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Performance studies on co-gasification between coal/sawdust and coal/wood pellet using RSM

Fatin Zafirah, Mansur and C. K. M., Faizal and Monir, Minhaj Uddin and Noor Asma Fazli, Abdul Samad and Atnaw, Samson M. and Shaharin Anwar, Sulaiman (2020) Performance studies on co-gasification between coal/sawdust and coal/wood pellet using RSM. In: IOP Conference Series: Materials Science and Engineering, Energy Security and Chemical Engineering Congress, 17-19 July 2019 , Kuala Lumpur, Malaysia. pp. 1-15., 736 (022085). ISSN 1757-899X

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This work presents the comparative study between raw biomass and pre-treated biomass co-gasified with coal with the aimed to investigate the reliability of the pre-treated biomass to enhance the gasification performance. Sawdust and wood pellet (the pelletization form of sawdust) and blends of these two feedstocks with sub-bituminous coal, were gasified in an air atmosphere using an external heated fixed-bed downdraft gasifier system. Response surface methodology (RSM) incorporating with the central composite design (CCD) was applied to assist the comparison of all operating variables. The independent variables were investigated within the specific range of coal ratio from 25 to 75%, gasification temperature from 650 to 850 °C and equivalence ratio from 0.20 to 0.30. Meanwhile, the dependent variables were evaluated on the H2/CO ratio in the syngas, higher heating value of the syngas (HHVsyngas) and gas yield (GY). The results revealed the H2/CO ratio in the syngas, HHVsyngas and GY of more than 1.585, 6.072 MJ/Nm3 and 2.464 Nm3/kg were achieved, respectively for both co-gasification. From the results, the H2/CO ratio in the syngas and GY from co-gasification of coal/wood pellet shows a higher value than that of the coal/sawdust. However, for the HHVsyngas, co-gasification of the coal/sawdust possess higher value with merely 1% difference from the coal/wood pellet. Therefore, co-gasified coal with wood pellet has the potential to be substitute with the sawdust.

Item Type: Conference or Workshop Item (Lecture)
Uncontrolled Keywords: Co-gasification; sawdust; wood pellet; coal; Response surface methodology (RSM)
Subjects: T Technology > TP Chemical technology
Faculty/Division: Institute of Postgraduate Studies
Faculty of Chemical and Process Engineering Technology
Depositing User: Noorul Farina Arifin
Date Deposited: 04 Jun 2020 00:05
Last Modified: 04 Jun 2020 00:05
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