Abstract: An SNCR distribution grid for introducing a NOx reducing reactant into a flue gas flow. The grid is made of one or more elements which are formed by fluid-cooled tubes to which membrane pieces are attached, preferably by welding, to form conduits in between the tubes. The fluid-cooled tubes may be cooled by water and/or steam and the distribution grid is disposed in the flue gas flow. To admit the reactant into the flue gas, nozzles are provided in the membrane and the reactant is conveyed from a location external of the furnace or combustor enclosure, into the conduits so formed, and thence out into the Flue gas flow via the nozzles.

Abstract: A user-customizable case is provided for at least partially covering a portable electronic device. The case may include first and second panels and a retainer for holding an insert bearing an indicia. The panels may be elastically connected to facilitate receiving many different sizes and shapes of portable electronic devices. The retainer may removably attach to the case to facilitate exchanging the inserts for customizing the device, insignia, or the like. The case may be included in a kit, along with at least one insert and a retainer. Related methods are also disclosed.

Abstract: A demountable panel system has panel members formed with peripheral edge surround sections of extruded rigid material. The surround sections included channels to receive panel material and leg portions with opposed grooves to releasably engage with a clip rail section. The clip rail section enables various panel structures, such as corner posts, to be interconnected with the panel members. The clip rail section has a tongue extending generally in the direction perpendicular to the panel member and so shaped as to be resiliently engageable with a tongue of an adjacent clip rail section whereby panel members or other panel structures can be clipped together along their length by relative transverse movement. The clip rail section includes opposed, outwardly extending flanges and perpendicular leg parts which cooperate with the channels of the surround section to form a recess having a narrow mouth.