Gasifying agents type at lower temperature effect on bubbling fluidised bed gasification for low rank coal

Isa, Kamariah Md; Osman, Kahar; Abdullah, Nik Rosli; Othman, Nor Fadzilah; Hamid, Mohd Norhakem

doi:10.1504/pcfd.2019.097598

Cited by 3 publications

(2 citation statements)

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“…The mathematical model was described in detail in a recent publication, thus omitted in this paper [38]. The Eulerian-Eulerian multiphase flow with KTGF was chosen for this study [38][39][40]. The Eulerian-Eulerian approach was chosen because it is more suitable to be used for the bubbling fluidised bed (BFB) gasifier type.…”

Section: Cfd Simulation Methodsmentioning

confidence: 99%

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

Isa

Osman

Abdullah

et al. 2020

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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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