19 results about "Ceramic honeycomb" patented technology

The present invention provides an SCR catalyst and a preparation method therefor and a use thereof. The SCR catalyst comprises a flow-through ceramic honeycomb carrier and a first coating layer. The first coating layer is coated on the pore channel surface of the flow-through ceramic honeycomb carrier. The first coating layer comprises a Mn / Cu-SSZ type first molecular sieve, a cerium oxide, an aluminum oxide, and a manganese oxide. The preparation method for the modified SCR catalyst provided by the present invention has a simple process. After being hydrothermally aged at 800°C, the obtained catalyst still has excellent denitration performance in a low temperature range of 150-200°C without losing denitration performance in a medium-high temperature range of 250-500°C. The catalyst can achieve good NOx conversion over a wider operating temperature window.

Ceramic honeycomb bodies and methods for their manufacture are provided. The ceramic honeycomb body comprises a bulk density of less than 210 g / L, a geometric surface area (GSA) greater than 93 in−1 (3.66 mm−1), a mechanical integrity factor (MIF) greater than 0.28%, and a back pressure factor (BPF) greater than 0.4 mm2.

This invention discloses a carbon capture article comprising: (i) a ceramic honeycomb assembly including an inlet end, an outlet end, and intersecting walls defining cells through which fluid can flow; (ii) a zeolite coating at least partially covering the intersecting walls of the ceramic honeycomb assembly; and (iii) a silicone resin coating at least partially disposed on the zeolite coating. The zeolite coating may be a 13-X type zeolite. The silicone resin may be a siloxane resin. This invention also discloses a method for manufacturing the carbon capture article, the method comprising a silicone coating step, the silicone coating step comprising coating a silicone resin at least partially onto the zeolite coating to form the carbon capture article, the zeolite coating at least partially covering the intersecting walls of the ceramic honeycomb assembly. Finally, this invention discloses a method for capturing carbon dioxide from the air, the method comprising a flow step, the flow step comprising passing a fluid containing carbon dioxide (CO2) molecules through the carbon capture article.

This utility model discloses a hollow high-strength ceramic tile, relating to the field of ceramic tiles, including an upper surface layer and a lower surface layer; an intermediate support mechanism connecting the upper and lower surface layers, the intermediate support mechanism being configured in a honeycomb shape; a surrounding plate fixed to the outside of the intermediate support mechanism, a connecting block fixedly connected to one side of the surrounding plate, and a connecting groove opened on the other side of the surrounding plate, the connecting block and the connecting groove being positioned correspondingly; the intermediate support mechanism being configured in a honeycomb shape, the intermediate support mechanism being high-alumina ceramic or zirconia toughened ceramic, the honeycomb structure not only reduces the overall weight of the tile, but also provides sufficient strength and stability, while providing space for the filling of lightweight heat insulation material, further improving the heat insulation performance of the tile, and the geometry of the honeycomb structure can effectively disperse stress, providing high strength and good compressive strength.

1. A method for making a ceramic honeycomb wall-flow filter substrate supporting an on-wall coating, wherein a section of the on-wall coated filter substrate analyzed by mercury porosimetry has a pore volume of 0.05 to 0.5 μm diameter as a percentage of the mercury intrusion volume of at least 15.0% of the section, and (i) an equivalent spherical diameter D(v,0.5) of 0.5 to 1 μm, which is equal to 10 to 35 wt. % of water, carboxylic acid, inorganic oxide particles, or a particulate insoluble cellulose pore former of heterogeneous morphology, with D(v,0.9) of 8 to 20 μm, relative to 100 wt. % of inorganic oxide particles. 4 μm and having a modal aspect ratio (width / length) of 0.3 to 0.9; (ii) coating the slurry onto at least first channels of a substrate, the substrate having an average pore size (D50) of 6 to 15 μm and a porosity of less than 60% before any coating; and (iii) drying and calcining the slurry-coated substrate, wherein the product of step (iii) has a porosity of 0.07 to 0.4 g / in based on the substrate weight before step (ii). 3 A method wherein sufficient slurry is coated onto a substrate to have a coating loading of (4.3-24.4 g / L) and an average on-wall coating thickness of the coated substrate is 5-70 μm.

This invention relates to the field of waste gas treatment equipment technology, and discloses a regenerative thermal incineration waste gas treatment device, including a support frame. Three regenerative chambers are fixedly connected to the top of the support frame, and a common combustion chamber is fixedly connected to the top of the three regenerative chambers. This invention addresses the problem of local overheating and thermal shock cracking of ceramic honeycomb. An auxiliary mechanism and a pressure mechanism are set inside the device. After the waste gas is purified, a hydraulic press pushes a hydraulic push rod upward, which in turn moves the highest fixed frame two upward. As the hydraulic push rod continues to move upward, the six fixed frames two will separate, and the air inlet pipe will generate a negative pressure suction force, forcing the purified high-temperature gas in the common combustion chamber to flow downward and heat the honeycomb ceramic two and honeycomb ceramic one. This causes multiple sets to separate, allowing the oxygen remaining inside the honeycomb ceramic one and honeycomb ceramic two to diffuse outward at once, while reducing the length of the "combustion channel" and effectively reducing the probability of combustion and explosion.

This invention discloses a high-temperature resistant microwave absorbing honeycomb ceramic, its preparation method, and its applications, relating to the field of porous ceramic materials technology. The process includes obtaining a honeycomb skeleton; introducing a porous structural material onto the honeycomb skeleton to obtain a honeycomb structure preform; introducing a ceramic phase onto the honeycomb structure preform to obtain a porous composite; and removing the honeycomb skeleton from the porous composite to obtain the high-temperature resistant microwave absorbing honeycomb ceramic. The ceramic prepared by this invention has a porous wall structure and a hollow skeleton, mainly solving the shortcomings of existing high-temperature resistant microwave absorbing honeycomb ceramics, such as complex preparation processes, poor microwave absorption performance, and difficulty in control.

The utility model discloses a high-strength durable slag line brick for a steel ladle, which relates to the technical field of slag line bricks and comprises a slag line brick body, four corners of the outer wall of the slag line brick body are arc corners, and a plurality of radial reinforcing ribs uniformly extend to the periphery along the radial direction of the outer wall of a support rib to reach an anti-oxidation coating. According to the utility model, the metal ceramic honeycomb-shaped supporting framework is arranged in the chamfered square hole and is integrally sintered with the hole wall to construct a high-strength and high-stability three-dimensional bearing network structure, so that the compressive strength of the slag line brick is remarkably enhanced, the slag line brick can bear a harsh working environment, and the service life of the slag line brick is prolonged. According to the slag line brick provided by the invention, the radial reinforcing ribs are arranged on the surface of the slag line brick, and are matched with a dual-protection mechanism of the porous reinforcing body and the anti-oxidation coating, so that the permeation of slag is effectively blocked, all-directional protection is provided for the slag line brick, and in addition, the radial reinforcing ribs further disperse stress concentration, avoid structural damage caused by overlarge local stress and prolong the service life of the slag line brick. Therefore, the overall durability and reliability of the slag line brick are greatly improved.

A ceramic honeycomb structure comprising large numbers of flow paths longitudinally formed by cell walls arranged in a lattice pattern in cross section, and an outer peripheral wall formed around the flow paths; in a cross section perpendicular to the longitudinal direction, fan-shaped bulges projecting in a fan shape toward the flow paths from cell wall intersections at which the cell walls are crossing; the circumscribed circles of circular portions of the fan-shaped bulges at all cell wall intersections having a constant radius; and when the distance between the center point of the circumscribed circle and the center point of the cell wall intersection is defined as a center point distance S, a center point distance So in the outer peripheral portion of the ceramic honeycomb structure and a center point distance Sc in the center portion meeting Sc<So.

A ceramic honeycomb structure comprising pluralities of honeycomb segments each having pluralities of longitudinally penetrating flow paths partitioned by porous cell walls and plugs formed in the end portions of the flow paths, and a bonding material layer boding the peripheral walls of the honeycomb segments, the bonding material layer comprising silicon carbide particles as aggregate and a bonding phase bonding the silicon carbide particles, the bonding phase comprising at least a cordierite phase and a spinel phase, the molar ratio M1 of the cordierite phase [=cordierite phase / (cordierite phase+spinel phase)] being 0.50 or more and less than 1.0, and the content of (cordierite phase+spinel phase) in the bonding phase being 50% or more by mass.

A cement composition for application to a ceramic substrate, such as a cement skin composition for application to a ceramic honeycomb body is provided. The cement composition includes a first source of inorganic particles, a second source of inorganic particles having a mean particle diameter<50 nm, wherein the first source of inorganic particles is present at about ≤15% (by dry weight), a second source of inorganic particles having a mean particle diameter of from about 50 nm to about 700 nm, wherein the second source of inorganic particles is present at from about 5% to about 15% (by dry weight), and a water-soluble organic binder. An inorganic fibrous material can be present at about ≤15% (based on dry weight). The amount of at least one of the first source of inorganic particles or the inorganic fibrous material is greater than 0% (by dry weight).

The invention discloses a thermal cycle smelting furnace for waste aluminum regeneration smelting, which comprises a furnace body and a thermal cycle box, a fire-resistant light brick layer, a graphite crucible and a gas uniformizing box are arranged in the furnace body, a combustion head and an igniter are arranged at the top of the gas uniformizing box, gas is supplied for combustion through a gas inlet pipe, and a rotatable ceramic honeycomb body is arranged in the thermal cycle box. A servo motor is used for driving to alternately switch a flue gas waste heat recovery mode and a combustion-supporting air preheating mode, the heat efficiency is remarkably improved, the energy consumption is reduced, a furnace body adopts a multi-layer heat preservation structure and is provided with an automatic sealing feeding system, a positioning frame and a graphite crucible are controlled to be in sealed butt joint through an electric push rod, oxidation burning loss is reduced, and a heat storage feeding roller is arranged in a feeding box; waste heat is used for preheating waste aluminum materials, and quantitative feeding and heat energy recycling are achieved. Through the heat cycle technology, closed smelting and intelligent feeding, the problems that a traditional smelting furnace is high in energy consumption and serious in oxidation are solved, and the system is suitable for efficient regeneration of waste aluminum and has the advantages of energy conservation and environmental protection.

The utility model relates to the technical field of aluminum veneers, and discloses a fireproof aluminum veneer which comprises a fireproof assembly, a micropore heat dissipation structure and a connecting assembly. According to the fireproof aluminum veneer, by optimizing the internal structure and materials of the fireproof assembly, the fireproof performance of the aluminum veneer can be effectively improved, the fireproof aluminum veneer is suitable for high-rise buildings, subway stations, tunnels and other places with high fireproof requirements, the ceramic honeycomb core material is filled with the fireproof flame-retardant material, the aluminum veneer body cannot deform due to high temperature in a fire disaster, and the fireproof performance of the aluminum veneer is improved. Meanwhile, the characteristics of light weight and high strength are kept, heat accumulation can be avoided through the arranged micropore heat dissipation structure, the fire-resistant time is prolonged, and the fireproof heat dissipation structure is suitable for being applied to outer walls and curtain walls of buildings, and the inner fireproof coating, the outer fireproof coating and the fireproof sealing strip can provide all-around fireproof protection; and the aluminum alloy honeycomb core and the fireproof core layer are embedded in the aluminum veneer body, so that the weight can be reduced, the strength can be improved, an air heat insulation layer can be formed, and the heat conduction rate can be reduced.

The utility model discloses a continuous circulating acid preparation device for a stainless steel pickling process, and belongs to the technical field of metal surface treatment. According to the technical scheme, the continuous circulation acid preparation device for the stainless steel acid pickling process comprises an acid pickling tank, a plurality of acid pickling bins are arranged in the acid pickling tank at intervals, a circulating pump is arranged at the bottom of each acid pickling bin, and the input end and the output end of each circulating pump are connected with the acid pickling bins through guide pipes. A filtering assembly is arranged on an input end guide pipe of the circulating pump; according to the utility model, through the synergistic effect of the circulating pump in the pickling bin and the sliding acid preparation unit and the combination of the real-time PH detection and control unit, the dynamic balance adjustment of the acid liquor concentration is realized, and meanwhile, the high-efficiency filtration of the ceramic honeycomb filter element and the waste acid distillation recovery process are adopted; the problems of uneven acid liquor concentration, impurity deposition and low waste acid treatment efficiency in the traditional process are effectively solved, and the comprehensive advantages of improving the acid pickling quality, reducing the maintenance cost and reducing the environmental pollution are achieved.

The application discloses a ceramic hollow plate air preheater with an inter-plate wall type, air and flue gas respectively pass in and out of the hollow ceramic plate, high-density air-tight ceramic fiber sealing gaskets seal the two ends of the plate and the inter-plate, the plate in is similar to ceramic honeycomb, and the plate out is similar to plate heat exchanger. 2 / m 3 The application has the high specific surface area of ceramic honeycomb regenerator up to 1000m 2 / m 3 order of magnitude, does not need to reverse and has high-temperature air preheating up to 1400 DEG C or above, retains the high heat energy utilization efficiency of regenerative combustion, and gets rid of the frequent reversing defects of regenerative combustion, i.e. reversing valve, rotating mechanism and other dynamic seals, and transmits flue gas heat to air in a very small space and temperature difference.

The utility model provides a flue gas waste heat buffer output device, include: shell, inside is equipped with vertical baffle, vertical baffle divides the high temperature heat storage room and heat exchange chamber of setting up side by side in shell portion, be provided with flue gas flow regulation unit on vertical baffle, flue gas flow regulation unit includes the gate that can vertically lift and is used for driving gate to lift the actuating mechanism, be provided with ceramic honeycomb heat accumulator in high temperature heat storage room, be provided with vertical tube -shell heat exchanger in heat exchange chamber, include multiple vertical setting heat exchange pipe, cold air supply unit, cold air supply unit includes air blower, with the bottom of multiple heat exchange pipe's cold air inlet header, and with the top of multiple heat exchange pipe's hot air outlet header, air blower links to each other cold air inlet header, the utility model discloses through high temperature heat storage room to the fluctuation's flue gas carries out the peak clipping, then by flue gas flow regulation unit control enters the hot flue gas flow of heat exchange chamber, realizes the stable control to heat exchange process.

Centering apparatuses and methods for precision placement of a product or component, such as a ceramic honeycomb body, prior to a post-production processing steps are provided. In particular, after extrusion of a component or ware, the component or ware oftentimes requires one or more post-production processing steps in order to obtain a final product. The centering apparatuses and methods described herein provide for the precise and accurate centering of the product (or component) prior to performing these post-production processing steps, thereby obtaining repeatable, consistent, high-quality final products.