F - Mech Eng,Light,Heat,Weapons – 28 – D
Patent
F - Mech Eng,Light,Heat,Weapons
28
D
257/1, 257/29, 2
F28D 19/00 (2006.01) F23J 11/00 (2006.01)
Patent
CA 1240666
METHOD AND APPARATUS FOR IMPROVING THE OPERATION OF A HEAT GENERATOR Abstract of the Invention A method and apparatus for improving the efficiency of a heat generator in which combustible fuels such as fossil fuels, refuse, or other materials are burned is described. Flue gas generated in the heat generator and combustion air are passed in heat exchange relationship in a heat exchanger. The heat exchanger is selected so that it removes a substantial amount of heat from the flue gas, whose temperature is consequently lowered to a level where a corrosive pollutant such as SO3 in the form of H2SO4 is likely to condense out. A pollutant removing liquid is selectively applied onto the portion of the heat exchanger where the flue gas passes through, both to scrub the flue gas and protect that portion of the heat exchanger from cor- rosive effects from condensed pollutants. Particulates and gaseous pollutants are removed from the flue gas and the heat exchanger by the liquid, which may be a neutralizing liquid such as an alkaline solution to provide a protective sheath for the heat exchanger against the effects of corrosive pollutants. In the described illustrative em- bodiment, the invention is shown in use with a thermal section for a large scale power plant.
452528
Bereskin & Parr
Monro Richard J.
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