F - Mech Eng,Light,Heat,Weapons – 25 – J
Patent
F - Mech Eng,Light,Heat,Weapons
25
J
162/138
F25J 3/00 (2006.01) B01D 53/14 (2006.01) B01D 53/50 (2006.01) C01B 17/60 (2006.01) C01B 17/90 (2006.01)
Patent
CA 1124639
ABSTRACT OF THE DISCLOSURE For removing undesired gaseous components, e.g., SO2, from hot combustion gases (from carbonaceous fuels) by scrubbing with a regenerable absorbent, the scrubbing is conducted with a liquid physical absorbent, e.g., dimethylformamide, at a temperature less than 0°C. The cooling requirements of the scrubbing process are supplied by an absorption-type refrigeration unit. The hot combustion gases, prior to scrubbing, are cooled in indirect heat exchange, first with air in an upper temperature range cooling zone, and then with cold combustion gas purified by the scrubbing in a lower temperature range cooling zone. The heat from the resultant heated air may be used as (a) preheated air for combustion or may be used as (b) an energy source for the operation of the absorption- type refrigeration unit or may be used as both (a) and (b). A heat pump may be used to supplement the absorption-type refrigeration unit. Other aspects include, for example, special regenerator design and absorbent regeneration steps.
339589
Haeussinger Peter
Linde Gerhard
Schliebener Claus
Linde Aktiengesellschaft
Marcus & Associates
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