Wet Coal Drying System

Wet Coal Drying System
Authors : Shubham Sudhakar Fawade
Publication Date: 08-08-2017


Author(s):  Shubham Sudhakar Fawade

Published in:   International Journal of Engineering Research & Technology

License:  This work is licensed under a Creative Commons Attribution 4.0 International License.

Website: www.ijert.org

Volume/Issue:   Volume. 6 - Issue. 08 , August - 2017

e-ISSN:   2278-0181

 DOI:  http://dx.doi.org/10.17577/IJERTV6IS080032


Coal is the world's most important source of energy fueling around 40% of the power stations. Coal moisture has a large negative effect on boiler efficiency, station service power and is responsible for higher coal flow rate, higher flue gas flow rate, increased operating and maintenance cost. Commonly used dryers are fluidized bed, vibrated bed, flash dryers and rotary dryers are high temperatures dryers. Such high temperatures should not be used for coal drying as it is susceptible to spontaneous ignition. Hence to overcome this entire problem, we have designed a system which will not require one separate unit. Also this system uses waste heat from chimney which was going waste to atmosphere. In this system, we are using forced convection. Firstly atmospheric air is blown by blower through chimney where counter flow heat exchange takes place and atmospheric air gets heated up to 42°c which is sufficient to remove percent of moisture from coal. This heated air from chimney is taken through pipe line up to conveyer belt and it is sprayed over running conveyer belt. Hence it does not require one separate unit. Running cost in this system is to run blower only.


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