Breech Lock

HISTORY OF BREECH-LOCK CLOSURE 

Invented and developed in 1960 by Standard Oil Co. of California . The first breech-lock was put into operation in 1966.

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Rights of technology remain with Chevron Research Company of California.

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In 1982, ABB LUMMUS HEAT TRANSFER became a licensee for the worldwide marketing of high pressure Breech-Lo Breech-Lock ck heat exchangers.

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Over 600 Breech-Lock high pressure heat exchangers are in operation worldwide. Approximately 300 have been manufactured by IMB.

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Finds applications in refinery units operating at high pressure and temperature with hydrogen rich streams such as Hydrocrackers.

EXCHANGER BATTERY

Exchanger Assembly

Sectional view

 Applications High Temperature/High Pressure Units: Hydrocrackers / Hydro-treaters Gas Compression  Ammonia Synthesis Miscellaneous 

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MAIN FEATURES 

Reliable High Pressure Performance Sealing

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Easy Dismantling/Reassembly for Inspection

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 Avoidance of High Stressed Zones in Pressure Parts In Service Seating of Internal Gaskets

Closure Features and Advantages 

Hydrostatic Load Of Channel Cover Is Absorbed by the Channel

Forging 

No Threaded Holes in Forging or in the Cladding

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Tightening of Gasket by Relatively Small Bolts

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Spiral Wound Gaskets are Used in the Girth Joints

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Channel Cover is Relatively Thin and Light

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Re-Tightening of Tubesheet Gasket During Operation Possible.

 Assembly of multiple shells

Sectional View

Sectional View

Channel side view

HASSEMBLY OF CHANNEL