Heating inventions 03/08

20080070177 - Method and apparatus for reducing nox emissions in rotary kilns by sncr: A method of operating a mineral processing kiln includes introducing a quantity of a selective non-catalytic reduction (SNCR) reducing agent into the kiln. The SNCR reducing agent may be a solid, liquid, or a gas. A mineral processing kiln modified for the implementation of SNCR is also disclosed.... Agent: Barnes & Thornburg LLP

20080070178 - Rotary tubular kiln useful for the production of activated carbon and having a modified geometry of the rotary tube: The invention has as subject matter a rotary tube, especially for a rotary tube kiln for the production of carbon, with several mixing elements arranged in the inner space of the rotary tube for a thorough mixing of a charged material. The rotary tube comprises a transitional area from a... Agent: Woodard, Emhardt, Moriarty, Mcnett & Henry LLP

20080070180 - Heat exchange furnace and its manufacturing process: A heat exchange furnace includes a combustion furnace module, a passageway module disposed around and connected removably to the combustion furnace module, and a gas-guiding unit including upper and lower guiding modules connected respectively to upper and lower ends of the passageway module. During assembly, the lower guiding module is... Agent: Davidson Berquist Jackson & Gowdey LLP

20080070179 - Heat exchange furnace with serpentine gas flow path disposed within heat exchange space: A heat exchange furnace includes a surrounding wall disposed around a combustion furnace unit so as to define an annular heat exchange space therebetween. Upright buffer plates divide the heat exchange space into a plurality of air chambers communicated with each other. Upper and lower gas-guiding members are connected respectively... Agent: Davidson Berquist Jackson & Gowdey LLP

20080063994 - Earthquake damage spread reducing method and earthquake damage spread reducing system for use in semiconductor manufacturing apparatus: The present invention provides an earthquake damage spread reducing method and an earthquake damage spread reducing system, for use in a semiconductor manufacturing apparatus, which can predict occurrence of an earthquake and prevent fall down of a boat, thus minimizing damage of the earthquake. An earthquake damage spread reducing system... Agent: Smith, Gambrell & Russell