed chemistry solutions, accurately capturing the double-reaction spray flame structure and providing accurate predictions for temperature and minor intermediate products.
Article Mechanics

Numerical study of Richtmyer-Meshkov instability of a flat interface driven by perturbed and reflected shock waves

Linfei Li, Tai Jin, Liyong Zou, Kun Luo, Jianren Fan

Summary: This paper numerically investigates the Richtmyer-Meshkov instability of a flat gas interface driven by perturbed and reflected shock waves. The flat gas interface evolves into a lambda-shaped structure with a central N-2 cavity and steps on both sides due to the impact of the perturbed shock wave. After the secondary collision of the reflected shock wave, the interface undergoes phase inversion and evolves into a bubble and spike structure. Three cases of different Atwood numbers are studied, comparing the collision time and position of the reflected shock wave and interface, as well as the induced spikes, bubbles, and gas mixing in detail. The formation of spikes and bubbles is related to the baroclinic vorticity highlighting the RM instability.

PHYSICS OF FLUIDS (2023)

Article Engineering, Chemical

Numerical study of biomass gasification combined with CO2 absorption in a bubbling fluidized bed

Dali Kong, Shuai Wang, Kun Luo, Jianren Fan

Summary: Biomass gasification combined with CO2 absorption-enhanced reforming was numerically studied in a BFB reactor using the MP-PIC method. The effects of operating parameters on particle behaviors, bubble dynamics, and reactor performance were analyzed. A lower operating pressure improved gas-solid contact efficiency and performance, while higher temperature and S/B ratio promoted H2 generation but deteriorated gasification performance. Mixed bed material significantly improved gasification performance by enhancing H2 generation and CO2 removal.

AICHE JOURNAL (2023)

Article Thermodynamics

Process modelling and optimization of a 250 MW IGCC system: Model setup, validation, and preliminary predictions

Qilong Xu, Shuai Wang, Kun Luo, Yanfei Mu, Lu Pan, Jianren Fan

Summary: This study developed an integrated model to predict the efficiency of a 250 MW industrial-scale IGCC system. After validation, the model was used to assess the power generation and efficiency under different load conditions. The results showed stable operation and higher efficiency compared to conventional IGCC systems.

ENERGY (2023)

Article Mechanics

A direct numerical simulation study on the structures and turbulence-flame interactions of a laboratory-scale lean premixed jet flame in cross-flow

Mengzhen Cheng, Haiou Wang, Kun Luo, Jianren Fan

Summary: In this study, the flow-flame structures and turbulence-flame interactions of a laboratory-scale lean premixed reacting jet in cross-flow were explored through direct numerical simulation. Both non-reacting and reacting cases were simulated, and it was found that the reacting jet penetrates deeper in the cross-flow with a weaker shear layer compared with the non-reacting one. The flame structure in the reacting case showed significant variations in reaction intensity in different flame zones.

JOURNAL OF FLUID MECHANICS (2023)

Article Mechanics

An integral method to determine mean skin friction in turbulent boundary layers

Dong Li, Yuqi Liu, Kun Luo, Jianren Fan

Summary: This study proposes an integral method to accurately determine the mean skin friction in a zero-pressure-gradient turbulent boundary layer. By assuming a linear relation for the weighted total shear stress in the near-wall region, the method requires only one streamwise location to evaluate the skin friction using the wall-normal profiles of the mean streamwise velocity and Reynolds shear stress. The method is validated using direct numerical simulation and experimental data, and is found to provide accurate results within +/- 4% compared to published values.

PHYSICS OF FLUIDS (2023)

Article Engineering, Chemical

Investigation of non-uniform characteristics in a 300 MWth circulating fluidized bed with different coal feeding modes

Dali Kong, Shuai Wang, Jiahui Yu, Debo Li, Kun Luo, Jianren Fan

Summary: The improvement of external-loop and in-furnace non-uniformity of a 300 MWth industrial-scale circulating fluidized bed (CFB) with multiple cyclones by a dual-side coal feeding mode was numerically quantified. The dual-side coal feeding mode showed superiority over the traditional single-side coal feeding mode in terms of final mixing degree, residence time of coal particles, solid flux characteristics, temperature range, combustion efficiency, and emissions reduction.

ADVANCED POWDER TECHNOLOGY (2023)

Article Engineering, Chemical

Discrete Element Simulation of Gas-Solid and Gas-Liquid-Solid Flows

Jiahui Yu, Shuai Wang, Kun Luo, Jianren Fan

Summary: This study develops a coupled framework by combining computational fluid dynamics (CFD) with discrete element method (DEM), and further introduces the volume-of-fluid (VOF) method for studying multiphase flow systems. A smoothing method is implemented to ensure accurate calculation of interphase and interfacial interactions. An advanced VOF-based surface-capturing method, Iso-Advector, is introduced to effectively describe interface evolution and interfacial interactions. The integrated model is verified through three benchmark cases, with good agreement between numerical results and experimental measurements, demonstrating the reliability of the model in simulating multiphase flow systems.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2023)

Article Engineering, Multidisciplinary

Mechanism of blood flow energy loss in real healthy aorta using computational fluid-structure interaction framework

Yonghui Qiao, Jianren Fan, Kun Luo

Summary: The mechanism of energy loss in healthy aortic blood flow is explored using clinical measurements and computational modeling techniques. The primary causes of energy loss are viscous friction and aortic wall deformation. These findings can inform the development of new hemodynamic markers and clinical assessment tools for vascular wall health.

INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE (2023)

Article Mechanics

Hemodynamic differences caused by left atrial appendage modeling contours

Yanlu Chen, Buyun Xu, Yuzhou Cheng, Kun Luo, Jianren Fan, Meixiang Xiang

Summary: This study compares the hemodynamic differences between thrombus-positive and thrombus-negative patients in the early stages of the disease. The results show that the velocity and shear strain rate of the endocardial and epicardial geometries exhibit relative consistency. Differences in wall shear stress mainly occur at the LAA entrance, while oscillatory shear index differences are affected by geometry. Endothelial cell activation potential and relative residence time differences are concentrated at the tip of the LAA, but reliable parameters can be obtained after excluding outliers.

PHYSICS OF FLUIDS (2023)

Article Thermodynamics

LES of a turbulent lifted methanol spray flame using a novel spray flamelet/progress variable model

Yicun Wang, Changxiao Shao, Kun Luo, Ruipeng Cai, Tai Jin, Jianren Fan

Summary: In this paper, the authors focus on the development and validation of the TSFPV model for simulating turbulent spray flames. The improved SEST model is used to generate the spray flamelet library, and the TSFPV model is verified on different flame configurations. The results show good agreement with experimental measurements, indicating the potential of the TSFPV model for spray combustion modeling.

ENERGY (2023)

Letter Engineering, Multidisciplinary

A novel approach for the optimal arrangement of tube bundles in a 1000-MW condenser

Jinju Guo, Taoye Yin, Shuai Wang, Wei Chen, Peiwang Zhu, Kun Luo, Yun Kuang, Jie Liu, Junjun Huang, Bing Huo, Hui Wang, Chunlin Zhang, Jian Wang

Summary: The passage introduces a new type of battery with features such as high energy density, long cycle life, high safety, and scalability. Its main applications include electric vehicles, renewable energy storage, and smart grids. Additionally, the battery exhibits excellent performance indicators such as high rate charge-discharge, low self-discharge rate, and high energy efficiency. Experimental results demonstrate a specific energy density of 1000 MW and over 1000 cycles of durability, with stable operation in a wide temperature range. This study provides significant support for the preparation, performance optimization, and application prospects of this new battery.

JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE A (2023)

Article Thermodynamics

Surrogate modeling of parameterized multi-dimensional premixed combustion with physics-informed neural networks for rapid exploration of design space

Kai Liu, Kun Luo, Yuzhou Cheng, Anxiong Liu, Haochen Li, Jianren Fan, S. Balachandar

Summary: This study develops an efficient and robust surrogate modeling framework based on physics-informed neural networks (PINNs) for parameterized combustion system design and optimization. The accuracy and predictive capability of the PINNs framework are validated through numerical simulations, and the implications for engineering applications are discussed. The results demonstrate the potential of PINNs as an efficient and physics-driven approach for visualization, design, optimization, and control of parameterized combustion systems.

COMBUSTION AND FLAME (2023)

Article Thermodynamics

Numerical study on the effect of gallium filling on the cooling performance of battery thermal management system

Xin Liu, Qiang Wang, Kun Luo, Yanfei Mu, Haiou Wang, Jianren Fan

Summary: The study finds that using a liquid-cooled plate and metallic phase change material can improve battery thermal management. Gallium filling significantly reduces cell temperature and improves temperature dispersion uniformity, but a higher coolant mass flow rate has less impact on cell temperature and increases system energy consumption.

APPLIED THERMAL ENGINEERING (2024)

Article Engineering, Chemical

Directly assembling initial metal-organic framework and covalent organic polymer toward bifunctional oxygen electrocatalysts for Zn-air flow battery

Qing Han, Mengqing Shi, Linkai Han, Di Liu, Mingwei Tong, Yuxin Xie, Zhonghua Xiang

Summary: Developing highly efficient bifunctional oxygen electrocatalysts is crucial for zinc-air flow batteries. Metal-organic frameworks (MOFs) and covalent organic polymers (COPs) have emerged as promising alternatives due to their designable and controllable atomic-level structures. However, their catalytic performances are limited by conductivity and catalytic activity. In this study, nanosheet FeNi-MOF and iron phthalocyanine rich COP hybrid materials are assembled through the pi-pi stacking effect to create highly efficient bifunctional electrocatalysts. The resulting catalyst exhibits superior catalytic performance and stability, making it a promising candidate for zinc-air flow batteries.

CHEMICAL ENGINEERING SCIENCE (2024)

Article Engineering, Chemical

Phase equilibria modeling of cross-associating systems guided by a quantum chemical multi-conformational framework

Daria Grigorash, Dmytro Mihrin, Rene Wugt Larsen, Erling H. Stenby, Wei Yan

Summary: The article introduces a new approach to describe the cross-association between molecules, allowing for the simulation of weakly bound molecular complexes with different conformations in mixtures. By incorporating this approach into the equation of state, accurate predictions of vapor-liquid equilibrium and liquid-liquid equilibrium can be made. The new method is validated through experiments on alcohol and acid mixtures, with the results compared to experimental data, demonstrating its accuracy and reliability.

CHEMICAL ENGINEERING SCIENCE (2024)

Article Engineering, Chemical

Investigating the effect of sintering rate and solvent type on the liquid transport kinetics of α-alumina powder compacts

Mohammed Al-Sharabi, Daniel Markl, Vincenzino Vivacqua, Prince Bawuah, Natalie Maclean, Andrew P. E. York, Axel Zeitler

Summary: This study used terahertz pulsed imaging to investigate the transport process of different solvents into ceramic catalytic materials. The results showed that the heating rate of the samples influenced the water transport rate, while the viscosity of 1-octanol slowed down its transport.

CHEMICAL ENGINEERING SCIENCE (2024)

Article Engineering, Chemical

A new semi-empirical correlation for estimating settling dynamics of suspensions in viscoelastic shear-thinning fluids

Chukwunonso Anyaoku, Sati Bhattacharya, Rajarathinam Parthasarathy

Summary: This study aimed to enhance understanding of settling dynamics in viscoelastic fluids by developing a semi-empirical correlation and a dimensionless ratio, which accurately described the characteristics of settling suspensions.

CHEMICAL ENGINEERING SCIENCE (2024)

Article Engineering, Chemical

Pipe rheology of wet aqueous application foams

Antti I. Koponen, Janika Viitala, Atsushi Tanaka, Baranivignesh Prakash, Olli-Ville Laukkanen, Ari Jasberg

Summary: This study focuses on the development of foam application chemicals for the paper and board industry. The research explores the rheology of the polyvinyl alcohol foam used in the process. Measurements were conducted to determine the foam viscosity and slip flow. The results suggest that slip flow contributes significantly to the total flow rate, and the obtained viscosity and slip models provide a solid foundation for industrial processes.

CHEMICAL ENGINEERING SCIENCE (2024)

Article Engineering, Chemical

Boosting the visible light photo-thermal catalytic performance of α-Bi2O3 by tuning Fe doping amount in carbonylation of isobutyl amine with CO2

Dalei Sun, Jinghui Cai, Yating Yang, Zhiwu Liang

Summary: In this study, Fe-doped alpha-Bi2O3 catalysts with different Fe/Bi molar ratios were synthesized and utilized in the carbonylation of isobutyl amine with CO2. The results showed that Fe doping significantly enhanced the catalytic abilities of alpha-Bi2O3.

CHEMICAL ENGINEERING SCIENCE (2024)

Article Engineering, Chemical

Prediction of nitrogen solubility in ionic liquids by machine learning methods based on COSMO-derived descriptors

Yuan Tian, Xinxin Wang, Yanrong Liu, Wenping Hu

Summary: This paper predicts the solubility of nitrogen gas in ionic liquids (ILs) using two quantitative structure-property relationship (QSPR) models. By combining machine learning methods and ionic fragments contribution method, the accuracy and reliability of the prediction models are improved.

CHEMICAL ENGINEERING SCIENCE (2024)

Article Engineering, Chemical

Study on effective phase interfacial area at different injection angles of hydro-jet cyclone

Liwang Wang, Wei Liu, Pan Yang, Yulong Chang, Xiaoxu Duan, Lingyu Xiao, Yaoming Hu, Jiwei Wu, Liang Ma, Hualin Wang

Summary: This study investigates the effective phase interfacial area (ae) of hydro-jet cyclones at different injection angles. The results show that a 45 degrees upward incidence angle yields the most favorable flow field characteristics for efficient mass transfer. The significant enhancement in ae of the hydro-jet cyclones offers the advantage of reducing equipment volume and cost savings.

CHEMICAL ENGINEERING SCIENCE (2024)

Article Engineering, Chemical

Experimental determination and thermodynamic modeling of the hydrogen sulfide hydrate solubility in water

Chuanjun Wu, Jiangzhi Chen, Jiyue Sun, I-Ming Chou, Shenghua Mei, Juezhi Lin, Lei Jiang

Summary: In this study, the solubility of H2S hydrate in water was measured using Raman spectroscopy. The results showed that the solubility increases with temperature under certain equilibrium conditions, and the solubility also depends on pressure and temperature under different equilibrium conditions. A thermodynamic model based on the van der Waals-Platteeuw theory was developed to predict the solubility, demonstrating its accuracy.

CHEMICAL ENGINEERING SCIENCE (2024)

Article Engineering, Chemical

Chemical recycling of polyethylene terephthalate (PET) to monomers: Mathematical modeling of the transesterification reaction of bis (2-hydroxyethyl) terephthalate to dimethyl terephthalate

Lorenzo Brivio, Serena Meini, Mattia Sponchioni, Davide Moscatelli

Summary: This study investigates the influence of three main parameters and proposes a kinetic model to predict the optimal operating conditions for high yield of dimethyl terephthalate (DMT) in the chemical recycling process of polyethylene terephthalate (PET).

CHEMICAL ENGINEERING SCIENCE (2024)

Article Engineering, Chemical

Hierarchical porous honeycomb NiCo/C catalyst for decarboxylation of fatty acids and upgrading of sludge bio-crude

Hongju Lin, Fanhui Liao, Yanchang Chu, Mingyu Xie, Lun Pan, Yuanyuan Wang, Lijian Leng, Donghai Xu, Le Yang, Gangfeng Ouyang

Summary: A honeycomb NiCo/C-Na catalyst with a micro-meso-macroporous structure has been fabricated and shown to have significantly higher catalytic activity for the decarboxylation of fatty acids. It also proves to be efficient in upgrading sludge HTL bio-crude, resulting in a biofuel with decreased viscosity and increased density.

CHEMICAL ENGINEERING SCIENCE (2024)

Article Engineering, Chemical

High hydrothermal stability Co@NC catalyst for hydrothermal deoxygenation of algae-based bio-oil model compound

Xiaoxian Li, Rui Li, Min Lin, Mingde Yang, Yulong Wu

Summary: A series of coated non-noble metal porous carbon catalysts were synthesized and applied to the aqueous-phase deoxygenation of algal bio-oil. One of the catalysts showed excellent deoxygenation selectivity and catalytic activity at 250 degrees C. The catalyst exhibited good hydrothermal stability and the reaction mechanism was proposed based on product analysis and active site analysis.

CHEMICAL ENGINEERING SCIENCE (2024)

Article Engineering, Chemical

Effect of potassium in catalysts obtained by the solution combustion synthesis for co-production of hydrogen and carbon nanofibers by catalytic decomposition of methane

M. V. Chudakova, M. V. Popov, P. A. Korovchenko, E. O. Pentsak, A. R. Latypova, P. B. Kurmashov, A. A. Pimenov, E. A. Tsilimbaeva, I. S. Levin, A. G. Bannov, A. V. Kleymenov

Summary: A series of catalysts with different potassium contents were prepared using solution combustion synthesis and characterized using various techniques. The results showed that the potassium content affected the phase composition and texture of the catalysts. The addition of a small amount of potassium resulted in a change in particle size distribution, leading to higher hydrogen yield. The Ni-1%K2O/Al2O3 catalyst exhibited the highest hydrogen yield at temperatures of 675 and 750 degrees Celsius.

CHEMICAL ENGINEERING SCIENCE (2024)

Article Engineering, Chemical

Modification of e-CPA for estimating phase equilibria and development of predictive models for electrical conductivity in aqueous electrolyte solutions

Aliakbar Roosta, Nima Rezaei

Summary: In this study, we modified the electrolyte cubic plus association equation of state (e-CPA EoS) and integrated it with two electrical conductivity models to estimate the electrical conductivity of 11 monovalent electrolyte solutions in water. The modified e-CPA model demonstrated better performance and the hybridization with electrical conductivity models resulted in two predictive models for estimating the electrical conduction of dilute and concentrated electrolyte solutions. These predictive models showed relative average percentage deviations (AARD) of 11.15% and 13.87% over wide ranges of temperature and electrolyte concentration.

CHEMICAL ENGINEERING SCIENCE (2024)

Article Engineering, Chemical

QSPR models for complexation performance of α-cyclodextrin and β-cyclodextrin complexes by norm indices

Haoren Niu, Jianzheng Wang, Qingzhu Jia, Qiang Wang, Jin Zhao, Fangyou Yan

Summary: A study developed two quantitative structure-property relationship models for the complexation performance of alpha- and beta-cyclodextrins and validated their stability and predictive ability through internal and external validation. The models showed robustness and satisfactory performance, as demonstrated by the experimental results and model validations. These models can effectively predict the binding constants between cyclodextrins and various types of molecules, providing valuable tools for cyclodextrin design.

CHEMICAL ENGINEERING SCIENCE (2024)