Projects
Projects under the European Funds
"Pre-drying of brown coal for energy purposes"
Project co-financed by the European Regional Development Fund under the Operational Programme Innovative Economy
On behalf of Poltegor-Institute : Jerzy Alenowicz Ph D Eng
phone. 71 348 81 35
e-mail:
Budget of Poltegor-Instytut:: : PLN 537 000
Wroclaw University of Technology – Project Coordinator
Opole University of Technology
“Poltegor-Instytut” Institute of Opencast Mining
A pilot plant for pre-drying of coal is a result of research and activities that were carried out by Wrocław University of Technology, Opole University of Technology and “Poltegor-Institute”. The installation was built at the Institute.
Computer simulations and then small-scale laboratory experiments led to the expansion of the scale of the project and modeling the installation with use of the Inventor program and then building it in the open air with roofing in the scale enabling another qualitative improvement of research.
The pilot plant consists of steel closed rectangular and square profiles that are intended for welded and screw joints.
The basis of the entire drying process is a fan that deflects air through the canals up to the heater. The heated air gets into the expansion box from where it gets to the fluidized chamber where coal for drying is delivered by a screw conveyor. Dried coal is collected by a screw conveyor and finer fractions are collected by dust collectors.
The use of fluidization for pre-drying of brown coal brings significant benefits along with relatively small problems that are associated with this method. Intense heat and mass transfer between warm air and moist coal is very important here and results in very good drying effects
.
