Abstract: Non-woven mat including magnesium aluminum silicate glass fibers and amorphous refractory ceramic fibers, bio-soluble ceramic fibers, and/or heat-treated silica fibers. Embodiments of the nonwoven mat surprisingly have a Resiliency Value after three thermal cycles from 25° C. to 700° C./400° C. of the Real Condition Fixture Test at least 1.1 times greater than the Resiliency Value of a comparable non-woven mat consisting of any individual type of fibers of the non-woven mat. The non-woven mats are useful, for example, in pollution control devices and other thermal insulation applications.

Abstract: There is disclosed a honeycomb structure including: a plurality of honeycomb segments each having porous partition walls, and plugged portions arranged in open frontal areas of the predetermined cells; joining portions in which the plurality of honeycomb segments are joined; and an outer peripheral wall, and having: an aspect ratio (a long axis/a short axis) of 1.2 or more, wherein corners which are regions of the joining portions in the region of 10 mm or less from each intersection between the joining portion and the outer peripheral wall along a direction of the short axis are present in the region of 25 mm or less, and a thickness of each of the joining portions is 0.5 mm or more and 5 mm or less, and a thickness of each of the other joining portions is 1.5 mm or less.

Abstract: A method for engine-out soot flow rate prediction of an exhaust gas treatment system is provided. A measured level of oxides of nitrogen in the exhaust gas treatment system is received. An engine fuel injection timing and air-fuel ratio of an engine producing the oxides of nitrogen are also received. An engine timing factor is determined based on the engine fuel injection timing. An engine air-fuel ratio factor is determined based on the engine air-fuel ratio. An engine-out soot flow rate prediction is generated based on the measured level of oxides of nitrogen, the engine timing factor, and the engine air-fuel ratio factor.

Abstract: A honeycomb structure includes a ceramic block. A plurality of honeycomb fired bodies include first-shaped units, second-shaped units, and third-shaped units. The first-shaped units include peripheral first-shaped units. Each of the peripheral first-shaped units is disposed in such a manner as to have two sides. One side of the two sides faces one of adjacent sides of one third-shaped unit among the third-shaped units with an adhesive layer therebetween. Another side of the two sides faces one of adjacent sides of another third-shaped unit among the third-shaped units with the adhesive layer therebetween. The two sides of each of the peripheral first-shaped units or extensions of the two sides are each neither substantially parallel nor substantially perpendicular to an extension of a second side and an extension of a first side of each of the second-shaped units.

Abstract: An artifact free inert filter medium for collection of organic particles is a fibrous material is developed that can be formed into filters used in ambient and indoor air sampling equipment for subsequent laboratory chemical analysis by one of several thermal optical or thermal analysis methods for the determination of organic carbon (OC), elemental carbon (EC), pyrolysis carbon (PC), and total carbon (TC, sum of OC+EC), carbon fractions determined by thermal or thermal-optical analysis methods (OC1, OC2, OC3, OC4, PC, EC1, EC2, EC3) as well can be analyzed in the laboratory for individual organic species by a range of thermal analysis and or extraction/analysis methods.

Abstract: The present disclosure relates to porous ceramic articles and a method of making the same. The porous ceramic articles have microstructure of sinter bonded or reaction bonded large pre-reacted particles and pore network structure exhibiting large pore necks. The method of making the porous ceramic articles involves using pre-reacted particles having one or more phases. A plastic ceramic precursor composition is also disclosed. The composition includes a mixture of at least one of dense, porous, or hollow spheroidal pre-reacted particles and a liquid vehicle.

Abstract: A ceramic honeycomb structure suitable for particulate filters, having an inlet face and an outlet face, comprising a plurality of inlet cells and a plurality of outlet cells extending through the structure from the inlet face to the outlet face, the inlet cells being open at the inlet face and closed where adjoining the outlet face, and the outlet cells being open at the outlet face and closed where adjoining the inlet face. The inlet and/or outlet cells are quadrangular in cross-section and are arranged in an alternating pattern; the outlet cells may have a cross-sectional area generally smaller than that of inlet cells and no point of a given inlet cell is closer to an adjacent inlet cell than to an adjacent outlet cell. A process for preparing the ceramic honeycomb structure is also disclosed.

Abstract: A porous body consists essentially of a plurality of ceramic particles having an average size ranging from 8 to 100 nm. The ceramic particles are bonded to adjacent ceramic particles with a strength sufficient to render the porous body self-supporting. The porosity ranges from 30 to 70 vol. % and the average pore size ranges from 5 to 50 nm. The porous body may be manufactured by preparing a dispersion comprising the ceramic particles and a polymer matrix material in a solvent, removing the solvent by heating and/or evaporation, forming a preform of the dried material, and firing the preform to remove the polymer matrix material and bond the ceramic particles to each other. The porous body is useful as a filter element in a system adapted to remove nanoscale particles from a fluid stream.

Abstract: A honeycomb structure includes a ceramic block including at least one honeycomb fired body. The at least one honeycomb fired body has cell walls and a peripheral wall. The peripheral wall is formed around the at least one honeycomb fired body. The peripheral wall of the at least one honeycomb fired body, which forms a periphery of the ceramic block, is a stepped peripheral wall provided with a level difference. The level difference includes a projected portion and a recessed portion in a cross section perpendicular to a longitudinal direction of the at least one honeycomb fired body. At least one of the projected portion and the recessed portion is formed by at least one of a curve line and a straight line in the cross section perpendicular to the longitudinal direction of the at least one honeycomb fired body by being subjected to chamfering.

Abstract: A control apparatus for an internal combustion engine detects an amount of particulate matter contained in an exhaust gas in an exhaust passage, according to an electrical property across electrodes of a particulate matter sensor disposed in the exhaust passage of the internal combustion engine. The term “electrical property” here refers to a property that changes with the amount of particulate matter deposited, for example, a current value of when a predetermined voltage is applied. After the internal combustion engine is started and detection of the amount of the particulate matter is completed, an element section of the particulate matter sensor is set to a predetermined temperature range. The particulate matter deposited on the element section is thereby burned and removed. The control apparatus maintains the element section in the predetermined temperature range after burning and removing the particulate matter until the internal combustion engine stops.

Abstract: A device for at least one self-heated and dense ceramic tube for gas separation. The device includes at least one dense ceramic tube in an environment accessible to a mixture of gases, the at least one tube acting as a diffusion membrane for separating at least one gas from the mixture of gases. Two electrical contacts are provided which allow connecting a power supply to the ceramic tube and driving an electric current through the ceramic tube. The contacts can be in the farm of short coils wrapped around the ceramic tube at difference places. When a voltage is applied to the contacts, an electrical current flows from one contact to the other through the ceramic tube. The current in the ceramic tube heats the tube. Thus, the tubes heat themselves. The hot tube allows separating a gas from the mixture of gases. The driving force for the diffusion is achieved by a pressure difference generated by pumping at the side of the separated gas and pressing at the side of the mixture of gases.

Abstract: An object of the present invention is to detect any breakdown or failure of a particulate filter more appropriately. A failure detecting apparatus for detecting failure of a particulate filter according to the present invention comprises an acquiring section which acquires an amount of PM contained in an exhaust gas allowed to outflow from the particulate filter; a regeneration process executing section which executes a filter regeneration process for oxidizing and removing PM deposited in the particulate filter; and a failure judging section which judges that the particulate filter is in the failure state if a decreased amount of the amount of PM contained in the exhaust gas acquired by the acquiring section, during a predetermined period of time as started from a point in time at which the execution of the filter regeneration process performed by the regeneration process executing section is completed, is not equal to or larger than a predetermined reference amount.

Abstract: The present invention relates to a porous alpha-SiC-containing shaped body with a gas-permeable, open-pored pore structure comprising platelet-shaped crystallites which are connected to form an interconnected, continuous skeletal structure, wherein the skeletal structure consists of more than 80 wt.-% alpha-SiC, relative to the total weight of SiC, a process for producing same and its use as a filter component.

Abstract: An exhaust gas treatment system for an internal combustion engine is provided comprising an exhaust gas conduit, a particulate filter (“PF”) device, a hydrocarbon source and an electronic control module including operative logic which when implemented. The PF has a filter structure for removal of particulates in the exhaust gas and is selectively regenerated based on an amount of particulates trapped within the filter structure of the PF device. The control module is in communication with the internal combustion engine and the hydrocarbon source, and receives a regeneration signal indicating the amount of particulates trapped within the filter structure of the PF device. The electronic control module includes control logic for monitoring the internal combustion engine prior to a regeneration event. The electronic control module includes control logic for determining a plurality operating parameters of the internal combustion engine based on the monitoring.

Abstract: A honeycomb structure includes a honeycomb block including at least one honeycomb fired body. The at least one honeycomb fired body has cell walls extending along a longitudinal direction of the at least one honeycomb fired body to define cells. The cells include peripheral cells in contact with peripheral walls of the at least one honeycomb fired body and basic cells positioned to be surrounded by the peripheral cells. The peripheral cells include an irregular cell having a cell cross-sectional area larger than a cell cross-sectional area of one of the basic cells.

Abstract: The present invention aims to provide a honeycomb structure capable of preventing a plugging failure and forming cracks by heat shock which are caused by a cell having a small cross-section.

Abstract: The invention is to provide an aluminum titanate-based ceramics showing a good mechanical strength. The invention is an aluminum titanate-based ceramics obtained by firing a starting material mixture which contains a titanium element and an aluminum element, and further contains a chromium element and/or a tungsten element. Preferably, a content of a chromium source which contains the chromium element is from 0.001 to 5 parts by mass, and a content of a tungsten source which contains the tungsten element is from 0.001 to 1.0 part by mass relative to 100 parts by mass of the starting material mixture.

Abstract: Provided is a technique to manufacture a honeycomb structure reducing a width of dimensional difference generated during firing between an end part and a central part and having excellent thermal shock resistance, and the method includes: a honeycomb formed body preparing step of extruding a kneaded material including a cordierite forming raw material A, to prepare a formed body; a plugged honeycomb formed body preparing step of filling cell openings thereof with a plugging material which includes a forming raw material containing a cordierite forming raw material B and resin balloon of 1.0 to 15 mass % and has a difference in firing shrinkage rate of ?1.0 to +2.0% from the formed body, to prepare a plugged formed body; and a honeycomb structure preparing step of firing the prepared plugged formed body, to prepare a honeycomb structure provided with porous plugged portions.

Abstract: There is disclosed a porous material which has an improved thermal shock resistance. The porous material contains aggregates and a composite binder. The composite binder includes glass as a binder and mullite particles as reinforcing particles, and the mullite particles are dispersed in the glass. The aggregates are connected to each other by the composite binder in a state where pores are formed in the porous material. Preferably, a lower limit of a percentage of a content of the composite binder to a total mass of the aggregates and composite binder is 12 mass %, and an upper limit of the percentage of the content of the composite binder to the total mass of the aggregates and composite binder is 50 mass %. Preferably, the glass contains MgO, Al2O3 and SiO2 and further contains at least one selected from a group consisting of Na2O, K2O and CaO.

Abstract: The present disclosure relates to a diesel exhaust treatment device including a catalytic converter positioned upstream from a diesel particulate filter. An electric heater is positioned between the catalytic converter and the diesel particulate filter. A shore station can be used to provide power and combustion air to the diesel exhaust treatment device during regeneration of the diesel particulate filter.

Abstract: The present invention is intended to detect a failure of a PM filter with a higher degree of accuracy. The present invention is provided with: a PM trapping efficiency calculation part to calculate a PM trapping efficiency (which is a proportion of an amount of particulate matter trapped with respect to an amount of inflow particulate matter) based on an amount of inflow particulate matter obtained by an inflow particulate matter obtaining part, and an amount of outflow particulate matter detected by a PM sensor; and a failure detection part to make a determination that a failure has occurred in the PM filter, in cases where there has appeared a tendency for the PM trapping efficiency to decrease during a period of time until the execution of the following filter regeneration processing is started after the completion of execution of the filter regeneration processing.

Abstract: A particulate matter detecting apparatus for an internal combustion engine that can estimate a discharge amount of the particulate matter accurately. The particulate matter detecting apparatus for an internal combustion engine, comprises: a sensor disposed at an exhaust passage of the internal combustion engine, the sensor including a pair of electrodes for detecting particulate matter in an exhaust gas; means for estimating a discharge amount of the particulate matter based on an output of the sensor, and means for acquiring a predetermined parameter that serves as an index for a rate with which the particulate matter in the exhaust gas is deposited on the sensor. The discharge amount estimating means corrects an estimated value of the discharge amount of the particulate matter based on the parameter acquired by the parameter acquiring means.

Abstract: A particle capture unit adopted to be exposed to a space in which particles fly includes at least a first layer formed of a plurality of first fiber-like materials and a second layer formed of a plurality of second fiber-like materials. The first fiber-like materials are thinner than the second fiber-like materials and arrangement density of the first fiber-like materials in the first layer is higher than that of the second fiber-like materials in the second layer, the second layer is interposed between the first layer and the space, and the first and second layers are hardened and bonded together by sintering.

Abstract: Inner cases are connected to outer cases through joining flanges which protrude toward outer peripheries of the outer cases. A plurality of combinations each including filters, the inner cases, and the outer cases are provided. Both the joining flanges are sandwiched and fixed between a pair of sandwiching flanges, thereby connecting the plurality of outer cases to each other.

Abstract: A ceramic honeycomb filter comprising a ceramic honeycomb structure having large numbers of flow paths partitioned by porous cell walls, and plugs disposed in the flow paths alternately on the exhaust gas inlet or outlet side, to remove particulate matter from an exhaust gas passing through the porous cell walls; the porous cell walls having porosity of 45-75%, the median pore diameter A (?m) of the cell walls measured by mercury porosimetry, and the median pore diameter B (?m) of the cell walls measured by a bubble point method meeting the formula of 35<(A?B)/B×100?70, and the maximum pore diameter of the cell walls measured by a bubble point method being 100 ?m or less.

Abstract: A partial wall-flow filter, having a honeycomb structure including an inlet end, an outlet end, and parallel channels disposed and configured to flow fluid from the inlet end to the outlet end. The channels are defined by a plurality of intersecting porous walls. The partial wall-flow filter has a filtration region of channels plugged at the outlet end and a bypass region of unplugged channels. An N/S ratio of the filter material is less than or equal to about 0.5, less than or equal to about 0.3, less than or equal to about 0.1, or even 0, where N is a pressure drop difference induced by deep bed soot and S is a pressure drop change from 0 grams per liter (g/l) to about 5 g/l for a conditioned curve induced by cake bed soot, where N and S are measured on a full wall-flow filter of the filter material.

Abstract: A thin-walled porous ceramic wall-flow filter is disclosed. The filter produces a relatively lower pressure drop coupled with relatively high initial filtration efficiency (FE0), and may enable packaging the filter in a smaller volume. The filter includes a plurality of porous ceramic walls forming cell channels. At least some of the cells are plugged forcing some exhaust gases through the walls, thereby filtering out entrained particulates. The walls have a wall thickness (Twall) wherein 102 ?m?Twall<279 ?m, and a median pore diameter (MPD), and wherein 10<Twall/MPD, and may also be <40. The relatively small median pore diameter (MPD) in comparison to the wall thickness (Twall) allows the use of thinner ceramic walls that provide less flow resistance than thicker walls while maintaining sufficient initial filtration efficiency (FE0). Furthermore, such thin-walled filter structure coupled with unequal inlet/outlet area ratio (Ai/Ao) may allow filter lengths to be additionally shortened.

Abstract: There is provided a honeycomb structure including a honeycomb base material including a porous partition wall parent material; plugged portions; and a porous collecting layer disposed on the surface of the partition wall parent material in the remaining cells. A melting point of a material constituting the collecting layer is higher than that of a material constituting the partition wall parent material, a pore surface area per unit volume of the collecting layer is 2.0 times or more a pore surface area per unit volume of the partition wall parent material, and a thickness of a portion of the collecting layer which penetrates into pores of the partition wall parent material is 6% or smaller of that of each of partition walls including the partition wall parent material and the collecting layer.

Abstract: An exhaust gas emission control system includes a cylindrical inflow body and an inflow pipe into which exhaust gas flows. The exhaust gas emission control system also includes a cylindrical outflow body and an outflow pipe from which the exhaust gas flows. The inflow pipe is provided with a louver member that covers an opening of the inflow body near an upstream side of an exhaust gas flow direction. The louver member is provided with slits and inclined plates capable of changing a flow direction of the exhaust gas passing through the slits into a desired direction.

Abstract: A honeycomb structure has hexagonal cells surrounded by partition walls and a cylindrical outer peripheral wall covering the honeycomb structure. The partition walls have sides and intersection points. Six sides form a hexagonal cell. Three sides as the partition walls are joined to each other at a corresponding intersection point. The sides are divided into sides of basic partition walls and strength reinforcement sides as strength reinforcement partition walls. The strength reinforcement partition wall is thicker than the basic partition wall. Three strength reinforcement sides are joined at a corresponding strength reinforcement intersection point. Each strength reinforcement side in one group joined at one strength reinforcement intersection point is not connected continuously to each strength reinforcement side in another group joined at another strength reinforcement intersection point.

Abstract: A system for treating diesel exhaust is disclosed. The system includes a first filter including layers of filtration material positioned between layers of corrugated metallic foil. The metallic foil defines a honeycomb arrangement of longitudinal passageways from an upstream end to a downstream end and also openings for allowing exhaust to pass between adjacent longitudinal passageways of the metallic foil. The filtration material is positioned such that exhaust between the adjacent longitudinal passageways passes through the filtration material. The metallic foil also includes flow diverting structures to divert flow within the longitudinal passageways through the openings. A second filter is positioned downstream from the first filter. The second filter defines a honeycomb arrangement of longitudinal passageways. The longitudinal passages are selectively plugged adjacent upstream and downstream ends to force flow radially through walls between the longitudinal passages of the second filter.

Abstract: An exhaust gas aftertreatment system for an engine can perform manual regeneration control for regenerating a particulate removal filter by increasing the engine rotation speed. The system can suppress the engine rotation speed increase while maintaining the exhaust gas temperature required to regenerate the particulate removal filter. The system can set the target engine rotation speed to a first set value when a regeneration instruction signal from a manual regeneration switch is received. When, although the engine rotation speed falls within a predetermined engine rotation speed range including the first set value that is the target engine rotation speed for a predetermined time period, the exhaust gas temperature does not reach the filter's regeneration temperature within the predetermined time period, the target engine rotation speed is repeatedly reset by being increased from the first set value by a predetermined rotation speed.

Abstract: A method for cleaning and checking a particle filter of a motor vehicle is provided. In a first step soot particles which have collected in the particle filter are burnt off. In a second step ash located in the particle filter is blown out using compressed air. A cleaning device for a particle filter of a motor vehicle is also provided.

Abstract: Provided is a ceramic filter that can be used for a long time at a high temperature, including a porous substrate having a partition wall that defines and forms a cell extending from one end face to the other end face, the porous substrate being made of ceramic a separation membrane disposed on a wall face in the cell; and glass seal disposed at the one end face and the other end face so as not to block open frontal areas of the cell. The glass seal includes glass and inorganic particles dispersed in the glass, the inorganic particles being made of clay, and a ratio of a coefficient of thermal expansion of the glass seal to a coefficient of thermal expansion of the porous substrate is 90% or less.

Abstract: A partial wall-flow filter has an inlet end, an outlet end, and a plurality of parallel channels disposed and configured to flow fluid from the inlet end to the outlet end. The channels are defined by a plurality of porous walls. A first portion of the channels have a first hydraulic diameter Dh1, a second portion of the channels have a second hydraulic diameter Dh2 smaller than the first hydraulic diameter Dh1, and the ratio of Dh1:Dh2 is in the range of 1.1 to 1.6. At least a portion of channels having hydraulic diameter Dh1 are plugged at the outlet end, and channels having hydraulic diameter Dh2 are flow-through channels.

Abstract: A honeycomb structure 100 has a plurality of flow paths 110a and 110b which are partitioned by partition walls 120 and are substantially parallel to each other; and one end of the flow path 110a is plugged by a plugging part 130 at one end surface 100a of the honeycomb structure 100, and one end of the flow path 110b is plugged by a plugging part 130 at the other end surface 100b of the honeycomb structure 100, wherein, in an image of the partition walls 120 obtained by X-ray CT measurement, when the number of communicating holes detected when resolution of the image is 1.5 ?m/pixel is defined as X, and the number of communicating holes detected when resolution of the image is 2.5 ?m/pixel is defined as Y, Y/X is 0.58 or more.

Abstract: A method of manufacturing a honeycomb structure comprises a step of forming a molded article by molding a raw material containing a ceramic powder and a pore-forming agent; and a step of manufacturing a honeycomb structure by sintering the molded article, wherein the pore-forming agent is powder formed of a material that disappears at a sintering temperature or less where the molded article is sintered, the powder is obtained by mixing a small particle size powder and a large particle size powder, a median particle size of which a ratio of a cumulative mass with respect to a total mass of the small particle size powder is 50% is 5 to 20 ?m, a median particle size of which a ratio of a cumulative mass with respect to a total mass of the large particle size powder is 50% is 30 ?m or more, and a ninety-percentage particle size of which a ratio of a cumulative mass with respect to a total mass of the large particle size powder is 90% is 80 ?m or less.

Abstract: There is provided a honeycomb filter including a honeycomb base material including a porous partition wall parent material; plugged portions arranged in open frontal areas of predetermined cells in an end surface on an inflow side of the fluid, and open frontal areas of the remaining cells in an end surface on an outflow side of the fluid; and a porous collecting layer disposed on the surface of the partition wall parent material in the remaining cells. In a cross section orthogonal to an extending direction of the cells, a shape of the cells is a rectangular shape, and a thickness of a portion of the collecting layer which is positioned in each of corner portions of each of the cells is from one to three times that of a portion of the collecting layer which is positioned in the center of each of sides of the cell.

Abstract: The invention relates to diesel soot particulate filter cartridge having a central filter cartridge axis. The filter cartridge has a radial flow. The filter cartridge comprises a porous structure. The porous structure is coiled around the central filter cartridge axis. The porous structure comprises non-sintered metal fibers, said fibers having a roughness being higher than 1.7. The invention further relates to a method of manufacturing a diesel soot particulate filter cartridge. Furthermore the invention relates to a multicartridge diesel soot particulate filter. The flow through the multicartridge diesel soot particulate filter is axial while the flow through the filter cartridges is radial.

Abstract: Dehumidifiers having improved heat exchange blocks and associated methods of use and manufacture are disclosed. A heat exchange system in accordance with a particular embodiment can include a plurality of elements with a plurality of airflow channels. A plurality of peripheral spacers are positioned toward edges of neighboring elements and extend in a first direction. A first airflow path extends in the first direction, and is at least partially defined by the corresponding elements and the peripheral spacers. A second airflow path is defined by the airflow channels and extends in a second direction, and an airflow blocker is positioned at a corner portion of the elements to prevent fluid communication between the first and the second airflow paths at the elements. In certain embodiments, the heat exchange system can further include a dehumidifier having an evaporator positioned between the first and second airflow paths.

Abstract: Composite-membrane monoliths include a cordierite monolith having a cordierite-ceramic composite membrane bonded to surfaces thereof with a surface median pore size. The cordierite-ceramic composite membrane has membrane surfaces with a membrane median pore size of 0.3 ?m or less. The cordierite-ceramic composite membrane may be a composite formed by firing the cordierite monolith subsequent to applying a cordierite-ceramic composite slip to surfaces thereof. The cordierite-ceramic slip may include cordierite particles and ceramic particles. The cordierite particles may have a cordierite median particle size smaller than the surface median pore size. The ceramic particles may have a ceramic median particle size smaller than the cordierite median particle size.

Abstract: Cellular ceramic articles are manufactured from a green cellular ceramic body that includes a binder material and a plurality of channels. At least one of the channels is coated with a slurry that includes a green coating composition and a solvent to form a coating layer. The binder material is insoluble in the solvent.

Abstract: A method of removing ash from a wall flow type particulate filter which is arranged in an exhaust passage of an internal combustion engine in which combustion is performed in an excess of oxygen for trapping particulate matter in exhaust gas, using a solid acid which is carried on the particulate filter, renders the state of the particulate filter a state where the exhaust gas which flows into the particulate filter is lowered in concentration of oxygen and the particulate filter is raised in temperature, and then renders the state of the particulate filter a state where the exhaust gas which flows into the particulate filter in an oxidizing atmosphere contains SOx.

Abstract: In an exhaust gas treatment device provided with: an exhaust gas treatment unit in which an oxygen combustion boiler 1 using coal as fuel, a denitration device 3, an air preheater 4, a dust-collection device 5, a desulfurization device 6, and a carbon dioxide recovery device 8 are sequentially arranged from the upstream side to the downstream side of an exhaust gas duct; and an exhaust gas circulation unit which branches off from the exhaust gas duct at an outlet of the dust-collection device 5 or an outlet of the desulfurization device 6 and through which the exhaust gas is preheated by the air preheater 4 and returned to the oxygen combustion boiler 1, a heat-recovery heat exchanger 13 that adjusts a gas temperature at an inlet of the dust-collection device 5 to be not greater than an acid dew point of SO3 and not lower than a water dew point is provided between the air preheater 4 and the dust-collection device 5, a reheating heat exchanger 13 that adjusts a gas temperature to be not lower than the acid de

Abstract: A honeycomb filter includes a honeycomb base material, plugged portions, and a porous collecting layer disposed on the surface of the partition wall parent material in at least the remaining cells. The collecting layer has a constitution in which a plurality of particles combine or intertwine with one another, and the collecting layer includes fibrous fiber particles as the plurality of particles, and includes the particles having an average fiber diameter of 0.1 to 15 ?m and an average aspect ratio of 3 or larger. An open area ratio of the surface of the collecting layer is 20% or larger.

Abstract: A mat includes a first main face and a second main face opposite to the first main face. At least two layers include a first layer occupying a first area from the first main face along a thickness direction of the mat. The first layer includes a first long fibrous substance which includes an inorganic fibrous substance. A second layer is adjacent to the first layer. The second layer includes a short fibrous substance which includes an inorganic fibrous substance and which has an average fiber length shorter than an average fiber length of the first long fibrous substance. An intertwined portion extends from the first main face to the second main face. The intertwined portion includes the first long fibrous substance and the short fibrous substance being more closely intertwined with each other than the inorganic fibrous substances in a portion except the intertwined portion.

Abstract: The disclosed exhaust treatment device for a diesel engine can prevent heat damage to a DPF when regenerating said DPF. If a selection device (7), which selects whether to allow or prohibit an automatic DPF regeneration process, is set to prohibit the automatic DPF regeneration process, a DPF regeneration control device (4) is made able to start a process to cancel execution of the automatic DPF regeneration process. If the selection device (7) is set to allow the automatic DPF regeneration process, the DPF regeneration control device (4) retracts the cancellation of the automatic DPF regeneration process, allowing execution of the previously-cancelled automatic DPF regeneration process to begin.

Abstract: A fine particle collecting filter includes a honeycomb structure in which a plurality of honeycomb segments are integrally joined by a joining material, and has a constitution where an exhaust gas allowed to flow from an inlet end surface into cells passes partition walls, and then flows out from an outlet end surface to the outsides of the cells. The partition walls are made of a material containing SiC as a main component, at least one of an average open diameter of pores of an inlet side of the exhaust gas passing the partition wall and an average open diameter of the pores of an outlet side of the exhaust gas passing is from 0.1 to 5 ?m, an average pore diameter of the whole partition wall is from 10 to 30 ?m, and a thermal conductivity of the partition walls at room temperature is from 80 to 110 W/mK.

Abstract: An exhaust treatment unit including a longitudinal core around an axis, a support mat, and powdered insulation impregnated between first and second layers of the support mat. In assembly, the mat is first wrapped around the core once, and powdered insulation is applied to the surface of the unwrapped portion of the mat prior to further winding whereby powdered insulation is disposed between mat layers after further winding.

Abstract: There is provided a honeycomb filter including: a honeycomb base material; plugged portions; and a porous collecting layer disposed on the surface of the partition wall parent material in at least the remaining cells. The collecting layer has a constitution in which a plurality of particles combine or intertwine with one another, and the collecting layer includes flat plate-like particles as the plurality of particles. The plurality of particles are particles in which an average long diameter is 0.2 ?m or larger and smaller than 10 ?m, an average value of ratios (long diameters/short diameters) of the long diameters to the short diameters of the respective particles is smaller than 3, and an average value of ratios (the long diameters/thicknesses) of the long diameters to thicknesses of the respective particles is 3 or larger. An open area ratio of the surface of the collecting layer is 10% or larger.