الفهرس | Only 14 pages are availabe for public view |
Abstract Gasification as 3 thermochemic31 conversion process of SOlid \’Jastes and biomass into gaseous fuels has been considered in the present work. F’artial Combustion gasification process was studied using an updraft~ air blown, ”ixed bed gasifier. Set of experiments were carried out to study the effect of 3ir flow rate and fuel particle size on the performance of the gasifier. The gasifier used in experiments was made up of a steel cylinder of 20 cm inner diameter. and 100 cm long resting on a preforated steel plate as a grate. The inner surface of this cylinder was coated by a clay layer of 1.5 cm thickness. Wood cub es of different cube sides ( 0.5~ 1.0, 1.5. and 2.0 Cm ) have been used as the material to be gasified. Experiments were carried out at four different air flow rates 430. 515, and 1035 kg/ m2 h ) . To study the effect of the above two parameters on the gasifier performance~ the calorific value of the produced gas and its composition were determined at different operating conditions. The calorific value was determined using Junikers calorimeter and was noticed to increase with the decrease of the particle size The calorific value was found to increase also with the increase of the air flow rate to reach a maximum value at a certain point and starts deteriorating thereafter, This point was found to be at air flow rate of 735 kg / m2 hr. The calorific |