B) Naphtha Cracking Furnace - YOKOGAWA ZR22G Technical Information

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b) Naphtha cracking furnace

This is the first process in a petrochemical facility, in which the Naphtha supplied from the petro-
leum refinery is heated and cracked to produce a variety of products. There will be not just one
but rather anywhere from six to twelve fired heaters, each with its own stack.
Analyzer installation
1
2
Naphtha
Naphtha Heater
2
Ethane Heater
All Rights Reserved. Copyright © 2004, Yokogawa Electric Corporation
Sample point
locations
Fired Stack or
heaters convection
Inorganic Oil
Gasoline Propane H
Naphtha cracking furnace
Temperature: Stack: 300 to 600°C
Convection: 110 to 600°C
Pressure: –0.2 to 0 kPa
Dust: 1 g/Nm
System type
L2, L3
H2, H3
Explosionproof type external terminal
box may also be selected
Gasoline
Fractionater
Gasoline
Methane
Rich Gas
3
max.
4. Applications
Detector
D1, D2
D5, D6
Hydrogen Rich Gas
TI 11M12A01-01E May 31, 2004-00
4-13
Objective
Combustion
monitoring
T0413.EPS
Propylene
Ethylene
F0413.EPS