DESIGN AND APPLICATION OF AUTOMATIC CONTROL SYSTEM IN A LABORATORY SCALE FLUIDIZED BED COAL COMBUSTION SYSTEM

Year 2018, Volume: 5 Issue: 2, 49 - 63, 29.06.2018

Hüseyin Topal Yelda Altınsoy Oğuzhan Erbaş

Abstract

The air and
coal ratio must be calculated according to bed material, bed temperature and
emissions to obtain an efficient combustion at energy production foundations.
The amount of air which enters the combustion chamber can change according to
the properties of fuel, moisture in air, outside temperature and air pressure,
so it may change every season, day and hour. During the combustion, high amount of air causes to decreases in
combustion temperature and increases in the NOx emissions, on the other hand,
low amount of air causes to incomplete combustion products like CO. Automatic
control systems are indispensable helpers which are able to reduce emissions,
prevent pollutants and increase efficiency. In this study, the planned
application is collecting flue gas data by sensors which are installed to the
circulating fluidized bed. With the help of these signals the coal combustion
system which has a laboratory size, produces feedback signals according to an
algorithm which has determined before. Thus, the motor of the coal feeder and
air flow fan which control the system
can be actuated. So the plan is, to provide a properly and automatically
working of circulating fluidized bed (CFB) coal combustion system.

Keywords

Energy, Coal, Emissions, Fluidized bed

References

• P. Basu, C. Kefa, L. Jestin, Boilers and Burners: Design and Theory, Mechanical Engineering Series, Springer, (2000)
• Kunii D., Levenspiel O.,“Fluidization Engineering”, Wiley, New York, (1968)
• P. Basu, “Combustion and Gasification in Fluidized Beds”, Taylor and Francis, (2006)