F - Mech Eng,Light,Heat,Weapons – 28 – D
Patent
F - Mech Eng,Light,Heat,Weapons
28
D
F28D 7/00 (2006.01) B01J 19/02 (2006.01) C22C 38/40 (2006.01) F28D 7/06 (2006.01) F28F 9/22 (2006.01)
Patent
CA 2510916
Heat exchange process comprising sequential cooling a first fluid by indirect heat exchange with a second fluid and comprising the following steps: - introducing the first fluid sequentially into at least two concentric U-tube bundles defining at least a first heating zone and a second heating zone respectively, - introducing a second fluid onto the shell side of the U- tube bundles, each heating zone partially separated from the other by a wall, the first heating zone being a colder zone and the second heating zone being a hotter zone, the tube bundle of the first colder heating zone being made of a low alloy steel and the tube bundle of the second hotter heating zone being made of a temperature and corrosion re- sistant alloy, - withdrawing the cooled second fluid and the heated first fluid. The invention also concerns a heat exchanger for use in the above process.
Borden Ladner Gervais Llp
Haldor Topsoe A/s
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