Open AccessThe performance of a fluidized particulate feeding system with multiple discharge sections
Author(s) -
J. P. Tureso,
Fernando Eduardo Milioli,
Geraldo Lombardi
Publication year - 2003
Publication title -
journal of the brazilian society of mechanical sciences and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.431
H-Index - 40
eISSN - 1806-3691
pISSN - 1678-5878
DOI - 10.1590/s1678-58782003000100007
Subject(s) - particulates , distributor , repeatability , volumetric flow rate , materials science , airflow , injector , fluidized bed , volume (thermodynamics) , environmental science , mechanics , waste management , chemistry , mechanical engineering , engineering , chromatography , thermodynamics , physics , organic chemistry
A particulate feeding system based on air flluidization principles was developed at the Thermal and Fluids Engineering Group at EESC-USP. The system is basically formed of a cylindrical chamber comprising two levels of fluid bed distributor plates. The performance of the system was addressed. Repeatability experiments were performed in order to check out for the possibility of solids feeding control through a sphere valve which controls the air feed rate. Silica sand particles of three different size were used, with mean diameters of 152, 287 and 484 µm. Experiments showed that the total particulate discharge depends on the primary air feeding rate, the distance between the exit of the feeding hopper and the primary air distributor plate, and the particulate diameter, but independs on the secondary air feeding rate. The system was observed to be of difficult control and showed poor repeatability. However, the system was found to be an excellent device for distributing the flow of solids throughout several discharge sections. For the operational conditions considered and air volumetric flowrates above 3×10-3 m³/s the deviation on the particulate mass flowrate through a given discharge section related to the average value through the four sections of the injector was always below 5 %