FARIAS NETO, G. W.; DE FARIAS NETO, G. W.; http://lattes.cnpq.br/4795395176733951; FARIAS NETO, Gilvan Wanderley de.
Resumo:
Currently, the main steel production route in the world is the Basic Oxygen Oven (BOF),
whose main process is the blast furnace. Besides iron ore, the second most important raw
material used in this process is metallurgical coke. Metallurgical coke is produced by a
process known, popularly, as coking which is a technique of carbonization of a particular
coal mixture. The carbonization of this coal mixture is carried out by heating, in the
absence of oxygen. The main technology used for the production of metallurgical coke at
present is by-products batteries. In the furnaces of this type of battery the heat is
transferred by conduction of the combustion chambers to the coke oven by means of
conduction, that way, the coal as soon as it is charged and that it comes in contact with
the wall of the furnace it begins to receive energy and starts the transformation process in
coke. The main variables measured for the monitoring of the process are the temperatures
of some combustion chambers, because once these temperatures are above the coking
temperature it is possible to estimate which coal is being coking. Therefore, the coke
when being removed from the oven must be cooled rapidly or exposed to an inert
atmosphere. Thus, this work consists of simulating the metallurgical coke production
process by modeling a coke oven with its combustion chambers, aiming at the
optimization of the temperature curve of the combustion chambers, in addition to
studying the energy available in the of coke. The maximum error obtained for the
adjustment of the temperature profile was less than 0.25%, an operational condition
different from that used for the model adjustment was used to verify the
representativeness of the model and in this case the average error of the temperature
profile was 1.48%.