Chauhan, Vishal (2020) Gasification studies of high ash Indian coals using Aspen plus simulation. Materials Today Proceedings, 46. pp. 6149-6155.

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Abstract

A simulation model of high ash Indian coal based Fluidized Bed Gasifier has been developed using Aspen Plus simulation software and the predicted results were validated against the experimental data available in literature for three different types of coals having different ash content which was as high as 48.9%. The hydrodynamic parameters as well as reaction kinetics were both adapted from standard literature data. To complete the gasification modeling, various unit operation blocks available in Aspen Plus was used. The three different coal samples which consisted of different proximate and ultimate analysis values was used for the simulation. Parameters such as steam to coal ratio and temperature were varied while the coal feed rate and air to coal (A/C) ratio were kept constant throughout the simulation process as per the standard literature data. The model predicted very well in determining the final synthesis gas compositions. The simulation experiment also yielded various more critical information which otherwise was not found in the followed literature. The simulation shows that the production of H2 increases with higher steam to coal ratio but follows a decreasing trend after a certain temperature while the amount of CO and CH4 was found to increase with temperature but follows a slight average decreasing trend on increasing the steam to coal ratio. The amount of CO2 formed was found to have increased in the temperature range of 750–950°C which further decreased with the increasing temperature. The carbon conversion efficiency was also found to have increased with increasing temperature as well as steam to coal ratio.

Item Type:	Article
Uncontrolled Keywords:	Fluidized Bed GasifierHigh Ash Indian CoalsAspen Plus SimulationSteam to Coal RatioCarbon Conversion efficiency
Subjects:	Coal Gesification
Divisions:	UNSPECIFIED
Depositing User:	Mr. B. R. Panduranga
Date Deposited:	29 Aug 2022 04:48
Last Modified:	29 Aug 2022 04:48
URI:	http://cimfr.csircentral.net/id/eprint/2528

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