KR20050093849A - Metal catalyst recovery system - Google Patents

Abstract

a container into which materials each including a metal substrate carrying a metal catalyst and an inner case in which the metal substrate is supported internally are thrown; impact blades which rotate inside the container, destroy the materials by impact to make the materials have a size to fall by its own weight, and separate poweder including the metal catalyst from the destroyed pieces of the materials, a floating means which floats the seaparated powder higher upward inside the container, and a powder collector which sucks in and recovers the powder floating inside the container.

Description

Metal catalyst recovery system {METAL CATALYST RECOVERY SYSTEM}

The present invention relates to a metal catalyst recovery system for recovering powder including a metal catalyst from a discarded catalytic converter for an exhaust system of a vehicle.

A catalytic converter is located in the middle of the exhaust gas system for the purpose of purifying exhaust gas emitted from an internal combustion engine such as a vehicle. The catalytic converter has a structure in which a metal carrier carrying a metal catalyst is bonded to a cylindrical metal inner case so as to be supported internally in the converter, and a platinum group catalyst, which is generally a noble metal, is used as the metal catalyst. These platinum group catalysts are valuable and expensive and need to be recovered and recycled. Conventional metal catalyst recovery systems of this kind are disclosed in Japanese Patent Laid-Open No. 06-205993.

In a conventional metal catalyst recovery system, the catalytic converter is shredded into an impact mill to recover the metal catalyst from the discarded catalytic converter.

However, such a conventional recovery system is a metal carrier supporting the metal catalyst and the metal catalyst such as the inner and outer casings of the catalytic converter and the crushed fragments of the catalytic converter parts, etc. are mixed and does not separate from each other even after grinding. I have a problem. Thus, in order to separate the metal catalyst from the crushed debris of the catalytic converter component, the conventional metal catalyst recovery system needs to arrange a radial blower and a cyclone separator downstream of the impact mill. This results in a larger system, higher cost, and longer work time.

The present invention has been invented to solve the above problems, the object of which can be made smaller than the conventional metal catalyst recovery system, allows to reduce the recovery cost and recovery operation time, and to remove the metal catalyst from the catalytic converter An object of the present invention is to provide a metal catalyst recovery system capable of recovering powder containing more efficiently.

BRIEF DESCRIPTION OF THE DRAWINGS The objects, features and advantages of the present invention will become apparent from the following description with reference to the accompanying drawings.

1 is an overall view of a metal catalyst recovery system according to a first embodiment of the present invention.

2 is a plan view showing the interior of the shredding separator according to the first embodiment.

3 is a side cross-sectional view taken along line S3-S3 of FIG. 2.

Fig. 4 is a plan view showing the attachment state of the filter member used in the crush separator of the metal catalyst recovery system according to the first embodiment.

5 is an enlarged exploded perspective view of the filter member of FIG. 4.

6 is an enlarged side cross-sectional view of the impact blade of the shred separator of FIG.

FIG. 7A is a diagram for illustrating the filtration operation of the filter of the metal catalyst recovery system according to the first embodiment, in which the filtration container 4c is not vertical.

FIG. 7B is a view showing the filtration operation of the filter of the metal catalyst recovery system according to the first embodiment, showing a state in which the filtration container 4c is inclined as compared with the case of FIG. 7A.

8 is an overall view of a metal catalyst recovery system according to a second embodiment of the present invention.

Fig. 9 is a side sectional view showing the inside of the shredding separator according to the second embodiment.

10 is an enlarged exploded perspective view of the filter member used in the crush separator of FIG.

FIG. 11 is an enlarged assembled perspective view of the filter member used in the shred separator of FIG. 9. FIG.

It is a figure which shows the airflow state in the vortex type inner part of the crushing separator of FIG.

FIG. 13 is a diagram for illustrating a recovery effect of the metal catalyst of the crushing separator of FIG. 9.

14 is a side cross-sectional view showing a modification of the shred separator of FIG.

FIG. 15 is a side cross-sectional view showing another variation of the shred separator of FIG. 9.

FIG. 16 is a view illustrating a modified example in which a connection relationship between suction ducts of the metal catalyst recovery system of FIG. 1 is changed.

The metal catalyst recovery system according to the present invention comprises: a shredding separator having a container in which the treatment medium is crushed and comprising at least a catalyst carrier for supporting the metal catalyst of the catalytic converter for a vehicle, rotating inside the container and the treatment medium falling by its own weight An impact blade for pulverizing the treatment medium to separate the powder containing the metal catalyst from the debris of the pulverized treatment medium, and floating means for suspending the separated powder into the upper side of the container, And a dust collector for sucking and recovering the powder suspended in the container by the floating means from the first suction port.

In the metal catalyst recovery system according to the present invention, the impact blade impacts the catalyst carrier such that the catalyst carrier collides with the inner wall of the container. When there are a plurality of catalyst carriers in the container, the catalyst carriers collide with the inner wall of the container and / or collide with each other. In particular, the impact blade and the inner wall of the container are impacted and broken by impacting the catalyst carrier so that the catalyst carrier has a size falling by its own weight, and separates the powder containing the metal catalyst from the catalyst carrier. Therefore, the separated powder is sucked via the first suction port so as to float to the upper portion inside the container by the floating means and to be recovered by the powder dust collector.

Therefore, the powder containing the metal catalyst is suspended inside the upper portion of the container by the floating means so as to be recovered, so that the recovered powder is not mixed with the crushed debris of the treatment medium of the catalytic converter, whereas it is mixed in the prior art. . As a result, a plurality of separators and a powerful suction machine are not required, whereby the powder containing the metal catalyst can be recovered with high recovery rate on a small installation scale without requiring high cost and long working time.

The apparatus for crushing the treatment medium preferably further includes an impact member for crushing the catalyst carrier.

Therefore, the impact blades strike the catalyst carrier and impact member which carry the metal catalyst, and they collide with the inner wall of the container and / or collide with each other. This results in the impact member promoting pulverization of the catalyst carrier and promoting separation of the powder containing the metal catalyst from the catalyst carrier.

The impact material is preferably an inner case for supporting the catalyst carrier of the catalytic converter.

Therefore, the inner case of the catalyst carrier and the catalytic converter do not need to be separated from each other when they are fed into the container, which shortens the recovery operation time. Moreover, they are crushed and separated by the impact blades, and the crushed fragments of the inner case serve as an impact member for crushing and to cut the catalyst carrier into small fragments, which promotes the crushing of the catalyst carrier and It promotes the separation of the powder containing the metal catalyst from the.

The impact blade is disposed in the lower inner portion of the container, and the first suction port of the powder dust collector is preferably provided at a position higher than the impact blade inside the container.

Therefore, when the treatment medium is impacted and crushed by the impact blade, the pulverized debris of the treatment medium falls to the bottom of the container by the weight of the debris, and the powder containing the finely pulverized metal catalyst is contained in the container. It floats upward inside, and for this reason, powder containing a metal catalyst can be collect | recovered efficiently.

Preferably, the first suction port has a filter member capable of sucking the powder containing the metal catalyst from at least two different directions.

Therefore, the crushed debris of the treatment medium is prevented from being sucked into the first suction port because a filter member capable of sucking the powder containing the metal catalyst from at least two different directions is attached to the first suction port. Moreover, since the filter member can be sucked from at least two different directions, the powder containing the metal catalyst can be sucked from the other direction of the filter member even if the crushed debris is sucked in one direction of the filter member.

The container preferably has an impact protrusion inside thereof and causes the impact protrusion to collide with the catalyst carrier and the impact member.

Therefore, the impact protrusion formed integrally with the impact blade or separated from the impact blade collides with the carrier, whereby the treatment medium is pulverized in a short time.

The container is preferably mounted in an inclined state.

Therefore, since the container is mounted in an inclined state, catalyst carriers, impact members, and the like supplied into the container are easily mixed in the container. This results in the catalyst carrier, impact member, and the like moving towards the bottom of the container, which is the position where the impact blade moves and is easily crushed by the impact blade. On the other hand, the powder containing the metal catalyst floats toward the inner upper side of the container, while the catalyst carrier, the impact member and the like are efficiently crushed by the impact.

The impact blade preferably blows airflow from the lower portion of the impact blade tip inside the container so that the powder containing the metal catalyst is suspended.

Therefore, the powder containing the metal catalyst is suspended by the airflow blown from the impact blades inside the container, and therefore, the powder containing the metal catalyst can be floated higher inside the container. Moreover, it is not necessary to have a large suction machine such as the powerful radial blower required in the prior art, and the powder containing the metal catalyst can be sucked by the small powder dust collector. In addition, the powder containing the metal catalyst can be prevented from sticking to the inner wall of the container, which contributes to increase the recovery efficiency of the powder containing the metal catalyst.

After the impact blade crushes the catalyst carrier by impact such that the catalyst carrier has a size that the catalyst carrier can fall by its own weight, the rotation speed of the impact blade is decelerated to facilitate separation of the powder containing the metal catalyst from the catalyst carrier. It is desirable to.

Therefore, the rotational speed of the impact blade is reduced after the impact milling of the treatment medium, so that after the milled debris of the catalyst carrier has been impact milled, all of the powder containing the metal catalyst moves under the bottom part of the container. By means of floating means it is floated to a higher position inside the container. As a result, separation of the powder containing the metal catalyst becomes easy. Furthermore, the reduction in the rotational speed of the impact blades causes scrap generated from the processing medium to fall below the bottom of the container, which allows for a more reliable separation operation.

The container is provided in the lower part of the apparatus with an impact member for impact crushing the catalyst carrier by the impact blade and a discharge port for discharging the crushed debris after the impact crushing, and the dust collector is discharged through the second suction port. Is preferably connected to.

Therefore, the powder containing the metal catalyst may be pulverized after the impact pulverization in the lower part of the container, even if the powder containing the small amount of the metal catalyst is suspended when the pulverized debris of the treatment medium is discharged from the container after the impact pulverization. Recovered through the second suction port of the powder dust collector provided in the discharge port for discharging the debris.

The container has an air discharge port that can communicate between the outside and the inside of the container.

Therefore, an air flow flowing in and out of the air discharge port is formed and moves from the inner lower side to the upper side of the container, and flows out of the first suction port of the powder dust collector, so that the air inside the container smoothly flows in and out, thereby The powder containing the metal catalyst suspended in is sucked from the first suction port so as to be efficiently recovered.

Preferably, the first suction port is formed in the upper center portion of the container, and the container is formed in a cylindrical shape and an air blowing port is provided on the upper side portion of the container, and the air blowing port is configured to conduct vortices inside the container. It is preferable to blow downward along the inner wall of the container so as to form.

Therefore, the vortex flow of air can be produced in the container, which causes the crushed debris and dust of the treatment medium having a heavier weight compared to the metal catalyst powder to be placed near the inner wall inside the container by the centrifugal force of the vortex flow of air. Is easily collected, and therefore only the powder containing the metal catalyst can be recovered from the first suction port in the upper center portion of the container fairly efficiently. Moreover, the pulverized debris and dust collected near the inner wall of the container continue to be affected by the vortex flow, so that a small amount of powder of the metal catalyst contained therein is suspended in the inside of the container and separated and treated. Almost all powders including the metal catalyst contained therein can be recovered.

The metal catalyst recovery system includes: a sieving container in which the treatment medium is fed with crushed debris by an impact blade, and vibrating the filtration container to filter the powder downward from the filtration container to include the metal catalyst from the crushed debris. It is preferable to further provide a filtration machine for separating the powder.

Therefore, the filtration machine treats the pulverized debris of the processing medium from the container after impact crushing into the filtration container, for example, via a conveyor, and vibrates the filtration container to filter the powder containing the metal catalyst downward from the filtration container. The powder containing the metal catalyst remaining in the crushed fragments of the medium is separated. Therefore, the powder containing the metal catalyst remaining in the crushed fragments of the treatment medium after the impact crushing can be further recovered, and the metal catalyst of the treatment medium can be recovered almost completely.

The powder dust collector is preferably sucked by the filtration machine to recover the powder containing the metal catalyst inside the filtration container while being vibrated.

Therefore, the powder dust collector recovers the powder containing the metal catalyst suspended inside the filtration container by the filtration machine during the vibration, and recovers even a small amount of the powder containing the metal catalyst, which is a powder containing the metal catalyst. Contributes to increasing the recovery efficiency.

Hereinafter, a metal catalyst recovery system according to an embodiment of the present invention will be described in detail with reference to the drawings.

Example 1

Hereinafter, a metal catalyst recovery system according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 7B.

1 is an overall view of a metal catalyst recovery system according to a first embodiment of the present invention, FIG. 2 is a plan view showing an inner surface of a crush separator of the metal catalyst recovery system of FIG. 1, and FIG. 3 is S3- of FIG. 4 is a plan view showing a state where the filter member is attached to the crush separator, FIG. 5 is an exploded perspective view of the filter member of FIG. 4, and FIG. 6 is a sectional side view of the impact blade of the crush separator. 7A and 7B illustrate the operation of the filtration machine of the metal catalyst system of FIG.

As shown in FIG. 1, the metal catalyst recovery system according to the first embodiment grinds the treatment medium 6 of a metal catalyst converter for a vehicle such as an automobile, and the catalyst carrier and other constituent materials constituting the treatment medium 6. A crush separator 1 for separating the powder 30 including the metal catalyst from the crushed debris; A powder dust collector 2 which is sucked by the crush separator 1 to recover the powder 30 separated from the catalyst carrier or the like; A conveyor 3 for conveying the crushed debris obtained from the crush separator 1; And a filtration machine 4 for recovering the powder 30 remaining in the crushed debris conveyed by the conveyor 3.

The metal catalyst converter has a catalyst carrier 7a carrying a metal catalyst, an inner case 7c, shown in cross section, supporting the catalyst carrier 7a, and a catalyst carrier 7a and an inner case 7c. It is provided with the outer case 7b arrange | positioned at. Metal catalysts are made of precious metals such as platinum. As the catalyst carrier 7a, a metal carrier is used in the present catalytic converter, and each has a flat metal sheet sandwiching the corrugated metal sheet and the corrugated metal sheet formed in a cylindrical shape so that the metal catalyst is coated and supported in the inner case 7c.

The treatment medium 6 constitutes part of a discarded metal catalytic converter comprising at least both an impact member for crushing the catalyst carrier 7a and a catalyst carrier 7a carrying a metal catalyst. As the impact member, the inner case 7c and the outer case 7b are used in the present system of FIG.

The shredding separator 1 as shown in FIGS. 2 and 3 is mounted to the base table 5 so that the center line of the container 1a is inclined rather than vertical, and has a container 1a formed in a cylindrical shape. On the upper surface of the container 1a, a throw in port 1b is formed, and when the lid is opened in a semicircular shape, the processing medium 6 to be crushed is supplied into the container 1a through the lid. The lid 1c can be opened and closed in the direction of the arrow P. FIG.

In addition, the lids 1c and Lid have an air discharge port 11 which communicates in and out of the container 1a. The inner wall 1d of the container 1a is made of wear-resistant steel and the upper portion of the container is formed with a first suction port 1e connected to the suction duct 2a of the dust collector 2, which will be described later. The 1st suction port 1e is arrange | positioned in the position which opposes the air discharge port 11 in the radial direction of the container a so that the powder 30 may be sucked efficiently and airflow will be produced inside the container 1a.

The filter member 20 which will be described later is attached to the first suction port 1e and arranged inside the container 1a. As shown in Figs. 4 and 5, the filter member 20 has a predetermined shape along the inner wall of the container 1a, the upper, lower and front suction portions 24 to 26 having a plurality of suction holes 23, respectively. It has an outer peripheral portion 22 formed as.

The outer periphery 22 is formed with an opening 21 at its middle portion, which corresponds to the first suction port 1e, and is fixed to four places on the inner wall by bolts (not shown) on both sides thereof. The upper and lower suction portions 24 and 25 are integrally formed by welding with the outer periphery at the upper and lower sides, respectively. On the other hand, the front suction part 26 is detachably attached to the outer peripheral part 22 by six bolts (not shown), which provides the outstanding maintenance property, such as cleaning the filter member 20 inside.

The sum of the hole dimensions of each suction hole 23 of the suction portions 24 to 26 should be at least larger than the hole dimension of the opening portion 21, which is why the powder 30 is sucked into the container 1a. This does not degrade.

As shown in FIG. 3, the opening portion 1f is formed at the lower portion of the inner wall 1d, and the opening portion 1f is discharged through the lid 1g which can be opened and closed in the direction of the arrow Q. 12). The discharge port 12 is for discharging the crushed debris described later from the powder containing the metal catalyst after being impact crushed in the container 1a of the crush separator 1, and fixed as a cover for covering the opening 1f. Has a hood (F). As shown in FIG. 1, the hood F has a second suction port 13 connected between the inside of the hood F and the suction duct 2a with respect to the powder dust collector 2.

In addition, the inner wall 1d of the container 1a is applied to the center of the container 1d so as to impact the pulverized treatment medium 6 which is thrown out by the impact blade 1n and the impact protrusion 1p to be described later and further crush. Eight grinding protrusions 1h made of wear-resistant steel protruding from the inner wall 1d at equal intervals in the outer circumferential direction of the container 1a are provided.

In the outer circumferential direction of the container 1a, a blade rotor 1i driven to rotate in the direction of the arrow in FIG. 2 is provided at the bottom portion of the container 1a. As shown in FIG. 6, the blade rotor 1i includes a pressure plate 1k fixed to the cover 1j, a blade support plate 1L supporting the impact blade 1n and fixed to the pressure plate 1k, It includes a rotating shaft (1m) fixed to the blade support plate (1L) for rotating the impact blade (1n).

The cover 1j is formed in a cylindrical shape and is disposed at the center position of the blade rotor 1i and the lower outer circumferential end of the cover is fixed to the pressing plate 1k by welding X.

The pressing plate 1k is formed in a disk shape and is fixed to the blade supporting plate 1l by the bolt B1.

At both ends of the blade support plate 1L, two impact blades 1n fixed by bolts B2 are provided as detachable as shown in FIG. 2. Each of these impact blades 1n has an inclined surface 1o formed on the end side and an impact protrusion 1p formed on the base end side so as to protrude upward from the upper surface of the impact blade 1n.

In other words, the pressure plate 1k, the impact blade 1n, and the impact protrusion 1p are made of wear-resistant steel like the inner wall 1d.

The blade support plate 1L is fixed by the bolt B3 and has a small gap in the lower surface plate 1q of the container 1a with respect to the rotation axis 1m penetrating the lower portion of the container 1a in that state. .

The air flow passage 1r is formed at the shaft center position of the rotation shaft 1m. The upper side of the air flow passage 1r is branched in two directions so as to communicate with the inner surface hole of the communication passage 1s formed inside the blade support plate 1L. The lower side of the air flow passage 1r is connected to the adapter 1w to which the air supply tube 1v is connected.

The communication passage 1s is connected to the outer hole together with the inner hole of the communication pipe 1t fixed to the lower portion of the impact blade 1n. The communication pipe 1t is connected to the inside of the container 1a in the outer hole.

Here, the container 1a, the impact blade 1n, the impact protrusion 1p, and the pulverization protrusion 1h are air flows so as to float the powder 30 containing the metal catalyst higher above the inside of the container 1a. It functions as a floating means of the present invention to produce (AF).

The communication passage 1s, the communication pipe 1t, and the air passage 1r also function as floating means of the present invention.

Moreover, the rotating shaft 1m is provided in the lower part together with the driving roller 1z fixed to the output shaft of the motor 1y and the driven roller 1u wound by the belt 1x. The rotating shaft 1m is enclosed by the outer engagement member 10 fixed to the base table 5 and rotatably supported.

The powder dust collector 2 sucks and collects the powder 30 floating inside the container 1a of the crush separator 1 through the suction duct 2a during and after being crushed by the crush separator 1. In order to pass through the powder 30, a filter 2b through which the crushed debris can pass, and a storage container 2c for collecting the powder 30 passing through the filter 2b are collected.

The conveyor 3 transports the crushed debris of the processing medium 6 crushed by the impact in the crush separator 1 to the filtration machine 4.

As shown in FIGS. 7A and 7B, the filtration machine 4 is driven by the conveyor 3 to recover as much of the powder 30 as possible, even if the amount remaining in the crushed debris of the processing medium 6 is small. The ground debris of the transported treatment medium 6 is filtered.

The filtration machine 4 is a base table 4a installed on a floor (not shown) and a filtration container 4c supported by the base table 4a so as to be able to pivot in the direction of the arrow R around the pivot axis 4b as a pivot axis. ) And a storage container 4r for collecting the powder 30 falling from the filtration container 4c.

The filtration container 4c has the lever member 4d which protrudes outward from the lower side part of the filtration container 4c. The lever member 4d is an actuator such as a motor, a solenoid or the like, and is driven upward and downward as the actuating rod 4e of the drive device 4f contracts and protrudes.

That is, as shown in Figs. 7A and 7B, the drive device 4f has an actuating rod in the vertical direction to apply the swing motion about the pivot axis 4b in the direction of the arrow R with respect to the filtration container 4c. 4e is shrunk and protruded to move the lever member 4d upwards and downwards, so that the crushed debris of the treatment medium 6 in the filtration container 4c is pivoted so that the powder 30 falls.

In the filtration container 4c, two chambers 4j and 4j are formed by the upper and lower filters 4g and 4h and the upper filter 4g creates a wider mesh gap than the lower filter 4h. It is formed to have.

A portion between the upper and lower filters 4g and 4h of the inner wall 4k of the filtration container 4c is provided with a suction port 41 connected to the suction duct 2a in communication with the powder dust collector 2, and the filter 4 m is provided on the suction port 41.

A shaft diameter portion 4p is formed in the lower portion of the filtration container 4c with a hole having a filter 4x having a mesh gap smaller than the filters 4g and 4h, and the storage container 4r is formed of the filters 4g and 4h. It is provided under the hole of the shaft diameter part 4p for accommodating the powder 30 passing through 4x.

Hereinafter, the operation and advantages of the metal catalyst recovery system according to the first embodiment will be described with reference to the accompanying drawings.

When the metal catalyst recovery system according to the first embodiment is used, firstly, a catalyst catalyst such as a metal catalyst, a metal carrier carrying a metal catalyst, an outer case 7b and an inner case 7c of the catalytic converter as an impact member is used. A predetermined amount, for example 10 Kg, of the formed processing medium 6 is introduced into the container 1a through the input port 1b of the shredding separator 1, and the lid 1c is closed.

Next, the crushing separator 1 and the powder dust collector 2 are operated. At this time, the drive roller 1z fixed to the output shaft of the motor 1y on the shredding separator 1 rotates to the side, and the rotational force is transmitted to the driven roller 1u through the belt 1x, whereby the driven The roller 1i is rotated at a predetermined rotational speed, for example, 1500 rpm.

Then, the impact blade 1n of the blade rotor 14 disperses and pulverizes the pulverization projection 1h and / or the inner wall and their impingement so that the processing medium 6 is crushed into debris by impact. At this time, the impact protrusion 1p of the impact blade 1n and the grinding protrusion 1h attached to the inner wall 1d of the container 1a also collide with the processing medium 6, and the grinding medium and the processing medium 6 The processing medium 6 is efficiently crushed by the impact force so as to promote separation of the powder 30 from the crushed debris.

In such crushing, the crushed debris of the inner case 7c and the outer case 7b functions as an impact member for cutting the metal carrier 7a into small debris and accelerates the crushing. The inner case 7c is better at cutting the metal carrier 7a than the outer case 7b.

Moreover, the inclined surface 1o of the impact blade 1n prevents the crushed debris of the processing medium 6 from sticking between the impact blade 1n and the inner wall 1d. Furthermore, since the container 1a is mounted in an inclined state, the crushed debris of the processing medium 6 is impacted while the impact blade 1n, the impact protrusion 1p, and the crushing protrusion 1h are mixed by the impact blade ( It moves downward according to gravity so that it can be efficiently ground and crushed by 1n).

Therefore, the catalyst carrier 7a is cut into pieces by separating the powder 30 from the catalyst carrier 7a of the processing medium 6 so as to float inside the container 1a.

In addition, as shown in FIG. 6, air having a predetermined pressure is supplied from the air supply tube 1v into the container 1a. In particular, air passes from the air supply tube 1v through the adapter 1w and the airflow passage 1r and branches in two directions on the upper side of the airflow passage 1r, and communicates with the communication passage 1s and the communication pipe 1t. ), It is blown toward the inner wall 1d of the container 1a through the impact blade 1n, thereby generating an air flow AF flowing upward along the inner wall 1d of the container 1a.

As such efficient pulverization, when the air flow AF is suspended above the inside of the container 1a and moved downward by its own weight so that the airflow AF can be easily separated from the crushed debris of the treatment medium 6, It does not pass through the filter 20 and is sucked to be collected by the powder dust collector 2 through the filter 20 and the suction duct 2a.

On the other hand, as shown in FIG. 3, after the powder dust collector 2 sucks the powder 30 from the first suction port 1e through the suction port 2a, the powder 30 uses the filter 2b. Is stored in the storage container 2c. At this time, an air flow B flowing from the air discharge port 11 into the first suction port 1e in the upper region of the container 1a is generated, which causes the flow of the powder 30 floating inside the container 1a. Allow for efficient recovery.

Moreover, as described above, the filter member 20 has a first suction port 1e for sucking the powder 30 from the suction ports 24 to 26 in three directions, and therefore the inner case 7c. Also, the powder 30 can be sucked even when the crushed debris of the processing medium 6, such as a peeled part such as the outer case 7b, is sucked into any of the suction portions 24 to 26.

Next, when the rotational speed of the impact blade 1n is decelerated to approximately 300 rpm after a predetermined time has elapsed, all the crushed debris of the metal carrier 7a of the processing medium 6 crushed by the impact is treated. In order to facilitate separation of the powder 30 from the catalyst carrier 7a and the powder 30 of (6), the powder 30 is moved to the lower portion of the inner side of the container 1a. ) Is kept floating above the inside of the container 1a so as to be efficiently recovered.

Next, after the rotational speed of the impact blade 1n is reduced and a given time has elapsed, the lid 1g of the container 1a is opened while the rotation of the impact blade 1n is stopped, and the treatment medium after the impact crushing is performed. The crushed debris of (6) is taken out from the discharge port 12 to the conveyor 3. At this time, the small amount of powder 30 suspended inside the hood F is recovered to the powder dust collector 2 through the second suction port 13 of the discharge port 12 and the suction duct 2a.

Next, the conveyor 3 and the filtration machine 4 operate. At this time, the conveyor 3 pours the crushed debris of the catalyst carrier 7a of the processing medium 6 into the filtration container 4c of the filtration machine 4, and the filtration machine 4 of the processing medium 6 The pulverized debris is pivoted in the direction of the arrow R, thereby through the filters 4g, 4h, 4x on the pulverized debris of the treatment medium 6 into a container 4r located below the filtration machine 4. The remaining powder 30 is separated to store it.

Furthermore, the crushed debris of the treatment medium 6 is sorted into the rooms 4i and 4j according to the size by the filters 4g and 4h, and the crushed debris such as the catalyst carrier 7a is stored in the storage container 4a. It is further filtered with a filter 4x to prevent it from becoming. Further, the powder 30 suspended inside the filtration machine 4 is recovered from the suction port 41 to the powder dust collector 2 through the suction duct 2a, so that even a small amount of powder 30 can be recovered. have.

Therefore, in the metal catalyst recovery system according to the first embodiment, the container 1a, the impact blade 1n, the impact protrusion 1p, and the grinding protrusion 1h, which function as the floating means of the present invention, contain a metal catalyst. Air flow AF is generated in order to further float the powder 30 to the inside of the container 1a, thereby achieving the advantage of easily recovering the powder 30 within a short time.

In addition, the powder 30 slows down the rotational speed of the impact blade after the impact crushing in order to promote the separation of the powder from the pulverized debris of the treatment medium 6, and also the first suction port 1e from the air discharge port 11. The airflow is blown by the air flow blower to generate airflow B in the inner upper region of the container 1a, so that the airflow B can be efficiently recovered within a short time.

Moreover, most of the powder 30 contained in the processing medium 6 before impact crushing is powder on the discharge port 12 for discharging the crushed debris of the processing medium 6 from the container 1a after the impact crushing. A second suction port 13 of the dust collector 2 is provided, and the pulverized debris of the treatment medium 6 can be recovered by filtration by the filtration machine 4.

Example 2

In the following, a second embodiment of the present invention will be described with reference to the drawings.

FIG. 8 is an overall view of a metal recovery system according to a second embodiment of the present invention, FIG. 9 is a side cross-sectional view showing the inside of a crush separator of the metal catalyst recovery system of FIG. 8, and FIG. 10 is a crush separator of FIG. Is an exploded perspective view of the filter member of FIG. 11, FIG. 11 is an assembled perspective view of the filter member of FIG. 10, FIG. 12 is a view showing the air flow inside the pulverizing separator, and FIG. .

In other words, the metal recovery system according to the second embodiment of the present invention is substantially the same as that of the above-described embodiment except that there is no filtration machine described in the first embodiment and the structure of the shredding separator is partially changed. Only the differences are explained in detail. The same parts have the same reference numerals, and descriptions thereof will be omitted.

As shown in FIG. 8, the metal catalyst recovery system according to the present embodiment includes a crush separator 1 and a powder dust collector 2.

As shown in Fig. 9, the shredding separator 1 according to the present embodiment is provided with the first center of the upper central portion of the container 1a instead of the first suction port 1e of the inner wall 1d described in the first embodiment. A suction port 19 is provided, and a suction duct 20a and a filter member 41 are attached thereto. In addition, the air discharge port of the lid 1c is also omitted.

As shown in Figs. 10 and 11, the filter member 41 is formed in a cylindrical shape as a whole, the rear surface portion is disc shaped, and the main body portion 41b is cylindrical having a bottom portion formed integrally by welding. It is a prize. The filter member 41 thus formed is fixed to the upper center portion of the container 1a with bolts at four mounting holes 41c (not shown) provided in the rear surface portion 41a.

In addition, a hole portion 43 having a hole having the same dimension as that of the first suction port 19 is formed in the rear surface portion 41a. Further, a plurality of suction holes 42 are formed in the outer peripheral surface of the main body portion 41b, and the sum of the hole dimensions of the suction holes 42 is larger than the hole size of the first suction port 19, and therefore The suction performance of sucking the powder 30 containing the metal catalyst does not decrease.

As shown in FIG. 9, the air blowing port 44 is formed in the inner wall 1d to open in a long hole shape, and is provided along the outer circumferential direction of the inner wall 1d to form a vortex in the container 1a and downwards. It is connected to the inclined connection pipe 45. In other words, the connecting pipe 45 is connected to an air blowing port 44 having an unshown flap and a filter for preventing backflow from the container 1a toward the connecting pipe 45 and a blower not shown.

Hereinafter, the operation and advantages of the metal catalyst recovery system according to the second embodiment of the present invention will be described.

When the shredding separator 1 is operated in the metal catalyst recovery system according to the second embodiment, the impact blades rotate, and as shown in FIG. 12, the air supplied from the air supply tube 1v is supplied to the container 1a. It is blown so as to be discharged upward along the inner wall 1d of the airflow, thereby generating the airflow AF flowing upward of the container 1a.

In addition, vortex flow Y, which flows downward along the inner wall 1d by the air discharged from the air blowing port 44, is generated in the container 1a.

Under these conditions, when the processing medium 6 is crushed by impact, the forced vortex is impacted by the mixed flow of relatively large particulate debris and powder 30, such as dust and crushed debris, as shown in FIG. The rotational force of the blade 1n is added and generated inside the container 1a.

Then, dust and crushed debris having a heavier weight as compared to the powder 30 are easily collected near the lower central part of the inner wall 1d by centrifugal force by forced vortex and gravity, Only 30 floats to the central portion higher than the dust and crushed debris on the inner side of the inner wall 1d and is collected fairly efficiently from the first suction port 19 through the suction hole 42 of the filter member 41.

In other words, if the shredding separator 1 has a structure having a rotor for generating a vortex flow inside the container 1a, irregular movement of fine particles in the flow adjacent to the inner wall 1d is limited, and therefore The crushed debris collected near the inner wall 1d is not significantly affected by the vortex flow, and the powder 30 remaining in the pulverized powder is not separated.

However, in the second embodiment, since the vortex flow Y is generated by the air blown from the air blowing port 44 of the inner wall 1d, the crushed debris that collects near the inner wall 1d is ranked in the ranking vortex. It is continually affected by the vortex flow Y, which is similar to, because of this, the powder 30 remaining in the crushed debris is separated and suspended inside the container 1a. In addition, the vortex flow Y and the air flow AF create turbulence, which facilitates mixing of the treated medium 6 by impact in the container 1a.

Therefore, in the second embodiment, the powder 30 does not remain in the crushed debris of the treatment medium 6 after the impact crushing, so that practically all the powders 30 supported on the catalyst carrier before the impact crushing are removed. Can be recovered, thereby eliminating the filtration machine.

In other words, the operation of the shredding separator 1 and the dust collector 2 is the same as that of the first embodiment, and the description thereof is omitted.

It is also conceivable that the rotational direction of the vortex flow Y described in this embodiment can be appropriately set by taking the rotational direction of the impact blade 1n.

While each embodiment of the present invention has been described above, the specific structure of the present invention is not limited to these embodiments. The present invention includes any design change without departing from the gist of the present invention.

For example, as shown in FIG. 14, the air blowing port 44 (connecting pipe 45 and) may be provided at two positions on the inner wall 1d, and the blowing amount thereof may vary with time. .

In addition, as shown in FIG. 15, the connecting pipe 45 may be an air discharge port 50. The air discharge port 50 has a flap for preventing backflow from the filter and the container 1a to the atmosphere. At this time, the outside air is supplied from the side through the air discharge port 50 into the container, thereby forming a free vortex similar to a tidal vortex or a typhoon caused by currents along the inner wall 1d.

In addition, the shape of an impact blade and the number of mounting impact blades are set suitably.

In addition, in the crushing separator 1, in the dust collector 2, in the filtration machine 4, various kinds of filters may be provided at a position where the powder 30 including the metal catalyst passes.

It is also possible to select whether or not to attach the impact protrusion 1p and the crushing protrusion 1h, and the catalyst for automobile made of stainless steel based on chromium, made of stainless steel based on nickel The number of protrusions to be attached may be selected according to the type of catalyst such as a chemical plant catalyst, a ceramic catalyst, and the like.

Furthermore, in the metal catalyst recovery system shown in FIG. 1, the hood F of the crush separator 1 and the powder dust collector 2 is a suction duct connecting the branch suction duct and the filtration machine 4 and the powder dust collector 2. Although connected by 2a, as shown in FIG. 16, such a branch suction duct is not necessary.

The treatment medium may be only a catalyst carrier carrying a metal catalyst, or a catalyst carrier carrying a metal catalyst and an inner case of a catalytic converter.

In addition, the number of impacts may be different from the number of parts of the catalytic converter.

The metal catalyst recovery system according to the present invention is useful for recovering powder containing metal catalysts from waste catalytic converters used in exhaust systems of vehicles.

Claims (14)

In a metal catalyst recovery system, A container comprising a catalyst carrier for carrying a metal catalyst of a catalytic converter for a vehicle supplied with a processing medium to be pulverized; An impact blade that rotates inside the container to crush the catalyst carrier by applying an impact such that the catalyst carrier has a dimension falling by its own weight and to separate the powder containing the metal catalyst from the catalyst carrier; A crushing separator having floating means for floating the powder separated from the catalyst carrier by the impact blade to the inner upper portion of the container; And a powder dust collector for sucking and recovering the powder suspended in the inside of the container by the floating means from the first suction port. The method of claim 1, The treatment medium to be crushed further comprises an impact member for crushing the catalyst carrier. The method according to claim 1 or 2, The impact member is a metal catalyst recovery system, characterized in that the inner case for supporting the catalyst carrier inside the catalytic converter. The method according to any one of claims 1 to 3, And the impact blade is arranged at an inner bottom portion of the container, and the first suction port of the dust collector is provided at a higher position than the impact blade inside the container. The method according to any one of claims 1 to 4, And the first suction port is provided with a filter member capable of sucking the powder containing the metal catalyst from at least two different directions. The method according to any one of claims 1 to 5, The container has an impact protrusion therein, the impact protrusion colliding with the catalyst carrier and the impact member. The method according to any one of claims 1 to 6, And said container is mounted in an inclined state. The method according to any one of claims 1 to 7, And the impact blade blows airflow from the lower portion of the end of the impact blade to float the powder containing the metal catalyst inside the container. The method according to any one of claims 1 to 8, After the impact blade is crushed by impacting the catalyst carrier such that the catalyst carrier has a dimension falling by its own weight, the rotational speed of the impact blade is decelerated to facilitate separation of the powder containing the metal catalyst from the catalyst carrier. Metal catalyst recovery system, characterized in that. The method according to any one of claims 1 to 9, The container is provided with a discharge port for discharging the crushed debris of the catalyst carrier and the impact member after the impact crushed by the impact blade, the powder dust collector is connected to the discharge port through a second suction port Metal catalyst recovery system. The method according to any one of claims 1 to 10, And the container has an air discharge port communicateable between the outside and inside of the container. The method according to any one of claims 1 to 11, The first suction port is formed in the upper center portion of the container, The container is formed in a cylindrical shape and has an air blowing port in an upper portion of the container, wherein the air blowing port blows downward along the inner wall of the container to create a vortex inside the container. Catalyst recovery system. The method according to any one of claims 1 to 12, And a filtration machine having a filtration container supplied with the impacted blades to pulverized debris of the treatment medium, vibrating the filtration container to filter the powder downward from the filtration container to separate the powder containing the metal catalyst from the crushed debris. Metal catalyst recovery system, characterized in that. The method according to any one of claims 1 to 13, And the powder dust collector sucks and recovers powder containing a metal catalyst suspended inside the filtration container while being vibrated by the filtration machine.