Abstract: An intumescent catalyst mounting mat is provided by cutting a single piece of mat into a desired profile and cutting a slit about 1/2 way through the thickness of the mat at a selected fold line. The mat is then easily folded upon itself to create a double thickness mat that is already secured to the next layer and may have any desired profile.

Abstract: For the production of a catalyst body for the catalytic treatment of gas, in particular for the purification of exhaust gas, flat and corrugated sheet metal members having a metallic core and coatings are formed, which coatings comprise a nonmetallic wash coat and at least one catalytically active noble metal. A packet comprising sheet metal members having coatings is then arranged between two walls of a sleeve. Thereafter, each edge of each sheet metal member, which edge faces one of the two walls, is welded to the relevant wall in at least one edge segment. The sheet metal members adjacent to one another then together bound passages for the exhaust gas. This production process makes it possible, even in the case of small cross-sectional dimensions of the passages, to apply uniform coatings to the entire surfaces of the sheet metal members, said surfaces bounding the passages.

Abstract: A process and arrangement for contacting a moving bed of compact particulate material, usually catalyst, with a radial flow of fluid maintains an unconfined surface of catalyst particles in place by passing fluid axially into the upper surface of the bed and maintaining radial gas flow across an inlet screen at an elevation that is above the upper most elevation of perforations for withdrawing gas flow from the particulate bed. Two vertical screens confine the bed of catalyst. Perforations cover substantially the entire length of the inlet screen. The outlet portion of the screen has perforations that end below the top of the free surface of the catalyst bed and define an upper bed portion therebetween. The inlet screen directs gas flow radially across the inlet screen into an upper portion of the bed and cause at least partial axial flow of gas through the upper portion of the particle bed.

Abstract: A catalyst unit for use in an exothermic reaction, such as ammonia oxidation, comprises a material effective as a catalyst for said reaction having a shape conforming to a disc or cone having a plurality of radially extending corrugations. The catalyst unit may be disposed across a reactor with a start-up burner disposed above the catalyst unit and mounted for rotation about the axis of the reactor. The burner tube is pivoted and provided with means, for example a follower engaging with the upper surface of the catalyst unit, so that as the burner is rotated about the axis the burner tube pivots to maintain the burner tube a constant distance above the upper surface of the catalyst unit.

Abstract: A catalytic converter for an internal combustion engine having a housing provided with an exhaust gas by-pass tube and a valve arrangement that causes the exhaust gas to selectively flow through a catalyst coated substrate to be treated thereby or through the tube so as to exist the converter in an untreated state and in which an actuator is in a sealed relationship with the housing so as to prevent exhaust gas leakage while providing for movement of the valve.

Abstract: The invention relates to a cleaning device wherein polluted effluents are passed into a cage (2) where a partitioned ring (1) of vertical axis, containing a charge (M) of a solid material exhibiting a large heat exchange surface and, against the inner wall thereof, a catalyst bed (9), rotates. An autothermal working point is reached by including in the catalyst bed heating means (resistors for example) that are temporarily connected to the power supply system, after which the cleaning operations with rotation of the ring and effluent circulation are launched. Heat control is thereafter provided by controlled injection into the effluents of either a fuel or sprayed water for example by means of injectors (15, 16). The device can be applied in the field of incineration of VOC for example in industrial effluents.

Abstract: A particulate trap for use with a diesel engine is high in particulate trapping capacity and regenerating capacity and low in pressure drop, and yet is compact and inexpensive. This trap has a filter element made up of a plurality of tapered filter members formed from a fabric of heat-resistant metal fibers. The filter members have different diameters from each other and are nested concentrically one inside the other so that the adjacent filter members are positioned inversely. Each filter member is connected at its large-diameter end to the small-diameter end of the immediately outer filter member to alternately close the exhaust inlet and outlet ends of the gaps between the adjacent filter members. The filter element thus formed is mounted in a metal case provided in an exhaust line and used as a particulate trap. With this arrangement, it is possible to increase the particulate trapping area of the filter and the exhaust inlet openings without increasing the size of the entire trap.

Abstract: A spiral fixed-bed module used to provide contact and interaction between a fluid stream and solid particles, comprises a fluid distribution element formed by a pair of laterally coextensive envelope-like fluid communication channels being spirally wound into a cylindrical structure with adjacent layers spaced apart forming spiral loops of spaces of uniform width. The element is then disposed in a cylindrical casing, and immobilized therein by packing solid particles into the spaces between the layers of the spiral channels, and the spaces between external surfaces of the element and inner surfaces of the casing. A fluid stream introduced into a first of the channels will be directed to flow through the solid particle layers via the porous side walls of the distribution channels, and exit from the second channel. The module packed with adsorbent particles provides a thin-bed adsorber, and can use very small adsorbent particles for efficient adsorption without giving rise to high pressure drop.

Abstract: A honeycomb body, in particular a catalyst carrier body, for catalytic conversion of exhaust gases in an exhaust gas system, especially an exhaust gas system of an internal combustion engine, preferably an Otto engine, includes a central channel and adjacent discs defining a multiplicity of curved outer channels bounded by the discs. The outer channels extend outwards from the central channel and have one end opening into the central channel. At least some of the disks have a macrostructure forming a lateral boundary of the outer channels. An apparatus for catalytic conversion of exhaust gases includes a housing having an exhaust inlet opening and an exhaust outlet opening, and the honeycomb body disposed in the housing. An additional microstructure in some or all of the disks can increase the effectiveness of the catalytic conversion.

Abstract: The described exhaust gas purifier arrangement for an internal combustion engine provides gas purification efficiency while maintaining high output levels by providing an annular thin-walled catalyst element surrounding gas discharge openings in an expansion pipe having a closed downstream end whereby gas flowing in the expansion pipe is caused to flow radially through the thin-walled catalyst element into a chamber from whence it is conducted to a silencer element for further processing prior to discharge from a tail pipe.

Abstract: A system for the abatement of industrial process emissions comprises a horizontal regenerative catalytic oxidizer (RCO). The system utilizes at least two regenerative chambers and at least two catalytic chambers in a controlled abatement process. Pollutants injected into the RCO from the process emissions are catalytically oxidized. The horizontal configuration of the RCO reduces the size of the RCO per cubic foot of emissions treated, and also simplifies maintenance requirements in removing and replacing, or regenerating, the catalyst. Chutes and valves situated above and below the catalyst provide maintenance means without the associated contamination concerns typically caused by catalytic migration throughout vertically configured RCOs.

Abstract: An apparatus and process is provided for the removal of hydrogen sulfide from gases and for restoration of hydrogen sulfide removal capacity in nitrogen-treated carbonaceous chars which have become exhausted for hydrogen sulfide capacity when used for the removal of hydrogen sulfide from gas streams. The apparatus has a matrix of removable canisters which contain the nitrogen-treated carbonaceous chars. This process entails directing the gas containing hydrogen sulfide through the canister, washing the spent carbonaceous char with water by flushing/dynamic washing through the canister to remove the majority of the hydrogen sulfide reaction products. By the use of this process a significant proportion of the original hydrogen sulfide capacity of the nitrogen-treated carbonaceous char is recovered and the canisters can be recycled a large number of times.

Abstract: A reactor, for example, for adsorption processes, is described which is designed essentially cylindrically and is symmetrical with respect to an essentially vertical axis. The reactor is bounded by a shell. A circular bed filled with free-flowing material (e.g., an adsorbent or catalyst) is positioned inside the shell. The free-flowing material is contained within an inner basket and an outer basket and supported by a bottom support member from below. Both baskets are rigidly connected in the radial direction and rigidly connected at their lower end to the shell. At least one of the two baskets is both expandable in the axial direction and rigidly connected at its upper end to the shell.

Abstract: A process of cleaning a gas and a rotating catalytic gas cleaning device including a crown of vertical axis driven into rotation in a cage. The crown has an annular catalyst bed covering its inner wall and an annular thermal load, outside the catalytic bed, made of a material exhibiting a large heat exchange surface. A polluted gas is radially passed from a peripheral inlet to a central zone of the crown with crossing of an annular thermal load and a catalytic layer. The gas is radially passed gas from the central zone to a peripheral outlet, while again crossing the catalytic bed and thermal load with thermal exchange.

Abstract: Disclosed herein is an outboard motor including a propulsion unit including an internal combustion engine having an exhaust port and an exhaust gas discharge system including a catalytic converter comprising a housing having an outer wall defining an axis, an inlet end with an inlet, and an outlet end with an outlet, a catalytic element located in the housing concentrically with the axis and having an outer surface defining, with the housing outer wall, an outlet volume which increases in size in the direction toward the housing outlet end, an inner surface spaced from the outer surface, defining therein an inlet volume, and defining, adjacent the housing outlet end, a by-pass opening communicating between the inlet volume and the housing outlet, and flow passages extending radially outwardly from the inner surface to the outer surface, communicating, at the inner surface, with the inlet volume, and communicating, at the outer surface, with the outlet volume, and a deflector moveable between a blocking positi

Abstract: A device for feeding a gaseous fluid radially from a center of a vessel outwards, including a central vertical gas feed tube having at least one vertical row of discharge openings, a catalyst bed of bulk material accommodated in a perforated basket, which includes a perforated cylindrical surface surrounding the central vertical gas feed tube in a spaced relationship thereto and defines with the guide feed tube a hollow cylindrical space, the perforated cylindrical surface defining an impingement surface of the catalyst bed, and deflector elements provided at the at least one row of the discharge openings to insure a substantially tangential flow of gas into the hollow cylindrical space.

Abstract: The present invention provides a biological deodorizing apparatus of large treating capacity and capable instantly of bringing into operation. The apparatus comprises a casing (1), a rotary shaft (2) and a carriers cartridge (3).

Abstract: An apparatus is disclosed for purifying the exhaust gas of a diesel engine by reducing the contents of soluble organic fractions which are particulates. The apparatus comprises a catalyzer provided on an exhaust pipe, a cooler provided around either a portion of the pipe between the catalyzer and the engine or the catalyzer in itself for cooling the gas flowing through the pipe, a temperature sensor for detecting the temperature of the gas flowing through the pipe, a tachometer for detecting the rotating speed of the engine, a load sensor for detecting the load on the engine, a controller for controlling the cooler on the basis of the respective detection outputs from the sensors.

Abstract: The invention is directed at an engine exhaust system comprising: (1) a honeycomb structure having an inlet and outlet end disposed in a housing located in an exhaust gas stream downstream from an engine, and having a first substantially unobstructed flow region, and a second more obstructed flow region adjacent the first region, both providing a flow path for the exhaust gases in the exhaust gas stream; and, (2) a fluidics apparatus disposed in the exhaust stream comprising a bi-convex diverter body with the respective surfaces located upstream and downstream of each other, located upstream and proximate to the first region, a diversion fluid source and a conduit possessing a rounded outlet for directing the diversion fluid toward the diverter body.

Abstract: The disclosure relates to a catalytic converter for cleaning exhaust gas generated from automobiles or the like and more particularly to a structure for securing a catalyst carrier to a casing.In the converter, a casing for embracing, supporting and securing the catalyst carrier is provided with at least one end cover at the one end of the casing in the longitudinal direction thereof, the catalyst carrier is secured to the one end cover, but not secured to the remainder of the casing. The catalyst carrier may be secured to the end cover by sandwiching the flange portion of the catalyst carrier between the vertical step portion of the end cover and a pushing ring via buffering members. Alternatively, the catalyst carrier may be secured to the end cover by pushing a taper bushing having a wedge-shaped cross section into the space between the concave recessed portion provided on the surface of the catalyst carrier and the short pipe portion of the end cover.

Abstract: A high strength, uncoated, uncalendered airbag fabric that is lighter in weight than heretofore and exhibits an air permeability of less than 4 cfm per square foot of area at air pressures of one-half inch of water. The fabric is woven on a fluid jet loom from synthetic, continuous, multi-filament yarns having a denier in the range of 200 to 900.

Abstract: The catalytic converter for the catalytic treatment of exhaust gas has a housing, an inlet and an outlet. The housing contains catalyst means having at least two packets of sheet metal members. The inlet leads into an inner cavity located between the packets and has, at its orifice, the same cross-sectional shape and the same cross-sectional dimensions as the inner cavity. The latter has at least one free region whose cross-sectional area decreases in a direction away from the inlet. The outlet is connected to an outer cavity located between inner surface sections of the housing and the catalyst means. Each packet of sheet metal members bounds passages which in cross-section run from the inner cavity to the outer cavity on different sides. This makes it possible to adapt the shape of the housing well to the available space. In addition, the catalytic converter has advantageous flow and cold-start characteristics and can be economically produced.

Abstract: A catalytic converter selectively controllable between a radial flow mode, wherein exhaust gas is caused to radially flow across the catalyst thereof, and a by-pass mode, wherein exhaust gas passes axially therethrough. The catalytic converter includes a selectively perforated tube, a catalytic monolith composed of a series of alternating herringbone corrugation patterned foil sheets having a noble (precious) metal catalytic material applied to the surface thereof wherein each of the foil sheets has a central hole whereat is situated the tube, a valve for selectively occluding the tube, and a clam-shell enclosure. The herringbone corrugation pattern provides a plurality of radial passageways. When the valve is in its closed position the tube is in a closed state, wherein the exhaust gas entering the tube upstream of the catalytic monolith is caused to pass through the passageways until emerging at the outer periphery of the catalytic monolith.

Abstract: A device for the purification of an exhaust gas containing at least one contaminant removable through heterogeneous catalysis and flowing through a chamber having an inlet and an outlet, comprises at least one disk structure positionable within the chamber and defining a central cavity alignable with the inlet of the chamber. The disk structure includes a non-metallic, gas-permeable and flexible carrier element comprising a band woven of glass fiber yarn. The yarn is formed of individual fibers coated with a layer of pulverized zeolitic material defining a molecular sieve and having a catalytic material, selected to act adsorptively upon the at least one contaminant, dispersed therein.

Abstract: An apparatus for removing fumigation gasses from fumigated structures is provided. Air is directed from a structure through an adsorption unit and then recirculated back into the structure. A fan directs air through the adsorption unit. The adsorption unit contains an annularly shaped adsorption bed and an inner passage way and outer passage way through which fumigation gasses are directed. A lower adsorption efficiency per pass through the adsorption bed is used in conjunction with multiple passes with the method of the present invention.

Abstract: A catalytic converter exhaust section comprises a first mounting plate, a second mounting plate, a hollow cylindrically shaped metallic tube and a plurality of substantially identical metallic catalytic converter substrates arranged in a honeycomb pattern. Each of the catalytic converter substrates has a regular hexagonal cross section and an inlet end separated from an outlet end by six planer walls. The metallic substrates are attached in parallel to form a compound honeycomb cross section with an inlet side, an outlet side, and an outer border defined by a portion of the planer walls. The compound honeycomb cross section is affixed within the tube between the first mounting plate and the second mounting plate. The individual substrates are coated with an appropriate catalyst for treatment of a particular exhaust component.

Abstract: The catalytic converter has an axis and a housing having an inlet and an outlet. The housing contains hollow cylindrical catalyst means having an inner surface, an outer surface and passages for the exhaust gas which run from the inner surface to the outer surface. In a cross-section at right angles to the axis, the catalyst means surround an inner space of the catalyst means, with which space the inlet communicates and which space contains a limiting and/or guide member. This has a limiting and/or guide surface which approaches the inner surface of the catalyst means in a direction away from the inlet and distributes the exhaust gas, flowing into the inner space of the catalyst means during operation, uniformly over the passages of the catalyst means.

Abstract: A honeycomb structure having a periphery and two ends, including a plurality of passages which are defined by partition walls and extend in an axial direction between the ends, wherein the partition walls are formed of a plurality of through holes for forming turbulent flow so that the fluid pass through the through holes from one of the passages to the adjacent passage, each of the through holes having an open area of at least 0.25 mm.sup.2, thereby a stream of the fluid passing through the honeycomb structure is efficiently mixed to increase its contact with a catalyst composition coated on a surface of the partition walls. The honeycomb structure may have a corrugated thin metal foil. Alternatively, the honeycomb structure may have a unitary structure formed by sintering an extruded body comprising a powder material.

Abstract: A catalytic converter for converting sulfur dioxide to sulfur trioxide comprising an exterior shell of a heat resistant weldable metal; foundations from which the shell vertically extends; an interior tube of same metal vertically disposed within the shell and defining a passage; the interior tube having i. a first inlet aperture through which the passage receives a first portion of a sulfur dioxide-containing gas from a source of such gas; ii. a second inlet aperture through which the passage receives a second portion of the sulfur dioxide-containing gas; and iii.

Abstract: Apparatus for carrying out a method for the catalytic conversion of waste gases such as those which accumulate in the synthesis of vinyl chloride is presented in which the waste gases are successively treated at an elevated temperature with a catalyst for oxidative cracking and with a catalyst for oxidative afterburning.

Abstract: An SCR reactor (50) is disclosed which permits ready removal of a catalyst bed (58) from the SCR reactor and provides an effecting sealing mechanism between the catalyst bed (58) and the frame (52) of the SCR reactor. The frame is provided with side rails (54, 56) which have individual indentations spaced therealong. The catalyst bed is provided with wheels (60A, 60B, 60C) along its length which permit the catalyst bed to be rolled along the side rails until the catalyst bed is moved into its installed position whereupon the wheels descend into the indentations (62), causing the weight of the catalyst bed to form an effective seal between a downwardly face edge (64) on the catalyst bed and the frame (52).

Abstract: A method for removing fumigation gasses from fumigated structures is provided. Air is directed from a structure through an adsorption unit and then recirculated back into the structure. A fan directs air through the adsorption unit. The adsorption unit contains an annularly shaped adsorption bed and an inner passage way and outer passage way through which fumigation gasses are directed. A lower adsorption efficiency per pass through the adsorption bed is used in conjunction with multiple passes with the method of the present invention.

Abstract: In accordance with this invention, a waste gas containing toxic NF.sub.3 gas is contacted with a honeycomb structure of a carbonaceous material to thereby convert NF.sub.3 into nontoxic CF.sub.4 and N.sub.2 gases with high efficiency.

Abstract: A method of purifying combustion gases by removing acid gases therefrom, wherein a stream of combustion gases is caused to flow in contact with a surface of an acid gas remover formed from a mixture including a calcium compound for neutralizing said acid gases, and a binder for holding together particles of the calcium compound. Also disclosed is an incinerator incorporating the acid gas remover.

Abstract: A method and apparatus are provided for oxidizing unoxidized fuel in combustion systems in which the air and fuel are not completely and uniformly mixed, the average air fuel ratio being sufficient for complete oxidation, but portions not containing sufficient air for complete oxidation. A bed of a readily reducible metal oxide, the reduced form of this metal oxide being readily oxidized, is placed within the combustion system. The air and fuel are passed through the bed at an elevated temperature, the metal oxide oxidizing those portions not containing sufficient air for complete combustion, and then being reoxidized by those portions which contain more than sufficient air for complete combustion.

Abstract: A converter comprising an exterior shell of a strong, heat resistant weldable metal having an interior core tube formed of such metal and vertically disposed, partway within the shell from an upper part thereof. A foundation is provided from which the shell vertically extends. A plurality of catalyst beds are arranged one above the other within the shell and comprise at least one full catalyst bed having a first full bed extending essentially across a lower part of the shell, and at least one annular catalyst bed having a first annular bed between the shell at an upper part thereof and the core tube. Partitions define with the core tube a plurality of distinct, non-concentric, non-coaxial gas passages within the core tube. Each of the annular beds is in singular, gaseous communication within the shell with at least one of the passages. The converter has minimal axial gaseous flow transfer passages for maximum catalyst bed volume while preserving axial access to the beds.

Abstract: A refractory body assembly includes a refractory container, a refractory body having multiple gas passageways and positioned within the container, and a barrier layer in the intermediate space. The barrier layer is a rigid foam which, in a basic form, may be composed essentially of a crystalline aluminum phosphate, and may be produced by heating a mixture of a source of phosphorous, an organic liquid buffer and a source of aluminum. The assembly may further include a positioning ring for positioning and maintaining the refractory body in a central position until the barrier layer becomes rigid.

Abstract: The invention relates to a soot-particle filter for after-treatment of the exhaust gases of diesel engines by oxidation and the supply of thermal energy. Exhaust-gas-permeable supporting tubes extend in a filter housing and have an applied catalytic filter winding, via which exhaust gases flow radially from outside to inside into the supporting tubes. An exhaust-gas-permeable insert with a catalytically effective surface is arranged in each supporting tube to thereby enhance the effectiveness of the filter without increasing its overall size.

Abstract: An electrically regenerable diesel particulate trap or filter comprising an electrically resistive expanded metal sheet or sleeve which when energized heats the filter element to a temperature sufficient to allow the trapped soot particulates to burn.

Abstract: An efficient, economical, compact diesel particulate filter comprising a casing comprising a plurality of perforated, supported, rigid tubes wherein the perforated surface of each tube is covered by a filtering element comprising substantially helically cross-wound inorganic yarn, and wherein the yarn is cross-wound to provide four-sided openings.

Abstract: An efficient, economical, compact diesel particulate trap has a plurality of perforated hollow tubes, on each of which a heat-resistant yarn is helically cross-wound to provide a plurality of layers that function as a filtering element. The yarn, which preferably is a continuous-filament ceramic yarn, has a core from which filaments or fiber segments project outwardly and intermesh with fiber segments of laterally spaced cores to provide traps. The cores of yarn convolutions of at least one layer are laterally offset from the cores of convolutions of an adjacent layer to deflect into tortuous paths gases flowing generally radially through the filtering element.

Abstract: A batch method and apparatus provides controlled release of gaseous air contaminants into the atmosphere through catalytic oxidation while minimizing both the energy required and the volume of waste gas exhausted into the atmosphere. The device has a recirculating gas stream driven by a recirculation fan which moves gas, normally and naturally present at start-up, through a bed of granular catalyst, in an oxidizer and into contact with the surface of a process-gas heater and back to the recirculation fan. The gaseous contaminants may be drawn into this system using a vacuum pump. Control of catalyst temperature is achieved based upon the novel system configuration, and without the introduction of dilution air, and the contaminant gas is introduced without controlling either flow rate or temperature.

Abstract: A filter for removing impurities from waste gases, and especially from the waste gases of an internal combustion engine, includes a filter body consisting of a plurality of compression moulded, high temperature resistant, sintered filter plates consisting of metal powder, metal chips, metallic fibres or a mixture of these materials, which are arranged on top of or behind one another and kept at a distance from one another by spacers, to form between them a plurality of flow channels. The flow channels are open at one end and closed at the other end in order to form inlet and outlet channels. The walls of the filter plate situated between the inlet and outlet channels constitute filter surfaces. The filter plates are formed by filter discs lying on top of one another, arranged in a filter housing and having a free or open central interior space, so that the waste gases flow radially through the filter discs from the outside towards the interior space or from the interior space towards the outside.

Abstract: The invention relates to a reactor for carrying out gas phase chemical reactions and having at least one compartment (8) incorporating a catalytic lining (31) in which radially circulates at least one gas. As the upper wall (32), it has at least one layer (19) of at least one flexible material such as a tight, inert, refractory material fabric. This fabric optionally cooperates with a first layer of balls (12) resting on the fabric. It is placed on the biller (31) in such a way that it completely covers the latter. The reactor is used in the reforming of fuels.

Abstract: A catalytic converter for use in the exhaust system of an internal combustion engine having a rigid outer canister with a catalyst support disposed therein for movement between a first position adjacent in inlet end of the canister and a second position located in spaced relationship with said inlet end. In its first position, the substrate seals the inlet thereby forcing the entire exhaust flow through the fluid flow passages within the catalyst support which are in axial alignment with the converter inlet. The effect of forcing the totality of flow reduced volume of the substrate to the entire thermal energy of the exhaust stream thereby assisting in a reduction in the catalyst light-off time. Following catalyst light-off, the catalyst support is moved to its second, spaced position in which the entire frontal area of the converter is exposed to the exhaust flow thereby lowering backpressure of the converter and preventing converter overtemperature problems.

Abstract: An exhaust gas cleaning device is disposed within an exhaust pipe connected to the exhaust port of an internal combustion engine. The exhaust gas cleaning device comprises an inner pipe disposed coaxially within the exhaust pipe with an annular space defined therebetween, the inner pipe being provided with a plurality of perforations, and laminated structures disposed upon the inner and outer surfaces of the inner pipe and including a catalyst for cleaning unburned components of the exhaust gas flowing within the exhaust pipe, each of the laminated structures being formed of a material which is not deleterious to the catalyst. The laminated structure includes a catalyst carrier layer formed by, in accordance with one method, fusibly injecting a catalyst including a solution onto an intermediate layer formed upon the inner and outer surfaces of the inner pipe and drying the same so as to remove the liquid component therefrom.

Abstract: An exhaust gas cleaner comprising (a) at least one filter made of a heat-resistant and electrically insulating material for trapping floating fine particles in an exhaust gas; and (b) at least a pair of electrodes stacked with the filter alternately, voltage being applied between the adjacent electrodes to burn electrically conductive and burnable fine particles trapped in the filter by heat generated by a current flowing between the adjacent electrodes, and the direction of the flow of the exhaust gas in the filter being essentially parallel to that of the laminate surface of the electrodes. The filter may carry a catalyst which functions to reduce harmful gas components in the exhaust gas.

Abstract: A mounting assembly for an exhaust gas catalyst includes a metallic exhaust gas catalyst carrier body and a tubular jacket in which the catalyst carrier body is disposed. The catalyst carrier body is fastened to the tubular jacket while permitting lengthwise expansion of the catalyst carrier body, through the use of beads encircling at least part of the catalyst carrier body and corresponding formations formed in the tubular jacket into which the beads protrude in the form of slots and keys. The catalyst carrier body and the beads are disposed at axial and radial distances from the tubular jacket and the formations.

Abstract: A device for use in heating or incineration plants for use as a waste gas filter to eliminate and/or convert harmful elements in the waste gas is disclosed. The device of the subject invention can eliminate soot and soot-like products, or it can serve as a heat exchanger or as a mixing component for a furnace. The device of the subject invention comprises a sintered body made of one or more compression molded highly heat resistant sintered parts. The sintered body manifests high porosity and/or a multitude of intake and outlet channels.

Abstract: The invention relates to a reinforced catalytic unit intended for purifying exhaust gases. The unit is a reinforced helical catalytic unit formed from a corrugated foil band and a straight foil band. The foil bands are coated in advance with both a layer of support material and a layer of catalyst material and are placed one on top of the other. They are then secured to a central shaft around which the catalytic unit is formed by winding of the bands helically around the central shaft. Thereafter, end supports are secured to the ends of the shaft in such a way that they press somewhat to the inside of the unit and prevent movement of the foil bands in relation to each other.