ProductsSolutions

Services

Increased safety through 3D temperature profiling

Increased safety through 3D
temperature profilingin hydrotreater andisomerization units
Benefits at a glance
Reduced risk of unplanned
shutdowns
Increased process efficiency
through:• intelligent, 3-dimensional
sensor routing• No need for disturbing additional support structures• Undisturbed media flow
through the reactor beds
Less invasive solution withoutdedi­cated ring support frame
More efficient process flow
through the catalytic beds

The customer, a producer of sustainable aviation fuel and renewable diesel, seeked to increasesafety in seven green field catalytic
bed reactors (Isomerization, Hydrotreatment, Hydrogenation, PreReformer) in their plant. Overall,safety was the most important point
for the customer, given that the devices had to be used in reactors withhazardous media, high temperatureand pressure.
The results• Long-lasting solution considering aturnaround period of 5 years• Solution enables the customer to establish a precise temperature profile• Maximization of process efficiency• Yield of a high-quality product according to strict industry
specifications• Increased safety: Leakage
prevention/detection/management

Customer challenge The harsh process conditions of approximately 58
bar and 400 °C (752 °F) under which
the reactor is operating, as well as thepresence of corrosive chemicals suchas Hydrocarbon and H2, called for arobust and long-lasting solution.
Our solution Endress+Hauser manufactured a highly complex Temperature Engineered Solution. Special alloymaterial and the iTHERM TMS02
MultiSens Flex in advanced design
were the perfect recipe for a long-lasting and safe solution. The customer’smaterial expert selected the suitablespecial alloy (Inconel 625 Grade 2,
final annealing 1100°C (2012 °F)),
while Endress+Hauser engineered thethermometer design. The iTHERM
TMS02 MultiSens Flex in this casecomes without protecting thermowells or a guiding tube. A special MgO
cable with extra thick walls is in directcontact with the process.

Advanced design
The advanced design of theiTHERM MultiSens TMS02 was
the winning argument forthe customer, and caught
their attention.
• Increased maintenance level:
extension cables connected toremovable stump-inserts thatcan be individually inspected andreplaced• The release of the insert-stump
is done by means of thecompression fittings placed on
diagnostic chamber head. Aninterruption is located inside thediagnostic chamber and allows to
any leakage to be vented into thechamber and be detected.
• The leakages can come fromthe welded joints between thesensors and process connection
or from the sensor itself. Thisphenomenon might occur when
unforeseen high corrosion rates
compromise the insert sheath
integrity.
• With this feature an unforeseencrack on the sensor’s sheath will
be collected inside the diagnostic chamber without external
leakageDevices:• 14 x iTHERM TMS02 MultiSens
Flex in advanced design (4 and 12measuring points) for Isomerization, Hydrotreatment units• 9 x iTHERM TMS11 MultiSens
Linear Multipoint (3, 35 and 42measuring points) for 		Hydrogenation, Pre-Reformer
Services:• 3D routing design in accordancewith reactor internal supplier• EPC supervisor visit in Pessano’s
facility during the production/testphase• Continuous professional support
during all phases of the project• FAT• Installation supervision 		(spread in a ten month period)

Testings and Documentation:• Dye penetrant test• Ultrasonic inspection• X-ray analysis on diagnostic chamber and on TC hot joints• Internal helium leak test
• PMI test
• TC calibration• Welding documentation acc. toTS01279T/09 (including weldingmap) with PQRs PED certification

AI01385T/09/EN/01.23

www.addresses.endress.com