Abstract: A ceramic ferrule assembly is provided, including a head including at least one tab protruding outwardly from an inner peripheral surface thereof, and a stem having an annular flange about an outer peripheral surface thereof and having at least one slot formed therein, the slot being adapted to receive the tab and retain the tab in a stationary position when the stem is rotated relative the head, whereby the at least one tab and the at least one slot mechanically engage one another to secure the ferrule stem and ferrule head to prevent axial disassociation from one another without counter rotation.

Abstract: An array includes a plurality of refractory bricks, each having a substantially tubular body including a first end, an opposed second end, a central bore extending from the first end to the second end along the longitudinal length thereof and defining an inner surface of the refractory brick, and an outer surface extending from the first end to the second end along the longitudinal length thereof. The outer surface of each refractory brick has a shape that transitions axially between a plurality of hexagonal portions and non-hexagonal portions along the longitudinal lengths thereof, and the plurality of refractory bricks are arranged and interlocked with one another in a vertical and horizontal manner via mating members provided on the hexagonal portions of the outer surfaces thereof. A continuous plenum space is defined by the non-hexagonal portions of the refractory bricks arranged in the array.

Abstract: A ceramic ferrule assembly is provided, including a head including at least one tab protruding outwardly from an inner peripheral surface thereof, and a stem having an annular flange about an outer peripheral surface thereof and having at least one slot formed therein, the slot being adapted to receive the tab and retain the tab in a stationary position when the stem is rotated relative the head, whereby the at least one tab and the at least one slot mechanically engage one another to secure the ferrule stem and ferrule head to prevent axial disassociation from one another without counter rotation.

Abstract: An array includes a plurality of refractory bricks, each having a substantially tubular body including a first end, an opposed second end, a central bore extending from the first end to the second end along the longitudinal length thereof and defining an inner surface of the refractory brick, and an outer surface extending from the first end to the second end along the longitudinal length thereof. The outer surface of each refractory brick has a shape that transitions axially between a plurality of hexagonal portions and non-hexagonal portions along the longitudinal lengths thereof, and the plurality of refractory bricks are arranged and interlocked with one another in a vertical and horizontal manner via mating members provided on the hexagonal portions of the outer surfaces thereof. A continuous plenum space is defined by the non-hexagonal portions of the refractory bricks arranged in the array.

Abstract: A cover ferrule is provided, including a hexagonally shaped head portion, a joint shield portion provided at an upper surface of the head portion, and a stein portion extending downwardly from a first end proximate a lower surface of the head portion to an opposed second end thereof. The joint shield portion includes a central opening, coaxially aligned with respect to central openings of the head and stem portions and with a central axis of the cover ferrule, and a plurality of extension members extending radially outwardly with respect to the central axis of the cover ferrule and defining arc portions connecting respectively adjacent extension members of the joint shield portion.

Abstract: A refractory brick assembly unit is provided, including a refractory brick member having an inner passageway extending therethrough from a first opening at an inlet end face to an opposed second opening at an outlet end face thereof. A vector tile is also included, having an annular portion that is coaxially arranged with respect to a longitudinal extension axis of the inner passageway of the refractory brick member positioned in a portion of the inner passageway of the refractory brick member and located proximate the second opening at the outlet end face thereof, and having a domed portion extending from a first surface of the annular portion at a predetermined angle with respect to the longitudinal extension axis of the inner passageway of the refractory brick member so as to occlude at least a portion of the second opening of the refractory brick member at the outlet end face thereof.

Abstract: A cover ferrule is provided, including a hexagonally shaped head portion, a joint shield portion provided at an upper surface of the head portion, and a stein portion extending downwardly from a first end proximate a lower surface of the head portion to an opposed second end thereof. The joint shield portion includes a central opening, coaxially aligned with respect to central openings of the head and stem portions and with a central axis of the cover ferrule, and a plurality of extension members extending radially outwardly with respect to the central axis of the cover ferrule and defining arc portions connecting respectively adjacent extension members of the joint shield portion.

Abstract: Apparatus for separating solids from flue gas in a circulating fluidized bed (CFB) boiler comprises plural vertical, impact type particle separators made of a plurality of hung elements which are supported from at least one cooled support tube. The plurality of hung elements cooperate with one another at adjacent ends thereof to form a collecting channel which opens toward a flow of flue gas along the length of the support tube. Each hung element includes two mutually inverted U-shaped parts; the first U-shaped part opens towards the oncoming flow of flue gas, the second U-shaped part embraces the support tube, and the first U-shaped part is shifted relative to the second U-shaped part by some fraction of a height of the hung element. The hung elements may be made of metal or ceramic.

Abstract: A bubble cap assembly for use in fluidized bed boilers, furnaces, or reactors, has a bubble cap, a stem, and at least one pin. One end of the stem is inserted into the bubble cap. The bubble cap has outlet holes for delivering a fluidizing medium, typically into a bed of granulated material, but which prevent backsifting of the granulated material into the bubble cap. The bubble cap also has at least one insertion hole, through which a pin may be inserted. When the pin is inserted through the bubble cap insertion hole, it also occupies a groove or indentation on the stem thereby preventing separation or disassembly of the bubble cap and stem combination. An elastic gasket may be provided between the bubble cap and stem to form a fluid tight connection.

Abstract: Ceramic filter of various configuration have been used to filter particulates from hot gases exhausted from coal-fired systems. Prior ceramic cross-flow filters have been favored over other types, but those previously horn have been assemblies of parts somehow fastened together and consequently subject often to distortion or delamination on exposure hot gas in normal use. The present new monolithic, seamless, cross-flow ceramic filters, being of one-piece construction, are not prone to such failure. Further, these new products are made by novel casting process which involves the key steps of demolding the ceramic filter green body so that none of the fragile inner walls of the filter is cracked or broken.