YOKOGAWA EXAxt ZR22G

<4. Applications>
4-13
TI 11M12A01-01E
Mar. 14, 2017-00All Right Reserved Copyright © 2004, Yokogawa Electric Corporation
(2) Petroleumreneryprocessredheaterexample
Therearetwopossiblelocationsforthesamplepointinredheatersforpetroleumreningand
petrochemicals: in the stack, or in the vicinity of the furnace outlet (convection zone).
Sample point System type Detector Remark
Stack L2, L3 D1, D2
Explosion-proof type with terminal box
may also be selected.
Furnace outlet
(convection zone)
H2, H3 D5, D6
Analyzer installation
locations
Sample point Temperature
2
1
Stack
Convection
Approx. 300 to 500°C
Approx. 600 to 900°C
Outlet
Outlet
Outlet
Inlet
Inlet
Inlet
Convection SectionRadiant Heating Section
Steam
Generator
Section
Process Fluid
Preheat
Section
Steam
Superheater
Section
F0413.ai
1
1
2
2
Furnace
Window Box
Air Preheater
Stack
Draft Blower Exhaust Blower