Patent ID: 7490601
Filing Date: 2009-02-17
Classification: F23B,F23C,F23G,F24B

Abstract:
1. A method for reducing products of incomplete combustion in a fireplace emissions stream, comprising receiving said fireplace emissions stream into a shell, wherein said shell includes a heating element in fluid communication with said emissions stream, a catalyst substrate downstream of said heating element in fluid communication with said emissions stream, a bypass flue within said shell having an inlet end upstream of said heating element and an outlet end downstream of said heating element, and a controllable damper connected to said bypass flue inlet end; oxidizing wood-burning pyrolysis products in said fireplace emissions stream by selectively directing portion of said emissions stream to flow in proximity to said heating element by adjusting the position of said controllable damper, thereby heating said portion of said emissions stream to at least 1501° F (816° C.) and allowing an unprocessed portion of said emissions stream to bypass said heating element and said catalyst bed; reacting said portion of said fireplace emissions with said catalyst substrate; and recombining said unprocessed portion of said emissions stream with said processed portion of said emissions stream; releasing the products of said reaction from said shell.