Effect of Size of Lignite on Gas Generation Rate, Calorific Value of Gas and Gasifier Efficiency of Downdraft Gasifier

Abstract

The remote regions of India either face severe shortage of power or are not connected with grid system. For villages/habitations, where grid connectivity would not be feasible or not cost effective, off-grid solutions based on stand-alone systems may be taken up for supply of electricity so that every household gets access to electricity. A small capacity downdraft gasifi er could be installed to produce of Producer Gasifier by gasifying lignite. Producer gas can be burned as a fuel gas in an internal combustion gas engine or gas turbine for electricity generation in villages. It observed that very little information on parametric in uence of gas generation rate, fuel variation and particles size variation on performance and temperature level of downdraft gasi er is available in literature. While studying the effect of gas generation rate, the choice of particle size is an important factor for owability study and performance of gasi er, based on this realization This thesis presents the result of the experimental investigations carried out using lignite to investigate the effect of fuel size variation on gas generation rate and performance parameter in term of calori c value of gas and gasi fier e ffiency in downdraft gasi er. The present work also investigates the effect of lignite size variation on temperature pro le at diffeerent zones in gasi er. For this purpose different size of lignite as the ranges from 16mm to 19mm, 19mm to 22mm and 22mm to 25mm are selected. it is observed that calori c value and e ciency is highly dependent on feedstock size.