Dutta , Sudipta and Chauhan, Vishal and Sahu, Gajanan and Chavan, P.D. and Saha, Sujan and Gupta, Pavan Kumar and Dutta , Pashupati (2019) Co-gasification of high ash Indian coal-biomass blends in a pilot-scale fluidized bed gasifier. Biomass Conversion and Biorefinery.

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Abstract

Conventional coal-based technologies are experiencing several disadvantages due to its high ash content as well as a significant amount of greenhouse gas emission. Focus is shifting towards the utilization of renewable resources like biomass. The efficient use of coal and biomass in a clean manner has been the driving force in developing gasification technologies. In the present investigation, an effort has been made to study the gasification performance of selected coal with two types of biomass, namely rice husk and sawdust in different proportions in a pilot-scale bubbling fluidized bed gasifier. Gasification was conducted with a mixture of air and steam at a temperature between 900–950 °C and atmospheric pressure. Mainly, three blends were prepared by adding 10, 20, and 40% of biomass with the selected coal. It was found that up to 40% of biomass loading, gasifier is operated in a trouble-free manner without the formation of tar or any agglomerate by maintaining proper fluidization with smooth and controlled variation in the process parameters like temperature, airflow, and steam flow rate. Due to the synergistic influence between coal and biomass, overall carbon conversion, gas yield, and gas heat value were found to increase with increasing biomass loading.

Item Type:	Article
Uncontrolled Keywords:	Co-gasification High ash coal Rice husk Sawdust Bubbling fluidized bed gasifier
Subjects:	Coal Gesification
Divisions:	UNSPECIFIED
Depositing User:	Mr. B. R. Panduranga
Date Deposited:	19 May 2020 06:48
Last Modified:	19 May 2020 06:48
URI:	http://cimfr.csircentral.net/id/eprint/2167

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