Graphite Block Heat Exchangers

Mersen has designed and manufactured block heat exchangers for over 50 years, with more than 10,000 units in service around the world. Mersen offers heat exchangers in both cylindrical and cubic designs, and feature Graphilor® 3, our exclusive trademark graphite which is produced in-house.

Graphilor®3 is highly resistant to corrosion and provides a maximum temperature resistance of 400°C. It is the only impregnated graphite resulting from the combination between isostatic graphite and a specific resin and offers excellent refractory qualities and mechanical properties. Additionally, our PTFE (XTH) impregnation provides additional resistance to corrosion. Flexible designs are available to meet the needs of multiple applications.

Benefits of Mersen graphite block heat exchangers:

High corrosion resistance of Graphilor® 3
Compactness
Robustness
Modular design
Easy maintenance
Long lifetime
Service and maintenance in the US with two strategically located facilities
Manufacturing plant in the US

POLYBLOC®, MERSEN’S CYLINDRICAL HEAT EXCHANGERS KEY FEATURES:

LARGE HEAT TRANSFER AREAS WITH MODULAR DESIGN

Large exchange surface areas (up to 300 m2) with high heat transfer
Headers available in Graphilor®, stainless steel, reactive metals, PTFE or rubber lined steel
Large range of block sizes from 140 to 1,500 mm diameter
Design for high pressure up to 16 barG (service) and 12 barG (process)
PTFE Bellows – fitted to graphite nozzles
Drilling adapted to process constraints with large diameter holes for fouling process
Multi-pass arrangements possible for both process and service sides
Rigilor® treatment to protect the surface of the blocs against erosion in some abrasive processes

EASY MAINTENANCE DUE TO EASY DISMANTLING OF SYSTEM FOR OVERHAUL, CLEANING AND VALIDATION

MERSEN'S CUBIC HEAT EXCHANGERS KEY FEATURES:

COMPACT DESIGN WITH SLOTS OR DOUBLE DRILLING ON PROCESS SIDE

Effectively doubles the process side surface area making units ideal for condensing
Drilling adapted to process requirements (6.5, 10 and 16mm holes in single or double drilling patterns)

SPECIAL GMP DESIGN FEATURES

Fully draining with no process to service gaskets

FLEXIBLE AND EFFICIENT DESIGN

Headers available in Graphilor®, carbon and stainless steel, PFA, PTFE or rubber lined steel
No hidden gaskets, single piece core blocks (250, 400, 500 & 600mm square and up to 1800mm long)
Heat exchange areas from 1m2 to 100m2
Design pressure of up to 10 barG on process and service side
PTFE Bellows are fitted to graphite nozzles to remove pipework stresses
Interchanger provides the most optimum solution for corrosive fluids on both process and service side
Multi pass arrangement provides the most efficient thermal design using true counter-current flow, on both process and service side