학술논문

The influence of variable operating conditions on the design and exploitation of fly ash pneumatic transport systems in thermal power plants
Document Type
article
Source
Brazilian Journal of Chemical Engineering. December 2008 25(4)
Subject
Electrostatic precipitator
Pulverized fly ash
Air-slide conveying system
Language
English
ISSN
0104-6632
Abstract
The efficiency of an air-slide pneumatic conveying system depends, first of all, on several basic elements chosen or calculated during the design of a plant: air-slide design parameters, air mover characteristics, as well as the physical and chemical properties of the material to be transported. However, during the exploitation of this type of system which is used for handling ash in thermal-power plants, either gradual and/or sudden changes in the operating conditions can arise. This may be due to changes both in the proportion of ash content, and in the flow characteristics of the porous membrane. The consequences of changes in these conditions on the performance of the ash handling system are analyzed, based upon the results of the experimental work carried out on the test rig at the Faculty of Mechanical Engineering in Belgrade, and upon the on-site measurements at the thermal-power plant "Nikola Tesla B".