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All Rights Reserved. Copyright © 2004, Yokogawa Electric Corporation TI 11M12A01-01E
4. Application<Toc> <Ind>
4.7 Difficult Measurement Applications
a) Glass melting furnace (in-furnace gas)
Oxygen concentration in glass melting furnace stacks can be measured with no problems the
same as in other general combusion exhaust gas applications.
Glass melting furnace (stack): Temperature 0 to 600°C
System block diagram type No: L2, L3
On the other hand when we come to measurement of the gas inside the furnace, continuous
measurement with a direct in-situ zirconia oxygen analyzer (high-temperature system) is either
extremely difficult or impossible due to the dust and fumes from the components of the glass.
However, since continuous measurements are being performed in some cases by the method
shown in the diagram, we offer this for your reference.
F0418.EPS
Glass melting furnace configuration & with detail of ZR22G installation
Temperature: Norm. 1,200°C
Max. 1,300°C
Fuel: Butane gas
O
2
: ⬎5%
Dust level: Normal...Low
During material charging...High
3 to 4 cycles/hour
1
2
3
4
Hot Water
Partial Side View
Pulled by Hood IDF
Sampling Port
Burner
Material Charging Inlet
Cover
Probe (alumina, etc.)
Of non-reducing material, treated as a
consumable item
Note 1: High-temperature detector with
probe adapter, with high-
temperature probe (pipe)
removed
.
Exhaust
Gas
Filter
Fiber Flux Bulk
Replace Periodically
(Note 1)
ZR22G
(with K9471UA)
ZO21P-H
May 31, 2004-00
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