License
License

Breech-Lock Exchanger

High Pressure Shell and Tube Heat Exchangers

Applications
● Pressure above 90 Bar (1300 psia)
● Critical leak-free applications (H2)
● Require access
● TEMA: U-Tube, E, F and occasionally X type shell
– Hydro crackers
– Hydrotreaters
– Gas Compression
– Ammonia Synthesis

Modified TEMA C type high pressure exchanger

Closure design options
● Modified TEMA type C and D
– With GASKET Seals
– With WELDED seals
● LUMMUS ADVANCED BREECH-LOCK EXCHANGERTM (LABLEXTM)
● Other screw plug closures
– Various designs
LUMMUS ADVANCED BREECH-LOCK EXCHANGER® and LABLEX® are registered
trademarks of Lummus Technology Inc

LUMMUS ADVANCED BREECH / LOCK EXCHANGER® LABLEX®

Comparison of TEMA and screw Plug type exchangers

Comparison of TEMA and screw Plug type exchangers
  Screw plug style closure
(most types)
Modified TEMA type C or D
High pressure closure
 
Pressure load Absorbed by the forging,
(eliminating heavy bolting)
Up to 4 high pressure flanges and heavy
bolting
Sealing Replaceable gaskets are used:
Kammprofile
Diaphragm gasket: loaded by pressure
bolts OR Welded diaphragm
Tubesheet gasket: Welded lip seal
loaded by pressure bolts
Adjustment during
operation
Tubesheet-to-shell joint and channel
gasket tightening possible during
operation
No adjustment possible
Hydrotesting Hydro testing of the Tube Bundle with
the channel cover removed (A-Style)
Hydrotesting of tube bundle performed
on full assembly
Opening and closing Special jig required
Tightening of the joints done by small
sized bolts using normal wrenches
No cutting required
Hydraulic wrench required
Any welded seals must be cut
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