Engineered Solutions Catofin® Applications - … 99 - Catofin Brochure.pdfEngineered Solutions for...
-
Upload
truongdang -
Category
Documents
-
view
226 -
download
3
Transcript of Engineered Solutions Catofin® Applications - … 99 - Catofin Brochure.pdfEngineered Solutions for...
Engineered Solutions for
Catofin® Applications
LOYA
L C
UST
OM
ER
SIBN ZAHR; 1 Jubail, Saudi Arabia
IBN SINA; Jubail Saudi Arabia
Texas Petrochemicals; Houston, Texas, USA
Pemex; Coatzacoalcos, Mexico
Brunei, Borneo; Royal Dutch Shell/Japan Gasoline Co.
Dugas; Abu Dhabi
Global Octanes; Deer Park, Texas, USA
Tasnee; Jubail, Saudi Arabia.
Advanced Petrochemicals; Jubail, Saudi Arabia
Petrologistics; Houston, Texas, USA
IBN Zahr 2; Jubail, Saudi Arabia
Tianjin Bohua Petrochemical Tianjin, PR China
Super Octanos; Barcelona Venezuela
Significant Projects
Significant Projects
PE
TR
OL
OG
IST
ICS
Houston, Texas USA
The project is currently the largest propane dehydrogenation plant in the
world with 137 expansion joints supplied by Senior Flexonics Pathway in an
expedited time frame.
Randy Miller, P.E., Vice president of Engineering had this to say about the project:
“Due to market conditions, there was strong motivation to construct the facility
in the shortest time frame... SFP was chosen because of their engineering expertise, experience with Catofin® applications, good quality and last but not least, their capacity to manage such a project and deliver on a tight schedule...
Petrologistics is more than pleased with Senior Flexonics Pathway. They are a
good supplier with a depth of engineering talent that is necessary for the design
of extreme service expansion joints and a demonstrated capacity for large project
execution.”
AD
VA
NC
ED
PU
RG
ING
& L
INE
R D
ES
IGN
Back bevel, plug welding & special insulation geometry
The Catofin® process has a number
of expansion joints which are are
purged. This is typically accomplished by
injecting purge gas through the 8 purge
ports at a pressure above the system
operating pressure. This floods all of
the internal spaces with purge gas and prevents formation of hard coke which can
permanently damage the expansion joint
bellows and other internal components.
Liners must be designed for high flow velocities,
mechanical loading and thermal stresses. Structurally
sound liner design is utilized to accommodate vibration and
buffeting from high velocity media flow. The traditional
liner attachment method has proven to be inadequate for
high temperature Catofin service. For Catofin service a
very robust liner attachment method is used to insure
long term success.
HIN
GE
DE
SIG
N
More than 150 expansion in each unit
2-Ply testable bellows
321H Bellows (annealed after forming)
321H Pipe and liners
T309 Liner seals
Internal insulation to keep the bellows temperature below the creep range
External insulation to optimize the bellows temperature and protect against weather effects
Slotted hinges for weight support
Movement indicators
Shipping bars to secure the length during shipping
The two most common types of expansion joints in
Catofin® service are in the inlet and outlet headers.
Shown here is an Inlet Header expansion joint in the Regen Air
System. This type of expansion joint operates at approximately
at 700 o C (media temp) with 140 m/sec flow velocity.
Design features incorporated in this unit are:
DU
GA
S
Dubai
After 15 years of successful service, several
expansion joints at the Dugas plant needed
repairs. In 2010, SFP worked with Dugas to de-
velop a repair plan for these expansion joints. SFP
supplied bellows, monitoring equipment, insulation
and other hardware to upgrade the existing expan-
sion joints. SFP, along with our local partner Yusuf
Bin Ahmed Kanoo, provided a field service team
consisting of supervisors and welders to perform
the in-situ refurbishment of the expansion joints.
As with any large field operation, unexpected
challenges were encountered. With SFP’s elite
field service personnel and local partners, these
challenges were overcome and the expansion
joints were successfully repaired.
Today, SFP is the world leader in the design and fabrication of expansion joints for the Catofin®
processes and will continue to provide solutions to
meet our customer’s needs.
TA
SNE
E
Jubail, Saudi Arabia
SEPC has a unit for production of ethylene and propylene and
they unite for the production of polyethylene, and propylene.
The Company’s annual production capacity is one million tons of
ethylene, 285.000 tons of propylene and 400.000 tons of high
density polyethylene (HDPE), and 400.000 tons of low density
polyethylene (LDPE).
Production of ethylene/propylene goes back to August 2008, and
production of HDPE started in November 2008, and that of LPDE
in March 2009. The polyethylene plants are the largest of their
kind worldwide.
All expansion joints were supplied by Senior Flexonics Pathway.
FIN
ITE
ELE
ME
NT
AN
ALY
SIS
FEA Shown here is what we call the double expanded pipe, a special transition
shape that is essential for Catofin applications. Thermal stress is the main
consideration because there is a very large temperature gradient between the
first expansion and the bellows attachment from 650 o C to 288 o C. FEA
studies are used to fully evaluate transitions that are used for Catofin service.
DO
UB
LE P
IPE
EX
PA
NS
ION
Thermal stress
The stress analysis model considers the effect of
both differential thermal expansion and internal
pressure. The maximum stress in the model is below the
CBI Lummus thermal stress limit. The low stress was achieved by using double expanded pipe. The same model with single expanded pipe will have a stress that exceeds the CBI Lummus stress limit. There are very few
alternatives and the double expanded pipe is the best
solution to satisfy the thermal stress limits.
The model shown here was created
to match the actual geometry of an
operating Catofin® expansion joint. Material
properties are based on empirical data
and are temperature dependent. A heat
transfer analysis was performed to find the
temperature at each node in the model. The
HT analysis considers radiation, conduction,
and convection. The temperature plot
shows a much lower temperature at the
bellows attachment. The large temperature
difference produces thermal stress in the
pipe. The nodal temperatures are transferred
to the stress analysis model.
EX
TE
NS
IVE
TE
STIN
GCreep range
SFP has performed extensive high temperature cycle testing
which has resulted in the development of proprietary design and manufacturing processes. Above is a test fixture which was
developed for a major Engineering firm to perform analysis on
bellows operating in the creep range, the range of temperatures
that exist in Catofin service.Catofin® is a registered trademark of CBI Lummus
RO
UN
D T
HE
CL
OC
K S
ER
VIC
E Emergency response team
For over 40 years Senior Flexonics Pathway’s reputation has been built on the ability to exceed client expectation
on “Emergency requirements”. Our best performance is
same day shipment. Emergencies happen… when they do,
we are ready to respond to your needs. Senior Flexonics
Pathway’s culture is molded around our ability to deliver
expedited shipments. Manufacturing redundancies, 24 hour
staffing and a client response team of customer service,
engineering and production personnel on-call 24 hours a
day 365 days a year will continue to be a Senior Flexonics
Pathway exclusive.
Over the years, Senior Flexonics Pathway
has provided our customers with on-
site services comparable to none. Our field
service group consists of highly-qualified
technicians and engineers specialized in
solving expansion joint installation problems.
As a leader in our industry, we are confident you will find the most efficient work force to meet your field expansion joint
requirements.
Senior Flexonics Pathway2400 Longhorn Industrial DriveNew Braunfels, Texas 78130P: 830.629.8080 F: 830.629.6899
sfpathway.com
Metal Expansion Joints
Fabric Expansion Joints
Dampers
On-Site Services
Engineering Services