Exhaust gas purification and heat value recovery

Details Exhaust gas purification and heat value recovery Exhaust gas purification and heat value recovery

B - Operations, Transporting

01

D

165/1, 23/341, 4

B01D 8/00 (2006.01) F04B 37/08 (2006.01)

Patent

CA 1122382

ABSTRACT OF THE DISCLOSURE A method and apparatus for treating hot ex- haust gas to purify the gas and to recover the heat values therein includes removing particulate matter from the gas, purifying the gas by subliming or "freez- ing out" harmful, less volatile components and discharg- ing the more volatile components as purified gas. The sublimed or "frozen out" components are collected and neutralized or utilized. The heat values may be re- covered prior or subsequent to purifying, such as by spraying a power fluid into the gas to cool and in- crease the volume of the gas and then expanding the gas in an expansion turbine to further cool the gas and to produce shaft work. Alternatively, the heat values may be recovered from purified, hot gas by transferring the heat energy of the gas to a power fluid which operates in a Rankine cycle external com- bustion engine to do shaft work.

316491

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