CN114682605A - Method and device for separating metal base material and solid catalyst of plate-shaped catalyst element - Google Patents
Method and device for separating metal base material and solid catalyst of plate-shaped catalyst element Download PDFInfo
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- CN114682605A CN114682605A CN202110723165.1A CN202110723165A CN114682605A CN 114682605 A CN114682605 A CN 114682605A CN 202110723165 A CN202110723165 A CN 202110723165A CN 114682605 A CN114682605 A CN 114682605A
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- 239000003054 catalyst Substances 0.000 title claims abstract description 350
- 239000002184 metal Substances 0.000 title claims abstract description 113
- 239000000463 material Substances 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000011949 solid catalyst Substances 0.000 title abstract description 9
- 239000007787 solid Substances 0.000 claims abstract description 77
- 230000003197 catalytic effect Effects 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 239000011343 solid material Substances 0.000 claims description 18
- 238000010306 acid treatment Methods 0.000 claims description 17
- 238000000926 separation method Methods 0.000 claims description 17
- 238000005406 washing Methods 0.000 claims description 16
- 239000000758 substrate Substances 0.000 claims description 13
- 238000012545 processing Methods 0.000 claims description 7
- 238000007664 blowing Methods 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 14
- 238000011084 recovery Methods 0.000 description 13
- 238000012360 testing method Methods 0.000 description 10
- 239000002002 slurry Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000011144 upstream manufacturing Methods 0.000 description 5
- 239000002699 waste material Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 208000028659 discharge Diseases 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
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- 230000001070 adhesive effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052809 inorganic oxide Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
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- 229910001220 stainless steel Inorganic materials 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
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- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Press Drives And Press Lines (AREA)
Abstract
The invention provides a method and a device for separating a metal base material and a solid catalyst of a plate-shaped catalyst element, wherein the solid catalyst is easy to take out from a used plate-shaped catalyst element and the post-treatment is simple. When separating a metal base material from a plate-shaped catalyst element (12A) in which a catalyst solid having catalytic activity is uniformly supported between meshes and on the surface of a mesh-shaped metal base material, the used plate-shaped catalyst element (12A) is passed through a first roll section (15A) having a plurality of pairs of gear rolls (14, 14) and plastically deformed in different shapes at the respective stages of the gear rolls, and then the catalyst solid is separated from the metal base material.
Description
Technical Field
The present invention relates to a method and an apparatus for separating a metal base material and a catalyst solid material of a plate-shaped catalyst element.
Background
Conventionally, in a coal-fired power plant, for example, a denitration device for removing nitrogen oxides in exhaust gas is used to clean the exhaust gas discharged. After the exhaust gas treatment is performed for a long time, the used plate-shaped catalyst element is collected by a waste disposer and is directly disposed of as waste.
Further, a technique of recovering a catalyst from a used plate-shaped catalyst element has been proposed in which the used plate-shaped catalyst element is used in a denitration device, because the catalyst is supported on a metallic mesh-shaped substrate (see, for example, patent document 1).
Prior art documents
Patent document
Patent document 1: japanese patent laid-open publication No. 2004-290970
Disclosure of Invention
Problems to be solved by the invention
However, in the recovery method of patent document 1, it is proposed to first cover the surface of the catalyst layer with the overcoat layer and to peel off the catalyst layer by expanding and contracting the overcoat layer, but there is a problem that the overcoat layer covering treatment is required and the subsequent expanding and contracting treatment takes much time.
Further, the used catalyst can be removed by spraying water onto the used plate-shaped catalyst element, but there is a problem that a large amount of water is required for completely removing the used catalyst in the spray water washing, and a large amount of cost is required for the water discharge treatment, and the water discharge treatment is inefficient.
In view of the above circumstances, an object of the present invention is to provide a method and an apparatus for separating a metal base material and a solid catalyst material of a plate-shaped catalyst element, which are easy to take out the solid catalyst material from a used plate-shaped catalyst element and which are easy to post-treat.
Means for solving the problems
A method for separating a metal base material and a catalyst solid from each other in a plate-shaped catalyst element according to a first aspect of the present invention is a method for separating a metal base material and a catalyst solid from each other in a plate-shaped catalyst element in which a catalyst solid having a catalytic activity is uniformly supported between meshes and on a surface of a mesh-shaped metal base material, wherein the plate-shaped catalyst element is passed through a roller section having a plurality of stages of paired gear rollers and is plastically deformed at each stage of the gear rollers, and thereafter the catalyst solid is separated from the metal base material.
A second aspect of the present invention is a separator for separating a metal base material and a catalyst solid from each other in a plate-shaped catalyst element, the separator being formed by uniformly supporting a catalyst solid having catalytic activity between meshes of a mesh-shaped metal base material and on a surface of the mesh-shaped metal base material, the separator including: a roller portion having a plurality of stages of paired gear rollers and performing plastic deformation having different deformation shapes at the respective stages of the gear rollers; and a catalyst detachment section that detaches the catalyst solid after plastic deformation.
Effects of the invention
According to the present invention, in a method for separating a metal base material from a catalyst solid material in which the catalyst solid material having catalytic activity is uniformly supported between meshes and on a surface of a mesh-like metal base material, the plate-like catalyst element is passed through a roll portion having a plurality of stages of paired gear rolls and is plastically deformed at each stage of the gear rolls, whereby the catalyst solid material can be separated from the metal base material thereafter, and a treated element after the catalyst solid material is separated can be recovered as a valuable object.
Drawings
Fig. 1 is a schematic diagram showing the structure of a device for separating a metal base material and a catalyst solid material of a plate-shaped catalyst element according to embodiment 1.
Fig. 2 is a schematic diagram showing the structure of a device for separating a metal base material and a catalyst solid in a plate-shaped catalyst element according to embodiment 2.
Fig. 3 is a schematic diagram showing the structure of a device for separating a metal base material and a catalyst solid in a plate-shaped catalyst element according to embodiment 3.
Fig. 4 is an explanatory diagram for explaining the operation of the pressing roller.
Fig. 5 is a schematic view showing another example of the pressing roller.
Fig. 6 is a schematic diagram showing the structure of a device for separating a metal base material and a catalyst solid in a plate-shaped catalyst element according to embodiment 4.
Fig. 7 is a diagram showing an example of the expanded metal.
Fig. 8 is a diagram showing an example of the gear roller.
Description of reference numerals:
10A to 10d. a device for separating a metal base material and a catalyst solid of a plate-shaped catalyst element;
removing the catalyst;
a used plate-shaped catalyst element;
a treated component;
a conveyor belt;
a geared roller;
15a.
15b.. a second roller portion;
a first blast of air;
a second blast of air;
compressing air;
a catalyst recovery section;
spray water washing;
a water washing section;
a catalyst slurry;
a slurry recovery section;
pressing the roller;
a turntable;
a catalyst recovery vessel;
a catalyst block;
a catalyst unit;
53.. a laminate;
a worker.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The present invention is not limited to the embodiments, and various modifications, additions, and omissions may be made by those skilled in the art without departing from the spirit and scope of the present invention.
[ embodiment 1]
Fig. 1 is a schematic diagram showing the structure of a device for separating a metal base material and a catalyst solid material of a plate-shaped catalyst element according to embodiment 1. As shown in fig. 1, the apparatus 10A for separating a metal base material from a catalyst solid in a plate-shaped catalyst element is a separator for separating a metal base material from a catalyst solid in a used plate-shaped catalyst element 12A in which a catalyst solid having catalytic activity is uniformly supported between meshes and on a surface of a mesh-shaped metal base material, and includes: a first roller portion 15A having a plurality of stages of paired gear rollers 14, 14 and plastically deforming the gear rollers in different deformation shapes at the respective stages; and a catalyst detachment section including first air blows 16A blowing compressed air 16A to detach the catalyst solid after plastic deformation. In the present embodiment, a catalyst recovery unit 17 that recovers the removed removal catalyst 11 is provided on the lower stage side of the first blowing 16A. The used plate-shaped catalyst element 12 is a plate-shaped catalyst element in which a catalyst solid having catalytic activity is uniformly supported between meshes and on the surface of a mesh-shaped metal base material, and is a plate-shaped catalyst element in which a catalyst treatment for a certain period of time has been completed.
Here, in the present embodiment, the first air blow 16A is used as a catalyst detachment portion. Here, instead of the first air blow 16A, a wire brush may be used to remove the stripped or detached catalyst by brushing.
In addition, the first air blow 16A and the wire brush may be used in combination.
The conveyor belt 13 is an endless belt and is wound around at least four rollers 13a to 13d, and the rollers are rotated by a drive source not shown, so that the used plate-shaped catalyst elements 12A are conveyed from the upstream side to the downstream side, and the used plate-shaped catalyst elements 12A are repeatedly conveyed.
The removal catalyst 11 recovered by the catalyst recovery unit 17 is recovered by a catalyst recovery container (for example, a flexible container) 31 and is disposed of as industrial waste by a waste disposal person. In addition, when the reusable catalyst is included, the catalyst may be regenerated separately by the catalyst generation processing device to recycle the catalyst.
According to the present embodiment, since the first roller portion 15A that plastically deforms the transported used plate-shaped catalyst elements 12A and the first air blow 16A that serves as the catalyst removing portion that removes the catalyst solid matter that has been peeled or removed when the used plate-shaped catalyst elements 12A are plastically deformed are provided, the adhesion between the metal base material and the catalyst solid matter containing porous inorganic oxide as a main component is peeled off by plastically deforming the metal base material by the action of the roller deformation, and the used plate-shaped catalyst elements 12A are plastically deformed by crushing a part of the catalyst solid matter under the pressure of the roller, whereby the used plate-shaped catalyst elements 12A can be easily peeled or removed from the element main body. The removal catalyst 11 can be dropped and recovered to the catalyst recovery unit 17 by the injection of the compressed air by the first air blow 16A.
In addition, when the catalyst is recovered by the catalyst recovery unit 17, a vacuum suction device or the like may be provided to forcibly drop and then recover the removed catalyst 11.
The treated element 12B after the catalyst is peeled off or detached is a metal (SUS or the like), and thus can be separately recovered as a metal valuable substance.
That is, since the plate-shaped catalyst element is, for example, a member in which a denitration catalyst is attached to a mesh-shaped metal grid plate (for example, expanded metal made of metal having a thickness of 0.3 to 1.5 mm), the used plate-shaped catalyst element 12A is plastically deformed by the first roller portion 15A, and the catalyst as a solid is peeled and detached from the mesh-shaped metal grid plate.
Fig. 7 is a diagram showing an example of the expanded metal. As shown in fig. 7, the expanded metal is defined by a longitudinal mesh Size (SW), a transverse mesh size (LW), a mesh width (W), and a mesh thickness (T), and for example, expanded metal having a longitudinal mesh size (SW ═ 2.0mm), a transverse mesh size (LW ═ 4.5mm), a mesh width (W ═ 0.165mm), and a mesh thickness (T ═ 0.47mm) is used, but the present invention is not limited thereto.
Fig. 8 is a diagram showing an example of the gear roller. As shown in fig. 8, the gears of the gear roll 14 are defined by a reference diameter (d), a number of teeth (z), a pitch (circumference/number of teeth; P ═ pi d/z), and a tooth thickness (center; s), and for example, a gear roll having a reference diameter (d ═ 41mm), a number of teeth (32), a pitch (4mm), and a tooth thickness (s ═ 2mm) is used, but the present invention is not limited thereto.
In the first roller portion 15A, the shape of the gear roller of each stage is different from the gear rollers of the other stages arranged in the traveling direction. Here, the different shapes mean that at least one of the tooth height, tooth thickness, pitch, tooth number, tooth profile, and gear type of the gear roller is different. Here, the tooth heights are preferably different within a range of 3mm to 6 mm. The tooth thickness is preferably different within a range of 1mm or more and 5mm or less. The pitch preferably varies within a range of 2mm or more and 6mm or less. The number of teeth preferably differs within more than one range. The combination of the parameters may be set to match the mesh size of the target metal base material, and it is particularly important to set the mesh of the gear and the metal base material to be in contact with each other without omission.
The first roller portion 15A is constituted by a combination of gear rollers of different shapes. Thereby, the first roller portion 15A plastically deforms the used plate-shaped catalyst element 12A in different deformation shapes at each stage of the gear roller. In the case where a plurality of gear rolls having the same tooth profile are provided, the catalyst element deformed at the gear roll of the first stage follows only the shape formed at the gear roll of the first stage after the gear roll of the second stage, and therefore, it is difficult to apply a deformation stress to the metal base material. Therefore, although the catalyst solid can be partially detached from the metal base material, it is difficult to remove all the catalyst solid from the catalyst element. On the other hand, in the first roller portion 15A of the present embodiment, the gear roller is formed of a plurality of stages of rollers having different sizes such as tooth height, tooth thickness, and pitch, and the deformation amount and the deformation shape of the metal base material are changed for each stage, so that the deformation stress can be applied to the bonded portion between the metal base material and the catalyst solid without fail, and therefore, the bonding between the metal base material and the catalyst solid can be efficiently peeled off. Thus, substantially all of the catalyst solid can be detached by only the first roller portion 15A. In addition, in the used catalyst used for exhaust gas treatment for a long period of time, the catalyst solid may be firmly fixed to the surface of the metal base material, but even in such a case, the deformation stress applied by the gear roll is sufficiently larger than the adhesive force between the catalyst solid and the surface of the metal base material, and therefore the catalyst solid and the metal base material can be efficiently separated. In order to obtain the above-described effects, the first rotor portion 15A is preferably configured by a combination of gear rollers having different shapes, but may be configured by gear rollers having the same shape. The first roller portion 15A allows the plate-shaped catalyst elements to be appropriately processed by bringing the gear rollers of each stage into contact with different positions of the plate-shaped catalyst elements 12 and plastically deforming the different positions of the plate-shaped catalyst elements 12, that is, not plastically deforming the same positions. In addition, since the lower gear easily enters the concave portion formed in the plate-shaped catalyst element when the gears have the same shape, it is preferable to change the shape of the gear as described above, but it is possible to plastically deform a different position by controlling the rotational position or the like.
Further, by recycling the removal catalyst 11, the waste removal catalyst can be recovered as a valuable substance.
Here, the pair of gear rolls 14 and 14 are rotated in opposite directions to each other, and the used plate-shaped catalyst element 12A is passed between the two gear rolls 14 and 14 facing each other, and the used plate-shaped catalyst element 12A is reliably sandwiched by the roll corrugated protrusions and plastically deformed, whereby the adhered used catalyst can be peeled off or separated.
As the gear roll 14, a so-called corrugating roll having a plurality of radial teeth formed in a star shape, such as corrugated paper, can be used, but is not particularly limited.
Further, by adjusting the gap when the used plate-shaped catalyst elements 12A are sandwiched by the pair of gear rolls 14, the degree of compression of the used plate-shaped catalyst elements 12A can be changed.
In the present embodiment, four rows of the paired gear rolls 14, 14 are arranged from the upstream side to the downstream side, and the used plate-shaped catalyst element 12A is passed between the gear rolls 14, 14. Further, the removal efficiency of the catalyst 11 is improved by plastically deforming the used plate-shaped catalyst element 12A from the up-down direction a plurality of times.
The paired gear rolls 14, 14 are provided with two or more stages and are subjected to repeated plastic deformation to improve the peeling effect of the used catalyst. Preferably, by providing three or more stages of the paired gear rolls 14, the catalyst removal rate can be improved. In the test examples described later, although the types, the years of use, and the like of the used catalysts are different, the catalyst removal rate of 98% or more is achieved by setting the paired gear rolls 14, 14 to five stages or more.
When a plurality of stages of gear rolls are provided, the height of the teeth of the gear rolls may be changed as the upstream side goes to the downstream side to promote the peeling or separation effect.
Further, when passing through the first roller section 15A, a plurality of used plate-shaped catalyst elements 12A may be stacked and passed between the pair of gear rollers 14 and 14 to improve contact efficiency and thus improve catalyst separation effect.
Before passing through the first roller section 15A or while passing through the first roller section 15A, an acid treatment section may be provided for subjecting the used plate-shaped catalyst elements 12A to an acid treatment with an acid treatment liquid.
In the acid treatment by the acid treatment portion, an acid treatment device filled with an acid treatment liquid (e.g., hydrochloric acid) is provided before the deformation treatment by the first roller portion 15A, and the treatment is performed continuously or in batch by the acid treatment device. By immersing the catalyst in the acid treatment solution during the acid treatment, the catalyst adhering to the used plate-shaped catalyst element can be promoted to be detached.
Further, an acid-resistant roller portion may be used as the first roller portion 15A, and the acid treatment and the plastic deformation treatment may be performed simultaneously by setting the roller portion in an acid treatment facility. In this case, since the first roller portion 15A is provided in the acid treatment facility, the installation space of the acid treatment tank can be made compact as compared with the pretreatment.
An example of processing the used plate-shaped catalyst elements 12A using the solid-matter removing device will be described. As shown in fig. 1, before separating the catalyst from the used element as a metal substrate from the used plate-shaped catalyst element 12A, the catalyst block 51 is taken out from the inside of the exhaust gas denitration device not shown, and the catalyst unit 52 taken out is disassembled. The used plate-shaped catalyst elements 12A housed in the disassembled catalyst unit 52 are taken out, and a stacked body 53 composed of one sheet is formed. The worker 54 manually takes out the used plate-shaped catalyst elements 12A one by one from the stacked body 53 and places them on the conveyor belt 13.
When the used plate-shaped catalyst element 12A is passed between the pair of gear rolls 14, cracks or fissures are generated on the surface of the used plate-shaped catalyst element 12A, and the catalyst is peeled or separated from the used plate-shaped catalyst element 12A. The removed catalyst 11, which is a solid material after being peeled or separated, falls, is recovered by a catalyst recovery unit 17 provided at a lower stage, and is stored in a catalyst recovery container (for example, a flexible container or the like) 31 to be discarded or recycled. Further, since the treated element 12B from which the removal catalyst 11 has been removed is made of metal (stainless steel (e.g., SUS304, SUS316), etc.), it is recovered as a valuable metal and separately recovered as a valuable metal.
Further, the processed elements 12B after a series of processes are post-processed by a press or the like, so that the volume of the processed elements 12B can be reduced. That is, since the used plate-shaped catalyst elements 12A are treated by the gear rolls 14, the used plate-shaped catalyst elements 12A are in a corrugated state. Therefore, the corrugated processed element 12B is subjected to post-press processing by the press machine to reduce the volume, thereby suppressing an excessive volume of the disposal object. This can reduce the transportation cost for discharging the processed component 12B.
Compared with the prior art of removing the used catalyst by spraying water to the used plate-shaped catalyst element, the energy saving of spraying water washing can be realized, and the reduction of the drainage treatment amount and the reduction of the drainage treatment cost can be realized.
The results of removing the catalyst in the apparatus of the present embodiment are shown in table 1 below.
Test example 1 shows the catalyst removal rate (%) of a used plate-shaped catalyst element using the catalyst type a for 11000 hours.
Test example 2 is the catalyst removal rate (%) of the used plate-shaped catalyst element using the catalyst type a and used for 32000 hours.
Test example 3 is the catalyst removal rate (%) of the used plate-shaped catalyst element using the catalyst type a and 15000 hours.
Test example 4 is the catalyst removal rate (%) of a used plate-shaped catalyst element using the catalyst type B for 7000 hours.
Test example 5 shows the catalyst removal rate (%) of a used plate-shaped catalyst element of 15 years using the catalyst type C.
In the present test example, the treatment was performed by the first roller portion 15A provided with five pairs of gear rollers 14 and 14. The test results are shown in "table 1" below.
[ Table 1]
(Table 1)
| Test No. | Kind of catalyst | Exposure time/year | Catalyst removal rate (%) |
| 1 | A | 11,000hr | 99.3 |
| 2 | A | 32,000hr | 97.7 |
| 3 | A | 15,000hr | 99.2 |
| 4 | B | 7,000hr | 99.6 |
| 5 | C | 15 years old | 98.2 |
As shown in Table 1, in test examples 1 to 5, a high removal rate of 97% was achieved.
In the method for separating a metal base material from a catalyst solid of a plate-shaped catalyst element according to the present embodiment, the plate-shaped catalyst element in which a catalyst solid having a catalytic activity is uniformly supported between meshes and on a surface of a mesh-shaped metal base material is separated from the catalyst solid by passing the plate-shaped catalyst element through a roll portion having a plurality of stages of paired gear rolls and plastically deforming the plate-shaped catalyst element at each stage of the gear rolls, and then separating the catalyst solid from the metal base material.
According to the present embodiment, the plate-shaped catalyst elements 12A that have been used can be extended flat by performing preliminary pressing prior to the processing performed by the gear rollers 14, 14. The prior pressing will be described later. Further, cracks or fissures are generated on the surface of the used plate-shaped catalyst element 12A, and peeling or detachment of the catalyst by the gear rolls 14 and 14 of the first roll portion 15A provided on the downstream side of the pressing rolls 23 and 23 can be promoted. In particular, in the case where the metal base material is an expanded metal, since the expanded metal is pushed and extended by the pressing roller and is stretched in the direction SW in the mesh size, the catalyst solid fixed to the surface of the metal base material is peeled off, and the catalyst solid can be easily peeled and removed from the entire metal base material.
[ embodiment 2]
Fig. 2 is a schematic diagram showing the structure of a device for separating a metal base material and a catalyst solid in a plate-shaped catalyst element according to embodiment 2. In embodiment 2, a new configuration will be added to the apparatus 10A for separating a metal base material from a solid catalyst material of a plate-shaped catalyst element shown in embodiment 1. The same components as those in embodiment 1 will not be described. The apparatus 10B for separating a metal base material and a catalyst solid material of a plate-shaped catalyst element according to embodiment 2 is the apparatus 10A for separating a metal base material and a catalyst solid material of a plate-shaped catalyst element according to embodiment 1, and includes: a water washing section 19 provided on the downstream side of the first air blow 16A and removing the stripped or detached removal catalyst 11 by the jet water washing 18; and a slurry recovery unit 21 for recovering the catalyst slurry 20 removed by the water washing.
According to the present embodiment, the present invention includes: a first roller portion 15A that plastically deforms the transported used plate-shaped catalyst element 12A; a first air blow 16A for blowing compressed air 16A to remove the catalyst peeled off after plastic deformation; a water washing section 19 provided downstream of the first air blow 16A and removing the pulverized material including the peeled catalyst by jet washing 18; and a slurry recovery unit 21 for recovering the catalyst slurry 20 removed by the water washing. As a result, the used plate-shaped catalyst elements 12A are plastically deformed to easily peel off the used catalyst from the element body, and then the catalyst peeled-off object is forcibly washed by the jet water washing 18, whereby the removed catalyst 11 remaining in the metal element body after the catalyst peeling can be recovered as the catalyst slurry 20 by washing.
As shown in fig. 2, second air blow 16B for injecting compressed air 16a may be provided on the downstream side of the water washing unit 19. By providing the second air blow 16B, the adhering water adhering to the used plate-shaped catalytic elements 12A can be forcibly removed by the compressed air. As a result, the worker who handles the treated element 12B after the catalyst removal can reduce the adhesion of the powder to gloves and work clothes.
[ embodiment 3]
Fig. 3 is a schematic diagram showing the structure of a device for separating a metal base material and a catalyst solid in a plate-shaped catalyst element according to embodiment 3. In embodiment 3, a new configuration will be added to the apparatus 10A for separating a metal base material from a solid catalyst material of a plate-shaped catalyst element shown in embodiment 1 shown in fig. 1. The same components as those in embodiment 1 will not be described. It is also possible to combine the embodiment 2 described above. The apparatus 10C for separating a metal base material from a catalyst solid material for a plate-shaped catalyst element according to embodiment 3 is the apparatus 10A for separating a metal base material from a catalyst solid material for a plate-shaped catalyst element according to embodiment 1, in which a front-stage pressing portion of a pair of pressing rollers 23, 23 is provided on the upstream side of the first roller portion 15A. The surfaces of the pressing rollers 23, 23 are flat, and the used plate-shaped catalyst elements 12A are extended flat.
Fig. 4 is an explanatory diagram for explaining the operation of the pressing roller. The pressing rollers 23, 23 are disposed upstream of the first roller portion 15A in the conveying direction of the plate-shaped catalyst element. The pressing rollers 23, 23 perform a preliminary pressing. The pressing roller 23 faces the pressing roller 23. In the separating device, the plate-shaped catalyst element 12 passes between the two pressing rollers 23, whereby the plate-shaped catalyst element 12 is pressed by the pressing rollers 23 to extend flat. Here, as shown in fig. 4, the plate-shaped catalyst element 12 is formed with irregularities that are continuous in one direction of the plate surface. The portion protruding from the plane in one direction is a ridge line 12Aa, and the portion protruding in the other direction is a valley bottom line 12 Ab. The ridge line 12Aa and the valley bottom line 12Ab extend in the same direction on the plate-shaped surface of the plate-shaped catalyst element 12. The ridge line 12Aa and the valley bottom line 12Ab are formed in plural at predetermined intervals in a direction orthogonal to the extending direction. That is, the plate-shaped catalyst elements 12 have a shape in which the same cross-sectional shape is continuous in one direction. The cross-sectional shape of the plate-shaped catalyst is not limited to this. The plate-shaped catalyst may have a cross-sectional shape that is a wave shape (sinusoidal curve) and a position in a direction perpendicular to the wave shape does not change. The separating device has the insertion direction 40 of the plate-shaped catalyst elements 12 set to the same direction as the direction in which the ridge line 12Aa and the valley bottom line 12Ab extend. That is, the separating device inserts the plate-shaped catalyst element 12A into the pressing rollers 23, 23 in such a manner that the direction in which the plate-shaped catalyst element 12A widens due to extension is the direction of the axial direction of the pressing roller 23. As a result, when the plate-shaped catalyst element 12 is extended by the pressing rollers 23, a load can be appropriately applied to each part of the plate-shaped catalyst element 12, and the plate-shaped catalyst element 12 can be made flatter. Specifically, when the plate-shaped catalyst elements 12 are inserted into the pressing rollers 23, 23 in such an orientation that the axis of the pressing roller 23 is parallel to the ridge line 12Aa and the valley bottom line 12Ab, the change in the position of the plate-shaped catalyst elements 12 in the plate thickness direction at the portion pressed by the pressing rollers 23, 23 is small, and the plate-shaped catalyst elements 12 are less likely to be stretched by the pressing rollers 23, 23. In the state where the ridge line 12Aa is pressed and the valley bottom line 12Ab is pressed, the orientation of the plate-shaped catalyst element at the non-pressed position is easily changed, and the positions of the front and rear end portions of the plate-shaped catalyst element 12 in the insertion direction 40 are easily varied in the plate thickness direction. On the other hand, by inserting the catalyst plate in the direction of the present embodiment, the posture in the insertion direction 40 can be stabilized, and the irregularities of the plate-shaped catalyst can be appropriately extended. Further, by appropriately extending the irregularities of the plate-shaped catalyst, it is possible to bring the catalyst component into a state of falling off from the plate-shaped catalyst or a state of easily falling off from the plate-shaped catalyst.
According to the present embodiment, the plate-shaped catalyst elements 12A that have been used can be extended flat by performing preliminary pressing prior to the processing performed by the gear rollers 14, 14. Further, cracks or fissures are generated on the surface of the used plate-shaped catalyst element 12A, and peeling or detachment of the catalyst by the gear rolls 14 and 14 of the first roll portion 15A provided on the downstream side of the pressing rolls 23 and 23 can be promoted.
Further, the separating device is preferably provided with a guide portion that regulates the position of the plate-shaped catalyst element 12 in the plate thickness direction between the pressing rollers 23, 23 and the gear rollers 14, 14. The guide portion is exemplified by a roller or the like. By providing the guide portion, the plate-shaped catalyst elements 12 that have passed through the pressing rollers 23, 23 can be inserted into the gear rollers 14, 14 more reliably.
Fig. 5 is a schematic view showing another example of the pressing roller. In the pressing roller 123 shown in fig. 5, the flexible portions 140 and the rigid portions 142 are alternately arranged in the axial direction. The rigid body portion 142 is disposed at a position where the ridge line 12Aa and the valley bottom line 12Ab of the plate-shaped catalytic element 12 pass. The flexible portion 140 may be flexible, but is a material generally used for the pressing roller 123. The rigid portion 142 is formed of a material having higher rigidity than the flexible portion 140. The rigid portion 142 may be subjected to a surface treatment to increase the rigidity thereof to be higher than that of the flexible portion 140. By disposing the rigid body portion 142 at the position where the ridge line 12Aa and the valley bottom line 12Ab of the pressing roller 123 pass in this manner, the ridge line 12Aa and the valley bottom line 12Ab of the plate-shaped catalyst elements 12 can be further appropriately pressed, and the plate-shaped catalyst elements 12 can be further appropriately extended.
In the present embodiment, a pair of press rolls is used as the preliminary press, but the present invention is not limited to this, and the preliminary press by a press machine such as a flat bed press may be performed before the used plate-shaped catalyst elements 12A are placed on the conveyor belt 13.
The used plate-shaped catalyst elements 12A may be pretreated with compressed air or jet water in combination with or separately from the prior pressing, and the removal catalyst may be peeled off or detached in advance before the treatment by the gear rolls 14, 14. This also improves the removal rate of the removal catalyst 11 from the used plate-shaped catalyst element 12A.
[ embodiment 4]
Fig. 6 is a schematic diagram showing the structure of a device for separating a metal base material and a catalyst solid in a plate-shaped catalyst element according to embodiment 4. In embodiment 3, a new configuration will be added to the apparatus 10A for separating a metal base material from a solid catalyst material of a plate-shaped catalyst element shown in embodiment 1 shown in fig. 1. The same components as those in embodiment 1 will not be described. It is also possible to combine the embodiments 2 and 3 described above. In the apparatus 10A for separating a metal base material and a catalyst solid material of a plate-shaped catalyst element according to embodiment 4, a second roller portion 15B is provided on the downstream side of the first roller portion 15A, and a turn table 24 for rotating the used plate-shaped catalyst element 12A by 90 degrees is provided between the first roller portion 15A and the second roller portion 15B in addition to the apparatus 10A for separating a metal base material and a catalyst solid material of a plate-shaped catalyst element according to embodiment 1.
In this embodiment, by providing the turn table 24 as shown in fig. 6, treatment is performed not from one direction but from another direction, whereby cracks and fissures can be further generated on the surface, and separation of the catalyst at the gear rolls 14 and 14 of the second roll portion 15B can be promoted.
The turret 25 is set to have the same height as the conveyor belt 13, and the used plate-like catalyst elements 12A are automatically extracted by an operator or an extracting device, not shown.
In addition to the turntable 25 for changing the conveying direction, the conveyor belt 13 of the second roller portion 15B may be disposed at a position rotated by 90 degrees with respect to the arrangement of the conveyor belt 13 of the first roller portion 15A, so that the plastic deformation by the gear rollers 14 and 14 may be processed from a plurality of directions.
The solid material extraction device and the solid material extraction method according to each embodiment are grasped as follows, for example.
A method for separating a metal base material and a catalyst solid from each other in a plate-shaped catalyst element according to a first aspect is a method for separating a metal base material and a catalyst solid from each other, the method comprising passing the plate-shaped catalyst element through a roll unit having a plurality of stages of paired gear rolls and plastically deforming the plate-shaped catalyst element at each stage of the gear rolls, and then separating the catalyst solid from the metal base material, the method comprising uniformly supporting the catalyst solid having catalytic activity between meshes and on the surface of the mesh-shaped metal base material.
According to this configuration, the plate-shaped catalyst element is passed through the roll portion having the plurality of stages of paired gear rolls and is plastically deformed at each stage of the gear rolls, whereby the catalyst solid can be separated from the metal base material thereafter, and the treated element after separation of the catalyst solid can be recovered as a valuable object. As a result, the treated metal element from which the catalyst has been peeled or removed can be recovered as a valuable product.
A second aspect of the present invention is a separator for separating a metal base material and a catalyst solid of a plate-shaped catalyst element from a used plate-shaped catalyst element 12A in which a catalyst solid having a catalytic activity is uniformly supported between meshes and on a surface of a mesh-shaped metal base material, the separator including: a roller portion having a plurality of stages of paired gear rollers 14, 14 and performing plastic deformation of different deformation shapes at each stage of the gear rollers; and a catalyst detachment section that detaches the catalyst solid after plastic deformation.
According to this configuration, since the roll portion that plastically deforms the used plate-shaped catalyst element and the catalyst detaching portion that removes the catalyst detached after the plastic deformation are provided, the used catalyst can be easily detached or detached from the used plate-shaped catalyst element by the plastic deformation performed by the roll, and the metal-made treated element after the catalyst is detached or detached can be collected as a valuable object.
Claims (19)
1. A method for separating a metal base material and a catalyst solid from each other in a plate-shaped catalyst element, wherein the metal base material and the catalyst solid are separated from each other in a plate-shaped catalyst element in which the catalyst solid having a catalytic activity is uniformly supported between meshes and on a surface of a mesh-shaped metal base material,
passing the plate-like catalyst element through a roll portion having a plurality of stages of paired gear rolls and plastically deforming at each stage of the gear rolls,
thereafter, the catalyst solids are detached from the metal substrate.
2. The method of separating a metal base material from a catalyst solid material for a plate-shaped catalyst element according to claim 1,
the roller portion plastically deforms different positions of the plate-shaped catalyst element at each stage of the gear roller.
3. The method of separating a metal base material from a catalyst solid material for a plate-shaped catalyst element according to claim 2,
the shape of the gear rolls is different for the roll portion than for the other segments.
4. The method of separating a metal substrate from a catalyst solid of a plate-shaped catalyst element according to claim 3,
the roller portion is different from the other stages of the gear roller in at least one of the tooth height, tooth thickness, tooth pitch, tooth number, tooth profile, and gear type.
5. The method for separating a metal substrate from a catalyst solid of a plate-shaped catalyst element according to any one of claims 1 to 4,
a pair of press rolls are disposed at the front stage of the roll portion, and after the plate-shaped catalyst elements are compressively deformed by the pressure of the press rolls,
and processing by using the roller part.
6. The method of separating a metal substrate from a catalyst solid of a plate-shaped catalyst element according to claim 5,
the convex portion in the plate thickness direction of the plate-shaped catalyst element extends in one direction,
the plate-shaped catalyst element is inserted into the pair of press rollers with a direction in which the convex portions extend as an insertion direction.
7. The method for separating a metal substrate from a catalyst solid of a plate-shaped catalyst element according to any one of claims 1 to 6,
after the separating process at the roll portion,
and removing the catalyst solid remained on the surface of the metal substrate by using spray water washing.
8. The method for separating a metal substrate from a catalyst solid of a plate-shaped catalyst element according to any one of claims 1 to 7,
removing the catalyst solid or moisture remaining on the surface of the metal substrate by air blowing.
9. The method of separating a metal substrate from a catalyst solid of a plate-shaped catalyst element according to any one of claims 1 to 8,
a plurality of the plate-shaped catalyst elements passing through the roller portion are previously stacked,
the plurality of plate-shaped catalyst elements are passed through the roller portion.
10. The method of separating a metal substrate from a catalyst solid of a plate-shaped catalyst element according to any one of claims 1 to 9,
before or while passing the roll portion,
subjecting the plate-shaped catalyst element to an acid treatment.
11. The method of separating a metal substrate from a catalyst solid of a plate-shaped catalyst element according to any one of claims 1 to 10,
the metal base materials from which the catalyst solid is removed are stacked and subjected to a pressing process to reduce the volume.
12. A separation device for separating a metal base material and a catalyst solid of a plate-shaped catalyst element, wherein the metal base material and the catalyst solid are separated from each other by the plate-shaped catalyst element in which the catalyst solid having a catalytic activity is uniformly supported between meshes and on a surface of the mesh-shaped metal base material,
the separation device has:
a roller portion having a plurality of stages of paired gear rollers and performing plastic deformation of different deformation shapes at each stage of the gear rollers; and
and a catalyst detachment section that detaches the catalyst solid after plastic deformation.
13. The separation apparatus for separating a metal base material from a catalyst solid of a plate-like catalyst element according to claim 12,
the shape of the gear rolls is different for the roll portion than for the other segments.
14. The separation apparatus for separating a metal base material from a catalyst solid of a plate-shaped catalyst element according to claim 13,
the roller portion is different from the other stages of the gear roller in at least one of the height of the gear, the thickness of the gear, the pitch, the number of the teeth, the shape of the teeth, and the type of the gear.
15. The separation device for separating a metal base material of a plate-shaped catalyst element from catalyst solids according to any one of claims 12 to 14,
a pair of press rolls are arranged at the front section of the roll part,
after the plate-shaped catalyst elements are compressively deformed by the pressure of the press rolls,
and processing by using the roller part.
16. The separation apparatus for separating a metal base material of a plate-shaped catalyst element from a catalyst solid according to any one of claims 12 to 15,
the separation device has a water washing section provided on the downstream side of the catalyst separation section, and removes the catalyst solid remaining on the surface of the metal base material by jet water washing.
17. The separation apparatus for separating a metal base material of a plate-shaped catalyst element from a catalyst solid according to any one of claims 12 to 16,
the separation device has an air blowing section that removes the catalyst solids or moisture remaining on the surface of the metal base material by air blowing.
18. The separation apparatus for separating a metal base material of a plate-shaped catalyst element from a catalyst solid according to any one of claims 12 to 17,
the separator has an acid treatment section that performs an acid treatment on the plate-shaped catalyst element before or while passing through the roller section.
19. The separation apparatus for separating a metal base material of a plate-shaped catalyst element from a catalyst solid according to any one of claims 12 to 18,
the separation device has a pressing section that stacks the metal base material from which the catalyst solid is removed, and reduces the volume by pressing.
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| JP2020-219321 | 2020-12-28 | ||
| JP2020219321 | 2020-12-28 | ||
| JP2021069055A JP6929480B1 (en) | 2020-12-28 | 2021-04-15 | Method and apparatus for separating the metal substrate of the plate-shaped catalyst element and the catalyst solid |
| JP2021-069055 | 2021-04-15 |
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| CN114682605A true CN114682605A (en) | 2022-07-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115318795A (en) * | 2022-08-31 | 2022-11-11 | 华能重庆珞璜发电有限责任公司 | Flat-plate type catalyst powder separating and recovering device and abrasion proportion determining method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116328855A (en) * | 2023-03-06 | 2023-06-27 | 苏州西热节能环保技术有限公司 | Automatic cleaning and stripping method for plate-type catalyst |
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| JP6929480B1 (en) | 2021-09-01 |
| JP2022104494A (en) | 2022-07-08 |
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