RESEARCH
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My specialization is in solid waste conversion to valuable fuel or chemical through the thermochemical method. He contributed to the scientific community by publishing high-quality research articles in esteemed journals. These publications encompassed experimental and numerical investigations, showcasing the breadth and depth of his research work. He has over six years of extensive research experience spanning across esteemed institutions such as IIT Kanpur, BITS Pilani, NIT Uttarakhand, and MNRE Kapurthala.
Research Areas: Fixed and Fluidized bed biomass gasification and pyrolysis, Computational Fluid Dynamics (CFD), Biodiesel production and utilisation, Alternate Fuels and Emissions, Internal Combustion Engines, Modeling and Simulation.
Doctoral Research works
Air-CO2 and oxygen-enriched air-CO2 biomass gasification
Highlights
The varying CO2, N2, and O2 concentrations in a gasifying agent are used.
CO2 is varied from 0 to 45 vol% at two different O2 concentrations, i.e. 21 & 35 vol%.
Additional CO2 conversion rises from 21.54 to 64.23% for 15 and 30 vol% of CO2.
H2/CO ratio increases from 0.50 to 0.64 with oxygen-enriched air gasification.
H2 + CO increased from 33.46 to 47.52 vol% for O2-enriched air-CO2 gasification.
Downdraft Biomass Gasifier (BITS Pilani)
Biomass Gasification Recation Mechanism
Drying: Moist feedstock + Heat → Dry feedstock + H2O
Pyrolysis: Biomass+Heat→H2+CO + CO2 +H2O +CH4 +CnHm +tar +char
Partial oxidation: C + O2 → CO2 + 406 kJ/g mol
CO + 0.5O2 → CO2 + 284 kJ/g mol
CH4 + 2O2 → CO2 +2H2O + 803 kJ/gmol
2H2 + O2 → 2H2O + 242 kJ/gmol
Boudouard C + CO2 → 2CO – 172.6 kJ/gmol
Water-gas (primary C + H2O → CO + H2 – 131.4 kJ/gmol
Water-gas (secondary) C + 2H2O → CO2 + 2H2 – 88 kJ/gmol
Water-gas shift CO + H2O → CO2 + H2 + 42.3 kJ/gmol
Methanation C+ 2H2 → CH4 + 75 kJ/gmol
Methane reforming CH4 + H2O → CO + 3H2 + 206 kJ/gmol
Tar reforming Tar + H2O → H2 + CO2 + CO + Hydrocarbons+...
Hydrocarbon reforming Hydrocarbon + H2O → H2 +CO2 + CO
Design of Air-Distributor for the Downdraft Gasifier
Highlights
Highlights
A novel air-sparger is designed and installed in the combustion zone of gasifier.
Air-sparger in combustion zone uniformize the temperature and enhance tar cracking.
Air-sparger increases the maximum temperature of combustion and reduction zones.
Lowest tar value (0.027 g/Nm3) is found in gas with air-sparger after gas cleaning.
CFD Modelling of a Downdraft Gasifier
Highlights
Discrete phase model based CFD analysis is performed for Imbert downdraft gasifier.
The kinetics of gasification and volatile breakup reactions are coupled in the CFD model.
The CFD model is validated and found to be in good agreement with experimental data.
The optimum operating range of the equivalence ratio is proposed based on CFD analysis.
Simplified Scheme of Downdraft Gasifier
Thermochemical Conversion of Biomass to Hydrogen
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