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Heat Transfer

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Screw Heat Exchangers can do the Job

| By Chemical Engineering

This firm recently delivered a screw heat exchanger to a client in Belgium that cools down more than 2,000 kg/h of rhenium, which is coming out of an incinerator at 850°C, to 150°C. The cooling is required because the hot rhenium cannot be handled at the high temperature. The screw heat exchanger consists of a large double-axis screw conveyor with hollow blades, whereby each screw has a diameter of more than 800 mm. The length of each screw is more than 8 m, and both the blades, the screw axis and body are cooled by water at a temperature above 20°C. — Hall 9, Booth 534 — Celsius B.V., Drunen, Netherlands

www.celsius.nl