Abstract: An emission control apparatus which can be used on an outdoor wood-fired boiler. Ambient air, which has a much higher concentration of available oxygen in relation to exhaust gases, is caused to be heated before being passed through catalyst-coated media along with exhaust gases, thereby improving the performance of the catalytic reaction.

Abstract: Methods and systems for reducing combustion emissions generated in, or released from, a combustion chamber are provided. Systems and methods provided herein may be used to modify, for example, an existing fireplace such that combustion emissions resulting from burning a fuel combustion source are reduced. The method involves providing an emission reduction system which includes a casing assembly with at least one panel of a catalyst-coated media and a support structure supporting the casing assembly. The casing assembly is positioned between a fuel combustion source and a flue by associating the support structure with an interior surface of the firebox. The fuel combustion source is burned to create a fire, such that the catalyst-coated media reduces emissions associated with fuel combustion when contacted with combustion exhaust.

Abstract: An emission control apparatus which can be used on an outdoor wood-fired boiler. Ambient air, which has a much higher concentration of available oxygen in relation to exhaust gases, is caused to be heated before being passed through catalyst-coated media along with exhaust gases, thereby improving the performance of the catalytic reaction.

Abstract: Pollutants in air or other fluids are converted to harmless compounds by positioning a catalyst coated reticulated foam in the path of the fluid flow. The reticulated foam is a three dimensional latticework of interconnected ligaments forming a porous, open-celled structure with a large internal surface area. Internal surfaces of the reticulated foam are coated with the catalyst. Catalytic conversion efficiency is maintained by fluid heat, an internal heating source, or external sources, such as combustion processes and radiation illumination.

Abstract: Pollutants in the exhaust from wood burning in a fireplace are removed by positioning reticulated foam between the smoke chamber and the flue. The reticulated foam is a three dimensional latticework of interconnected ligaments forming a porous, open-celled structure with a large internal surface area. The internal surfaces are coated with a catalytic material which converts pollutants in the exhaust to harmless compounds. Heat from the exhaust, when the fire is burning, maintains the catalyst at a temperature for efficient conversion operation. Thermostatically controlled heaters are embedded in the foam, or thermostatically controlled electrical current is applied directly to the catalyst, to raise the catalyst temperature when the fire is growing or smoldering, periods during which the exhaust temperature is insufficient for good conversion operation.