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Infrared imagery
and analysis/Infravörös képalkotás
és képfeldolgozás
DETERMINING
THE INFRARED THERMOGRAPHY WITH
THERMAL DIFFERENCE PRINCIPLE AT
ERDEMIR
Fikret CAGLAYAN,
Abdulkadir OZDABAK, M.
Emre ERTEM
Eregli Iron & Steel Works
Inc.
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| Abstract:________________________________________________ |
Eregli
Iron & Steel Works Inc.,
Erdemir for short, the largest of
Turkey’s integrated steel
plants, went into operation in
1965, in Eregli, a small harbor
town on the Black Sea coast.
In Erdemir, equipment failures,
corrosions, heat losses and wear
of refractors are determined by
Thermal Camera since 1994. It is
used as a predictive maintenance
tool. Obtained data are analyzed
with the Irwin-5.1 software
program and results were
distributed to related
departments via company Intranet
system.
Especially, thermal differences
in cooling systems helps to
calculate heat losses that are
directly related to energy
consumption using this output,
Sankey Diagrams are drawn easily.
Heat
Input
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Item
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Heat
quantity
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%
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Combustion
heat of fuel Qg
|
69.270.094
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100
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Total
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69.270.094
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100
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Heat
Output
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Item
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Heat
quantity
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%
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Heat
diffusion from furnace
wall
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323.351
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0,47
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Heat
loss of exhaust gas
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15.239.421
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22,0
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Heat
loss of cooling water
pipes
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2.008.259
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2,90
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Heat
capacity of Slab
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51.699.063
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74,63
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Total
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69.270.094
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100
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Re-heating
furnace energy efficiency
: % 77,63
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As a result
of our studies, We have
got %74.63 energy
efficiency at the slab
furnace III, in addition
to this, we have
calculated %0.47 heat
losses from the furnace
wall and have a chance to
find the exact point of
heat losses on the wall
by using thermal camera. According
to our results, some
precaution has been taken
for reducing fuel
consumption and having
more efficiency by using
by-product gasses. For
reducing our heat losses,
high quality insulator
material is used in the
zones which in heat
losses most.Especially,
after changing isolator
materials of cooling
pipes at slab furnace,
fuel is saved and
maintaining period of the
furnace is made longer
and more efficiency
because of refractor
material.These thermal
camera measurements shows
the thickness of
refractor on the furnace
wall, and it gives us
some information to have
decision about
maintaining before
starting. In addition,
the torpedoes which carry
the hot metal, is
controlled for corrosion
of refractor thickness by
thermal camera
measurements. Also heat
losses can be found by
using the camera at all
departments.
These
thermal camera
measurements shows the
thickness of refractor on
the furnace wall, and it
gives us some information
to have decision about
maintaining before
starting.
In addition, the
torpedoes which carry the
hot metal, is controlled
for corrosion of
refractor thickness by
thermal camera
measurements. Also heat
losses can be found by
using the camera at all
departments.
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M. Emre
ERTEM, Abdulkadir
OZDABAK, Fikret CAGLAYAN,
Eregli
Iron & Steel Works
Inc.
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Uzunkum
Cad. No:7 67330 Kdz.
Eregli-Turkey
Phone: +90 372 3293817 -
+90 372 3295960
Fax: +90 372 3231462
Homepage: www.erdemir.com.tr
M. Emre Ertem
Ass. Energy Manager
E-mail: meertem@erdemir.com.tr
Abdulkadir Ozdabak
Energy Manager
E-mail: aozdabak@erdemir.com.tr |
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