Abstract: An improved metal catalytic tube includes an elongated metal member formed at least partially of metal particles and including a catalytic enhancement incorporated into the metal member. The metal member is formed with a cavity and includes an inner surface defined by the cavity and an outer surface opposite the inner surface. The metal member has a porosity at the outer surface that is greater than the porosity at the inner surface. The porosity at the inner surface is sufficiently low that the metal member can carry a quantity of gas through the cavity without the gas leaking through the inner surface of the metal member. The abstract shall not be used for interpreting the scope of the claims.

Abstract: A filter element having a plurality of membrane layers. The filter element has a filter member having a porous sidewall. The sidewall has an outer surface and an inner surface which allow a gas to flow through. A first membrane is in communication with the outer surface for preventing particulate matter from penetrating the outer surface. A second membrane is in communication with the inner surface for preventing particulate matter from penetrating the inner surface.

Abstract: A filter assembly for holding a candle filter element within a hot gas cleanup system pressure vessel is disclosed. The filter assembly includes at least one bottom ring gasket positioned in an annular groove formed in a portion of a metal bottom clamp for the assembly. The annular groove is located at a junction between an extended bottom portion of the filter holder and the metal bottom clamp. In another aspect of the filter assembly, an inner surface of the filter holder designed to receive a fail-safe regenerator having at least one locking groove formed thereon is disclosed. The locking groove has at least two portions formed in communication with the interior of the filter holder. The locking groove can include a first axial groove portion and a second circumferential groove portion in communication with each other. Each portion of the locking groove is structured to receive therein a tooth formed integrally with or connected to a fail-safe regenerator device.

Abstract: An axially elongated candle filter element (28′) is made having an open end, a closed end and porous walls (86) around an axially elongated passageway volume (88) where the walls are of an open metal structure (86), preferably a honeycomb structure, placed at a 90 degree angle to and surrounding the axis (90—90) of the inner volume, where the structure (86) is filled with porous ceramic material (84) through which hot gases can pass to reach the passageway (88).

Abstract: A filter assembly (60) for holding a filter element (28) within a hot gas cleanup system pressure vessel is provided, containing: a filter housing (62), said filter housing inner walls defining a joint (98), said walls defining an interior volume (67); a one piece, fail-safe/regenerator device (68) within the interior chamber (67) of the filter housing (62) having outer walls defining a joint (98′) which mates with the filter assembly joint (98), containing outward-extending radial flanges (99 and 99′) with mating holes (100 and 100′) through both the housing (62) and fail-safe/regenerator device (68) for seating an essential sealing means (70) between the joints (98 and 98′).

Abstract: A fail-safe/regenerator device (68), for use within a filter assembly (60) also containing a main filter element (28), contains a top main support (90), and a bottom main support (82), where a rigid, static bed of needles, fibers or wires (92), having an aspect ratio of 30 to 2000 and having crossover points (94), are effective to trap contacting contaminating particulates permanently, and may have an associated safety filter 99.

Abstract: A filter assembly is made for filtering hot gas within a cleanup system pressure vessel (22), where the filter assembly (60) contains a filter housing (62) having an interior chamber (66), and a filter element (28) attached to the bottom of a fail-safe/regenerator filter device (129) which contains a plurality of elongated passageway members either of a porous metal media tube type (120) or of a porous metal media honeycomb cartridge member type (130), where the passageway members are effective to facilitate enhanced capture of particulates in the event of filter element (28) failure.

Abstract: A filter assembly (60) for holding a filter element (28) within a hot gas cleanup system pressure vessel is provided, containing: a filter housing (62), said filter housing having a certain axial length and having a peripheral sidewall, said sidewall defining an interior chamber (66); a one piece, all metal, fail-safe/regenerator device (68) within the interior chamber (66) of the filter housing (62) and/or extending beyond the axial length of the filter housing, said device containing an outward extending radial flange (71) within the filter housing for seating an essential seal (70), the device also having heat transfer media (72) disposed inside and screens (80) for particulate removal; one compliant gasket (70) positioned next to and above the outward extending radial flange of the fail-safe/regenerator device; and a porous metallic corrosion resistant superalloy type filter element body welded at the bottom of the metal fail-safe/regenerator device.

Abstract: A filter element for separating fine dirty particles from a hot gas. The filter element comprises a first porous wall and a second porous wall. Each porous wall has an outer surface and an inner surface. The first and second porous walls being coupled together thereby forming a substantially closed figure and open at one end. The open end is formed to be coupled to a hot gas clean up system support structure. The first and second porous walls define a channel beginning at the open end and terminate at the closed end through which a filtered clean gas can flow through and out into the clean gas side of a hot gas clean up system.

Abstract: A filter holder and gasket assembly for holding a candle filter element within a hot gas cleanup system pressure vessel. The filter holder and gasket assembly includes a filter housing, an annular spacer ring securely attached within the filter housing, a gasket sock, a top gasket, a middle gasket and a cast nut.