Applications; Boiler; A) Package Boiler - YOKOGAWA ZR22G Technical Information

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4.

Applications

This section takes up typical application examples for the zirconia oxygen analyzer. These
individual applications are structured as follows.
Application examples:
Sample gas condition examples: Examples of sample gas conditions, and block diagrams and
4.1

Boiler

a) Package boiler

This is the most common application. Although the system is generally used for combustion
monitoring, there are also cases in which it will be used for VVVF or other such combustion
control schemes.
Boiler furnace outlet or
economizer outlet
Wall Tubes
All Rights Reserved. Copyright © 2004, Yokogawa Electric Corporation
Sample point
Viewport
Gas Flow
Combustion
Chamber
Flame
Top View
Burner
Front View
Overview of individual devices, and sample points.
type numbers for zirconia oxygen analyzer systems to be used
under those conditions.
System type
L1, (L2)
Package boiler
Gas temperature: 150 to 300°C
Gas pressure:
Dust: 1 g/Nm
Fuel: Fuel oil, kerosene, or gas
Main Tubes
Blower
Steam Drum
Burner
Water
Drum
Side View
4. Applications
Detector
D1, (D2) Combustion monitoring
0.5 kPa
3
Soot Blow Nozzle
F0401.EPS
TI 11M12A01-01E
4-1
Objective
T0401.EPS
May 31,2004-00