<4. Applications>
4-12
TI 11M12A01-01EAll Right Reserved Copyright © 2004, Yokogawa Electric Corporation
Mar. 14, 2017-00
(1) Naphtha cracking furnace
Thisistherstprocessinapetrochemicalfacility,inwhichtheNaphthasuppliedfromthe
petroleumreneryisheatedandcrackedtoproduceavarietyofproducts.Therewillbenotjust
onebutratheranywherefromsixtotwelveredheaters,eachwithitsownstack.
Analyzer installation
locations
Sample point System type Detector Objective
Fired
heaters
Stack or
convection
L2, L3
H2, H3
Explosion-proof type external
terminal box may also be selected
D1, D2
D5, D6
Combustion
monitoring
F0412.ai
Naphtha
Cracking furnace
Heat Exchanger
Steam
Quench Tower
Caustic wash tower
Depropanizer
Deethanizer
Acetylene Reacter
Hydrogen
Hydrogen
splitter
Methane
Ethylene
Fractionator
Ethylene
Ethane
Demethanizer
Propylene
Cooler
Distillation
Settler
Stripper
Debutanizer
Propylene
Fractionator
Cracking gasoline
Heavy oil
Naphtha cracking furnace
Temperature: Stack: 300 to 600°C
Convection: 600 to 1100°C
Pressure: −0.2 to 0 kPa
Dust: 1 g/Nm
3
max.
LPG
C4