CN211754848U

CN211754848U - Sealing structure for installing grid in tower, adsorption separation tower and fixed bed reactor

Info

Publication number: CN211754848U
Application number: CN201922016879.XU
Authority: CN
Inventors: 赵健棋; 陈凤鸣; 王少兵
Original assignee: Sinopec Research Institute of Petroleum Processing; China Petroleum and Chemical Corp
Current assignee: Sinopec Research Institute of Petroleum Processing; China Petroleum and Chemical Corp
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2020-10-27
Anticipated expiration: 2029-11-19

Abstract

A kind of sealing structure, adsorption separation tower and fixed bed reactor which installs the grid in the tower, the said sealing structure includes: grid frame (2), with grid frame top clearance fit' S type locating part (1) and sealing member (4), wherein, sealing member (4) arrange in S type locating part (1) upper portion, between the adjacent grid frame or the gap between grid frame and the tower inner wall in, and fill up the gap. The utility model provides a seal structure of installation grid in tower conveniently solves the problem that the in-process glass fine rope that runs at the equipment length period dropped. And the time, labor and materials for hoisting the repair welding stop bars by the grids are saved.

Description

Sealing structure for installing grid in tower, adsorption separation tower and fixed bed reactor

Technical Field

The utility model relates to a separating column internals specifically relates to a fixed knot of separating column internally mounted grid constructs.

Background

The grating is widely applied to screening various materials. In a separation tower in the field of petrochemical industry, a grid internal part is arranged, the space in the separation tower is divided into a plurality of adsorbent or catalyst beds, each bed space is filled with adsorbent or catalyst with smaller diameter (usually less than 1mm), liquid materials circularly and sequentially enter the tower, flow from top to bottom and flow through each bed; the grid inner member may be divided into a plurality of segments or rectangular blocks, and may be placed on the support beam or the support ring. The surface of the grid is usually a welded strip-shaped screen mesh, so that adsorbent or catalyst particles can be prevented from entering the grid, and meanwhile, materials are allowed to smoothly flow through the grid and enter the next bed layer. And for gaps between grid blocks and gaps between grid frames and tower walls, glass fiber ropes are usually filled to prevent the loss of the adsorbent or catalyst particles.

The mode of the existing glass fiber rope installation is to weld a stop bar on the outer circumference of the frame of the grating so as to prevent the glass fiber rope from falling. However, due to the manufacturing error of the tower body, the ovality of the tower body is inevitably out of tolerance. Therefore, gaps between the grid blocks and gaps between the grids and the tower wall are difficult to ensure to be the same as the design value, and when the actual gap value is larger than the design value after the grids are in place, the original blocking strip size cannot play a role in fixing the glass fiber ropes. At this time, the mode of hanging the grid block out and re-repairing the welding stop bars is adopted to ensure that the glass fiber ropes do not fall off after being filled. However, the method has a large workload, and if the welding process of the repair welding barrier bars is not well controlled, the deformation of the grating frame is easily caused. And the adjacent grid blocks need to be put and adjusted again after the repair welding of the grid blocks is finished, so that a large amount of time, manpower and material resources are consumed. In practical application, the treatment is not needed, the problems that the glass fiber ropes fall off and the like are found in the conventional maintenance process, the falling of the glass fiber ropes can cause the loss of the adsorbent or the catalyst between beds, the volume of a flowing dead zone in a tower is increased, and the product yield, the purity and the like are influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses there is the clearance between solving between the grid piece and between grid outline and the knockout tower inner wall, leads to the catalyst to run and decreases, influences the problem of product yield, provides a fixed knot who reaches between the grid piece and grid outline and knockout tower inner wall constructs, can conveniently seal the clearance between the grid piece and between grid outline and the knockout tower inner wall, improves knockout tower separation efficiency and product quality.

A sealing structure for a mounting grid in a tower, comprising: grid frame 2, with grid frame top clearance fit' S type locating part 1 and sealing member 4, wherein, sealing member 4 arrange in the 1 upper portion of S type locating part, between the adjacent grid frame or in the gap between grid frame and the tower inner wall, and fill up the gap.

An adsorption separation column comprising: the device comprises a separation tower shell, a fluid inlet and a fluid outlet which are arranged on the separation tower shell, and a plurality of layers of grids and adsorbent bed layers in the separation tower shell, wherein gaps between the outer frame of each layer of grids and the inner wall of the separation tower shell and between the adjacent grid frames are provided with the sealing structure for installing the grids in the tower.

A fixed bed reactor, comprising: the device comprises a reactor shell, a fluid inlet and a fluid outlet which are arranged on the reactor shell, and a plurality of layers of grids and catalyst beds in the reactor shell, wherein the sealing structure of the grid arranged in the tower is arranged in the gap between the outer frame of each layer of grids and the inner wall of the reactor shell and between the adjacent frames of the grids.

The utility model provides a seal structure of installation grid in tower's beneficial effect:

the utility model provides a seal structure of installation grid in tower is applicable to that the absorption agent bed in the adsorption separation tower is sealed, and when clearance value between the adjacent grid piece and between grid piece and the tower inner wall was greater than the design value, set up in the great department in clearance the utility model provides a seal structure of installation grid in tower removes the loaded down with trivial details work of hoisting the grid piece and repair welding the blend stop from. The sealing element is embedded into the groove of the S-shaped limiting part, so that the sealing element can not fall off in long-period operation of the equipment, the phenomenon of loss of an adsorbent or a catalyst filled on the upper layer of the grating can not occur, and the yield and the purity of a long-period operation product of the equipment can be ensured.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of a sealing structure for installing a grid in a tower according to the present invention;

FIG. 2 is a schematic view of another embodiment of a sealing structure for mounting a grid in a tower according to the present invention;

FIG. 3 is a schematic view of a sealing structure between grating blocks in the prior art;

FIG. 4 is a schematic view of a sealing structure between the inner wall of the tower and the grid block in the prior art;

fig. 5 is a schematic structural diagram of the adsorption separation tower provided by the present invention.

Description of the reference numerals

1-S type limit piece; 2-a grid frame; 3-barrier strip; 4-seal 5-separation column wall; 6-adsorbent bed layer; 7-a support beam; 8-a grid.

Detailed Description

The following describes the embodiments of the present invention in detail.

A sealing structure for a mounting grid in a tower, comprising: grid frame 2, with grid frame top clearance fit' S type locating part 1 and sealing member 4, wherein, sealing member 4 arrange in the gap between S type locating part 1 upper portion, the adjacent grid frame or between grid frame and the tower inner wall, and fill up the gap.

Preferably, the upper bending width of the S-shaped limiting member 1 is matched with the top of the grating frame, and the bottom bending has elasticity, and the width of the S-shaped limiting member is matched with the gap between the adjacent grating frames or between the grating frame and the inner wall of the tower.

Preferably, the height of the S-shaped limiting part is 50-300mm, and the thickness of the S-shaped limiting part is 1-20 mm.

Preferably, a barrier strip is further disposed outside the grille frame and below the S-shaped position-limiting member. The cross section of the barrier strip can be rectangular, semicircular or trapezoidal, and preferably, the cross section of the barrier strip is rectangular.

Preferably, the sealing element is made of high-temperature-resistant elastic material, preferably glass fiber rope or ceramic fiber rope.

Preferably, the S-shaped position limiting member is made of metal, and preferably made of carbon steel or alloy steel.

Preferably, the included angle between the middle section of the S-shaped limiting piece and the vertical direction is 5-45 °. The S-shaped limiting piece has elasticity, and the width can be finely adjusted to adapt to the change of the gap.

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

Fig. 1 is the utility model provides a seal structure's of installation grid in tower schematic diagram, as shown in fig. 1, there is the clearance that is greater than the design value between the adjacent grid frame 2, the utility model provides a seal structure of installation grid in tower includes: grid frame 2, with grid frame top clearance fit' S type locating part 1 and sealing member 4, wherein, sealing member 4 arrange in the 1 upper portion of S type locating part, between the adjacent grid frame or in the gap between grid frame and the tower inner wall, and fill up the gap. Preferably, a barrier strip 3 is further disposed outside the grille frame 2 and below the S-shaped position limiting member, and the cross-sectional area of the barrier strip 3 is preferably rectangular. The seal of figure 1 uses glass fibre rope.

Fig. 3 shows a sealing method for a gap between adjacent grid blocks in the prior art, wherein barrier strips 3 are welded on the outer sides of the grid frames, and sealing elements 4 are placed on the barrier strips 3 of the adjacent grid frames. However, in the operation process of the device, the sealing elements 4 between the grating blocks are easy to fall off, and the adsorbent leaks, so that the volume of a flow dead zone is increased, and the product quality is influenced. When the clearance between the grid frames is too large, the grid blocks also need to be hoisted and welded again, and the workload is large.

Fig. 2 is another embodiment schematic diagram of the seal structure of installation grid in the tower, as shown in fig. 2, there is the clearance that is greater than the design value between grid frame 2 and the adsorption separation tower wall 5, the utility model provides a seal structure of installation grid in the tower includes: grid frame 2, with grid frame top clearance fit' S type locating part 1 and sealing member 4, wherein, sealing member 4 arrange in the 1 upper portion of S type locating part, between the adjacent grid frame or in the gap between grid frame and the tower inner wall, and fill up the gap.

Fig. 4 is a sealing structure between the inner wall of the tower and the grid frame in the prior art, as shown in fig. 4, when a gap larger than a design value exists between the grid frame 2 and the wall 5 of the adsorption separation tower, a barrier strip 3 is welded on the outer side of the grid frame, a sealing element 4 is placed on the barrier strip 3, and a glass fiber rope is generally adopted. The grating frame and the inner wall of the adsorption separation tower are sealed, and the glass fiber rope is easy to drop in the operation process of the device. When the gap between the grating frame 2 and the wall 5 of the adsorption separation tower is too large, the grating block is generally lifted, and the barrier strips are welded again for sealing, so that the process is complicated.

Fig. 5 is a schematic structural diagram of an adsorption separation tower provided by the present invention, as shown in fig. 5, a multi-layer grid and an adsorbent bed are arranged in a shell of the separation tower. Each grid is typically divided into several pieces, the lower surface of the grid 8 is placed on the upper surface of the support beam 7, and the upper surface of the grid 8 is filled with the adsorbent 6. For gaps between grid blocks and gaps between grid frames and tower walls, glass fiber ropes are usually filled to prevent the loss of adsorbent or catalyst particles. However, due to the manufacturing error of the tower body, the ovality of the tower body is inevitably out of tolerance. Therefore, gaps between the grid blocks and gaps between the grids and the tower wall are difficult to ensure to be the same as the designed values, and the glass fiber ropes filled between the gaps are prone to falling off in the actual running process of the device.

The utility model provides a seal structure of installation grid in tower's advantage does:

(1) in the process of installing the grating in the tower, when a gap larger than a design value exists between the grating frame and the wall of the adsorption separation tower or between adjacent grating frames, an S-shaped limiting part in movable fit with the grating frame is used for replacing a mode of repairing and welding a barrier strip in the prior art, an installed grating block does not need to be hung out of the tower again by a crane for welding, the workload is greatly reduced, and the installation period is shortened.

(2) The adsorption tower can have the trend of tending to the circle after the device is worked on, the utility model provides a design of the S type locating part in the seal structure of installation grid has certain elasticity in the tower, ensures that there is not the clearance between grid frame and the tower inner wall, guarantees that sealed rope can not drop at the long period operation in-process of equipment. The included angle between the middle section of the S-shaped limiting piece and the vertical direction is preferably 5-45 degrees, so that the S-shaped limiting piece has certain elasticity in the gap, the gap can be filled with the S-shaped limiting piece, and the sealing piece is guaranteed not to fall off in the long-period operation process of equipment. The adsorbent is ensured not to run and be damaged, so that the purity and the yield of the product in the long-period operation process of the device are ensured.

The utility model provides a seal structure of installation grid in tower can be used for the grid internals in the chemical industry field knockout tower to the phenomenon that the adsorbent or the catalyst that guarantee the grid upper strata and load can not appear running and decrease. It should be noted that, the utility model discloses except the knockout tower that is used for the chemical industry field, can also be used to the various fields that need install grid glass fine rope's field, all fall on to this kind of application field's deformation the utility model discloses an in the protection range.

To sum up, the utility model provides a couple simple structure is ingenious, can guarantee that equipment length periodic operation rope can not drop for the adsorbent or the catalyst that the grid upper strata was loaded can not appear running the phenomenon of decreasing, guarantees the productivity and the purity of equipment length periodic operation product, consequently, the utility model provides an installation structure and the knockout tower that uses this installation structure all have higher practicality and spreading value.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the specific details of the embodiments and many variations are possible. Any simple modification, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention should be considered as belonging to the protection scope of the present invention.

Claims

1. A sealing structure for a mounting grid in a tower, comprising: grid frame (2), with grid frame top clearance fit' S type locating part (1) and sealing member (4), wherein, sealing member (4) arrange in S type locating part (1) upper portion, between the adjacent grid frame or the gap between grid frame and the tower inner wall in, and fill up the gap.

2. A sealing structure for installing grids in a tower according to claim 1, characterized in that the upper bending part of the S-shaped limiting member (1) has a width matched with the top of the grid frame, and the bottom bending part has elasticity and a width matched with the gap between the adjacent grid frames or between the grid frame and the inner wall of the tower.

3. A sealing structure for a tower internal grid according to claim 1 or 2, wherein the S-shaped stopper (1) has a height of 50-300mm and a thickness of 1-20 mm.

4. A sealing structure for a tower internal grid according to claim 1 or 2, characterized in that a barrier strip (3) is further provided outside the grid frame and below the S-shaped stopper.

5. A sealing structure for a tower internal grid according to claim 1 or 2, characterised in that said sealing member (4) is of a high temperature resistant elastomeric material.

6. A sealing arrangement for a tower internal grid according to claim 5, characterised in that said sealing means (4) is selected from glass or ceramic fibre rope.

7. A sealing structure for a tower internal grid according to claim 1 or 2, wherein said S-shaped stopper is made of carbon steel or alloy steel.

8. A sealing structure for a tower internal grid according to claim 1 or 2, wherein the angle between the middle section of the S-shaped stopper and the vertical direction is 5 ° to 45 °.

9. An adsorption separation column comprising: a separation tower shell, a fluid inlet and a fluid outlet which are arranged on the separation tower shell, and a plurality of layers of grids and adsorbent beds in the separation tower shell, wherein gaps between the outer frame of each grid and the inner wall of the separation tower shell and between the adjacent grid frames are provided with the sealing structure of the grid arranged in the tower as claimed in any one of claims 1 to 8.

10. A fixed bed reactor, comprising: the reactor comprises a reactor shell, a fluid inlet and a fluid outlet which are arranged on the reactor shell, and a plurality of layers of grids and catalyst beds in the reactor shell, wherein gaps between the outer frame of each grid and the inner wall of the reactor shell and between the adjacent grid frames are provided with the sealing structure of the grid arranged in the tower according to any one of claims 1 to 8.