Abstract: A honeycomb structure wherein the thickness of each partition wall is 50.8 ?m inclusive to 161.5 ?m exclusive, the cell density is 15.5 to 62.0 cells/cm2, the cell opening ratio of the honeycomb structure body is 76 to 91%, the porosity of the partition walls is 35 to 45%, the average pore diameter of the partition walls is 2 ?m inclusive to 10 ?m exclusive, the material for the partition walls includes at least one member selected from the group consisting of cordierite, aluminum titanate, silicon carbide, alumina and mullite, and the value obtained by dividing the average pore diameter of the partition walls by the thickness of the partition walls is larger than 0.04 but smaller than 0.065.

Abstract: A holding sealing material includes a plurality of mats and at least one belt-shaped body. The plurality of mats include inorganic fibers and are layered. The plurality of mats are bundled by the at least one belt-shaped body. The at least one belt-shaped body has no fixing force which fixes the plurality of mats to the at least one belt-shaped body.

Abstract: An exhaust gas purifying member comprises a housing an exhaust gas purification block placed in the housing, and an exhaust gas purification block-retaining element inserted in an annular space between the housing and the block. The retaining element is, during manufacture of the member, made from a material including at least one nonfunctional component intended to disappear after a characteristic period of using the member. A method of manufacturing the member comprises assembling the housing, the retaining element, and the exhaust gas purification block to obtain a housing whereof a diameter is equal to a predetermined diameter, and with the installation density of the retaining element being equal to a target installation density after the characteristic usage period of the member.

Abstract: A method is provided for installing a multi-layer mat (24) in an exhaust gas aftertreatment or acoustic device. The method includes the steps of wrapping the mat (24) around an inner surface of the device along the same plane for at least a complete wrap around the inner surface; subsequently wrapping the mat (24) around the already completed wrap such that each of the successive wraps of the mat (24) are offset a constant distance from the plane of the previous wrap; a final wrap of the mat (24) wherein the mat is wrapped along a final plane for at least a complete wrap around the catalyst; and installing the mat (24) in the device (18) after the wrapping steps.

Abstract: There is provided an exhaust gas purifying filter, which includes an inflow surface into which exhaust gas including particulate matter flows, an exhaust surface from which purified gas is exhausted, and a filter substrate which is constructed of a porous body, the filter substrate including a porous partition and a gas passage which is enclosed by the porous partition, a porous film which includes silicon carbide is provided on a surface of the porous partition, and in a pore diameter distribution of the porous film, pores with the pore diameter of 0.01 ?m or more and 3.0 ?m or less are 70% or more of total volume of the pores, and pores with the pore diameter of 0.01 ?m or more and 0.3 ?m or less are 5% or more and 90% or less of total volume of the pores.

Abstract: An exhaust gas processing device includes a pillar honeycomb structure, a first inorganic mat member, a first cylindrical metallic member, a second inorganic mat member, a second cylindrical metallic member, and an insulating layer. The insulating layer has a thickness of about 20 ?m to about 400 ?m and is provided at least one of a first part between an inner surface of the first cylindrical metallic member and the first inorganic mat member, a second part between an outer surface of the first cylindrical metallic member and the second inorganic mat member, and a third part between an inner surface of the second cylindrical metallic member and the second inorganic mat member.

Abstract: Electricity is suppressed from flowing to a case (2) of an electric heating type catalyst (1).

Abstract: The invention concerns a method for supplying iron, via the fuel, to the particulate trap of a diesel engine exhaust in a form suitable for promoting trap regeneration. The method involves the addition to the fuel of a defined colloid of iron oxide. Combustion of this colloid produces iron-containing compounds, especially iron oxides, which collect in association with carbonaceous particulate matter in the particulate trap, and function to promote the combustion of this matter. The colloid in particular shows a lower level of associated deposit formation on the fuel injectors than the iron additives of the prior art. The method is thus particularly suitable for modern engines showing increased susceptibility to fuel injector deposits. The colloid also shows a balance of properties providing excellent suitability for use as an additive in fuels, and especially in diesel engine on-board dosing devices.

Abstract: A ceramic honeycomb structure having a large number of flow paths partitioned by porous cell walls, the cell walls meeting the conditions; (a) the cell walls having porosity of 55-80%, (b) the cell walls having a median pore diameter D50 (measured by mercury porosimetry) of 5-27 ?m, (c) pores open on cell wall surfaces having an opening area ratio of 20% or more, (d) pores open on cell wall surfaces having a median opening diameter d50 (determined from equivalent circle diameters on an area basis) of 10-45 ?m, (e) the density of pores open on cell wall surfaces having equivalent circle diameters of 10 ?m or more and less than 40 ?m being 350/mm2 or more, (f) the maximum inclination of a curve of a cumulative pore volume relative to a pore diameter (determined from a pore distribution measured by mercury porosimetry) being 1.6 or more, and (g) a ratio D50/d50 of the median pore diameter D50 to the median opening diameter d50 being 0.65 or less.

Abstract: A holding sealing material includes inorganic fibers, a mat shape, a first and a second end faces, a contact section and a void-forming section. The first end face and the second end face are approximately parallel in a width direction. The contact section includes a first distance between the first and the second end faces. The first distance is longest in a length direction. The void-forming section includes a second distance between the first and the second end faces. The second distance is shorter than the first distance. The holding sealing material has a structure to provide a void in a vicinity of the first and the second end faces of the void-forming section in a state where the holding sealing material is rolled up so that the first end face is made in contact with the second end face of the contact section.

Abstract: The invention provides a flexible and self-supporting insulating end cone liner comprising resilient and compressible intumescent or non-intumescent material molded into a single, continuous piece having a three dimensional cone shape, with the insulating material comprising inorganic fibers and an organic binder, and a pollution control device that includes such an end cone liner.

Abstract: A filter element, in particular for filtering exhaust gases of an internal combustion engine, includes mutually parallel flow channels, at least two filter segments being provided which each have a subset of flow channels, the filter segments having a spacing from one another and being interconnected via connecting device(s) arranged integrally with the filter segments.

Abstract: An exhaust gas purifying apparatus which can reduce or prevent the shifting of a honeycomb catalyst member relative to a cushion member, even if hard vibrations are applied to the exhaust gas purifying apparatus, for example, during operation of a vehicle. In some embodiments, there can be no increase of the radial pressure of the cushion member applied to the honeycomb catalyst member. In some embodiments, an exhaust gas purifying apparatus can comprise a honeycomb catalyst member carrying metallic catalyst, wherein the member can be contained in a cylindrical container via a cushion member. The catalyst structural member can be formed of a sheet-like catalyst structure and can be manufactured by a wet paper-making method. The structural member can be secured to the cushion member by press-fitting the structural member into the cushion member.

Abstract: An air filter that includes a primary filter and a polishing filter. The primary filter comprises a monolith 10 that contains active-particulate. The air-to-be-filtered travels through the primary filter in a path generally parallel to the passageways 12. The polishing filter 36 has first and second major surfaces and also contains active-particulate. The polishing filter is generally arranged such that air travels from the first major surface to the second major surface when passing through it. The inventive filter demonstrates extraordinary performance over the same primary and polishing filters taken individually.

Abstract: An erosion resistant mounting material comprises: a mounting material comprising inorganic fibers and having a peripheral edge; and a layer of reinforcing composition inwardly disposed on the inorganic fibers along the peripheral edge. The reinforcing composition comprises at least one compound represented by the formula: (Mm+)d((ZpOq(OH)r)n?)e.(H2O)f M represents a cationic species other than H; O represents oxygen; Z represents boron or phosphorus; f is a real number greater than or equal to zero; d, n, q, and r are integers greater than or equal to zero; e, m, and p are integers greater than or equal to one; and d times m equals e times n. The mounting material is useful in pollution control devices. A method of making the mounting material is also disclosed.

Abstract: An exhaust gas purification system for an internal combustion engine of a motor vehicle is provided. The system includes a first particulate filter element and a second particulate filter element, which is connected downstream of the first particulate filter element and through which flows the exhaust gas that emanates from the first particulate filter element. The first particulate filter element operates as a system filter and the second particulate filter element operates as a diagnostic filter. A charge of the diagnostic filter can be determined, and the functional capability of the system filter can be deduced based thereon.

Abstract: An exhaust treatment device includes an inner shell, an outer shell and insulation material positioned between the inner shell and the outer shell. An inlet tube has an end in communication with a cavity defined by the inner shell. A substrate for treating engine exhaust is positioned within the inner shell. A baffle plate includes a plurality of apertures positioned such that the exhaust passes through the apertures prior to entering the substrate. The baffle plate supports an end of the inner shell and the inlet tube.

Abstract: A filter device for filtering gaseous fluids has a spiral-shaped wound filter path having parallel flow channels for the fluid. The flow channels end in a wound state at an axial face of the filter element at axially different positions. At the second, opposite axial face, the filter element has a geometry deviating from that of the first face.

Abstract: A filter for filtering particulate matter (PM) from exhaust gas emitted from a compression ignition engine, which filter comprising a porous substrate having inlet surfaces and outlet surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a porous structure containing pores of a first mean pore size, wherein the porous substrate is coated with a wash coat comprising a plurality of solid particles comprising a molecular sieve promoted with at least one metal wherein the porous structure of the wash coated porous substrate contains pores of a second mean pore size, and wherein the second mean pore size is less than the first mean pore size.

Abstract: A method for cleaning particle filters in exhaust gas systems of combustion engines, in particular diesel engines in vehicles. In order to clean a particle filter, a noncombustible, ash-free cleaning fluid is sprayed into the particle filter at high pressure by a spray nozzle, across an area of said filter through which the exhaust gas flows during the operation of the combustion engine, in a quantity such that the interior of the particle filter is substantially completely soaked. Also provided is an apparatus for carrying out the method, which includes a container containing, under pressure, the fluid to be injected into the particle filter to be cleaned, an outlet valve, and a spray nozzle, which can be connected to the outlet valve via a hose and can be inserted into a space in the exhaust gas system situated before or after the particle filter.

Abstract: A method of manufacturing a honeycomb body is disclosed having the steps of mixing inorganic source materials, a nut shell pore former, and forming aids to form a plasticized batch, wherein the nut shell pore former has a particle size distribution with 20 ?m?dp50?70 ?m, and forming the plasticized batch into the honeycomb body having a plurality of channels formed by intersecting walls. Green honeycombs and porous ceramic honeycombs produced by the method are also disclosed.

Abstract: A method of manufacturing an exhaust gas purifying apparatus includes providing an exhaust gas-treating body. A holding sealing material is provided. The holding sealing material includes inorganic fibers. The holding sealing material has a first end face and a second end face each provided approximately in parallel with a width direction. The holding sealing material is wound around a periphery of the exhaust gas-treating body to form a gap between the first end face and the second end face. The exhaust gas-treating body with the holding sealing material is housed in a casing. At least one of a first electrode member and a first sensor is disposed at the gap of the holding sealing material so that at least one of the first electrode member and the first sensor is connected to the exhaust gas-treating body, passes through the holding sealing material, and penetrates the casing.

Abstract: In accordance with the invention there are devices and processes for making ceramic nanofiber mats and ceramic filters for use in high temperature and in corrosive environments. The process for forming a ceramic filter can include electrospinning a preceramic polymer solution into a preceramic polymer fiber having a diameter from about 10 nm to about 1 micron and forming a preceramic polymer fiber web from the preceramic polymer fiber onto a collector. The process can also include pyrolyzing the preceramic polymer fiber web to form a ceramic nanofiber mat having a diameter less than the diameter of the preceramic polymer fiber, the ceramic nanofiber mat comprising one or more of an oxide ceramic and a non-oxide ceramic such that the ceramic fiber mat can withstand temperature greater than about 1000 ° C.

Abstract: There is provide a honeycomb filter which can suppress generation of cracks in plugged portions due to heat generated by burning of a PM during regeneration and comprises a honeycomb basal body including porous partition walls arranged to form a plurality of cells disposed in parallel with one another and including inflow cells and outflow cells which are formed adjacent to the inflow cells; first plugged portions with which one end of each of the inflow cells is plugged; second plugged portions with which another end of each of the outflow cells is plugged; porous collecting layers formed on the inflow-cells side surfaces of the partition walls; and end aggregate layers made of a particulate aggregate material and formed on the inflow-cells-side surfaces of the first plugged portions, and a thickness of the end aggregate layers is from 0.5 to 5 mm.

Abstract: A holding sealing material includes a mat body. The mat body includes a first inorganic fiber and a second inorganic fiber. The first inorganic fiber contains about 60% by weight or more of alumina. The second inorganic fiber contains about 67% by weight or more of silica. The first inorganic fiber and the second inorganic fiber are in a mixed state.

Abstract: A mat includes inorganic fibrous substances, first and second main faces, first and second side faces and intertwined portions. The intertwined portions respectively extend from needle piercing points of the first main face to needle piercing points of the second main face. A first virtual straight line and each of second virtual straight lines intersect with each other at a first angle of less than about 90° when viewed from the first side face to the second side face. The first virtual straight line and each of third virtual straight lines intersect with each other at a second angle of more than about 90° when viewed from the first side face to the second side face. The second virtual straight lines and the third virtual straight lines intersect with each other at a third angle when viewed from the first side face to the second side face.

Abstract: A holding sealing material includes inorganic fibers, a mat shape, a first end face and a second end face and a penetration portion. The mat shape has a width direction, a length direction and a thickness direction. The first end face and the second end face are each provided approximately in parallel with the width direction. The penetration portion penetrates the holding sealing material in the thickness direction.

Abstract: The invention relates to a honeycomb structure including a set of adjacent channels, each channel being in communication with upstream and downstream surfaces, respectively, via upstream and downstream openings, such that said set of channels forms cross-sectional upstream and downstream patterns on said upstream and downstream surfaces, respectively. According to the invention, at least one of the upstream and downstream surfaces has an error-proofing mark extending over fewer than 50 channels and making it impossible to completely stack any one of the upstream and downstream patterns onto the other, the outer perimeter of the upstream and/or downstream pattern being symmetrical or having an asymmetry that extends over fewer than 10 channels. The invention can be used in the filtration of particles contained it the exhaust gases of internal combustion engines, in particular diesel engines.

Abstract: Fused particles having the following chemical composition, as a percentage by weight on the basis of the oxides: more than 15% but less than 55% of Al2O3; more than 25% but less than 60% of TiO2; less than 20%, in total, of at least one oxide of an element M1, chosen from MgO and CoO; more than 0.7% but less than 20%, in total, of at least one oxide of an element M2, chosen from the group formed by Fe2O3, Cr2O3, MnO2, La2O3, Y2O3 and Ga2O3; less than 20%, in total, of at least one oxide of an element M3, chosen from the group formed by ZrO2, Ce2O3 and HfO2; and less than 30% of SiO2. Ceramic product or material obtained by sintering said particles.

Abstract: Fused particles containing, by weight percent: more than 15% but less than 55% of Al2O3; more than 20% but less than 45% of TiO2; more than 3% but less than 30% of SiO2; less than 20%, in total, of at least one oxide selected from the group consisting of ZrO2, Ce2O3, and HfO2; less than 1% of MgO; and more than 1% but less than 15%, in total, of at least one selected from the group consisting of CaO, Na2O, K2O, SrO, B2O3, and BaO. Also, a ceramic product or material obtained by sintering the fused particles.

Abstract: A method of manufacturing a ceramic diesel particle filter (DPF) and a DPF manufactured by the method, the DPF having a ceramic filter body (1) including gas channels (18, 18?) with planar and porous filter segments (3), which are provided for the exhaust gas stream (2) to flow through them transversely to the face of the filter segments (3). The filter body (1) is formed by sintering at least one ceramic-impregnated fiber web (4) in a firing step under heat such that fibers (5) of the fiber material are burned off and the ceramic material (6) is sintered together to form the porous filter segment (3) between its two surfaces (7, 8). At least one fiber web (4) is corrugated to form the gas channels (18, 18?) and rolled up to form the filter body (1), and the cross section of at least a portion of the gas channels (18, 18?) changes from an inlet end (33) to a discharge end (34).

Abstract: A catalyst converter having a retaining mat with a thickness wherein the apparent density during assembling becomes 0.25 g/cm3 or more and less than 0.51 g/cm3 and the outside diameter D1 of a catalyst retainer is set according to interference of the retaining mat in passing through a press-in tool and interference of the retaining mat after being pressed into a retaining tube. The retaining mat is formed of a non-expandable inorganic fiber sheet. A pressing force moves the catalyst retainer in the axial direction with respect to the retaining tube while the catalyst converter device is used with the length L2 along the longitudinal direction of the catalyst retainer in the retaining mat wound around the catalyst retainer being set longer than the winding diameter D1 of the retaining mat around the catalyst retainer so that a retaining force R greater than the pressing force F can be secured.

Abstract: An exhaust processing device includes a main body tube portion and a closing tube portion. The main body tube portion includes an opening in an axial end thereof, houses a main body exhaust path in an inside thereof, which allows an exhaust gas to pass therethrough. The closing tube portion includes a plate portion and a tubular portion. The plate portion covers the opening of the axial end of the main body tube portion. The tubular portion radially outwardly protrudes from an outer peripheral surface of the main body tube portion, and is integrated with the plate portion. The tubular portion houses an exhaust path in an inside thereof, which communicates with the main body exhaust path. The tubular portion of the closing tube portion includes a first split half portion integrally molded with the plate portion, and a second split half portion joined to the first split half portion.

Abstract: A manufacturing method by which alumina-silica based fibers excellent in mechanical strength can be readily and securely obtained. The method obtains precursor fibers as a material by using an alumina-silica based fiber spinning stock solution for use in an inorganic salt method. Next, the precursor fibers are heated under an environment which makes it difficult to carry out an oxidizing reaction on the carbon component contained in the precursor fibers. Thus, the precursor fibers are sintered to obtain alumina-silica based fibers.

Abstract: To obtain a catalytic converter device that can suppress a drop in the effect of heating a catalyst carrier caused by water droplets produced in an exhaust pipe. A holding mat that holds a catalyst carrier in a case cylinder is given a three-layer structure comprising an inside fiber layer, a solid layer, and an outside fiber layer. The solid layer projects toward an upstream side from an upstream-side end face of the catalyst carrier, and an interstice portion is configured between the projecting portion and the case cylinder. Water droplets adhering to the inner peripheral surface of the case cylinder do not reach the catalyst carrier because the projecting portion serves as a barrier.

Abstract: The honeycomb structure is provided with a honeycomb structural section, a pair of lateral electrodes on the side face of the honeycomb structural section, and at least one intermediate layer between the honeycomb structural section and the lateral electrodes. The honeycomb structural section has silicon carbide particles having an average particle diameter of 3 to 40 ?m and silicon, and the ratio (Si/SiC) of silicon (Si) to silicon carbide (SiC) is 10/90 to 40/60. The lateral electrodes have an average particle diameter of the silicon carbide particles of 10 to 70 ?m and a Si/SiC ratio of 20/80 to 50/50. The intermediate layer has an average particle diameter of silicon carbide particles and Si/SiC between those of the honeycomb structural section and those of the lateral electrodes. The electric resistance between the lateral electrodes of the honeycomb structural section is 2 to 100?.

Abstract: An exhaust gas purifying device includes: a case body including a plurality of cases, and heat insulating rings and heat insulators that cover the case body over a substantially-entire area from an upstream side to a downstream side in an exhaust gas flowing direction. The heat insulators are placed inward from joint portions between the cases, and the heat insulating rings are placed in such a manner as to bridge over the joint portions between the cases. With the above arrangement, the surface temperature of the case body can be reliably prevented from becoming high.

Abstract: A soot particle filter according to the invention can be particularly used in motor vehicles or heating systems using liquid and solid fuels. The device is particularly characterized by a time controlled variable regeneration of the soot particle storage (10) and soot particle burn-off. The device is in particular catalytic. The device comprises at least one filter housing (2) having an input (3), an output (4) and a filter element (6). A soot particle storage chamber (10) is further provided in the filter housing (2) and comprises an access (19) that is particularly angled and tapered toward the inside. The inner chamber of the soot particle storage (10) is lined with precious metal discs (11). Said discs have holes, are angled and/or corrugated. The precious metal discs and/or a precious metal mesh (11) are at least partially catalytically coated. An ignition device (12) is arranged in the filter housing (12), for example a glow plug and/or a glow filament.

Abstract: A mat or mat-pre-form hybrid for use in an exhaust gas treatment device, such as catalytic converters and diesel particulate traps that are used in automotive exhaust systems. The mat or hybrid may be used as a mounting mat to mount a fragile monolith within an outer housing of an exhaust gas treatment device or as thermal insulation in an end cone of the exhaust gas treatment device.

Abstract: A reactor with minimal dead volume especially suited to reverse-flow applications comprises: a) a reactor body; b) a first head engaged with said reactor body; c) a first conduit extending from outside said head to at least partially through said head; and d) a first valve in flow communication with said first conduit controlling fluid flow along a flow path extending from the first valve and through the reactor body. The reactor is especially suited for use in a process for rapid stream-switching of at least two streams in a reverse-flow reactor.

Abstract: The invention relates to a method for producing a ceramic filter element in an exhaust gas filter for an internal combustion engine, in particular a diesel particulate filter, wherein a base paper carrier web is soaked with a ceramic slip and then burnt out. The base paper carrier web uses a thickness and/or structure that varies over the width and/or length of the base paper carrier web.

Abstract: Disclosed are ceramic honeycomb articles which possess a unique microstructure characterized by porosity between 40% and 70%, and the presence of coarse pores exhibiting a depth equivalent to the thickness of the cell wall and a dimensional width, in the plane of the cell wall, exhibiting a diameter that is at least as large as the thickness of the cell wall. The articles exhibits reduced filtration efficiency coupled with low pressure drop across the filter, and a reduced regeneration need. Such ceramic articles are particularly well suited for filtration applications, such as off-road and retro-fit diesel exhaust filters or DPFs. Also disclosed is a method for manufacturing the ceramic article wherein the pore former is capable of forming coarse pores.

Abstract: A method is provided for installing a multi-layer mat (24) in an exhaust gas aftertreatment or acoustic device. The method includes the steps of wrapping the mat (24) around an inner surface of the device along the same plane for at least a complete wrap around the inner surface; subsequently wrapping the mat (24) around the already completed wrap such that each of the successive wraps of the mat (24) are offset a constant distance from the plane of the previous wrap; a final wrap of the mat (24) wherein the mat is wrapped along a final plane for at least a complete wrap around the catalyst; and installing the mat (24) in the device (18) after the wrapping steps.

Abstract: A cordierite-based ceramic honeycomb filter comprising a honeycomb structure having a large number of flow paths partitioned by porous cell walls, and plugs alternately formed in said flow paths on the exhaust-gas-inlet side or the exhaust-gas-outlet side for permitting an exhaust gas to pass through said porous cell walls to remove particulate matter from the exhaust gas, said porous cell walls having porosity of 45-58%, an average pore size of 15-30 ?m, the volume of pores having pore sizes exceeding 50 ?m being more than 10% and 25% or less of the total pore volume, the volume of pores having pore sizes of 100 ?m or more being 1-8% of the total pore volume, the volume of pores having pore sizes of less than 10 ?m being 3-10% of the total pore volume, and said pores having a pore size distribution deviation ? [=log(D20)?log(D80)] of 0.

Abstract: A plugged honeycomb structure including particulate matter (PM) trapping layers disposed on the surfaces of the partition walls extending up to inflow side end faces of the plugging portions that plug outflow cells so that adjacent PM-trapping layers with the partition walls and the plugging portion therebetween are disposed so as to continue on the inflow side end faces of the plugging portions. The PM-trapping layers are extended up to the inflow side end faces of the plugging portions to form protruding portions having a protrusion height corresponding with 0.1 to 2 times the length of a side of the outflow cells from the inflow side end faces of the plugging portions toward the outside of the cell extension direction.

Abstract: A collapsible underhood container for mounting under a vehicle hood with a portion of the collapsible underhood container extending into an area between the hood and an underhood safety plane when in an extended position, the container comprising: a lower housing, an upper container portion and a locking feature. The lower housing is fixed relative to the vehicle and has a bottom and side walls. The upper container portion has walls adjacent to and telescopically slidable on the side walls of the lower housing and a top, with the top located in the area between the hood and the safety plane. The locking feature maintains the upper container relative to the lower housing when in the extended position and releases the upper container portion to slide downward relative to the lower housing to a collapsed position when the hood contacts the upper container.

Abstract: A honeycomb filter includes a ceramic laminated body including columnar porous ceramic members and an adhesive layer combining the columnar porous ceramic members with one another. The columnar porous ceramic members each have a partition wall and through holes, the through holes extend in parallel with one another in a length direction of the columnar porous ceramic members, the partition wall separates the through holes and filters particulates in an exhaust gas, and the adhesive layer includes an inorganic binder, an inorganic fiber, inorganic particles and an inorganic balloon.

Abstract: A ceramic honeycomb structure comprised of at least two separate smaller ceramic honeycombs that have been adhered together by a cement comprised of inorganic fibers and a binding phase wherein the smaller honey-combs and fibers are bonded together by the binding phase which is comprised of an silicate, aluminate or alumino-silicate. The fibers have a multi-modal size distribution in which some fibers have lengths of up to 1000 micons and other fibers have lengths in excess of 1 mm. The cement composition may be made in the absence of other inorganic and organic additives while achieving a shear thinning cement, for example, by mixing oppositely charged inorganic binders in water together so as to make a useful cement composition for applying to the smaller honeycombs to be cemented.

Abstract: A holding sealer for keeping a exhaust gas processing device, in which comprises a sheet member including inorganic fibers, the inorganic fibers are oriented in a predetermined angle except parallel against a direction of a thickness of a sheet member within at least a portion of the sheet member.

Abstract: The present invention relates generally to the field of emission control equipment for boilers, heaters, kilns, or other flue gas-, or combustion gas-, generating devices (e.g., those located at power plants, processing plants, etc.) and, in particular to a new and useful method and apparatus for preventing the plugging, blockage and/or contamination of an SCR catalyst. In another embodiment, the method and apparatus of the present invention is designed to protect an SCR catalyst from plugging and/or blockage from large particle ash that may be generated during combustion.