<4. Applications>
4-10
TI 11M12A01-01EAll Right Reserved Copyright © 2004, Yokogawa Electric Corporation
Mar. 14, 2017-00
(2) Cement kiln (cyclone outlet gas)
Cement production consumes approximately 100 liters or more of fuel (heavy oil) per ton of
cement. Thus, combustion management by means of zirconia oxygen analyzers has become a
critical element.
There are cases in which O
2
, CO, and CO
2
measurements are performed using a sampling
system at the kiln outlet.
Sample point System type Detector Objective
Cyclone outlet L2, L3 D4, (D3) Combustion monitoring
Cement kiln
Gas temperature: 350 to 400°C
Gas pressure: –3 to 5 kPa
Dust: ≧200 g/Nm
3
CO: ≧0.2%
F0410.ai
NSP Cement Kiln
Exhaust Gas
Stack
Clay
Limestone
Limestone
dryer
Clay
dryer
Water
Stabilizer
Mill
: Material flow
: Gas flow
Burner
Air-draft
Combustion
Furnace
Bucket Elevator
Rotary kiln
Exhaust gas
Electric Precipitator
Cooler
Exhaust
Burner
Clinker cooler
Clinker
Electric Precipitator
Stage 4
Cyclone
Stage 1
Cyclone
Stage 2
Cyclone
Stage 3
Cyclone
SP
FF
SF
Secondary Air Duct
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