JP6854103B2 - Manufacturing method and manufacturing equipment for catalyst-supported filters for exhaust gas purification - Google Patents

Description

The present invention relates to a method and an apparatus for manufacturing a catalyst for purifying exhaust gas and a catalyst-supporting filter.

In recent years, exhaust gas emitted from an internal combustion engine (for example, a diesel engine of an automobile) contains harmful components (for example, NOx, particulates such as solid carbon fine particles and high molecular weight hydrocarbon fine particles). The exhaust gas purification catalyst is a catalyst for purifying exhaust gas by reducing such harmful components contained in the exhaust gas, and the catalyst-supporting filter carries the catalyst on the exhaust gas purification filter and collects it on the filter. By burning the resulting particulate in a catalytic manner, the filter can be regenerated without using a heater or the like.

The catalyst for purifying exhaust gas is produced by coating a catalyst slurry on a honeycomb-like carrier made of ceramic, metal, or the like, and the catalyst slurry (hereinafter, simply referred to as “slurry”) is a platinum group element (for example). , Palladium, platinum, rhodium) and catalytic substances such as co-catalyst components (eg, alumina, ceria, zirconia).

On the other hand, as a catalyst-supporting filter, a diesel particulate filter (DPF) in which one of a gas inflow part and a gas discharge part of a porous honeycomb is alternately sealed by adjacent cells is widely used in which a catalyst for particulate combustion is supported. Are known.

As a method for producing these exhaust gas purification catalysts and catalyst-supporting filters, for example, those disclosed in Patent Document 1 below are known. Further, in the method shown in Patent Document 2, the catalyst slurry is introduced into the carrier and recovered into the tank by changing the relative height between the carrier mounting portion and the catalyst slurry tank. Further, according to the method shown in Patent Document 3, a predetermined catalyst coat width can be obtained by pushing the catalyst slurry from below the carrier.

Japanese Unexamined Patent Publication No. 2009-189983 Japanese Unexamined Patent Publication No. 2005-2307776 Japanese Unexamined Patent Publication No. 2006-224071

However, the method shown in Patent Document 1 requires a vacuum suction device and a blow device, and particularly as a carrier, a large capacity, for example, a size of 12 inches in diameter and 12 inches in height has a volume of 22 L, and such a size. The vacuum suction device and the blow device become huge and very expensive. In addition, the noise generated during sudden decompression and pressurization becomes enormous, and the cost of countermeasures becomes enormous.

Further, in Patent Document 2 and Patent Document 3, it is a manufacturing method that does not require blowing or suction, but in the method shown in Patent Document 2, the relative heights of the carrier mounting portion and the catalyst slurry tank are changed. The catalyst slurry is introduced into the carrier and recovered into the tank. In this method, the slurry tank must be in an open system, solvent evaporation from the open portion is unavoidable, and solid content during mass production. The variation in manufacturing quality increases due to fluctuations in concentration and the like. Further, when the catalyst slurry has a high viscosity, the introduction of the catalyst slurry into the carrier becomes insufficient.

Further, according to the method shown in Patent Document 3, a predetermined catalyst coat width can be obtained by pushing the catalyst slurry from below the carrier. However, in this method, no mention is made of the transfer path of the catalyst slurry from the pushing device for pushing the catalyst slurry to the carrier. Normally, when transporting the catalyst slurry from the pushing device, a pipe serving as a transport path is required. When the catalyst slurry is supplied to the carrier through the pipe, the pressure at the pipe connection portion becomes high, and the height of the catalyst slurry supplied to the carrier becomes non-uniform. Furthermore, this tendency is also affected by the viscosity and supply rate of the catalyst slurry, and it is very difficult to stabilize the quality during mass production.

Therefore, the present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a method for manufacturing a catalyst-supported filter for exhaust gas purification at low cost and a manufacturing apparatus thereof.

In order to achieve the above object, the production method of the present invention is a method in which an opening is provided and a catalyst substance for exhaust gas purification or particulate combustion is supported in a porous carrier in the opening. A slurry supply step of supplying a slurry containing the catalyst substance in the carrier, a slurry discharge step of discharging the slurry from the carrier, a slurry pool removing step of removing the slurry pool on the lower surface of the carrier, and a slurry drying. It is a method having a step and a slurry firing step, thereby achieving the intended purpose.

Further, in order to achieve the above object, the manufacturing apparatus of the present invention is an apparatus in which a catalytic substance for exhaust gas purification or particulate combustion is supported in a porous carrier, and the catalytic substance is contained in the carrier. It is characterized by including a slurry supply device for supplying a slurry containing the slurry, a manifold portion for adjusting the supply pressure of the slurry in the carrier within a certain range, and a slurry tank for temporarily storing the slurry. In this way, the intended purpose is achieved.

According to the present invention, a high-quality exhaust gas purification catalyst and a catalyst-supporting filter can be manufactured at low cost.

A cross-sectional view schematically showing an exhaust gas purification catalyst and a catalyst-supported filter manufacturing apparatus according to the first embodiment of the present invention. The figure which shows the state which supplied the catalyst slurry prepared in advance to the slurry tank in the catalyst-supporting filter manufacturing process for exhaust gas purification in Embodiment 1 of this invention. The figure which shows the state which installed the porous carrier in the catalyst-supporting filter manufacturing process for exhaust gas purification in Embodiment 1 of this invention. The figure which shows the state which sucked the catalyst slurry supplied to the slurry tank into the slurry supply apparatus in the process of manufacturing the catalyst-supporting filter for exhaust gas purification in Embodiment 1 of this invention. The figure which shows the state which supplied the catalyst slurry sucked into the slurry supply apparatus to the manifold part in the process of manufacturing the catalyst-supporting filter for exhaust gas purification in Embodiment 1 of this invention. The figure which shows the state which supplied the catalyst slurry sucked into the slurry supply apparatus into the carrier in the process of manufacturing the catalyst-supporting filter for exhaust gas purification in Embodiment 1 of this invention. The figure which shows the state which sucked the catalyst slurry supplied to the carrier and the manifold part into the slurry supply apparatus in the process of manufacturing the catalyst-supporting filter for exhaust gas purification in Embodiment 1 of this invention. FIG. 5 is a diagram showing a state in which the dispersion plate is moved upward in the process of manufacturing a catalyst-supporting filter for exhaust gas purification according to the first embodiment of the present invention, and the slurry pool formed under the carrier is brought into contact with the dispersion plate. The figure which shows the state which moved the dispersion plate in contact with a slurry pool downward in the process of manufacturing the catalyst-supporting filter for exhaust gas purification in Embodiment 1 of this invention. The figure which shows the state which removed the catalyst-supporting filter from the carrier holding part in the process of manufacturing the catalyst-supporting filter for exhaust gas purification in Embodiment 1 of this invention The figure which shows the state which held the carrier in the carrier transport part in the process of manufacturing the catalyst-supporting filter for exhaust gas purification in Embodiment 2 of this invention, and sucked the catalyst slurry supplied to a carrier and a manifold part into a slurry supply device. The figure which shows the state which moved the carrier downward in the process of manufacturing the catalyst-supporting filter for exhaust gas purification in Embodiment 2 of this invention, and brought the slurry pool formed in the lower part of a carrier into contact with a dispersion plate. The figure which shows the state which removed the catalyst-supporting filter from the manufacturing apparatus in the catalyst-supporting filter manufacturing process for exhaust gas purification in Embodiment 2 of this invention.

The method for producing a catalyst-supporting filter for exhaust gas purification according to claim 1 of the present invention is a method in which an opening is provided and a catalyst substance for exhaust gas purification or particulate combustion is supported in a porous carrier in the opening. A slurry supply step of supplying a slurry containing the catalyst substance in the carrier, a slurry discharge step of discharging the slurry from the carrier, and a slurry pool removing step of removing the slurry pool on the lower surface of the carrier. It is characterized by having a slurry drying step and a slurry firing step.

As a result, since a vacuum suction device and a blow device are not required, the device cost can be significantly reduced.

Further, in the method for manufacturing a catalyst-supporting filter for exhaust gas purification according to claim 2, the slurry supply step is characterized in that the slurry is supplied from the opening on the lower surface to the carrier in which the opening is installed in the vertical direction. To do.

As a result, the height of the liquid level can be made uniform by using gravity, so that the height of the catalyst slurry supplied to the carrier can be made uniform.

Further, in the method for manufacturing a catalyst-supported filter for exhaust gas purification according to claim 3, in the slurry supply step, the slurry supply step adjusts the supply rate of the slurry to keep the supply pressure of the slurry within a certain range. It is characterized by keeping it inside.

Thereby, the height of the catalyst slurry supplied to the carrier can be made uniform without being affected by the volume of the carrier and the opening area of the carrier.

Further, in the method for manufacturing a catalyst-supporting filter for purifying exhaust gas according to claim 4, in the slurry supply step, the slurry supply step uses a slurry supply device for supplying the slurry, and the slurry is supplied in the carrier. It is characterized in that it is supplied into the carrier via a manifold portion for adjusting the pressure within a certain range.

As a result, the pressure concentration due to the pipe diameter and the connection position of the equipment can be relaxed, so that the height of the catalyst slurry supplied to the carrier can be made uniform. In addition, since the slurry can be supplied in a closed system, variations in production quality due to fluctuations in solid content concentration and the like can be reduced even during mass production.

Further, the method for manufacturing a catalyst-supporting filter for purifying exhaust gas according to claim 5. In the slurry supply step, the slurry discharge step causes the slurry in the carrier to flow in the opposite direction to the slurry supply step. It is characterized by being discharged to the outside of the carrier.

As a result, since a vacuum suction device and a blow device are not required, the device cost can be significantly reduced.

Further, the method for manufacturing a catalyst-supporting filter for purifying exhaust gas according to claim 6. In the slurry supply step, the slurry discharge step causes the slurry in the carrier to flow in the opposite direction to the slurry supply step. It is characterized by being discharged to the outside of the carrier.

As a result, since a vacuum suction device and a blow device are not required, the device cost can be significantly reduced.

Further, in the method for manufacturing a catalyst-supporting filter for purifying exhaust gas according to claim 7, in the slurry supply step, in the slurry accumulation removing step, the dispersion plate is brought close to the lower surface of the carrier after the slurry discharge step is completed. It is characterized in that the slurry pool is removed.

As a result, since a vacuum suction device and a blow device are not required, the device cost can be significantly reduced.

Further, the apparatus for manufacturing a catalyst-supporting filter for exhaust gas purification according to claim 8 is an apparatus having an opening and supporting a catalyst substance for exhaust gas purification or particulate combustion in a porous carrier in the opening. A slurry supply device that supplies a slurry containing the catalyst substance in the carrier, a manifold portion for adjusting the supply pressure of the slurry in the carrier within a certain range, and the slurry temporarily. It is provided with a slurry tank for accumulating.

As a result, since a vacuum suction device and a blow device are not required, the device cost can be significantly reduced.

Further, in the apparatus for manufacturing a catalyst-supporting filter for exhaust gas purification according to claim 9, the manifold portion includes a dispersion plate composed of plate-shaped parts having a large number of through holes.

As a result, the pressure concentration due to the pipe diameter and the connection position of the equipment can be relaxed, so that the height of the catalyst slurry supplied to the carrier can be made uniform.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a cross-sectional view schematically showing a manufacturing apparatus in which an exhaust gas purification catalyst is supported on a filter.

The manufacturing apparatus 3 having an opening and supporting the exhaust gas purification catalyst 2 which is a catalyst substance for exhaust gas purification and particulate combustion in the filter 1 which is a porous carrier is a slurry-like exhaust gas purification catalyst. A slurry tank 5 for storing (hereinafter, catalyst slurry 4), a slurry supply device 6 for supplying the catalyst slurry 4 into the filter 1, and a slurry supply device 6 for adjusting the supply pressure of the catalyst slurry 4 in the filter 1 within a certain range. It is provided with a manifold portion 7.

The manifold portion 7 includes a dispersion plate 8 composed of plate-shaped parts having a large number of through holes, and a carrier holding portion 9 that holds the filter 1 inside. The dispersion plate 8 is arranged on the injection port 10 side of the supplied catalyst slurry 4.

The slurry tank 5 is connected to the slurry supply device 6 at the bottom thereof via an on-off valve 11. Further, the slurry supply device 6 is connected to the manifold portion 7 via an on-off valve 12 at the bottom of each.

The slurry supply device 6 includes a drive motor 13.

The manufacturing apparatus 3 moves the catalyst slurry 4 from the slurry tank 5 to the slurry supply device 6 or from the slurry supply device 6 to the slurry tank 5 by opening the on-off valve 11 and operating the drive motor 13.

Further, by opening the on-off valve 12 and operating the drive motor 13, the catalyst slurry 4 is moved from the slurry supply device 6 to the manifold portion 7 or from the manifold portion 7 to the slurry supply device 6.

The catalyst particles in the catalyst slurry 4 are not particularly limited, and cesium (Cs), zirconium (Zr), aluminum (Al), neodium (Nd), ruthenium (Y), praseodymium (Pr), gadolinium (Gd), platinum ( Pt), palladium (Pd), iridium (Ir), ruthenium (Ru), rhodium (Rh), osmium (Os), chromium (Cr), nickel (Ni), vanadium (V), copper (Cu), etc. Rhodium can be used and two or more of them can be combined.

In addition, the catalyst particle size can be adjusted as needed. The slurry particle size is not particularly limited, but is preferably in the range of 0.5 to 10 microns.

Further, in the catalyst slurry, water or an organic solvent can be used as the solvent for dispersing the catalyst particles. The organic solvent is not particularly limited, and alcohols such as N-methyl-2-pyrrolidone (NMP), methanol, ethanol, propanol, isopropyl alcohol, butanol, and isobutyl alcohol; such as methyl ethyl ketone and methyl isobutyl ketone (MIBK). Ketones; terpenes containing α-terpineol, β-terpineol, γ-terpineol; ethylene glycol monoalkyl ethers; ethylene glycol dialkyl ethers; diethylene glycol monoalkyl ethers; diethylene glycol dialkyl ethers; ethylene glycol monoalkyl ether acetates Ethylene glycol dialkyl ether acetates; Diethylene glycol monoalkyl ether acetates; Diethylene glycol dialkyl ether acetates; Propropylene glycol monoalkyl ethers; Propropylene glycol dialkyl ethers; Mixtures consisting of at least one or two or more solvents selected from these solvents can also be used.

The ratio of the catalyst particles to the solvent is not particularly limited, and can be adjusted according to the amount of catalyst finally supported on the filter 1.

Further, if necessary, a viscosity modifier can be added to the catalyst slurry to adjust the viscosity. The viscosity modifier is not particularly limited, and is limited to polyethylene glycol, polyethylene oxide, polyvinyl alcohol, polyvinyl butyral, methacrylate polymer, acrylate polymer, acrylate-methacrylate copolymer, sodium polyacrylate. , Α-Methylstyrene polymer, butyl methacrylate resin, cellulose resin and the like can be used, and further, two or more of these may be used in combination.

In the above configuration, the manufacturing process of supporting the exhaust gas purification catalyst of the present embodiment on the filter includes a slurry supply step, a slurry discharge step, a slurry pool removal step, a slurry drying step, and a slurry firing step. Are prepared in order.

In the slurry supply step, the catalyst slurry 4 in the slurry tank 5 is transferred from the slurry supply device 6 into the filter 1 by using the drive motor 13, the manifold portion 7, the on-off valve 11, the on-off valve 12, and the pressure gauge 14. It supplies to.

In the slurry discharge step, the drive motor 13, the on-off valve 11, and the on-off valve 12 are used to discharge the excess catalyst slurry 4 in the filter 1 to the outside of the filter 1.

In the slurry pool removing step, the slurry pool 15 on the lower surface of the filter 1 is removed by using the dispersion plate 8 of the manifold portion 7.

After that, a catalyst-supporting filter for purifying exhaust gas is obtained through a slurry drying step and a slurry firing step.

In the slurry supply step, as shown in FIG. 2, first, with the on-off valve 11 and the on-off valve 12 closed, the catalyst slurry 4 in which the ratio of the catalyst particles and the solvent is adjusted in advance is supplied to the slurry tank 5.

Next, as shown in FIG. 3, the filter 1 is installed on the carrier holding portion 9 as a carrier for supporting the catalyst. As the filter 1, a diesel particulate filter (DPF) or the like in which one of the gas inflow portion and the discharge portion of a honeycomb-shaped or porous honeycomb made of ceramic or metal is alternately sealed by adjacent cells can be used. ..

Further, as shown in FIG. 4, the opening / closing valve 11 is opened and the drive motor 13 is operated to move the catalyst slurry 4 from the slurry tank 5 to the slurry supply device 6.

In the embodiment, as an example, the slurry supply device 6 describes a syringe type pump device. However, the slurry supply device 6 is not limited to this, and includes swirl pumps, turbine pumps, axial flow pumps, mixed flow pumps, cascade pumps, plunger pumps, diaphragm pumps, gear pumps, eccentric pumps, screw pumps, and the like. Various liquid feed pumps can be used.

FIG. 5 shows a step of moving the catalyst slurry 4 to the manifold portion 7.

By closing the on-off valve 11, opening the on-off valve 12, and operating the drive motor 13, the catalyst slurry 4 is moved from the slurry supply device 6 to the manifold portion 7. Further, the catalyst slurry 4 passes through the dispersion plate 8 in the process of filling the space of the manifold portion 7. As the dispersion plate 8, various resin materials such as metals such as aluminum, SUS, and duralumin, ceramics, polyethylene, polypropylene, acrylic, polyamide, polycarbonate, ethylene fluoride, and epoxy can be used. The shape of the dispersion plate 8 is not particularly limited, but it is preferable to use a dispersion plate 8 having a thickness of 1 to 5 mm. Further, as the through holes formed in the dispersion plate 8, it is preferable that the diameter is within the range of 1 to 10 mm and the inter-hole distance is within the range of 5 to 30 mm. The number of dispersion plates 8 can be increased as needed.

FIG. 6 shows a step of injecting the catalyst slurry 4 into the filter 1. The drive motor 13 is further operated from the state shown in FIG. 5, and the catalyst slurry 4 is injected into the filter 1. By installing the dispersion plate 8 inside the manifold portion 7, the catalyst slurry 4 is uniformly injected into the filter 1. Further, the pressure in the catalyst slurry 4 can be measured by the pressure gauge 14, and the operating speed of the drive motor 13 is adjusted so that the value is within a certain range (injection of liquid according to the rotation amount of the drive motor 13). The amount is fixed, and the pressure of the injection is adjusted according to the operating speed). By adjusting the injection rate (supply rate) while measuring the pressure, it is possible to manufacture a high-quality exhaust gas purification catalyst or catalyst-supporting filter regardless of the quality variation of the catalyst slurry.

In the slurry discharge step, as shown in FIG. 7, the surplus liquid of the catalyst slurry 4 (hereinafter, surplus slurry 16) is discharged to the outside of the filter 1. By operating the drive motor 13 in the reverse direction from the state of FIG. 6 in the slurry supply step, the excess liquid of the catalyst slurry 4 injected into the filter 1 is discharged to the outside of the filter 1. At this time, a small amount of the catalyst slurry 4 remains on the lower surface of the filter 1, and the slurry reservoir 15 is formed.

Next, in the slurry pool removing step, as shown in FIG. 8, the slurry pool 15 is moved to the dispersion plate 8. The dispersion plate 8 is raised in the direction of the filter 1 and brought close to the lower surface of the filter 1. By contacting the dispersion plate 8 with the slurry reservoir 15, the surplus slurry 16 can be moved from the slurry reservoir 15 to the dispersion plate 8.

In FIG. 9, the slurry pool 15 can remove the excess slurry 16 on the lower surface of the filter 1 from the filter 1 by lowering the dispersion plate 8 from the state of FIG. By removing the excess slurry 16 remaining on the lower surface of the filter 1, it is possible to prevent the filter 1 from being clogged by the catalyst particles.

In FIG. 10, the catalyst slurry 4 is returned to the slurry tank 5 by operating the drive motor 13 with the on-off valve 11 opened and the on-off valve 12 closed. Further, the filter 1 from which the surplus slurry 16 is discharged is removed from the carrier holding portion 9.

In the drying step, the catalyst slurry is dried. The drying method is not particularly limited, but a hot air drying method, a microwave drying method, an infrared drying method, a vacuum drying method and the like can be used. The carrier temperature during drying is preferably about 100 to 300 ° C. Then, in the firing step, firing is preferably performed by heating to 500 to 800 ° C.

By using the manufacturing method shown in this configuration as described above, a high-quality exhaust gas purification catalyst and a catalyst-supporting filter can be manufactured at low cost.
(Embodiment 2)
In the present embodiment, the steps shown in FIGS. 11 to 13 are performed following the steps shown in FIGS. 1 to 6 in the first embodiment.

Instead of the step of sucking the catalyst slurry 4 supplied to the filter 1 and the manifold portion 7 shown in FIG. 7 of the first embodiment into the slurry supply device 6, the filter 1 is moved by the carrier transport portion 17 as shown in FIG. The filter 1 is separated from the carrier holding portion 9 for holding, and the catalyst slurry 4 supplied to the manifold portion 7 is sucked into the slurry supply device 6.

The carrier transport section 17 includes a carrier holding section 18 and is connected to a vertically and horizontally movable mechanism equipped with a drive motor. By holding the upper part of the filter 1 by the carrier holding portion 18 and driving the driving motor, it is possible to carry the filter 1 in the vertical and horizontal directions.

In the slurry pool removing step of the second embodiment, as shown in FIG. 12, the filter 1 is moved downward to bring the slurry pool 15 formed under the filter 1 into contact with the dispersion plate 8. While the filter 1 is held by the carrier transport unit 17, the filter 1 is lowered so that the dispersion plate 8 and the lower surface of the filter 1 are brought close to each other. By bringing the dispersion plate 8 into contact with the slurry sump 15, the surplus slurry 16 is moved to the dispersion plate 8 side.

FIG. 13 is a diagram showing a state in which the catalyst-supporting filter is removed from the manufacturing apparatus in the process of manufacturing the exhaust gas purification catalyst and the catalyst-supporting filter according to the second embodiment of the present invention. By raising the filter 1 from the state where the dispersion plate 8 of FIG. 12 and the slurry sump 15 are in contact with each other, the surplus slurry 16 is removed from the slurry sump 15 on the lower surface of the filter 1. By removing the excess slurry 16 formed on the lower surface of the filter 1, it is possible to prevent the filter 1 from being clogged by the catalyst particles.

After that, the drying step and the firing step are performed in the same manner as in the first embodiment.

By using the manufacturing method shown in this configuration as described above, a high-quality exhaust gas purification catalyst and a catalyst-supporting filter can be manufactured at low cost.

The exhaust gas purification catalyst and catalyst-supporting filter of one aspect of the present invention include harmful components (for example, NOx, solid carbon fine particles, high molecular weight hydrocarbon fine particles, etc.) emitted from an internal combustion engine (for example, a diesel engine of an automobile). It can purify (catalyst) and can be applied not only to automobiles but also to exhaust gas purification of construction machinery, generators, forklifts, cultivators, ships, etc.

1 Filter 2 Exhaust gas purification catalyst 3 Manufacturing equipment 4 Catalyst slurry 5 Slurry tank 6 Slurry supply equipment 7 Manifold part 8 Dispersion plate 9 Carrier holding part 10 Injection port 11 Open / close valve 12 Open / close valve 13 Drive motor 14 Pressure gauge 15 Slurry pool 16 Surplus Slurry 17 Carrier carrier 18 Carrier holder

Claims (7)

A method in which a catalytic substance for exhaust gas purification or particulate combustion is supported in a porous carrier having an opening, and a slurry for supplying a slurry containing the catalytic substance in the carrier is supplied. a supply step, possess a slurry discharging step of discharging the slurry from said carrier, and the slurry reservoir removal step for removing the reservoir slurry of the carrier underside, a slurry drying step, the slurry sintering step,
The slurry supply step is an exhaust gas that is supplied into the carrier via a dispersion plate installed in a manifold portion for adjusting the supply pressure of the slurry in the carrier to a certain range. A method for manufacturing a catalyst-supported filter for purification. A method in which a catalytic substance for exhaust gas purification or particulate combustion is supported in a porous carrier having an opening, and a slurry for supplying a slurry containing the catalytic substance in the carrier is supplied. a supply step, possess a slurry discharging step of discharging the slurry from said carrier, and the slurry reservoir removal step for removing the reservoir slurry of the carrier underside, a slurry drying step, the slurry sintering step,
In the slurry pool removing step, after the slurry discharge step is completed, a dispersion plate installed in a manifold portion for adjusting the supply pressure of the slurry in the carrier within a certain range is brought close to the lower surface of the carrier. , A method for manufacturing a catalyst-supported filter for exhaust gas purification , which comprises removing the slurry pool. The method for manufacturing a catalyst-supporting filter for exhaust gas purification according to claim 1 or 2 , wherein the slurry supply step supplies the slurry from an opening on the lower surface to the carrier having the openings installed in the vertical direction. .. The exhaust gas purification step according to any one of claims 1 to 3, wherein the slurry supply step keeps the supply pressure of the slurry within a certain range by adjusting the supply rate of the slurry. A method for manufacturing a catalyst-supported filter. In the slurry supply step, a slurry supply device for supplying the slurry is used, and the slurry is supplied into the carrier via a manifold portion for adjusting the supply pressure of the slurry within a certain range. The method for producing a catalyst-supported filter for exhaust gas purification according to any one of claims 1 to 4, wherein the filter is supported by a catalyst for exhaust gas purification. The slurry discharging step includes the slurry supply step and the slurry that is flowing in the reverse direction, the one of 請Motomeko 1-5, characterized by discharging the slurry in the carrier to the carrier outside The method for manufacturing a catalyst-supported filter for purifying exhaust gas according to the above method. A slurry having an opening and carrying a catalyst substance for exhaust gas purification or particulate combustion in a porous carrier in the opening, and supplying a slurry containing the catalyst substance in the carrier. A supply device, a manifold portion for adjusting the supply pressure of the slurry in the carrier to a certain range, and a slurry tank for temporarily storing the slurry are provided .
The manifold portion is an apparatus for manufacturing a catalyst-supporting filter for exhaust gas purification, which comprises a dispersion plate composed of plate-shaped parts having a large number of through holes.

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