JP7025015B2 - Separation device and catalyst filling device - Google Patents

Description

The present invention relates to a separation device for separating a first powder and a second powder larger than the first powder, and a catalyst filling device including a separation device.

In petroleum refining equipment, chemical industry equipment, etc., various catalysts are used to promote chemical reactions. The catalyst is formed into, for example, granules, and is filled inside a reaction tower through which a raw material fluid is circulated.
A catalyst filling device is used for filling such a catalyst (Patent Document 1).

The catalyst filling device of Patent Document 1 includes a hopper in which the catalyst is housed, and a spraying device in which the catalyst housed in the hopper is sprayed inside the reaction tower. The catalyst is attached with catalyst powder that is generated in the process before being sent to the hopper or is generated when the catalyst is sent from the hopper to the spraying device. Since the catalyst powder is smaller than the catalyst originally used, it becomes dust and is excluded from those filled inside the reaction tower as a catalyst.
Therefore, in the conventional example of Patent Document 1, a filter unit (separation device) for separating the catalyst powder as dust from the catalyst is arranged between the hopper and the spraying device.
The filter portion has a triple structure including a catalyst tube, an inner tube and an outer tube. The catalyst tube has a large number of communication holes in the peripheral surface covered with the outer tube. The communication hole has a size or shape that does not allow the catalyst to pass through, while it has a size or shape that allows the catalyst powder to pass through. The powder is discharged to the outside through the storage space between the outer tube and the catalyst tube.

Japanese Unexamined Patent Publication No. 2016-147228

In the conventional example of Patent Document 1, since a plurality of communication holes are formed in the peripheral surface portion of the catalyst tube, when the catalyst to which the catalyst powder is attached flows along the peripheral surface portion of the catalyst tube, the communication formed in the peripheral surface portion is formed. The pores may be clogged with catalyst or catalyst powder. In particular, the catalyst or the like has a large flow in the central portion (axis core portion) of the catalyst tube, but the flow is small in the vicinity of the inner peripheral surface, so that the catalyst or the like is likely to be clogged in the communication holes formed on the inner peripheral surface. In order to reduce clogging of the communication holes of the catalyst tube, it is conceivable to distribute the catalyst etc. at high speed, but in that case, not only the catalyst and the catalyst powder cannot be reliably separated, but also the catalyst etc. can be used. A complicated mechanism for forced distribution is required.
In this way, in a configuration in which the catalyst or the like is simply circulated inside the catalyst tube in which the communication hole is formed, the communication hole of the catalyst tube is clogged, and in the clogged place, the catalyst and the catalyst powder are used. Insufficient separation. If the catalyst and the catalyst powder are not separated, the catalyst powder that becomes dust will be mixed in the catalyst sent to the spraying device, and there is a problem that pure catalyst cannot be filled.
Here, the problem that the separation between the catalyst and the catalyst powder becomes insufficient due to the clogging of the communication holes of the catalyst tube also arises in the separation of powders having different sizes.

An object of the present invention is to provide a separation device and a catalyst filling device capable of reliably separating a first powder and a second powder having different sizes.

The separation device of the present invention includes a powder flow tube in which a first powder and a second powder larger than the first powder coexist and flow, and an inner tube arranged inside the powder flow tube. The powder flow tube is provided with an outer tube arranged outside the powder flow tube, and the powder flow tube is formed with a plurality of communication holes through which the first powder can pass and the second powder cannot pass through. The inner pipe has a peripheral surface portion, and the inner pipe is a wall formed with a plurality of fluid supply holes for supplying a fluid for discharging the first powder from the communication hole to the space between the powder flow pipe and the powder flow pipe. The outer tube has a storage space for storing the first powder discharged from the communication hole between the outer tube and the powder flow tube, and the peripheral surface portion of the powder flow tube and the said. At least one of the wall portion of the inner pipe is provided with a vortex generation portion that generates a vortex in the flow of the mixture of the first powder and the second powder, and the fluid supply hole is provided with the vortex generation portion. It is characterized in that it is arranged so as to face the position where the eddy current is generated in the portion.

In the present invention, when a mixture of the first powder and the second powder flows inside the powder flow pipe along the axial direction of the powder flow pipe, it hits the vortex generation portion and a vortex is generated. When a vortex flow is generated in the flow of the mixture, the first powder, which is smaller than the second powder, stays in a turbulent state.
The fluid flowing inside the inner pipe is sent to the inside of the powder flow pipe through the fluid supply hole. Since the fluid supply hole is arranged to face the position where the vortex flow is generated in the vortex flow generation portion, the first powder staying in the vortex flow state is pushed out toward the communication hole. Then, the first powder is efficiently discharged into the storage space between the outer pipe and the powder flow pipe through the communication hole. On the other hand, the second powder itself cannot pass through the communication hole even if it is pushed out by the fluid, so that it continues to flow inside the powder flow pipe along the axial direction.
Therefore, on at least one of the peripheral surface portion of the powder flow tube and the wall portion of the inner tube, a vortex flow generating portion that generates a vortex flow in the flow of the mixture of the first powder and the second powder is provided, and the inner tube is provided. Since the fluid supply hole and the position where the vortex flow is generated are arranged so as to face each other, the first powder which is turbulent due to the vortex generation part and stays in the vicinity of the vortex generation part is supplied by the fluid. The fluid sent from the holes is pushed toward the communication holes, and the first powder is efficiently discharged into the storage space. On the other hand, since the second powder itself continues to flow inside the powder flow pipe, the first powder and the second powder are surely separated. Moreover, the structure is simple.

In the separation device of the present invention, the first powder is a catalyst powder, the second powder is a catalyst, and the powder flow tube is a catalyst tube in which the catalyst powder and the catalyst are mixed and distributed. May be configured.
In this configuration, the fluid sent from the fluid supply hole pushes the catalyst powder that has become turbulent due to the vortex generation part and stays in the vicinity of the vortex generation part toward the communication hole, and the catalyst powder is efficiently stored. It is discharged to the outside as dust in the space. On the other hand, since the catalyst itself continues to circulate inside the catalyst tube, the catalyst powder and the catalyst are surely separated. Therefore, the catalyst and the catalyst powder can be reliably separated.

In the separation device of the present invention, the powder flow tube may be configured to include a phloem tube for classifying the first powder and the second powder.
In this configuration, by using a plurality of phloem tubes having different sizes of communication holes, it is possible to realize classification of powders of various sizes with a simple structure.

In the separation device of the present invention, the vortex generating portion has fins whose base ends are fixed to one of the peripheral surface portion of the powder flow pipe and the wall portion of the inner pipe, and the tip of the fin is the tip of the fin. It is preferable that the mixture is oriented toward the downstream side in the distribution direction and has a gap between the peripheral surface portion of the powder flow pipe and the other side of the wall portion of the inner pipe.
In this configuration, when the mixture hits the fins constituting the vortex generating portion, the mixture flows from the proximal end side to the distal end side of the surface of the fin. After that, the mixture, particularly the first powder smaller than the second powder, turbulently flows near the tip of the fin due to the vortex flow generated from the tip of the fin to the back surface side of the fin. The first powder in the turbulent flow state stays on the back surface side of the fin and is pushed out toward the communication hole by the fluid sent from the fluid supply hole of the inner pipe. Since the catalyst itself continues to flow inside the catalyst tube, the catalyst powder and the catalyst are surely separated.
Therefore, since the eddy current generating portion has a structure provided with fins, the structure of the eddy current generating portion can be simplified.

In the separation device of the present invention, the fins are preferably formed in an annular shape centered on one axis of the powder flow tube and the inner tube to which the base end is fixed.
In this configuration, since the fins are formed in an annular shape, there is no portion where the fins are missing, so that a vortex flow of the mixture due to the fins can be reliably generated.
Therefore, not only the structure of the fins can be simplified, but also the first powder and the second powder can be efficiently separated.

In the separation device of the present invention, it is preferable that the base end of the fin is fixed to the peripheral surface portion of the powder flow tube.
In this configuration, the first powder turbulent at the tip of the fin stays in the space between the back side of the fin and the peripheral surface of the powder flow tube, and the first powder staying in this space is fluid. Can be pushed out more reliably.
Therefore, since the portion where the first powder wraps around from the tip of the fin is close to the communication hole, the first powder and the second powder can be efficiently separated.

In the separation device of the present invention, a suction device for sucking the first powder stored in the storage space is connected to the outer pipe, which is preferable.
In this configuration, the first powder stored in the storage space is sucked by the suction device, which creates a negative pressure in the storage space and forcibly sends the catalyst powder inside the powder flow tube to the storage space. be able to.
Therefore, by forcibly sending the first powder to the storage space, it is possible to more reliably separate the first powder and the second powder.

The catalyst filling device of the present invention is a device for filling the inside of a reaction tower with a catalyst, and is a hopper in which the catalyst powder and the catalyst are mixed and stored, and the catalyst powder stored in the hopper. It is characterized by comprising the separation device according to claim 2 for separating the catalyst and a spraying device for spraying the catalyst separated by the separation device inside the reaction tower.
In the present invention, since the catalyst powder stored in the hopper and the catalyst are surely separated by the separation device, the catalyst powder is removed from the catalyst sprayed inside the reaction tower by the spraying device, and the purity is increased. High catalyst is filled.

The schematic which shows the outline of the catalyst filling apparatus which concerns on 1st Embodiment of this invention. Sectional drawing of the catalyst filling device. Sectional drawing of the separation apparatus which concerns on 1st Embodiment of this invention. FIG. 3 is a cross-sectional view taken along the line IV-IV of FIG. Sectional drawing of the separation apparatus which concerns on 2nd Embodiment of this invention. FIG. 5 is a cross-sectional view taken along the line VI-VI of FIG. Sectional drawing of the separation apparatus which concerns on 3rd Embodiment of this invention. Sectional drawing of the separation apparatus which concerns on 4th Embodiment of this invention. (A) is a cross-sectional view taken along the line AA of FIG. 8, and (B) is a cross-sectional view taken along the line BB of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
The first embodiment will be described with reference to FIGS. 1 to 4.
In FIG. 1, the reaction tower 1 is filled with the catalyst 2 inside. When the catalyst 2 is filled in the reaction tower 1, the catalyst filling device 3 is introduced from the upper opening of the reaction tower 1 to the inside.
In FIG. 2, the catalyst filling device 3 has a supply device 10 extending vertically and a spraying device 40 installed at the lower end of the supply device 10.
[Supply device 10]
The supply device 10 includes a hopper 11, a separation device 20, and a pinch valve 30 in this order from top to bottom.
The hopper 11 is arranged outside the upper opening of the reaction tower 1, and stores a mixture 2B in which a predetermined amount of the catalyst 2 and the catalyst powder 2A are mixed, and the mixture is stored from the lower end thereof to the separation device 20. 2B can be supplied. The catalyst powder 2A is generated during transportation before being stored in the hopper 11 or when the catalyst powder 2 is sent from the hopper 11 to the separating device 20 by rubbing against each other. The catalyst powder 2A is dust smaller and lighter than the catalyst 2, and is excluded from the target to be filled in the reaction column 1. In the present embodiment, the catalyst powder 2A is the first powder, and the catalyst 2 is the second powder larger than the catalyst powder 2A.

[Separator 20]
The separation device 20 has a triple structure including a catalyst tube 21 as a powder flow tube, an inner tube 22 arranged inside the catalyst tube 21, and an outer tube 23 arranged outside the catalyst tube 21. ing.
The inner tube 22 is concentrically arranged inside the catalyst tube 21, and a space 21A is provided between the inner tube 22 and the catalyst tube 21.
The outer tube 23 is arranged concentrically on the outside of the catalyst tube 21, and a storage space 23A is provided between the outer tube 23 and the catalyst tube 21.
The upper end of the catalyst tube 21 is connected to the catalyst outlet of the hopper 11 and the lower end is connected to the catalyst inlet of the pinch valve 30. Therefore, the catalyst 2 supplied from the hopper 11 to the pinch valve 30 is passed through the inside of the catalyst tube 21.

A dust removing air supply pipe 24 is connected to the upper end of the inner pipe 22.
The dust removing air supply pipe 24 introduces pressurized air from an external dust removing air supply source (not shown) to the upper end of the inner pipe 22. The dust-removed air supplied to the inner pipe 22 is introduced into the catalyst pipe 21 from the fluid supply hole 221 and passes between the catalysts 2 in the catalyst pipe 21 to enter the storage space outside the catalyst pipe 21 from the communication hole 211. It is discharged to 23A.
When the dust-removing air passes through the gap of the catalyst 2 in the catalyst tube 21, the catalyst powder 2A adhering to the catalyst 2 or the catalyst powder 2A generated from the catalyst 2 is taken in, and the communication hole 211 is taken in together with the catalyst powder 2A. It is sent out to the storage space 23A through the storage space 23A.
Therefore, the catalyst 2 passing through the catalyst tube 21 is sent out to the pinch valve 30 in a clean state in which the catalyst powder 2A is removed by the dust removing air.

The outer pipe 23 is a pipe body having airtightness over the entire length.
A dust removing air discharge pipe 25 is connected to the outer pipe 23 at the lower end, and a dust removing cyclone 26 is connected to the dust removing air discharge pipe 25.
The dust removing air discharge pipe 25 collects the dust removing air sent from the catalyst pipe 21 to the inside of the outer pipe 23 and discharges it to the cyclone 26.
In the present embodiment, a suction device for sucking the catalyst powder 2A stored in the storage space 23A from the dust removing air discharge pipe 25 and the cyclone 26 is configured.
Therefore, the catalyst powder taken in by the dust-removed air in the catalyst tube 21 is collected by the cyclone 26 and can be collectively discarded. On the other hand, the conveyed air that has passed through the cyclone 26 is released to the atmosphere after being in a clean state that does not contain the catalyst powder 2A.

3 and 4 show a detailed configuration of the separating device 20.
In FIGS. 3 and 4, the catalyst tube 21 includes a tubular peripheral surface portion 21B covered with an outer tube 23. The peripheral surface portion 21B has a large number of communication holes 211, and can be ventilated on the inner surface side and the outer surface side thereof. However, the communication hole 211 has a size or shape that does not allow the catalyst 2 to pass through, but allows the catalyst powder 2A that is smaller than the catalyst 2 to pass through.
The communication hole 211 of the catalyst tube 21 may be formed by drilling a large number of holes in the material of the catalyst tube 21, or the catalyst tube 21 may be formed of a mesh material and the lattice spacing thereof may be set as the communication hole 211.

The inner tube 22 includes a wall portion 22C having a tubular portion 22A covered with the catalyst tube 21 and an end surface portion 22B (see FIG. 2) provided at the end portion of the tubular portion 22A on the pinch valve 30 side.
The tubular portion 22A has a plurality of fluid supply holes 221 and can be ventilated on the inner surface side and the outer surface side thereof.
The fluid supply hole 221 is formed by drilling a large number of holes in the material of the inner pipe 22.
A plurality of fluid supply holes 221 correspond to the positions where the vortex flow generating portions 8 described later are provided, and a plurality of fluid supply holes 221 are arranged at equal intervals with each other along the circumferential direction of the inner pipe 22.
The shaft core of the fluid supply hole 221 coincides with the shaft core of some of the communication holes 211 among the plurality of communication holes 211.

A vortex generation section 8 for generating a vortex flow P of a mixture 2B of the catalyst powder 2A and the catalyst 2 is provided on the inner peripheral portion of the catalyst tube 21.
The vortex generating portion 8 has fins 80 whose proximal ends are fixed to the peripheral surface portion 21B of the catalyst tube 21.
The tip of the fin 80 faces the downstream side in the distribution direction of the mixture 2B of the catalyst powder 2A and the catalyst 2. That is, the fin 80 is inclined downward from the base end to the tip end.
A gap S is formed between the tip of the fin 80 and the inner pipe 22 for the mixture 2B to flow.
In the first embodiment, the fin 80 is formed in an annular shape centered on the axis of the catalyst tube 21. The dimensions between the tip of the fin 80 and the peripheral surface portion 21B of the catalyst tube 21 are the same along the circumferential direction of the catalyst tube 21.
In the mixture 2B composed of the catalyst 2 and the catalyst powder 2A sent from the upstream side, particularly the catalyst powder 2A, a vortex P is generated immediately after passing through the tip of the fin 80. The fluid supply hole 221 is arranged so as to face the position where the vortex flow P is generated in the fin 80 and the catalyst powder 2A convects.
The fins 80 are formed in a plurality of stages (three stages in FIG. 3) along the axial direction of the catalyst tube 21, and a fluid supply hole 221 is formed in the inner tube 22 corresponding to these fins 80.

[Pinch valve 30]
In FIG. 2, the pinch valve 30 is a mechanism for switching between a state in which the catalyst 2 is passed from the separation device 20 to the spraying device 40 and a state in which the catalyst 2 is cut off. Specifically, the pinch valve 30 includes a pair of balloons 32 arranged to face each other on the inner surface of the valve portion cylinder 31, and an expansion air supply pipe 33 that supplies expansion air to the balloons 32.
In such a pinch valve 30, by supplying the expanded air from the expanded air supply pipe 33, the pair of balloons 32 are inflated (the state of the solid line in FIG. 2), and the passage in the valve portion cylinder 31 is closed. The passage of the catalyst 2 is blocked. On the other hand, by releasing the expanded air to the atmosphere, the pair of balloons 32 are in a contracted state (the state of the alternate long and short dash line in FIG. 2), the passage is opened again, and the catalyst 2 can pass through.

[Spraying device 40]
In FIG. 1, the spraying device 40 is connected to the lower part of the feeding device 10 and rotationally sprays the catalyst 2 supplied from the feeding device 10 into the reaction tower 1.
Specifically, as shown in FIG. 2, the spraying device 40 includes a rotor 50 for spraying, a drive unit 60 for rotating the rotor 50, and an air transporting means 70 for air-conveying the catalyst 2 sprayed from the rotor 50. And have. The rotor 50 has a shaft portion 51 arranged concentrically with the supply device 10 and a bottom plate 52 fixed to the lower end of the shaft portion 51. On the upper surface of the bottom plate 52, a large number of partition plates 53 extending from the center toward the outer circumference are erected.

The drive unit 60 includes a drive unit cylinder 61, an air motor 62 installed inside the drive unit body 61, and a tachometer 63.
The drive unit cylinder 61 is connected to the lower end of the valve unit cylinder 31 of the pinch valve 30.
The air motor 62 is supported at the center position of the drive unit cylinder 61, and the shaft portion 51 of the rotor 50 is connected to the main shaft (not shown) thereof.
The spindle of the air motor 62 is rotated by the drive air supplied from the outside, whereby the rotor 50 can be rotated.
The tachometer 63 is attached to the air motor 62, can detect the rotation speed of the spindle of the air motor 62, and can output a signal to an external control device or the like.

The air transport means 70 is installed between the drive unit 60 and the rotor 50, and air transports the catalyst 2 supplied from the supply device 10 through the drive unit 60 to the rotor 50.
Specifically, the air transport means 70 includes a cylinder portion 71 connected to the lower end of the drive unit 60, a transport air supply pipe 72 that supplies the transport air 7 to the cylinder portion 71, and a flow rate or the flow rate of the transport air to be supplied. A throttle mechanism 73 for adjusting the pressure and a rotor cover 74 for maintaining an air flow along the upper surface of the rotor 50 are provided.
The cylinder portion 71 includes an upper cylinder 711 and a lower cylinder 712 extending downward from the upper cylinder 711. The upper cylinder 711 is connected to the lower end of the drive unit cylinder 61, and the catalyst 2 supplied from the supply device 10 is sent into the upper cylinder 711. The lower cylinder 712 has a step at the upper portion, and a large diameter portion 713 is connected to this step. The lower cylinder 712 has substantially the same diameter as the upper cylinder 711, and the large diameter portion 713 has a larger diameter than the upper cylinder 711. The upper cylinder 711 is inserted into the large diameter portion 713 from above, and a space is secured between the inner surface of the large diameter portion 713 and the outer surface of the upper cylinder 711.

The transport air supply pipe 72 is connected to a large diameter portion of the lower cylinder 712, and supplies the transport air 7 to the inside thereof (outside of the upper cylinder 711).
Therefore, in the small diameter portion of the lower cylinder 712, the catalyst 2 is dispersed by the transport air 7 and air is transported to the lower rotor 50. At this time, the state of air transport can be changed by adjusting the interval of the slits 733 with the throttle mechanism 73.
A rotor cover 74 is fixed to the lower end of the lower cylinder 712.
The rotor cover 74 has a circular planar shape, and its diameter is set according to the maximum diameter of the rotor 50.

[Catalyst filling method]
A mixture 2B composed of the catalyst 2 and the catalyst powder 2A is stored in the hopper 11.
The mixture 2B stored in the hopper 11 is sent to the separation device 20, and the catalyst powder 2A is separated from the catalyst 2 constituting the mixture 2B by the separation device 20.
That is, the mixture 2B sent from the hopper 11 flows downward in the space 21A between the catalyst tube 21 and the inner tube 22.
Of the mixture 2B flowing inside the catalyst tube 21, the mixture 2B flowing through the portion close to the outer tube 23 hits the fin 80 and flows along the upper surface (surface) of the fin 80 from the proximal end side to the tip end side. In the mixture 2B, a vortex P is generated immediately after leaving the tip of the fin 80. The vortex flow P causes the catalyst powder 2A, which is smaller than the catalyst 2 in the mixture 2B, to turbulently flow. Along with the vortex P, the catalyst powder 2A enters and stays in the triangular cross-section region Q formed between the lower surface (back surface) of the fin 80 and the inner peripheral surface of the catalyst tube 21.

Here, when dust-proof air is sent to the inside of the inner pipe 22, the dust-proof air pushes the catalyst powder 2A staying on the back surface side of the fin 80 toward the communication hole 211 by the vortex flow P through the fluid supply hole 221. Therefore, the catalyst powder 2A is stored in the storage space 23A through the communication hole 211 together with the dustproof air. The catalyst powder 2A stored in the storage space 23A is sucked by the dust removing air discharge pipe 25 and the cyclone 26.
When the storage space 23A is sucked by the dust removing air discharge pipe 25 and the cyclone 26, a negative pressure is generated in the space 21A between the catalyst pipe 21 and the inner pipe 22, and the catalyst powder 2A in the space 21A is forcibly communicated. It is sent to the storage space 23A through the hole 211. Since the catalyst 2 larger than the catalyst powder 2A does not pass through the communication hole 211, it is sent to the downstream side. The catalyst 2 separated from the catalyst powder 2A by the separation device 20 is sprayed on the reaction column 1 by the spraying device 40.

[Action and effect of the embodiment]
In the present embodiment as described above, the following effects can be obtained.
(1) A vortex flow generating portion 8 for generating a vortex flow P in the flow of the mixture 2B of the first powder and the second powder is provided on the peripheral surface portion 21B of the powder flow pipe, and the fluid supply hole 221 of the inner pipe 22 is provided. Is arranged opposite to the position where the vortex flow P is generated in the vortex flow generation unit 8, so that the dustproof air sent from the fluid supply hole 221 to the first powder staying in the turbulent flow state by the vortex flow generation unit 8 is the communication hole 211. The catalyst powder 2A is efficiently discharged into the storage space 23A. On the other hand, since the second powder continues to flow in the space between the inner pipe 22 and the powder flow pipe, it is surely separated from the second powder. Moreover, since the eddy current generating portion 8 is only provided in the powder flow pipe, the structure is simple.
(2) Since the first powder is the catalyst powder 2A, the second powder is the catalyst 2, and the powder flow tube is the catalyst tube 21, the catalyst powder 2A can be efficiently discharged to the storage space 23A. Therefore, the catalyst powder 2A, which is dust, and the catalyst 2 can be reliably separated.

(3) The vortex generation portion 8 has fins 80 whose tips are directed to the downstream side in the distribution direction of the mixture 2B, and the mixture 2B is formed between the tips of the fins 80 and the wall portion 22C of the inner pipe 22. Since there is a flow gap S, when the mixture 2B hits the fin 80, the catalyst powder 2A wraps around from the tip of the fin 80 to the back surface to generate a vortex P. The catalyst powder 2A turbulent due to the vortex flow P is surely sent out to the storage space 23A by the dustproof air, and is surely separated from the catalyst 2. Therefore, the vortex flow P can be reliably generated and the configuration of the vortex flow generation unit 8 can be simplified.

(4) Since the fin 80 is formed in an annular shape centered on the axis of the catalyst tube 21, there is no portion where the fin 80 is missing along the circumferential direction, and the vortex flow of the mixture 2B by the fin 80 is surely performed. Can be generated.

(5) Since the base end of the fin 80 is fixed to the peripheral surface portion 21B of the catalyst tube 21, the portion of the catalyst powder 2A that wraps around from the tip of the fin 80 is close to the communication hole 211. The 2A and the catalyst 2 can be efficiently separated.

(6) Since the dust removing air discharge pipe 25 for sucking the catalyst powder 2A stored in the storage space 23A and the cyclone 26 are connected to the outer pipe 23, a negative pressure is generated in the storage space 23A and the inside of the catalyst pipe 21 is generated. The catalyst powder 2A in the above can be forcibly sent out to the storage space 23A, and from this point as well, the catalyst powder 2A and the catalyst 2 can be separated more reliably.

(7) The hopper 11 in which the catalyst powder 2A and the catalyst 2 are mixed and stored, the separation device 20 for separating the catalyst powder 2A and the catalyst 2 stored in the hopper 11, and the separation device 20 are separated. Since the catalyst filling device 3 is provided with the spraying device 40 for spraying the catalyst 2 inside the reaction tower 1, the catalyst powder 2A and the catalyst 2 are surely separated by the separation device 20, so that the spraying device 40 The purity of the catalyst 2 sprayed inside the reaction tower 1 becomes high.

(8) Since the fins 80 are formed in a plurality of stages along the axial direction of the catalyst tube 21, even if the catalyst powder 2A cannot be sufficiently separated from the catalyst 2 by using the fins 80 in the first stage, they are arranged on the downstream side. The second-stage and third-stage fins 80 make it possible to reliably separate the catalyst powder 2A from the catalyst 2.

[Second Embodiment]
Next, a second embodiment of the separation device of the present invention will be described with reference to FIGS. 5 and 6.
The second embodiment is different from the first embodiment in that the fin 81 has a different configuration from the fin 80 of the first embodiment, and other configurations are the same as those of the first embodiment.
In the description of the second embodiment, the same configurations as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

In FIGS. 5 and 6, the vortex generating portion 8 is configured to include a plurality of fins 81 arranged along the inner circumference of the peripheral surface portion 21B of the catalyst tube 21.
The base end of the fin 81, which constitutes the base of the planar triangle, is fixed to the peripheral surface portion 21B, and the tip of the fin 81, which constitutes the apex angle of the planar triangle, is inclined downward toward the inner pipe 22. A gap S is provided between the tip of the fin 80 and the inner tube 22. In the present embodiment, the planar shape of the fin 81 is not limited to a triangle, but may be a rectangular shape.
The fins 81 are formed in a plurality of stages (three stages in FIG. 5) along the axial direction of the catalyst tube 21, and a fluid supply hole 221 is formed in the inner tube 22 corresponding to these fins 80.
In addition, in FIG. 6, the arrangement position of the fins 81 is the same position where a plurality of stages overlap in a plan view, but in the present embodiment, the fins 81 provided in each stage are shifted in the circumferential direction so as not to overlap. It may be a thing.
In the second embodiment, the same effects as those in (1) to (3) (5) to (8) of the first embodiment can be obtained.

[Third Embodiment]
Next, a third embodiment of the separation device of the present invention will be described with reference to FIG. 7.
The third embodiment is different from the first embodiment in that the fin 82 has a different configuration from the fin 80 of the first embodiment, and the other configurations are the same as those of the first embodiment.
In the description of the third embodiment, the same configurations as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

In FIG. 7, the vortex generating portion 8 is composed of an annular fin 82 whose base end is fixed to the tubular portion 22A of the inner pipe 22 and whose tip is inclined downward toward the catalyst pipe 21. A gap S is formed between the tip of the fin 82 and the catalyst tube 21 for the mixture 2B to flow.
In the third embodiment, the same effects as those in (1) to (4) (6) to (8) of the first embodiment can be obtained.

[Fourth Embodiment]
Next, a fourth embodiment of the separation device of the present invention will be described with reference to FIGS. 8 and 9.
In the fourth embodiment, the target of the powder to be separated and the structure of the powder flow tube are different from those of the first embodiment, and other configurations are the same as those of the first embodiment.
In the description of the fourth embodiment, the same configurations as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

In FIGS. 8 and 9, the separation device 90 is a classifying device for classifying the first powder 201 and the second powder 202 having different sizes, and is a phloem tube 91 as a powder flow tube and a phloem tube 91. It has a triple structure consisting of an inner tube 22 arranged inside and an outer tube 23 arranged outside the phloem tube 91.
The upper end of the outer tube 23 is joined to the plate portion 92, and the sieve tube 91 is arranged so as to penetrate the plate portion 92.
The lower ends of the sieve tube 91, the inner tube 22 and the outer tube 23 are joined to the plate portion 93.
The plate portions 92 and 93 are provided with a holding portion 94 for holding the inner pipe 22 and the sieve pipe 91, and the plate portion 93 is for holding the inner pipe 22 and the sieve pipe 91 concentrically. A spacer 95 is provided.

The first powder 201 and the second powder 202 include, for example, powders used in the metal field such as aluminum powder, zinc powder, and alloy powder, and in the chemical field such as carbon powder, activated charcoal, resin powder, and resin beads. There are powders used, powders used in the ceramic industry such as alumina and clay, powders used in the food field such as salt, fine sugar and granulated sugar, and powders used in other fields. In the present embodiment, unlike the first to third embodiments, the target of the powder to be separated is not limited.

The upper end of the sieve tube 91 arranged above the plate portion 92 is connected to the catalyst outlet of a hopper (not shown), and the lower end is connected to the powder discharge tube 96. The plate portion 93 is formed with a hole portion 93A that communicates the powder discharge pipe 96 and the sieve pipe 91.
A pinch valve (not shown) is connected to the lower end of the powder discharge pipe 96. The pinch valve may have the same configuration as the pinch valve 30 of the first embodiment. A second powder storage tank (not shown) for storing the second powder 202 separated from the first powder 201 is connected to the pinch valve.

The sieve tube 91 includes a tubular peripheral surface portion 21B covered with an outer tube 23. The peripheral surface portion 21B has a large number of communication holes 211. Each of these communication holes 211 has a size specified for classifying the powder, the powder passing through the communication holes 211 is the first powder 201, and the powder that cannot pass is the second. It is powder 202.
It is also possible to use a plurality of types of sieve tubes 91 having different sizes of the communication holes 211 depending on the size to be classified.
A mixture 203 of the first powder 201 and the second powder 202 is circulated from above in the space between the sieve tube 91 and the inner tube 22, and the inside of the sieve tube 91 is from above. A vortex generating section 8 for generating a vortex P is provided in the mixture 203 that flows downward.
One end of the dust removing air discharge pipe 25 is connected to the outer periphery of the lower end portion of the outer pipe 23. A first powder storage tank (not shown) is connected to the other end of the dust removing air discharge pipe 25. That is, the first powder 201 stored in the outer pipe 23 is stored in the first powder storage tank through the dust removing air discharge pipe 25.

In the fourth embodiment, the same effects as those of (1), (3) to (6) and (8) of the first embodiment can be obtained, and the following effects can be obtained.
(9) Since the powder flow tube includes a sieve tube 91 for classifying the first powder 201 and the second powder 202, it is possible to use a plurality of sieve tubes 91 having different sizes of the communication holes 211. , It is possible to classify powders of various sizes with a simple structure.

[Modification example]
The present invention is not limited to the above-described embodiment, and modifications within the range in which the object of the present invention can be achieved are included in the present invention.
In each of the above embodiments, the fluid for discharging the catalyst powder 2A and the first powder 201 from the communication hole 211 is dust-removed air, but in the present invention, the catalyst powder 2A and the first powder 201 are stored in the storage space 23A. The composition of the fluid for extruding is not limited, and nitrogen may be used instead of the dust-removing air.

Further, in the first to third embodiments, the outer pipe 23 is provided with a dust removing air discharge pipe 25 and a cyclone 26 for sucking the catalyst powder 2A stored in the storage space 23A as a suction device, but in the present invention, suction is provided. The device may be omitted. Further, the opening / closing of the supply device 10 is not limited to the pinch valve 30, and may be another valve mechanism or the like. For example, a pinch valve 30 can be substituted if the flow of the catalyst 2 in the valve portion cylinder 31 can be blocked or restricted, such as a ball valve or a shutter.

Further, in the present invention, the fins 80, 81, 82 are composed of a plurality of stages, but in the present invention, the number of stages is not limited, and for example, the fins 80, 81, 82 may be composed of one stage.
Further, in the first to third embodiments, the separation device 20 may be used separately from the catalyst filling device 3.

The separation device of the present invention can be used for manufacturing in the fields of metals, chemistry, and food, and for filling reaction towers of petroleum refining equipment, chemical industry equipment, and the like with catalysts.

1 ... Reaction tower, 10 ... Supply device, 11 ... Hopper, 2 ... Catalyst (second powder), 2A ... Catalyst powder (first powder), 2B ... Mixture, 201 ... First powder, 202 ... No. Two powders, 203 ... mixture, 3 ... catalyst filling device, 20, 90 ... separation device, 21 ... catalyst tube, 21A ... space, 21B ... peripheral surface, 211 ... communication hole, 22 ... inner tube, 221 ... fluid supply Hole, 22A ... Cylindrical part, 22C ... Wall part, 23 ... Outer pipe, 23A ... Storage space, 25 ... Dust removal air discharge pipe (suction device), 26 ... Cyclone (suction device), 8 ... Swirl flow generation part, 80, 81, 82 ... fins, 91 ... sieve tube, P ... vortex, Q ... region, S ... gap

Claims (8)

A powder flow pipe in which a first powder and a second powder larger than the first powder are mixed and circulated, an inner pipe arranged inside the powder flow pipe, and the powder flow pipe. Equipped with an outer tube placed outside,
The powder flow tube has a peripheral surface portion having a plurality of communication holes through which the first powder can pass and the second powder cannot pass through.
The inner pipe has a wall portion in which a plurality of fluid supply holes for supplying a fluid for discharging the first powder from the communication hole to the space between the inner pipe and the powder flow pipe are formed.
The outer pipe has a storage space for storing the first powder discharged from the communication hole between the outer pipe and the powder flow pipe.
At least one of the peripheral surface portion of the powder flow tube and the wall portion of the inner tube is provided with a vortex flow generating portion that generates a vortex in the flow of the mixture of the first powder and the second powder. ,
The separation device is characterized in that the fluid supply hole is arranged so as to face the position where the vortex flow is generated in the vortex flow generation portion. In the separation device according to claim 1,
The first powder is a catalyst powder, the second powder is a catalyst, and
The separation device is characterized in that the powder flow tube includes a catalyst tube in which the catalyst powder and the catalyst are mixed and distributed. In the separation device according to claim 1,
The powder flow tube is a separation device including a phloem tube for classifying the first powder and the second powder. In the separation device according to any one of claims 1 to 3.
The vortex generating portion has fins whose proximal ends are fixed to one of the peripheral surface portion of the powder flow pipe and the wall portion of the inner pipe.
The tip of the fin faces the downstream side in the flow direction of the mixture, and there is a gap between the peripheral surface portion of the powder flow tube and the wall portion of the inner tube. A separation device characterized by. In the separation device according to claim 4,
The fin is a separation device characterized in that the fin is formed in an annular shape centered on one axis of the powder flow tube and the inner tube to which the base end is fixed. In the separation device according to claim 5,
A separation device characterized in that the base end of the fin is fixed to the peripheral surface portion of the powder flow tube. In the separation device according to any one of claims 1 to 6.
A separation device characterized in that a suction device for sucking the first powder stored in the storage space is connected to the outer pipe. A device that fills the inside of the reaction column with a catalyst.
The separation device according to claim 2, which separates the catalyst powder and the catalyst stored in a hopper in which the catalyst powder and the catalyst are mixed, and the catalyst powder and the catalyst stored in the hopper, are separated by the separation device. A catalyst filling device comprising a spraying device for spraying the catalyst to the inside of the reaction tower.

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