M.RAVIKUMAR2019 RESUME.pdf (original) (raw)
Related papers
IJERT-Modeling Of Rice Husks Gasification In A Fluidized Bed Reactor
International Journal of Engineering Research and Technology (IJERT), 2013
https://www.ijert.org/modeling-of-rice-husks-gasification-in-a-fluidized-bed-reactor https://www.ijert.org/research/modeling-of-rice-husks-gasification-in-a-fluidized-bed-reactor-IJERTV2IS70099.pdf Gasification of biomass has increasingly become a promising alternative to direct combustion. The paper presents a study where rice husks were gasified in a fluidized bed using air to determine gas yield and composition as a function of equivalence ratio. Mathematical modeling of the gasification process is based on the computational fluid dynamics (CFD) technique where the conservative transport equations were modeled in a fluidized reactor coupled with the kinetic equations for gasification and combustion of rice husks. The model results compared well with published experimental data, therefore indicating that the model can be a useful tool for the prediction of performance variables of fluidized bed reactor for rice husks gasification process.
Utilization of Agriculture Waste as Energy Resource: Rice Husks Gasification
2013
Agriculture wastes can potentially be used as energy supply on the continuous seeks for renewable energy resources. Such a subject is highly aligned with the idea of merging the current energy policy for a more sustainable one, substituting the fossil base fuels used nowadays. Since agriculture wastes are increasing due to the increase of food production in several countries, the application of such wastes as renewable energy resources can be used in together with gasification technology for syngas production, which can then be applied for power generation. Since rice husks are a surplus in many producing countries, such energy resource could be used for electricity production using combined cycles with gasification plants. This paper presents an investigation using rice husks applied as fuel in a fluidized bubbling bed for syngas generation. Numerical simulations were performed using the software CSFMB (Comprehensive Simulator of Fluidized and Moving Bed Equipment) showing that suc...
MATHEMATICAL MODELLING TO PREDICT THE COLD GAS EFFICIENCY OF RICE HUSK IN BIOMASS GASIFIER
In the present investigation, an empirical relationship was developed to predict the process of generating fuel gas with better quality through gasification of biomass in a fluidized bed reactor using response surface methodology (RSM). The experiments were performed in a pilot scale autothermal gasifier developed in the laboratory. Rice husk used as the feed stock and the air was used as the fluidizing and gasifying media. The present research incorporated the parametric study of process parameters such as bed temperature (T), pressure (P), equivalence ration (R), feed rate (F) and particle size (S) which influence the cold gas efficiency. Higher equivalence ratio also resulted in more gas yields and cold gas efficiency due to increase in the exothermic reactions.
Sustainability
This study aimed to enhance the thermal characteristics of rice husk biomass through torrefaction conducted in a fixed-bed reactor. A novel approach was employed by circulating the gas produced within the system, instead of using traditional nitrogen. The torrefaction process took place at temperatures ranging from 200 to 320 °C, with different residence times of 10, 20, and 30 min for heat exchange. Quantitative analysis of the torrefied biomass revealed several notable improvements. The higher heating value of the biomass increased significantly, reaching 23.69 MJ/kg at a temperature of 320 °C and a residence time of 30 min. This enhancement indicates the effectiveness of torrefaction in increasing the energy content of the biomass. Furthermore, the torrefied biomass exhibited a remarkable reduction in hygroscopicity, with reduction by as much as 92 wt% compared to raw rice husk biomass. This reduction implies that the torrefied biomass is more resistant to moisture absorption, ma...