Spatiotemporal statistical characteristics of multiphase flow behaviors in fuel reactor for separated-gasification chemical looping combustion of solid fuel

2021 ◽  
Vol 412 ◽  
pp. 128575
Author(s):  
Xudong Wang ◽  
Yali Shao ◽  
Baosheng Jin
Keyword(s):  
Multiphase Flow ◽  
Solid Fuel ◽  
Statistical Characteristics ◽  
Chemical Looping Combustion ◽  
Chemical Looping ◽  
Fuel Reactor

scholarly journals Modeling of the Chemical Looping Combustion of Hard Coal and Biomass Using Ilmenite as the Oxygen Carrier

Energies ◽  
2020 ◽  
Vol 13 (20) ◽  
pp. 5394
Author(s):  
Anna Zylka ◽  
Jaroslaw Krzywanski ◽  
Tomasz Czakiert ◽  
Kamil Idziak ◽  
Marcin Sosnowski ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Oxygen Carrier ◽  
Experimental Tests ◽  
Chemical Looping Combustion ◽  
Hard Coal ◽  
Chemical Looping ◽  
Simulation Accuracy ◽  
Energy Technologies ◽  
Fuel Reactor ◽  
Relative Errors

This paper presents a 1.5D model of a fluidized bed chemical looping combustion (CLC) built with the use of a comprehensive simulator of fluidized and moving bed equipment (CeSFaMB) simulator. The model is capable of calculating the effect of gas velocity in the fuel reactor on the hydrodynamics of the fluidized bed and the kinetics of the CLC process. Mass of solids in re actors, solid circulating rates, particle residence time, and the number of particle cycles in the air and fuel reactor are considered within the study. Moreover, the presented model calculates essential emissions such as CO2, SOX, NOX, and O2. The model was successfully validated on experimental tests that were carried out on the Fluidized-Bed Chemical-Looping-Combustion of Solid-Fuels unit located at the Institute of Advanced Energy Technologies, Czestochowa University of Technology, Poland. The model’s validation showed that the maximum relative errors between simulations and experiment results do not exceed 10%. The CeSFaMB model is an optimum compromise among simulation accuracy, computational resources, and processing time.

scholarly journals Cold Model Study of a 1.5 MWth Circulating Turbulent Fluidized Bed Fuel Reactor in Chemical Looping Combustion

2020 ◽  
Vol 34 (7) ◽  
pp. 8575-8586
Author(s):  
Hu Chen ◽  
Zhenshan Li ◽  
Xinglei Liu ◽  
Weicheng Li ◽  
Ningsheng Cai ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Chemical Looping Combustion ◽  
Chemical Looping ◽  
Cold Model ◽  
Model Study ◽  
Turbulent Fluidized Bed ◽  
Fuel Reactor

scholarly journals Improving the efficiency of Chemical Looping Combustion with coal by using ring-type internals in the fuel reactor

Fuel ◽  
2019 ◽  
Vol 250 ◽  
pp. 8-16 ◽  
Author(s):  
Raúl Pérez-Vega ◽  
Alberto Abad ◽  
José A. Bueno ◽  
Francisco García-Labiano ◽  
Pilar Gayán ◽  
...  
Keyword(s):  
Chemical Looping Combustion ◽  
Chemical Looping ◽  
Ring Type ◽  
Fuel Reactor

scholarly journals Transient Simulations of Spouted Fluidized Bed for Coal-Direct Chemical Looping Combustion

2014 ◽  
Author(s):  
Zheming Zhang ◽  
Ramesh Agarwal
Keyword(s):  
Carbon Capture ◽  
Power Plants ◽  
High Efficiency ◽  
Combustion Process ◽  
Chemical Looping Combustion ◽  
Successful Implementation ◽  
Chemical Looping ◽  
Two Phase ◽  
Coal Particles ◽  
Fuel Reactor

Chemical-looping combustion holds significant promise as one of the next generation combustion technology for high-efficiency low-cost carbon capture from fossil fuel power plants. For thorough understanding of the chemical-looping combustion process and its successful implementation in CLC based industrial scale power plants, the development of high-fidelity modeling and simulation tools becomes essential for analysis and evaluation of efficient and cost effective designs. In this paper, multiphase flow simulations of coal-direct chemical-looping combustion process are performed using ANSYS Fluent CFD code. The details of solid-gas two-phase hydrodynamics in the CLC process are investigated by employing the Lagrangian particle-tracking approach called the discrete element method (DEM) for the movement and interaction of solid coal particles moving inside the gaseous medium created due to the combustion of coal particles with an oxidizer. The CFD/DEM simulations show excellent agreement with the experimental results obtained in a laboratory scale fuel reactor in cold flow conditions. More importantly, simulations provide important insights for making changes in fuel reactor configuration design that have resulted in significantly enhanced performance.

CFD simulation of fuel reactor for chemical looping combustion of Indian coal

Fuel ◽  
2017 ◽  
Vol 203 ◽  
pp. 90-101 ◽  
Author(s):  
Kavitha G. Menon ◽  
Venkata Suresh Patnaikuni
Keyword(s):  
Cfd Simulation ◽  
Chemical Looping Combustion ◽  
Chemical Looping ◽  
Indian Coal ◽  
Fuel Reactor

Multiphase CFD Modeling for a Chemical Looping Combustion Process (Fuel Reactor)

2008 ◽  
Vol 31 (12) ◽  
pp. 1754-1766 ◽  
Author(s):  
Z. G. Deng ◽  
R. Xiao ◽  
B. S. Jin ◽  
Q. L. Song ◽  
H. Huang
Keyword(s):  
Combustion Process ◽  
Cfd Modeling ◽  
Chemical Looping Combustion ◽  
Chemical Looping ◽  
Fuel Reactor ◽  
Multiphase Cfd

Experimental Study of a Carbon Stripper in Solid Fuel Chemical Looping Combustion

2015 ◽  
Vol 54 (35) ◽  
pp. 8743-8753 ◽  
Author(s):  
Hongming Sun ◽  
Mao Cheng ◽  
Denggao Chen ◽  
Lei Xu ◽  
Zhenshan Li ◽  
...  
Keyword(s):  
Experimental Study ◽  
Solid Fuel ◽  
Chemical Looping Combustion ◽  
Chemical Looping

Review of Computational Fluid Dynamics Studies on Chemical Looping Combustion

2020 ◽  
Vol 143 (8) ◽  
Author(s):  
Yali Shao ◽  
Ramesh K. Agarwal ◽  
Xudong Wang ◽  
Baosheng Jin
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Oxygen Carrier ◽  
Combustion Process ◽  
Chemical Looping Combustion ◽  
Chemical Looping ◽  
Flow Process ◽  
Gas Leakage ◽  
Fuel Reactor ◽  
Energy Penalty

Abstract Chemical looping combustion (CLC) is an attractive technology to achieve inherent CO2 separation with low energy penalty. In CLC, the conventional one-step combustion process is replaced by two successive reactions in two reactors, a fuel reactor (FR) and an air reactor (AR). In addition to experimental techniques, computational fluid dynamics (CFD) is a powerful tool to simulate the flow and reaction characteristics in a CLC system. This review attempts to analyze and summarize the CFD simulations of CLC process. Various numerical approaches for prediction of CLC flow process are first introduced and compared. The simulations of CLC are presented for different types of reactors and fuels, and some key characteristics including flow regimes, combustion process, and gas-solid distributions are described in detail. The full-loop CLC simulations are then presented to reveal the coupling mechanisms of reactors in the whole system such as the gas leakage, solid circulation, redox reactions of the oxygen carrier, fuel conversion, etc. Examples of partial-loop CLC simulation are finally introduced to give a summary of different ways to simplify a CLC system by using appropriate boundary conditions.

CFD simulation of a chemical-looping fuel reactor utilizing solid fuel

2011 ◽  
Vol 66 (16) ◽  
pp. 3617-3627 ◽  
Author(s):  
Kartikeya Mahalatkar ◽  
John Kuhlman ◽  
E. David Huckaby ◽  
Thomas O'Brien
Keyword(s):  
Solid Fuel ◽  
Cfd Simulation ◽  
Chemical Looping ◽  
Fuel Reactor
Sign in / Sign up

Export Citation Format

Share Document