Experimental determination of airflow resistance coefficient of porous plates for fly ash air-slide pneumatic transport

Abstract

Different porous materials are used for the transport of discharged fly ash from electrostatic precipitator in air-slide pneumatic conveying system. The knowledge of physical, mechanical as well as flow properties of these porous materials is needed for optimal design of plants for pneumatic transport. Many different samples of the porous plates were tested at the Faculty of Mechanical Engineering in Belgrade, in period of 1998-2006, in order to determine their characteristics. The porous plate, made by local producer (Nikodije Stojanovic Tatko, Prokuplje) which is often used at power plants in Serbia, has been investigated. Experimental determination of characteristics of porous plates (pressure drop through plate and airflow resistance coefficient) defined through air velocity, thickness and density of sample were basic aim of this research. Application capability of these plates for pneumatic transport regarding their mechanical resistance and air flow resistance through plate has been discussed based on the mentioned parameters.