KR102648536B1 - A scafold platform for a RFCC regenerator - Google Patents

Abstract

The present invention proposes a repair platform capable of moving up and down used inside a fluid catalytic decomposition regenerator. The lower support part 10 of the present invention is seated between the internal air dome 4 and the air arm 6. The upper support part 20 is disposed on the upper part of the lower support part 10 and includes at least one pair of support rings for supporting the work platform and a plurality of radial members 21 and 23 connecting the support rings in the radial direction. It is composed. And a plurality of connecting members 30 structurally connect the lower support part 10 and the upper support part 20. Here, the support ring and radial members 21 and 23 of the lower support part 10 and the upper support part 20, and the connecting member 30 are disassembled and assembled with bolts and nuts, and the lower support part 10 and the upper support part The support ring of (20), the radial members (21, 23), and the connecting member (30) are composed of a plurality of members, and these members are also characterized in that they are disassembled and assembled using bolts and nuts.

Description

A scaffold platform for a RFCC regenerator}

The present invention relates to a device for internal maintenance of a fluid catalytic cracking (RFCC) regenerator, and more specifically, to maintenance work on the upper part of the air dome inside the catalytic regenerator and work above it, For example, it relates to a repair platform configured to simultaneously perform maintenance and repair of heat-resistant materials.

A fluid catalytic cracking (RFCC) regenerator can be said to be used to regenerate a catalyst in which carbon has been bound. Inside this regenerator, an air dome and an air arm are installed in connection with the supply of oxygen for catalyst regeneration. For internal maintenance of such a regenerator, it is common for workers to enter the inside through a manhole in the regenerator shell and perform the work.

In general, workers who enter the shell through a manhole perform designated tasks on top of the air dome. Also, for safety reasons, it may be undesirable to separately repair the heat-resistant materials above the air dome while work is in progress. In other words, it can be said that it is not desirable for safety reasons to perform repair work simultaneously on the top and bottom.

However, if a safe system for work can be secured, I think it is natural that it is efficient to carry out work simultaneously at the top and bottom. To achieve this, it is natural that safety must be sufficiently secured for work on top of the air dome.

The present invention seeks to propose a platform for efficient maintenance and repair inside a fluid catalytic cracking (RFCC) regenerator.

According to the configuration of the repair platform for the fluid catalytic decomposition regenerator of the present invention, the lower support portion is installed to be seated between the air dome and the air arm inside the fluid catalytic decomposition regenerator. And the upper support part is disposed on the upper part of the lower support part and includes at least one pair of support rings for supporting the work platform, and a plurality of radial members connecting the support rings in the radial direction. And the connecting member is composed of a plurality of structurally connecting the lower support part and the upper support part. Here, the support ring and radial member of the lower support part and the upper support part, and the connecting member are disassembled and assembled using bolts and nuts. In this way, the support rings, radial members, and connecting members of the upper and lower supports are composed of a plurality of members, and these members are also disassembled and assembled using bolts and nuts.

According to another embodiment of the present invention, at least some of the radial members extend to the center, a central upper plate and a lower central plate are installed on the upper and lower surfaces of the inner ends of the radial members, and the central lower plate has a central pipe whose lower end contacts the upper surface of the air dome. It is installed.

According to another embodiment of the present invention, the lower support portion is composed of a circular pipe, and the upper support portion is composed of a circular pipe.

According to the repair platform of the present invention's fluid catalytic decomposition regenerator having the above configuration, repair work related to the air dome and air arm can be quickly performed at the top of the air dome, and at the same time, the footrest installed on the upper support part You can expect the advantage of being able to carry out work such as repairing the heat-resistant layer inside the shell simultaneously.

The lower support part is molded from a circular pipe, so it can be most stably seated between the air dome and air arm. And because the upper support is made using H beams, it is expected to be the safest structurally and be able to support the scaffolding more stably. The connecting member can be installed structurally simply by using a square pipe to stably support the upper and lower supports.

In addition, according to the present invention, the support ring and radial member of the lower support part and the upper support part, and the connecting member are disassembled and assembled using bolts and nuts. At the same time, it can be seen that the support ring and radial member of the lower support part and the upper support part, and the connecting member are composed of multiple members, and these members can also be disassembled and assembled using bolts and nuts. This configuration means that it is substantially convenient to assemble and disassemble inside the shell, thereby ensuring sufficient convenience of use.

Figure 1 is a perspective view showing the maintenance device of the present invention installed inside a regenerator.
Figure 2 is an exemplary perspective view of the present invention maintenance device.
Figure 3 is an exemplary cross-sectional view of the repair device of the present invention.

Next, the present invention will be examined in detail based on the embodiments shown in the drawings.

As shown in FIG. 1, an air dome 4 and an air arm 6 are installed inside the shell 2 of the catalyst regenerator to supply air necessary for catalyst regeneration. One air dome (4) installed in the center has a circular shape when viewed in plan view, and a plurality of air arms (6) are arranged in numbers over the entire circumference of the air dome (4).

The repair platform (F) of the present invention is installed on the air dome (4). In addition, such an air dome (4) transports a plurality of members to the inside through an entrance (manhole) (not shown) formed in the shell (2), and then bolts the plurality of parts from the inside of the shell (2). It is completed inside the shell 2 by assembling it into an entire assembly using nuts and bolts, and when use inside the shell 2 is finished, it is dismantled and taken out.

As can be seen with reference to Figures 2 and 3, the platform of the present invention is made with a lower support part 10 placed on the air dome 4 and a position spaced upward from this lower support part 10. It includes an upper support portion (20) to support the footrest. And the lower support part 10 and the upper support part 20 are connected by a plurality of connecting pipes 30.

Here, the lower support portion 10, as shown in FIG. 1, can be said to be a ring-shaped member formed so as to be supported in the groove formed at the contact portion between the air dome 4 and the air arm 6. . This lower support portion 10 is preferably made of a circular pipe in consideration of the installation location described above. And the lower support part 10 is formed of a number of parts. For example, it may be composed of arc-shaped parts of a size that can enter and exit the manhole (entrance) of the shell 2.

As described above, since the entire platform of the present invention must be configured to be able to be assembled and disassembled, it is actually designed to be assembled and disassembled using bolts and nuts. The lower support portion 10, which is composed of a circular pipe, is made using a plurality of arc-shaped pipes. For example, flanges extending radially are made at both ends of the arc-shaped pipe, and the flanges of both arc-shaped pipes are connected with a plurality of bolts and By fastening with a nut, the lower support portion 10 having an overall circular pipe shape may be completed. It can be seen that this flange (10F) is shown by way of example in Figure 3.

In addition, the upper support part 20 can be said to be a part for installing and supporting a footrest for the worker, and this upper support part 20 is also made in a plurality (at least two or more) circular shapes. This upper support portion 20 is preferably made of H beam, considering the installed scaffolding and structural strength. Here, the flat part (flange) of the H beam is installed facing upward.

This upper support portion 20 includes a plurality of circular support rings 22, 24, and 26 with different diameters, and a plurality of circular support rings 22, 24, and 26 installed in the radial direction to connect the above-described plurality of circular support rings 22, 24, and 26 to each other. As described above, it includes radial members 21 and 23, and it is preferable that they are all made of H beams. In the illustrated embodiment, the support rings 22, 24, and 26 are composed of three pieces, but they are not limited to this embodiment, and can also be composed of a pair as long as the footrest can be supported at the top.

And the support rings 22, 24, and 26 having different diameters are each formed into a ring shape by connecting a plurality of arc-shaped members to each other. For example, by connecting multiple arc-shaped members made of H-beams with bolts and nuts, the overall shape is made circular. That is, a plurality of arc-shaped members to form the outermost first support ring 22, the middle second support ring 24, and the innermost third support ring 26 are formed using bolts and nuts. It is assembled so that it can be disassembled.

For example, a common bracket is installed at the connection part (top or bottom) of each arc-shaped member, and these brackets are fastened to the flange parts of both arc-shaped members with a number of bolts and nuts to form three circles overall. The support rings (22, 24, 26) will be completed. At this time, the common bracket is preferably installed on the flange (plane portion) of the arc-shaped member, and may be mounted on at least one side of the upper and lower surfaces.

Such support rings (22, 24, 26) can be formed to form an overall accurate circular shape by connecting a plurality of arc-shaped members made of H beams as described above, and the first support ring (22) and the second support ring (22) can be formed. It can be seen in Figure 2 that the second support ring 24 is formed by a plurality of arc-shaped members like this.

It can be seen that the innermost support ring 26 is made, for example, by arranging a plurality of straight members (10 in the illustrated embodiment) in an overall circular shape and bolting them. As shown in FIG. 3, a trolley support portion (Ts) for supporting the troller (T) can be installed at the lower end of the first support ring (22). This trolley support may also have a shape like an H beam, and is used to move heavy parts to the manhole side using a trolley.

These support rings (22, 24, 26) are connected to each other by a plurality of radial members (21, 23) arranged in the radial (or diameter) direction. For example, at the top of the first support ring 22, a plurality of first radial members 21 extending to the center of the ring member are connected by bolts. For example, this means connecting the flange of the first support ring 22 and the flange of the first radial member 21 with bolts and nuts.

And according to the illustrated embodiment, the outer end of the first radial member 21 is fixed in a raised state on the upper part of the first support ring 22, and the inner end extends to the central portion. The second radial member 23 connects the first support ring 22 to the third support ring 26, connects the first support ring 22 and the second support ring 24, and The connection between the second support ring 24 and the third support ring is arranged in a row.

The first radial member 21 and the second radial member 23 have a substantially straight shape arranged in the radial direction and are arranged alternately with each other. And the first radial member 21 extends to the central portion of the support rings 22, 24, and 26. As shown in Figure 3, the inner end of the first radial member 21, that is, the upper and lower inner ends of the first radial member 21 corresponding to the center of the support ring, each have a circular or ring shape made of plates. The central upper plate 42 and the central lower plate 44 are fixed.

As described above, the central upper plate 42 and the central lower plate 44 are also disassembly coupled by bolts and nuts. In addition, an auxiliary lower central plate 46 is installed on the bottom of the lower central plate 44, and the lower end is designed to support the central pipe 40 in contact with the center of the upper surface of the air dome (4). It is preferable that the plurality of members described above, for example, the three support rings 22, 24, and 26 and the lower support portion 10, are made by combining a plurality of members.

And the components, each of which consists of a plurality of components, are connected to each other by bolts and nuts. This can be said to be for disassembly and assembly. For example, it can be seen that the connection between the second radial member 23 and the second support ring 24 is made of a plurality of bolts and nuts using a bracket. At this time, considering that brackets that can commonly cover adjacent members are installed, it is desirable to connect adjacent members to each other while forming a plane.

Here, it can be said that it is more preferable in terms of structural strength that the member connecting the first support ring 22 to the center top plate 42, that is, the first radial member 21, is composed of one member. However, it is clear that it is not limited to this. As described above, a plurality of connection pipes 30 are installed between the upper support part 20 and the lower support part 10 to maintain structural strength at the top and bottom.

It is preferable to use a square pipe as the connection pipe 30 in terms of structural strength and ease of assembly. The connection of the square pipe connecting pipe 30 also uses bolts and nuts. For example, it is desirable to connect the radially extending flanges 40F of the square pipe to each other using bolts and nuts.

The upper end of the connecting pipe 30 is fastened to the flat bottom surface of the first support ring 22 using bolts and nuts. At this time, the upper end of the connecting pipe 30 is on the same plane as the first support ring 22. It is advisable to make an achievable bracket in advance. And the flange 40F provided at the lower end of the connecting pipe 30 is fastened with bolts and nuts to the upwardly extending square pipe pre-made in the arc-shaped pipe of the corresponding lower support portion 10 and the flange at the upper end thereof. It is desirable.

Such connection pipes 30 are composed of a plurality, for example, a first connection pipe 32 connecting the lower support portion 10 and the second radial member 23, the lower support portion 10 and the first radial member 23. It may be composed of a pair of second connection pipes 34 and 36 respectively connecting the inner and outer portions of the radial member 21. It is natural that the first connection pipe 32 and the second connection pipes 34 and 36 are installed alternately.

In the present invention as discussed above, the plurality of support rings (22, 24, 26), the plurality of radial members (21, 23), and the plurality of connecting members (30) are disassembled using bolts and nuts. It is designed to be assembled. And it can be seen that the plurality of support rings (22, 24, 26), the plurality of radial members (21, 23), and the plurality of connecting members (30) are each composed of multiple parts, and in this way, one member is Even when composed of multiple pieces, it can be seen that each part is designed to be disassembled by assembling it with bolts and nuts.

It goes without saying that FIGS. 1 to 3 and the above description based thereon are substantially only one embodiment of the present invention. Of course, various modifications within the technical scope of the present invention described through these examples will be fully possible for those skilled in the art. Therefore, it can be said that, after registration, the scope of protection of the present invention should be interpreted based on the description of the patent claims, which is natural for the purpose of the provisions of the Patent Act.

10 ..... lower support part
20 ..... Upper support part
21, 23 ..... Radial member
22, 24, 26 ..... Support ring
32, 34, 36 ..... connection pipe

Claims (4)

A lower support portion (10) seated between the air dome (4) and the air arm (6) inside the fluid catalytic decomposition regenerator;
The upper support part 20 is disposed on the upper part of the lower support part 10 and includes at least one pair of support rings for supporting a work platform and a plurality of radial members 21 and 23 connecting the support rings in the radial direction. ); and
It consists of a plurality of connecting members 30 that structurally connect the lower support part 10 and the upper support part 20;
The support ring and radial members 21 and 23 of the lower support part 10 and the upper support part 20, and the connecting member 30 are disassembly assembled using bolts and nuts, and the lower support part 10 and the upper support part The support ring of (20), the radial members (21, 23), and the connecting member (30) are composed of a plurality of members, and these members are also disassembled and assembled using bolts and nuts;
At least some of the radial members 21 extend to the center, and a central upper plate and a lower central plate are installed on the upper and lower surfaces of the inner ends of the radial member 21, and the central lower plate has a central pipe 40 whose lower end contacts the upper surface of the air dome. A repair platform for a fluid catalytic cracking regenerator, characterized in that it is installed.
delete The maintenance platform for a fluid catalytic cracking regenerator according to claim 1, wherein the lower support (10) and the upper support (20) are made of circular pipes.
delete