In collaboration with KAPP, Carbone Lorraine has developed a fully welded gasket-free heat exchanger manufactured of tantalum CL-Clad. Tantalum complies with hot and corrosive fluids, and is a refractory and corrosion resistant metal to most acids. It is easily formed into common shapes and has a high thermal conductivity. CL Clad consists in brazing steel onto reactive metal sheets, such as tantalum, titanium or zirconium. The Heatex overhead condenser is robust and easy to clean. An optional sight glass allows easy control of the condensation or plates fouling. One aspect of the Heatex design is the „U“ plate design of welded plates. With the plates only welded to one tube-sheet, this allows for free thermal expansion of the plates, without stressing of the welds. Another major advantage is that it can be designed to dimensionally match (including nozzle positions and supports) existing graphite cubic block heat exchangers, without the need for support or pipework changes.
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