JPH0710681B2 - Catalyst filling method and catalyst filling device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a catalyst filling method and a catalyst for filling a vertical double-tube structure such as a reformer of a fuel cell power plant with a catalyst. Regarding the filling device.

(Prior Art) As shown in FIGS. 10 to 12, a fuel cell power plant
The reformer 10 installed at 20 includes a reforming pipe (outer cylinder) 4 having an inner diameter of about 260 mm and an inner pipe (inner cylinder) 14 having an outer diameter of about 200 mm, which is built in via a support 3 to Catalyst 15 between inner tubes 14
Is filled, and the process gas passes through the catalyst 15. The normal reforming pipe 10 has a length of about 3 to 4 m, and is vertically connected to the manifold 21 at the bottom.

When filling the catalyst 15, the catalyst 15 having a relatively high strength and a high density is directly connected to the reforming pipe 4 and the inner pipe 14 from above the reformer 10.
However, in the case of the catalyst 15 which has a low density and a small crushing strength due to its nature, it is necessary to make it flow within the determined head.

A conventional catalyst filling method will be described with reference to FIGS. 13 to 16.

As a method of filling a catalyst having a small crushing strength, there is a conventional method shown in FIGS. 13 to 15. First, as shown in FIG. 15, a sock-shaped tube 2 whose bottom 23a is temporarily tightened with a string 24
This is a method in which the catalyst 15 is filled in 3 and then this cylinder 23 is inserted between the reforming pipe 4 and the inner pipe 14 as shown in FIG. In this case, when the bottom 23a of the cylinder 23 reaches the eye blood 5, the catalyst 15 is gradually filled while repeating the work of unwinding the string 24.

Further, there is a filling method as shown in FIG. That is,
A vinyl hose 27 is spirally arranged between the reforming pipe 4 and the inner pipe, and the catalyst 15 is placed from the upper end of the vinyl hose 27.
There is a way to inject.

(Problems to be Solved by the Invention) As described above, as a method of filling the catalyst 15 having a property of low density and small crushing strength, a method using the cylinder 23 shown in FIGS. 13 to 15, and There is a method using a vinyl hose 27 shown in FIG. Then, by such a method, it is possible to prevent the corners of the catalyst 15 from being chipped or broken due to the impact at the time of dropping and becoming powdery. Also,
This causes the catalyst 15 to pop out from the eye blood 5 and
Prevents carryover from occurring in the shift converter on the downstream side during operation.

However, in the method using the cylinder 23 shown in FIG. 13 to FIG. 15, when the work of filling the catalyst into the cylinder 23 is labor intensive and the space between the reforming pipe 4 and the inner pipe 14 is narrow, , Cylinder
The efficiency of the work of unwinding the string 24 from the bottom portion 23a of 23 becomes poor.

On the other hand, in the method in which the vinyl hose 27 is spirally inserted and the catalyst 15 is poured as shown in FIG. 13, the support 3 supporting the inner pipe 14 is attached to the reforming pipe 4, so that the vinyl hose 27 itself is It cannot be spirally wound properly and the catalyst 15 cannot flow properly. Further, since the vinyl hose 27 itself is thin, the catalyst 15 is easily clogged. Furthermore, even if it is filled well, gradually the inlet 27a of the vinyl hose 27
Is required to be moved upward, and in this case, there are major problems in efficiency and workability.

The present invention has been made in consideration of such points,
It is an object of the present invention to provide a catalyst filling method and a catalyst filling device that can efficiently and without proficiency fill the catalyst without crushing it.

[Structure of Invention]

(Means for Solving the Problem) The present invention includes a plurality of support plates that are slidably inserted in the longitudinal direction between an inner cylinder and an outer cylinder of a vertical double-tube structure. A catalyst filling device, characterized by alternately arranging a cone-shaped inner baffle plate inclined downward from the inner cylinder side and an inverted conical outer baffle plate inclined downward from the outer cylinder side, and The catalyst filling device described above is arranged between the inner cylinder and the outer cylinder of the vertical double-tube structure, and while the catalyst is being injected into the support plates from above, the catalyst filling device is pulled up to load the catalyst. There is a catalyst filling method for filling.

(Operation) The catalyst packing device is placed between the cylinder and the outer cylinder, and the catalyst is injected between the support plates from above, and the catalyst packing device is gradually pulled up, so that the injected catalyst is deflected to the outside baffle plate. And the inner baffle plate is sequentially guided, the falling speed is suppressed, and the space is filled between the inner cylinder and the outer cylinder.

Embodiments Embodiments of the present invention will be described below with reference to the drawings.
1 to 9 are views showing an embodiment of the present invention.

As shown in FIGS. 1 and 2, the reformer 10 installed in the fuel cell power plant has a reforming pipe (outer cylinder) 4 and a support for the reforming pipe 4 as described in the related art. It is a vertical double structure composed of an inner pipe (inner cylinder) 14 supported by.

As shown in FIG. 2, a space 11 is provided between the reforming pipe 4 and the inner pipe 14.
And the support 3 is arranged in a cross shape between the reforming pipe 4 and the inner pipe 14. Below the space 11, the catalyst 15
The eye blood 5 on which the is placed is provided.

Next, the catalyst filling device according to the present invention will be described.

As shown in FIG. 1, the catalyst filling device 1 includes a reforming pipe 4 and an inner pipe.
A support plate 2 is provided which is inserted into a space 11 between the support plate 2 and 14 and is slidable in the longitudinal direction. This support plate 2 is a set of two, and a total of four sets are provided. The support plates 2 of each set are housed in the space 11 divided into four by the support 3. In addition, each set of support plate 2
In between, a conical inner baffle plate 7 inclined downward from the inner pipe 14 side and an outer conical outer baffle plate 6 inclined downward from the reforming pipe 4 side are alternately arranged at a predetermined interval l. Has been done. Therefore, both the inner baffle plate 7 and the outer baffle plate 6 have a fan shape of 90 ° when viewed from above (FIG. 2).

Further, as shown in FIG. 3, on the upper surfaces of the inner baffle plate 7 and the inner baffle plate 6, for the purpose of reducing the impact of the catalyst,
A rubber plate 7a and a rubber plate 6a are attached as the warming material.

The support plates 2 of each set are fixed to the top plate 8 at their upper ends, and eyebolts 9 are fixed to the top of the top plate 8 (FIGS. 8 and 9).

In addition, an inverted conical throat body 18 is arranged above the reformer 10 to facilitate injection of the catalyst 15. The throat body 18 is composed of an inverted conical throat 16 provided on the upper end 4a of the reforming pipe 4 and a cylindrical body 17 provided on the upper end 14a of the inner pipe 14 and having a diameter substantially the same as that of the inner pipe 14. The throat 16 and the cylindrical body 17 are connected to each other at a lower portion by a connecting pipe 19 (Fig. 7).

Next, the operation of this embodiment having such a configuration will be described.

FIG. 4 shows the reformer 10 before inserting the catalyst filling device 1. As shown in FIGS. 6 and 7, this reformer
A throat body 18 including an inverted conical throat 16 and a cylindrical body 17 is arranged on the upper part of 10. In this case, the connecting portion 19 of the throat body 18 is aligned with the position corresponding to the support 3 of the reformer 10. That is, when viewed from the upper end, the lower end space of the throat 16
16a is divided into four by the connecting portion 19, and the reforming pipe 4
The space 11 between the inner cylinder 14 and the inner cylinder 14 is also divided into four at the same position by the support 3.

Next, the catalyst filling device 1 is inserted into the reformer 10 from above the throat body 18 while holding the eyebolt 9. In this case, each set of support plates 2 of the catalyst filling device 1 and the support plates 2
Inner baffle 7 and outer baffle 6 provided between
Is the lower end space 16 of the throat partitioned by the connecting portion 19.
It is stored in the space 11 partitioned by a and the support 3. The lower end portion 2b of each support plate 2 is a plate 5
When reaching the vicinity of, the insertion of the catalyst filling device 1 is stopped.

Next, the catalyst 15 is injected between the throat 16 and the cylindrical body 17 from above. The injected catalyst 15 drops downward while being sequentially guided by the outer baffle plate 6 and the inner baffle plate 7, and the outer baffle plate 6 and the side baffle plate 7 suppress the falling speed. In this case, the outer baffle plate 6
Also, since the rubber plate 6a and the rubber plate 7a are attached to the upper surface of the inner baffle plate 7, it is possible to effectively prevent the catalyst 15 from being damaged.

Next, as shown in FIG. 8, while the injected catalyst 15 is being successively stacked on the pan 5, the catalyst filling device 1 is gradually pulled up by the eyebolt 9. When pulling up the catalyst filling device 1, the catalyst stacked on the lower end portion 2b of the support plate 2
The distance h between the upper surface of 15 is kept constant.

When a predetermined amount of catalyst 15 is filled in the reformer 10, the catalyst filling device 1 is completely pulled up from the reformer 10 (Fig. 9).

In this case, a connecting rod extending downward from the central portion of the lower surface of the top plate 8 is provided, and the lower end of the connecting rod 13 is a cylindrical body 17 of the throat body 18.
The catalyst charging device 1 by engaging with the catalyst
The throat body 18 can be pulled up at the same time when the throat is pulled up.

As described above, according to the present invention, the impact when the catalyst 15 is filled can be reduced by the outer baffle plate 6 and the inner baffle plate 7, so that the catalyst has a relatively low density and a small breaking strength. However, the catalyst is not damaged during filling. Further, since the catalyst can be filled by only injecting the catalyst from the throat body 18 side and pulling up the catalyst filling device 1, it is possible to perform the filling work efficiently without skill.

In the above embodiment, the catalyst filling device 1 is used to fill the reformer 10 of the fuel cell power plant with the catalyst. However, the present invention is not limited to this, and another vertical double pipe structure or a simple structure is used. It can also be used for filling vertical tubes.

〔The invention's effect〕

As described above, according to the present invention, since the catalyst is gradually guided while being guided by the outer baffle plate and the inner baffle plate, the falling speed is suppressed, so even if the catalyst has a relatively low density and a small breaking strength, No damage during filling. Also,
Since the catalyst can be filled by simply injecting the catalyst from above and pulling up the catalyst filling device, no skill is required for the catalyst filling work.

[Brief description of drawings]

FIG. 1 is a side sectional view showing an embodiment of a catalyst packing device according to the present invention inserted in a reformer, and FIG. 2 is FIG.
FIG. 3 is a cross-sectional view taken along line II, FIG. 3 is an enlarged view of the catalyst filling device of FIG. 1, FIG. 4 is a side cross-sectional view showing the reformer before inserting the catalyst filling device, and FIG. 4 is a sectional view taken along line VV of FIG. 4, FIG. 6 is a side sectional view showing a state in which a throat is attached to a reformer, and FIG. 7 is a perspective view taken along line VII-VII of FIG. 8 is a side sectional view showing a state in which the catalyst filling device is pulled up from the reformer, and FIG. 9 is a side sectional view showing a state in which the catalyst filling device is completely pulled up from the reformer.
Figure 10 is a schematic diagram showing a fuel cell power plant.
The figure is a diagram showing a state in which the catalyst is filled in the reformer,
FIG. 12 is a sectional view taken along the line XII-XII in FIG.
FIG. 15 is a diagram showing a conventional catalyst filling method using a cylinder,
FIG. 16 is a view showing a conventional catalyst filling method using a vinyl hose. 1 ... Catalyst filling device, 2 ... Support plate, 4 ... Reforming tube, 6
…… Outside baffle plate, 7 …… Inner baffle plate, 10 …… Reformer, 14 …… Inner tube, 15 …… Catalyst, 16 …… Sloat, 17 ……
Cylindrical body, 18 ... Throat body.

Claims (3)

[Claims] 1. A plurality of support plates which are slidably inserted in a longitudinal direction between an inner cylinder and an outer cylinder of a vertical double pipe structure,
A catalyst filling characterized in that a conical inner baffle plate inclined downward from the inner cylinder side and an inverted conical outer deflector plate inclined downward from the outer cylinder side are alternately arranged between the support plates. apparatus. 2. A throat body comprising a cylindrical body provided at the upper end of the inner cylinder and having substantially the same diameter as the inner cylinder, and an inverted conical throat provided at the upper end of the outer cylinder. The catalyst filling device according to claim 1. 3. The catalyst filling device according to claim 1 is arranged between an inner cylinder and an outer cylinder of a vertical double-tube structure, and the catalyst filling device is filled with a catalyst from above while supporting the catalyst. A catalyst packing method in which the catalyst is packed by pulling up.