Energy conserving process furnace system and components thereof

摘要: Abstract of the Disclosure An energy conserving process furnace has a recuperator to utilize heat derived from exhaust gases in order reduce fossil fuel consumption furnace. Elongated, enhanced surface ceramic exchanger tubas are used recover gas. A preferred sealing arrangement is between metal and tubes con-tain combustion air. Heat added by air fluid burner. The provided with vibration protective mechanisms prolong use-ful life under severe mechanical encountered some applications. In method operating slot gas exhausted side through or passageway having an elongated horizontal cross section. second passage curtain positioned adjacent first permit proper flow recuperator. designed recoup passage-way provide such as by-passes avoid passing colder room protect operator high temperature exchange operate at temperatures 1300°F above without damage good properties elements. system preferably includes recirculating burner means which acts requirements zone low oxygen so prevent scale formation oxidation metals being treated area. flame front outside chamber.