Process modeling for hydrocarbon fuel conversion

Vásquez, Edilberto; Eldredge, Tom

doi:10.1533/9780857093783.5.509

Cited by 9 publications

(4 citation statements)

References 3 publications

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“…The employed governing equations for current case study are listed in Table 1. In any CFD model, solving continuity (1) and momentum (2) equations are necessary to obtain pressure, velocity, and density field.…”

Section: Governing Equationmentioning

confidence: 99%

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On the Importance of Model Selection for CFD Analysis of High Temperature Gas-Solid Reactive Flow; Case Study: Post Combustion Chamber of HIsarna Off-Gas System

et al. 2023

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In this paper a CFD analysis of HIsarna off-gas system for post combustion of CO-H2-carbon particle mixture is presented to evaluate the effect of different sub-models and parameters on the accuracy of predictions and simulation time. The effects of different mesh type, mesh grid size, radiation models, turbulent models, kinetic mechanism, turbulence chemistry interaction models, including and excluding gas-solid reactions, number of reactive solid particles are investigated in detail. Based on the accuracy of the predictions and agreement with counterpart measured values, the best combination is selected and conclusions are derived. It was found that radiation and turbulence chemistry interaction model have a major effect on the temperature and composition profile prediction along the studied off-gas system, compared to the variations in other models. The effect of these two models becomes even more evident when the temperature and fuel content of the flue gas are high.

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Section: Governing Equationmentioning

confidence: 99%

“…CFD modelling is an iterative design process with large number of parametric variations [1][2][3]. Using CFD tools, it is possible to study almost any phenomena at any scale and complexity where knowledge of a spatial distribution of flow quantities is desired [4].…”

Section: Introductionmentioning

confidence: 99%

On the Importance of Model Selection for CFD Analysis of High Temperature Gas-Solid Reactive Flow; Case Study: Post Combustion Chamber of HIsarna Off-Gas System

et al. 2023

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“…EDM assumed that chemical kinetic rates are considerably faster than rates of turbulent mixing. Then turbulent mixing is responsible for the reaction rate-limiting process [33].…”

Section: Setupmentioning

confidence: 99%

Numerical and Experimental Analysis of Heat Transfer for Solid Fuels Combustion in Fixed Bed Conditions

Judt

2020

Energies

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The paper concerns the analysis of the heat transfer process that occurred during solid fuel burning in fixed bed conditions. The subject of the analysis is a cylindrical combustion chamber with an output of 12 kW heating power equipped with a retort burner for hard coal and biomass combustion. During the research, a numerical and experimental study is performed. The analysis is prepared for various heat load of the combustion chamber, which allowed for the reconstruction of real working conditions for heating devices working with solid fuels combustion. The temperature distribution obtained by the experimental way is compared with results of the numerical modeling. Local distribution of principal heat transfer magnitudes like a heat flux density and a heat transfer coefficient that occurred on the sidewall of the combustion chamber is analyzed. The analysis showed, that the participation of convection and radiation in the overall heat transfer process has resulted from the heat load of the heating device. Research results may be used for improving an analytical approach of design process taking place for domestic and industrial combustion chambers.

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“…Hysys is a Hyprotech Systems process modeling software by AspenTech used for steady state simulation, design, performance monitoring, optimization and business planning for oil and gas production, gas processing and petroleum refining industries. Hysys has thermodynamic models embedded in it that aids in its ability to accurately predict the formation conditions for hydrate in flowlines using the Hysys Hydrate Formation Utility [11]. This Hydrate Formation utility in Hysys calculates the incipient solid formation point for hydrates [12].…”

Section: Introductionmentioning

confidence: 99%

Simulation of Laboratory Hydrate Loop Using Aspen Hysys

Olabisi¹,

Emmanuel²

2019

EAS

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Gas hydrates have repeatedly plagued the oil and gas industry by impeding flow and causing catastrophic damages to subsea pipelines and equipment. Several software as well as equipment have been developed to reduce hydrate plugs in the field. In this study, steady state simulation and dynamic state simulation on a laboratory hydrate loop was carried out using Aspen Hysys. During the simulation, two mixers (Mixer 1 and Mixer 2) were selected to create the inhibitor water stream and the mixed feed stream respectively in the Process Flow Diagram (PFD). A pump was then selected to boost the pressure in the simulation to 150 psia and to agitate the fluid. Heat exchanger was selected to reduce the temperature to hydrate formation temperature, mimicking the action of the 4" PVC water bath in which the loop is immersed in the experimental set up. In the dynamic simulation, valves were included in the feed stream of the PFD created for the steady state simulation. The feed stream used in the simulation study contained 85% methane and 2wt% methanol as inhibitor. The steady state simulation did not record hydrate formation implying that the 2wt% Methanol used as inhibitor was sufficient to prevent hydrate formation in the loop. However, the dynamic state simulation which was set to run for 2 hours just as the experimental setup recorded hydrate formation at a temperature of 4.26 °C and a pressure of 83.84 psi. This can also imply that during shut in process, hydrate formation may not occur as the line may only attain hydrate formation temperature. However, during restart prrocess which is like the dynamkic simulation, a lot of aggitation takes place and hydrate formation will be noticed. Therefore, the engineer must proceed to dynamic state simulation before concluding on the effectiveness of a particular dosage of inhibitor prior to field application.

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Process modeling for hydrocarbon fuel conversion

Cited by 9 publications

References 3 publications

On the Importance of Model Selection for CFD Analysis of High Temperature Gas-Solid Reactive Flow; Case Study: Post Combustion Chamber of HIsarna Off-Gas System

On the Importance of Model Selection for CFD Analysis of High Temperature Gas-Solid Reactive Flow; Case Study: Post Combustion Chamber of HIsarna Off-Gas System

Numerical and Experimental Analysis of Heat Transfer for Solid Fuels Combustion in Fixed Bed Conditions

Simulation of Laboratory Hydrate Loop Using Aspen Hysys

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