JP2003284960A - Device and system for uniformly carrying catalyst - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress the dispersion of impregnation concentrations to be small by uniformly impregnating a catalyst solution to a catalyst carrier. <P>SOLUTION: A device has a cylindrical rotary barrel 2 which is filled with the catalyst carrier P, and a catalyst supply pipe 3 penetrating through the rotary barrel 2 and for supplying the catalyst solution R inside thereof. The rotary barrel 2 is rotatably and roughly horizontally supported around the catalyst supply pipe 3. The catalyst supply pipe 3 has a plurality of splay nozzles 5 being directed in a roughly vertical and downward direction, which are spaced at regular intervals in the longitudinal direction. On the inner peripheral wall face 2b of the rotary barrel 2, a weir 4 extending in the radial direction is provided along the axial direction of the rotary barrel 2. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a catalyst uniform supporting apparatus used in a catalyst solution supporting step when manufacturing a catalyst such as a deodorizing catalyst, an organic synthesis catalyst, and a water treatment catalyst, and a catalyst provided with the catalyst uniform supporting apparatus. The present invention relates to a uniform carrier system.

[0002]

2. Description of the Related Art Conventionally, an example of the above-mentioned catalyst uniform supporting device is shown in FIG.

As shown schematically in FIG. 5 (a), this catalyst uniform supporting device 51 has a horizontal angle of 15 to 20 °.
The rotating shaft 53 supported by the base 52 in an inclined state
And the barrel-shaped rotary barrel 5 that rotates around the rotary shaft 53.
4 is provided, and when the catalyst carrier is impregnated with the catalyst solution, the rotary barrel 54 filled with the catalyst carrier p is attached to the rotary shaft 5.
The catalyst solution r was injected into the rotating barrel 54 while rotating it about three times.

[0004]

However, in the above-mentioned conventional catalyst uniform supporting device 51, as shown in FIG. 5B, the catalyst solution r injected into the rotary barrel 54 is accumulated in one place of the rotary barrel 54. At this time, Fig. 5
As shown in (c), the positions of the catalyst carrier p at the A position, the catalyst carrier p at the B position, and the catalyst carrier p at the C position in the rotational axis 53 direction of the catalyst carrier p are determined by the rotation of the rotary barrel 54. Since there is almost no change, there is a possibility that a catalyst carrier p that is sufficiently impregnated with the catalyst solution r and a catalyst carrier p that is not so impregnated, that is, the impregnation concentration of the catalyst solution r may become non-uniform. Therefore, it has been a conventional problem to solve this problem.

[0005]

SUMMARY OF THE INVENTION The present invention has been made by paying attention to the above-mentioned conventional problems, and it is possible to impregnate a catalyst carrier with a catalyst solution almost uniformly, and as a result, variation in impregnation concentration is reduced. An object of the present invention is to provide a catalyst uniform supporting device that can be suppressed and a catalyst uniform supporting system including the catalyst uniform supporting device.

[0006]

According to a first aspect of the present invention, there is provided a catalyst carrier for uniformly supporting a catalyst, a cylindrical rotary barrel filled with a catalyst carrier, and a catalyst solution penetrating the rotary barrel and containing a catalyst solution therein. A catalyst uniform supporting device comprising a catalyst supply pipe for supplying, wherein the rotary barrel is rotatably and substantially horizontally supported around the catalyst supply pipe, and the catalyst supply pipe has a constant lengthwise direction. It has a plurality of substantially vertically downward spray nozzles installed at intervals, and a weir extending in the radial direction is provided on the inner peripheral wall surface of the rotary barrel along the axial direction of the rotary barrel. This is characterized in that the structure of the catalyst uniform supporting device is a means for solving the above-mentioned conventional problems.

According to a second aspect of the present invention, there is provided a uniform catalyst carrier according to the present invention, wherein the weir has an extension dimension of 0.8 times or less that of the smallest catalyst carrier among the catalyst carriers. According to a third aspect of the present invention, there is provided a catalyst uniform supporting device according to claim 3, wherein the spray angle of the catalyst solution by the spray nozzle is θ and the catalyst carrier is 1/4 or less of the inner diameter of the rotary barrel in a cross section perpendicular to the rotary axis of the rotary barrel. When the surface width dimension of the catalyst carrier assembly when filled up to the height is L and the spray width dimension of the catalyst solution with respect to the surface of the catalyst carrier assembly is X, the spray angle θ is 0. 85L ≦ X ≦
According to a fourth aspect of the present invention, there is provided a uniform catalyst carrier according to the present invention, wherein the spray angle θ of the catalyst solution by the spray nozzle is θ. ≦ 2 × tan ⁻¹ (9.3)
Has a configuration that satisfies the ^1/2 / 10) of the relationship.

According to a fifth aspect of the present invention, there is provided a uniform catalyst supporting device, wherein a plurality of spray nozzles have an overlapping width of spray ranges of spray nozzles adjacent to each other in the longitudinal direction of the catalyst supply pipe which is 5 to the inner diameter of the rotary barrel. The catalyst uniform supporting apparatus according to the present invention has a structure in which the spray nozzles are arranged at a pitch of 15%, and the spray nozzles located at both ends of the plurality of spray nozzles have a pitch from the end of the rotary barrel. Of 1 /
According to a seventh aspect of the present invention, there is provided a uniform catalyst supporting device according to the present invention, wherein at least one of the ends of the rotary barrel has a funnel shape. The axial center of the spray nozzle arranged at the portion closest to the funnel-shaped end is substantially perpendicular to the taper surface.

According to a eighth aspect of the present invention, there is provided a catalyst uniform supporting device, wherein the rotary barrel is driven to rotate around the catalyst supply pipe by a rotational force transmitted from a friction wheel contacting an outer peripheral wall surface of the rotary barrel. According to a ninth aspect of the apparatus for uniformly supporting a catalyst according to the present invention, the catalyst supply pipe also serves as a spindle of the rotating barrel.

In the apparatus for uniformly supporting a catalyst according to the present invention, the number of rotations of the rotary barrel is determined by the condition of the spraying time of the catalyst solution> the replacement time of the catalyst carrier. Further, in order to atomize the catalyst solution, compressed air (0.3 to 0.5 kg / c
m ² ) was not used, and a nozzle with an ejection angle of 60 ° was adopted.

On the other hand, a uniform catalyst supporting system according to a tenth aspect of the present invention is a uniform catalyst supporting system comprising the uniform catalyst supporting device according to any one of the first to ninth aspects, wherein a plurality of rotary barrels are provided. Is sequentially subjected to each treatment step, and the same rotary barrel is commonly used in the catalyst solution supporting step, the drying step, the pretreatment step and the reducing step.

[0012]

In the apparatus for uniformly supporting a catalyst according to the first and second aspects of the present invention, when the catalyst solution is sprayed from the plurality of spray nozzles onto the catalyst carrier while the rotating barrel is rotated around the catalyst supply pipe, the rotation occurs. Barrel weir part is 1
Since the catalyst carrier located below is lifted by this weir and moves to the surface side each time it rotates, that is, the catalyst carrier is agitated every one rotation of the weir part of the rotating barrel, so that the whole catalyst carrier The catalyst solution is almost uniformly impregnated in the above.

Since the catalyst uniform supporting device according to the third to seventh aspects of the present invention has the above-mentioned constitution, the catalyst solution is efficiently sprayed onto the catalyst carrier,
In the catalyst uniform supporting apparatus according to claim 8 of the present invention, the driving structure of the rotary barrel is simplified, and in the catalyst uniform supporting apparatus according to claim 9 of the present invention, the spindle of the rotary barrel supplies the catalyst. Since it is not necessary to provide it separately from the pipe, the structure can be simplified and the device cost can be reduced.

On the other hand, in the uniform catalyst supporting system according to the tenth aspect of the present invention, since it has the above-mentioned constitution, the catalyst carrier can be easily conveyed between the steps, and the workability is improved.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

1 to 4 show an embodiment of a catalyst uniform supporting device according to the present invention. As shown in FIG. 1, the catalyst uniform supporting device 1 is a cylinder filled with a catalyst carrier P. The rotary barrel 2 and the catalyst supply pipe 3 which penetrates the rotary barrel 2 and supplies the catalyst solution R to the inside thereof are provided.

The rotary barrel 2 is rotatable about a catalyst supply pipe 3 which also functions as a support shaft and is supported substantially horizontally, and the rotation transmitted from a friction wheel (not shown) contacting the outer peripheral wall surface 2a. It is designed to be driven by force. Further, as shown in FIG. 2, on the inner peripheral wall surface 2b of the rotary barrel 2, a weir 4 extending radially with a dimension of 0.8 times or less of the smallest catalyst carrier P is provided. It is provided along the axial direction.

On the other hand, the catalyst supply pipe 3 which also serves as a support shaft of the rotary barrel 2 has a plurality of spray nozzles 5 which are oriented substantially vertically downward in the longitudinal direction thereof.

In this embodiment, as shown in FIG.
In the cross section perpendicular to the catalyst supply pipe 3,
The spray angle of the catalyst solution R by the nozzle 5 is θ, and the catalyst carrier P is
When filling up to a height of 1/4 or less of the inner diameter of the rotating barrel 2
And the spray angle θ is L
Surface of catalyst solution R on catalyst support aggregate AP
When the spray width dimension for X is 0.85L ≦
More preferable to satisfy the relationship of X ≦ 0.95L
Spray angle to satisfy the relation of X = 0.9L
θ is set, and more specifically, θ ≦ 2 × ta
n^-1(9/3 ^1/2/ 10)
The spray angle θ is set.

The plurality of spray nozzles 5 provided in the catalyst supply pipe 3 have the overlapping widths of the spray ranges of the spray nozzles 5 adjacent to each other in the longitudinal direction of the catalyst supply pipe 3 in the rotating barrel 2.
Of the spray nozzles 5 arranged at both ends of the plurality of spray nozzles 5 arranged at a pitch of 5 to 15% of the inner diameter of
Are arranged at a position approximately ½ of the above pitch from the end of the rotary barrel 2.

In this case, one end 2c (left side in FIG. 1) of the rotary barrel 2 has a funnel shape, and the axial center 5a of the spray nozzle 5 arranged at the portion closest to the funnel-shaped end 2c.
Are substantially perpendicular to the tapered surface 2d of the funnel-shaped end 2c.

The catalyst uniform supporting device 1 is installed in a catalyst uniform supporting system so that a plurality of rotary barrels 2 are sequentially provided for each processing step of the catalyst production line, that is, the catalyst solution shown in FIG. Supporting step S1, drying step S
2, the pretreatment step S3 and the reduction step S4 are sequentially provided, and the same rotary barrel 2 is shared in each of the treatment steps S1 to S4.

In the above-mentioned catalyst uniform supporting device 1, in the catalyst solution supporting step S1, first, the rotational force is transmitted from the friction wheel (not shown) which is in contact with the outer peripheral wall surface 2a of the rotary barrel 2 to fill the catalyst carrier P with the rotary barrel. 2 for catalyst solution R
Spray time> replacement time of the catalyst carrier P is rotated around the catalyst supply pipe 3 at a rotation speed determined by the condition:

Subsequently, when the catalyst solution R is sprayed from the plurality of spray nozzles 5 provided in the catalyst supply pipe 3, the catalyst solution R impregnates the catalyst carrier P in the rotary barrel 2.

At this time, as shown in FIGS. 2 (a) to 2 (c), the catalyst carrier P located below is lifted by the weir 4 every time the portion of the weir 4 of the rotary barrel 2 makes one revolution. Since the catalyst carrier P is agitated every time the portion of the weir 4 of the rotary barrel 2 makes one rotation, the catalyst solution R is substantially uniformly impregnated into the entire catalyst carrier P. .

Then, in the catalyst solution supporting step S1 by the uniform catalyst supporting apparatus 1, X = 0.9 L (θ ≦ 2 ×
^{tan -1 (9 · 3 1/2 /} 10)) Yes Set spray angle θ is to satisfy the relation, also, the inner diameter overlapping width of the rotating barrel 2 of the spray ranges of the spray nozzle 5 adjacent The plurality of spray nozzles 5 are arranged at a pitch of 5 to 15% of the above, and the spray nozzles 5 located at both ends of these spray nozzles 5 are located at the end of the rotary barrel 2 at about 1 of the above pitch. It is placed in the / 2 part, and in addition,
The spray nozzle 5 is installed such that the axis 5a of the spray nozzle 5 arranged at the portion closest to the funnel-shaped end 2c of the rotary barrel 2 is substantially perpendicular to the tapered surface 2d of the funnel-shaped end 2c. Therefore, the catalyst solution R is efficiently sprayed onto the catalyst carrier P.

Further, in this catalyst uniform supporting device 1, since the rotary barrel 2 is driven by the rotational force transmitted from the friction wheel (not shown) contacting the outer peripheral wall surface 2a,
In addition to the simplification of the drive system, the catalyst supply pipe 3 also serves as the support shaft of the rotary barrel 2, so that the structure can be further simplified and the device cost can be reduced accordingly. Become.

On the other hand, in the uniform catalyst supporting system using the uniform catalyst supporting device 1, the catalyst solution supporting step S1, the drying step S2, the pretreatment step S3 and the reducing step S shown in FIG.
4, the same rotary barrel 2 is shared, so that the catalyst carrier P can be easily transported between the steps, and the workability is improved.

[0029]

As described above, according to the first aspect of the present invention.
With the uniform catalyst supporting device according to the first and second aspects, because of the above-described configuration, the entire catalyst carrier can be impregnated with the catalyst solution substantially uniformly, and therefore, the variation in impregnation concentration can be suppressed to be small. That is a very good effect.

Since the catalyst uniform supporting device according to claims 3 to 7 of the present invention has the above structure, the catalyst solution can be efficiently sprayed onto the catalyst carrier, and the catalyst carrier according to claim 8 of the present invention. According to the catalyst uniform supporting device, it is possible to realize simplification of the drive system of the rotary barrel, and in the catalyst uniform supporting device according to claim 9 of the present invention, the structure can be further simplified and the device cost can be reduced. Can be realized, which has a very excellent effect.

On the other hand, according to the uniform catalyst loading system of the tenth aspect of the present invention, with the above structure, the catalyst carrier can be easily transported between the steps.
As a result, a very good effect that the workability can be greatly improved is brought about.

[Brief description of drawings]

FIG. 1 is a cross-sectional explanatory view showing an embodiment of a uniform catalyst carrier according to the present invention in a state in which a rotary barrel is cut along a spindle.

FIG. 2 is a cross-sectional explanatory view (a) to (c) showing a state in which a rotating barrel is cut perpendicularly to a spindle, which shows the behavior of the catalyst carrier when the catalyst solution is impregnated by the uniform catalyst carrier of FIG. is there.

FIG. 3 is a cross-sectional explanatory view of a state in which a rotary barrel is cut perpendicularly to a spindle for explaining a spray angle of a spray nozzle of the catalyst uniform supporting device in FIG.

FIG. 4 is a process flow chart of a catalyst production line for explaining a uniform catalyst supporting system equipped with the uniform catalyst supporting device of FIG.

5A to 5C are simplified operation explanatory views (a) to (c) showing a conventional catalyst uniform supporting device.

[Explanation of symbols]

1 Uniform catalyst support device 2 rotating barrels 2a Outer wall surface 2b Inner wall 2c Funnel-shaped end 2d Tapered surface of funnel end 3 Catalyst supply pipe (spindle of rotating barrel; rotating shaft) 4 weirs 5 spray nozzles 5a Axial center of spray nozzle AP catalyst carrier assembly L catalyst carrier aggregate surface width dimension P catalyst carrier S1 catalyst solution loading step S2 drying process S3 pretreatment process S4 reduction process R catalyst solution X Spray width dimension θ Spray angle of spray nozzle

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 4G036 AA12                 4G069 AA03 AA08 FA02 FB14 FB18                       FB43 FB57 FB79

Claims (10)

[Claims] 1. A cylindrical rotary barrel filled with a catalyst carrier, and a catalyst supply pipe which penetrates the rotary barrel and supplies a catalyst solution to the inside thereof, wherein the rotary barrel surrounds the catalyst supply pipe. A catalyst uniform supporting device rotatably and substantially horizontally supported on the catalyst supply pipe, wherein the catalyst supply pipe has a plurality of vertically downward spray nozzles installed at regular intervals in the longitudinal direction thereof. A uniform catalyst supporting device, wherein a weir extending in a radial direction is provided on an inner peripheral wall surface of the barrel along an axial direction of the rotating barrel. 2. The uniform catalyst supporting device according to claim 1, wherein the extension dimension of the weir is 0.8 times or less that of the smallest catalyst carrier among the catalyst carriers. 3. The spray angle of the catalyst solution by the spray nozzle is θ in a cross section perpendicular to the axis of rotation of the rotary barrel.
When the catalyst carrier is filled to a height of 1/4 or less of the inner diameter of the rotary barrel, the surface width dimension of the catalyst carrier assembly is L, and the spray width dimension of the catalyst solution to the surface of the catalyst carrier assembly when the spray angle is θ When X, the spray angle θ is 0.85L
The method according to claim 1 or 2, which satisfies the relationship of ≤X≤0.95L.
The uniform catalyst supporting device according to item 1. 4. The spray angle θ of the catalyst solution by the spray nozzle is in a cross section perpendicular to the axis of rotation of the rotary barrel.
^{θ ≦ 2 × tan -1 (9} · 3 1/2 / 10) catalyst uniformly carried device according to claim 1 or 2 satisfying the relation. 5. The plurality of spray nozzles are arranged at a pitch such that the overlapping width of each spray range of the spray nozzles adjacent in the longitudinal direction of the catalyst supply pipe is 5 to 15% of the inner diameter of the rotary barrel. The uniform catalyst supporting device according to any one of 1 to 4. 6. The spray nozzles located at both ends of the plurality of spray nozzles are approximately 1 / pitch of the pitch from the end of the rotary barrel.
The catalyst uniform supporting device according to claim 5, wherein the catalyst uniform supporting device is disposed at the second position. 7. A shaft of a spray nozzle, wherein at least one of the ends of the rotary barrel has a funnel shape, and the spray nozzle is arranged at a portion closest to the funnel-shaped end with respect to the tapered surface of the funnel-shaped end. The uniform catalyst supporting device according to any one of claims 1 to 6, wherein the core has a substantially vertical shape. 8. The catalyst uniform supporting device according to claim 1, wherein the rotary barrel is rotationally driven around the catalyst supply pipe by a rotational force transmitted from a friction wheel contacting an outer peripheral wall surface of the rotary barrel. 9. The catalyst uniform supporting device according to claim 1, wherein the catalyst supply pipe also serves as a support shaft of the rotating barrel. 10. A catalyst uniform supporting system comprising the catalyst uniform supporting device according to claim 1, wherein a plurality of rotary barrels are sequentially subjected to each treatment step, a catalyst solution supporting step and a drying step. A uniform catalyst loading system characterized in that the same rotary barrel is shared in the process, pretreatment process and reduction process.