Reaction kinetics and producer gas compositions of steam gasification of coal and biomass blend chars, part 1: Experimental investigation

2011 ◽  
Vol 66 (10) ◽  
pp. 2141-2148 ◽  
Author(s):  
Qixiang Xu ◽  
Shusheng Pang ◽  
Tana Levi
Keyword(s):  
Experimental Investigation ◽  
Reaction Kinetics ◽  
Steam Gasification ◽  
Producer Gas ◽  
Biomass Blend

scholarly journals Simulation reaction kinetics and syngas compositions from steam gasification of lignite char

2018 ◽  
Author(s):  
Yusuf Rumbino ◽  
Suryo Purwono ◽  
Muslikhin Hidayat ◽  
Hary Sulistyo
Keyword(s):  
Reaction Kinetics ◽  
Steam Gasification ◽  
Lignite Char

Thermodynamic Modeling of Allothermal Steam Gasification in a Downdraft Fixed-Bed Gasifier

2014 ◽  
Vol 875-877 ◽  
pp. 1782-1793 ◽  
Author(s):  
Wilson B. Musinguzi ◽  
Mackay A.E. Okure ◽  
Adam Sebbit ◽  
Terese Løvås ◽  
Izael da Silva
Keyword(s):  
Fixed Bed ◽  
Equilibrium Temperature ◽  
High Energy ◽  
Steam Gasification ◽  
Energy Carrier ◽  
High Energy Density ◽  
Producer Gas ◽  
High Hydrogen ◽  
Equilibrium Yield ◽  
Downdraft Fixed Bed

A process of converting a solid carbonaceous fuel into a gaseous energy carrier in presence of a gasifying medium at high temperature is called gasification. The resulting gaseous energy carrier, known as producer gas, is more versatile in its use than the original solid fuel. Gasification is widely considered as a more efficient and less polluting initial thermochemical upstream process of converting biomass to electricity. The objective of this study was to investigate the process of allothermal steam gasification in a fixed-bed downdraft gasifier for improved quality (HHV, high hydrogen content) of the producer gas generated. The study involved thermodynamic equilibrium modeling based on equilibrium approach in which the concentrations of the gaseous components in the producer gas at equilibrium temperature are determined based on balancing the moles in the overall gasification equation. The results obtained suggest that the maximum equilibrium yield of producer gas with high energy density is attained at a gasification temperature of around 820°C and a steam/biomass ratio of 0.825 mol/mol. The equilibrium yield was richer in hydrogen at 52.23%vol, and with a higher heating value of 11.6 MJ/Nm3. Preliminary validation of the model results using experimental data from literature shows a close relationship. The study has further shown the advantage of using steam as a gasifying medium towards the improved quality of the producer gas generated.

scholarly journals Kinetic models comparison for non-isothermal steam gasification of coal–biomass blend chars

2010 ◽  
Vol 161 (1-2) ◽  
pp. 276-284 ◽  
Author(s):  
J. Fermoso ◽  
M.V. Gil ◽  
C. Pevida ◽  
J.J. Pis ◽  
F. Rubiera
Keyword(s):  
Kinetic Models ◽  
Steam Gasification ◽  
Models Comparison ◽  
Biomass Blend
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