Method and equipment for heat recovery
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United States of America Patent
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Aug 15, 2017
Issued Date -
N/A
app pub date -
Nov 25, 2013
filing date -
Jul 23, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention relates to a method and equipment for recovering heat from exhaust gas removed from an industrial process, such as an electrolysis process for the production of aluminum. Heat is recovered by means of an extraction/suction system, where the exhaust gas contains dust and/or particles. The heat is recovered as the exhaust gas being brought into contact with heat-recovery elements. Flow conditions and the design of the heat recovery elements are such that the deposits of the dust and/or particles on the surfaces stated are kept at a stable, limited level. In preferred embodiments, the heat-recovery elements have a circular or an extended, elliptical cross-section and may be equipped with fins or ribs.
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International Classification(s)
- F24H:FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING H....
- C25C:PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVER....
- F28D:HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTH....
- F27D:DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, ....
- F28F:DETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATU....
- B01D:SEPARATION
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