All Rights Reserved. Copyright © 2004, Yokogawa Electric Corporation
TI 11M12A01-01E
4-13
4. Applications
<Toc> <Ind>
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.
T0413.EPS
Analyzer installation
locations
Sample point
System type
Detector
Objective
Fired
heaters
Stack or
convection
L2, L3
H2, H3
Explosionproof type external terminal
box may also be selected
2
1
D1, D2
D5, D6
Combustion
monitoring
F0413.EPS
Naphtha
Naphtha Heater
Inorganic Oil
Gasoline
Gasoline Propane H
Propylene
Ethylene
Methane
Rich Gas
Hydrogen Rich Gas
Gasoline
Fractionater
Ethane Heater
Gas Pressur
ization Unit
Demethaniz
e
r
De-ethanizaer
Acetylene Lightener
Eth
ylene F
ractionater
Depropaniz
er
Deb
utaniz
e
r
Prop
ylene F
ractionater
1
2
Naphtha cracking furnace
Temperature: Stack: 300 to 600
°
C
Convection: 110 to 600
°
C
Pressure: –0.2 to 0 kPa
Dust: 1 g/Nm
3
max.
May 31, 2004-00
