Difficult Measurement Applications - YOKOGAWA ZR22G Technical Information

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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.
Temperature: Norm. 1,200°C
1
Max. 1,300°C
Fuel: Butane gas
2
O :
3
2
Dust level: Normal...Low
4
During material charging...High
3 to 4 cycles/hour
All Rights Reserved. Copyright © 2004, Yokogawa Electric Corporation
Glass melting furnace configuration & with detail of ZR22G installation
5%
Hot Water
Partial Side View
Exhaust
Gas
(Note 1)
Note 1: High-temperature detector with
Probe (alumina, etc.)
Of non-reducing material, treated as a
consumable item
Pulled by Hood IDF
Sampling Port
Burner
4. Application
Filter
Fiber Flux Bulk
Replace Periodically
ZR22G
(with K9471UA)
ZO21P-H
probe adapter, with high-
temperature probe (pipe)
removed .
Cover
Material Charging Inlet
F0418.EPS
TI 11M12A01-01E May 31, 2004-00
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