System for treating and recovering energy from exhaust gases

Details System for treating and recovering energy from exhaust gases System for treating and recovering energy from exhaust gases

1983-09-09

1985-04-30

Ostrager, Allen M.

Power plants

Motive fluid energized by externally applied heat

Process of power production or system operation

F01K 2100, F01K 300

Patent

active

045135738

ABSTRACT:
A method and apparatus for treating hot exhaust gas to purify the gas and/or to recover the heat values therein includes removing particulate matter from the gas, cooling the gas by transferring its heat to regenerators and purifying the cooled gas by subliming or "freezing out" harmful, less volatile components. The heat energy of the exhaust gas may be recovered by passing a heat exchange medium, such as compressed air and/or purified cooled gas, through the heated regenerators. A major advantage of this method and apparatus is that exhaust gases at 300.degree.-350.degree. C. may be purified and the heat energy recovered using thermodynamically efficient regenerators. As a result the air preheater stage of conventional boilers or combustion units, which comprise 60% to 70% of the heat exchange surface area, may be eliminated.

REFERENCES:
patent: 4411136 (1983-10-01), Funk

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