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Coal type, temperature and gasifiying agent effects on low-rank coal gasification using CFD method

Md. Isa, Kamariah and Osman, Kahar and Abdullah, Nik Rosli and Othman, Nor Fadzilah and Ahmad, Nurulnatisya (2020) Coal type, temperature and gasifiying agent effects on low-rank coal gasification using CFD method. CFD Letters, 12 (10). pp. 111-127. ISSN 2180-1363

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Official URL: http://dx.doi.org/10.37934/cfdl.12.10.111127

Abstract

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.

Item Type:Article
Uncontrolled Keywords:CFD, Gasifying agent
Subjects:Q Science > QE Geology
Divisions:Biosciences and Medical Engineering
ID Code:91136
Deposited By: Widya Wahid
Deposited On:31 May 2021 13:29
Last Modified:31 May 2021 13:29

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