3-D CFD Modeling for Parametric Study in a 300-MWe  One-Stage Oxygen-Blown Entrained-Bed Coal Gasifier

Park, Sangshin; Jeong, Hyo Jae; Hwang, Jungho

doi:10.3390/en8054216

Cited by 36 publications

(18 citation statements)

References 33 publications

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“…This model used Discrete Ordinate (DO) radiation model for the gas and particle radiation interactions. The domain-based weighted-sum-of-gray-gases model (WSGGM) for the radiative properties of the gases was applied [42]. To prevent divergence, under relaxation factor for pressure, momentum and volume fraction were set at 0.1.…”

Section: Cfd Simulation Methodsmentioning

confidence: 99%

Coal Type, Temperature and Gasifiying Agent Effects on Low-Rank Coal Gasification Using CFD Method

Isa

Osman

Abdullah

et al. 2020

CFDL

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Low-Rank Coal (LRC) gasification utilising Fluidised Bed Gasifier (FBG) is more efficient for LRC that has higher reactivity, moisture, tar, volatile, and ash content but lower calorific value compared to other types of coals. This work investigated the application of Computational Fluid Dynamics (CFD) in simulating LRC gasification under different temperatures which is lower (873K), normal (973K) and higher (1073K) temperature atmosphere. Besides that, the effect of LRC type and gasifying agents on the producer gas CO+H2 composition, Lower Heating Value (LHV) and Cold Gas Efficiency (CGE) were also studied using High-rank Coal (HRC) as comparison. The results obtained showed that LRC gasification using oxygen increased LHV and CGE. Lower temperature gasification using oxygen at 873 increased CO+H2, LHV and CGE for LRC compared to higher temperatures at 973K and 1073K. This prediction suggests that LRC gasification using oxygen at lower temperature increases the LRC gasification efficiency.

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Section: Cfd Simulation Methodsmentioning

confidence: 99%

Coal Type, Temperature and Gasifiying Agent Effects on Low-Rank Coal Gasification Using CFD Method

Isa

Osman

Abdullah

et al. 2020

CFDL

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“…The gasification chamber considered in the paper was Shell Coal Gasification Process (SCGP) gasifier which is a one-stage, entrained-bed facility with nominal power of 300 MW. All details including geometry and work conditions can be found in [5].…”

Section: Extended Abstractmentioning

confidence: 99%

The Effect of Particles Surface Temperature Distribution in Numerical Modelling Of High Scale Combustion and Gasification Chambers

Karchniwy¹,

Klimanek²,

Sładek³

et al. 2021

World Congress on Mechanical, Chemical, and Material Engineering

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“…where L g is the universal gas constant, kJ/(kmol • K); T g is gas temperature [7,8], K; C is concentration of oxygencontaining compound in the gas phase [9,10], kmol/m 3. Therefore, the values of the rates of release of volatile substances and their thermal decomposition are close, so that the value 17) [4]). However, the gradients of the heating rates of peat granules in options 1 and 4 in the same time interval diff er signifi cantly.…”

Section: Introductionmentioning

confidence: 99%

Numerical studies on thermochemical processing of peat in a fixed layer

Rokhman¹,

Dunayevska²,

Vyfatnuik³

et al. 2022

Nauk. visn. nat. hirn. univ.

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Purpose. To investigate the gasification process of peat in gas generators with a fixed bed at a pressure of 1.5 MPa and create the initial conditions at the entrance to the waste burners required for combustion of the binary mixture. Methodology. The objects of research were peat granules of Volyn peat. To calculate the process of gasification of peat gas, the constructed model of thermochemical processing of solid fuel, described in the first part of the work by the authors was used. Findings. It is shown that in the area close to the upper boundary of the fixed bed, where the process of gasification of peat is stationary, there is a jump in the temperature of peat particles from 300 to 772C, in which the tar is practically not released, and thus the obtained pyrolysis gas contains CO2, H2O, H2 and CO. The structural and physicochemical characteristics of gas generators are obtained and the initial conditions at the entrance to the discharge burners of the chamber furnace of the steam generator TPP-210A are formed. Originality. It is shown that when the velocity of peat particles decreases, a slag bed is formed between the zone of maximum heat release and the grate, which consists of cooled ash particles, which protect the grate from overheating. With such an organization of the process it is possible to achieve the stationary process of gasification with mechanical incompletely burned material equal to zero. Practical value. It is shown that with the help of the model of thermochemical processing of solid fuels it is possible to adjust the height of the dry distillation zone by changing the velocity of the dispersed phase and the rate of heterogeneous and homogeneous chemical reactions by changing the proportion of O2 or H2O air enrichment.

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3-D CFD Modeling for Parametric Study in a 300-MWe One-Stage Oxygen-Blown Entrained-Bed Coal Gasifier

Cited by 36 publications

References 33 publications

Coal Type, Temperature and Gasifiying Agent Effects on Low-Rank Coal Gasification Using CFD Method

Coal Type, Temperature and Gasifiying Agent Effects on Low-Rank Coal Gasification Using CFD Method

The Effect of Particles Surface Temperature Distribution in Numerical Modelling Of High Scale Combustion and Gasification Chambers

Numerical studies on thermochemical processing of peat in a fixed layer

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