CN214346497U

CN214346497U - Grid screen mounting structure, reactor and adsorption separation tower

Info

Publication number: CN214346497U
Application number: CN202022683230.6U
Authority: CN
Inventors: 赵健棋; 王少兵; 陈凤鸣; 朱振兴
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: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-10-08
Anticipated expiration: 2030-11-20

Abstract

The utility model provides a grid screen cloth mounting structure, reactor and adsorption and separation tower, grid screen cloth mounting structure include connecting plate (3), upper portion clamp plate (1) and elastic filler (5) of bottom, wherein, the outward flange of grid screen cloth (2) holds the connecting plate with the recess that upper portion clamp plate formed in, connecting plate and grid screen cloth fixed connection, upper portion clamp plate and check bars frame (4) fixed connection, the interval that connecting plate, upper portion clamp plate and check bars frame enclose is filled elastic filler. The utility model provides a mounting structure makes grid frame and grid screen cloth can use various required materials in order to satisfy intensity, can not receive the poor influence of dissimilar material inflation and guarantee that screen cloth surface does not appear the uplift, and screen cloth surface roughness meets the requirements, and the knockout tower practicality that uses this mounting structure is strong.

Description

Grid screen mounting structure, reactor and adsorption separation tower

Technical Field

The utility model relates to a chemical industry field reactor internals, more specifically relates to an install the mounting structure in the grid frame with the grid screen cloth in the knockout tower.

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 provided, the grid internal part comprises a grid screen with screening holes and a grid frame for fixing the grid screen so as to divide the space in the separation tower 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 enter the tower in sequence, 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 grid screen plays a supporting role of a bed layer, and the surface of the grid screen is usually a welded strip screen, 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.

Due to the requirements of actual operating conditions, the structure of the grid internals needs to withstand a certain pressure drop and temperature. This requires the structure of the grid internals to have the following features: 1) the grid screen is a welded strip screen structure, which allows fluid to pass through but prevents the adsorbent or catalyst particles from entering; 2) the grid frame and the internal support are of a thicker steel plate structure and have certain strength enough to support the screen to bear pressure drop.

US7906081 discloses an adsorption separation tower grid, the frame and the welded strip screen mesh of which are made of the same carbon steel material and a direct welding structure is adopted between the frame and the welded strip screen mesh. However, according to the current practical use condition, the carbon steel welding strip-shaped screen mesh is easy to rust, so that gaps are blocked, and then the pressure drop is increased, thereby influencing the normal operation. If stainless steel is adopted, the production and maintenance are facilitated. With the continuous increase of equipment, stainless steel is adopted, so that the cost is too high and the equipment is not economical.

CN203874780U discloses an install structure and knockout tower with grid screen cloth installation in grid frame, the install structure changes welding bar screen cloth material into stainless steel, and the frame material is the carbon steel, because the expansion coefficient of stainless steel and carbon steel is different, adopts U type cross-section centre gripping groove (carbon steel) and frame welding, and the outer peripheral edges of grid screen cloth hold in this centre gripping groove through interference fit part to with the centre gripping groove bottom passes through the silk screen interval and sets up. Through the scheme, the grid screen and the frame are not fixedly connected through welding, so that the grid screen and the frame are not influenced by expansion difference of different materials.

The adoption sets up the mode installation grid screen cloth in the centre gripping groove on grid frame internal perisporium in-service use, and the screen cloth passes through the interference fit centre gripping in U type cross-section groove, but the screen cloth is actually free activity, and not firmly fasten together with U type groove, because the great difference in temperature changes make the screen cloth produce deformation around the dimensional deviation of processing manufacturing and the welding of U type groove and frame, can lead to screen cloth surface uplift after the stress release, the whole roughness of screen cloth is relatively poor.

SUMMERY OF THE UTILITY MODEL

The utility model discloses one of the technical problem that solves provides a mounting structure of grid screen on prior art's basis, can use various required materials in order to satisfy intensity and can not receive the poor influence of the inflation of xenogenesis material and guarantee that the screen surface does not appear the uplift, whole roughness meet the demands.

The second technical problem to be solved by the present invention is to provide a reactor and an adsorption separation tower.

In one aspect, the utility model provides a grid screen mounting structure, including connecting plate 3, upper portion clamp plate 1 and the elastic filler 5 of bottom, wherein, grid screen's outward flange holds the connecting plate with the recess that upper portion clamp plate formed in, connecting plate and grid screen fixed connection, upper portion clamp plate and grid frame fixed connection, the interval that connecting plate, upper portion clamp plate and grid frame enclose packs the elastic filler.

The utility model provides a grid screen cloth mounting structure is in the application, earlier with connecting plate and grid screen cloth fixed connection, installs bottom connecting plate and grid screen cloth in the grid frame and the leveling, packs the elastic filler in the interval between bottom connecting plate and grid frame, then at bottom connecting plate and grid screen cloth upper surface mounting upper portion clamp plate to with upper portion clamp plate and grid frame fixed connection.

In a second aspect, the present invention provides a reactor, including grid internals, this grid internals includes grid frame, grid screen cloth and the utility model provides a grid screen cloth mounting structure, with will the grid screen cloth is installed in the grid frame.

A third aspect of the present invention provides an adsorption separation tower, including a separation tower casing, a fluid inlet and a fluid outlet provided on the separation tower casing, and a plurality of layers of grid internals and adsorbent beds provided in the separation tower casing, wherein the grid internals include a grid frame, a grid screen and any one of the above grid screen mounting structures, so as to install the grid screen in the grid frame.

The utility model provides a grid screen cloth mounting structure, reactor and adsorption and separation tower's beneficial effect does:

the utility model provides a grid screen cloth mounting structure's simple structure, simple to operate. The grating frame and the grating screen mesh can be made of various required materials to meet the strength requirement; meanwhile, when the grating frame and the grating screen are made of different materials, the influence of expansion difference can be avoided; and the surface of the screen cloth is kept free from bulging in the use process, and the integral flatness of the surface of the screen cloth meets the requirement. The reactor and the adsorption separation tower adopting the grid screen mounting structure have strong practicability.

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 cross-sectional view of an embodiment of a mounting structure for a grille screen according to the present invention.

FIG. 2 is a schematic top view of an embodiment of a grid inner.

Fig. 3 is a schematic top view of a second embodiment of a grid inner.

Fig. 4 is a schematic structural diagram of the adsorption separation column provided by the present invention.

Description of reference numerals:

1-an upper platen; 2-a grid screen; 3-connecting the plates; 4-a grid border; 5-an elastomeric filler; 6-adsorbent bed layer; 7-supporting beam.

Detailed Description

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.

The utility model provides a grid screen cloth mounting structure, connecting plate 3, upper portion clamp plate 1 and elastic filler 5 including the bottom, wherein, grid screen cloth 2's outward flange holds the connecting plate with the recess that the upper portion clamp plate formed in, connecting plate and grid screen cloth fixed connection, upper portion clamp plate and grid frame fixed connection, the elastic filler is filled in the interval that connecting plate, upper portion clamp plate and grid frame enclose.

Optionally, the connecting plate is of an L-shaped structure or an inverted T-shaped structure, and the height of the protruding portion of the connecting plate is not less than the thickness of the grille screen. Preferably, the connecting plate adopts an inverted T-shaped structure.

Optionally, the elastic filler is a high-temperature resistant elastic material, preferably a ceramic fiber rope material.

Optionally, the outer edges of the connecting plate and the upper pressing plate are straight lines or arc shapes matched with the inner peripheral wall of the grating frame.

Optionally, the connecting plate and the grid screen are made of the same material, and the grid frame and the upper pressing plate are made of the same material. Preferably, the grid screen and the connecting plate are made of stainless steel. The upper pressing plate and the grating frame are thick carbon steel or low alloy steel pieces.

Optionally, the connecting plate is welded to the grid mesh, and the upper pressing plate is welded to the grid frame.

The utility model provides a reactor, including grid internals, this grid internals includes grid frame, grid screen cloth and the utility model provides a grid screen cloth mounting structure, with incite somebody to action the grid screen cloth is installed in the grid frame.

The utility model provides an adsorption separation tower, include: the separation tower 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 grid internals and adsorbent beds in the separation tower shell, wherein the grid internals comprise a grid frame, a grid screen and a grid screen mounting structure of any one of the above, so that the grid screen is mounted in the grid frame.

Optionally, the grid inner parts are arranged on the support beams, and the lower parts of the grid screens are provided with grid fillers or adsorbent beds.

The utility model provides a grid screen cloth mounting structure is in the application, with the grid screen cloth fixed connection in advance of connecting plate and the same kind of material, installs connecting plate and grid screen cloth in the grid frame and leveling, sets up the elastic filler in the interval between connecting plate periphery and grid frame, then at bottom connecting plate and grid screen cloth upper surface mounting upper portion clamp plate to with upper portion clamp plate and grid frame fixed connection.

Preferably, the connecting plate adopts an inverted T-shaped structure, the inverted T-shaped connecting plate and the grid screen mesh made of the same material are welded and fixed in advance, elastic fillers are filled in the space between the periphery of the connecting plate and the grid frame, then the upper pressing plate is connected and fixed, and the pressing plate is welded on the grid frame made of the same material.

In the preferred embodiment of the present invention, in order to ensure the stability of the assembly and welding member after the T-shaped connecting plate 3 and the grid screen 2 are welded, an elastic filler 5 is preferably provided between the outer peripheral edge of the T-shaped connecting plate 3 and the grid frame 4. Thus, the elastic packing 5 can normally ensure the stability of the grill screen 2 and the T-shaped connecting plates 3, and when the grill screen 2 is expanded, it can be freely moved without being restricted by the grill border 4 by compressing the elastic packing 5. In addition, the elastic filler 5 can also strengthen the sealing between the pressure plate 1 and the T-shaped connecting plate 3 and prevent materials from leaking from gaps. The elastic filler 5 is preferably a high temperature resistant elastic material such as, but not limited to, a ceramic fiber rope material. All fall in the protection scope of the utility model to the various deformation mode of filler. In other embodiments, the elastic filler 5 may not be provided, and in this case, in order to ensure the stability of the grid mesh 2, the distance between the outer periphery of the T-shaped connecting plate 3 and the grid frame 4 may be designed to satisfy the expansion rate of the grid mesh 2. The protection scope of the present invention is to such deformation modes.

In the preferred embodiment of the present invention, in order to ensure the strength and life of the grid mesh 2, preferably, the grid mesh 2 is a stainless steel mesh member, more preferably a stainless steel welded bar mesh member, i.e., can be formed by welding stainless steel bars, so as to ensure the strength of the grid mesh. However, the present invention is not limited thereto, and the grille screen made of other materials in the field is within the protection scope of the present invention.

To sum up, the utility model provides a mounting structure's simple structure can be so that grid screen 2 and grid frame 4 adopt arbitrary material in order to keep intensity and economic nature to do not receive the poor influence of dissimilar material expansibility and guarantee that the screen cloth surface does not appear the uplift, the whole roughness in screen cloth surface meets the requirements, consequently, the utility model provides a mounting structure and the knockout tower that uses this mounting structure all have higher practicality and spreading value.

The utility model provides a grid screen cloth mounting structure can be used for the interior grid internals of chemical industry field adsorption and separation tower to guarantee the effect and the economic nature of adsorbent and catalyst granule simultaneously. It should be noted that, the utility model discloses except being used for the knockout tower in chemical industry field, can also be used to the various fields that need install the field of grid screen cloth of other fields, all fall on to this kind of application field's deformation the utility model discloses an in the protection range.

The utility model provides a grid screen cloth mounting structure and adsorption separation tower who sets up this mounting structure are further explained with the attached drawing in the following.

Fig. 1 is a schematic cross-sectional view of an embodiment of a mounting structure for a grille screen according to the present invention. As shown in the attached drawing 1, the utility model provides a grid screen mounting structure includes connecting plate 3, upper portion clamp plate 1 and the elastic filler 5 of bottom, wherein, connecting plate 3 for falling T type structure, grid screen 2's outward flange hold connecting plate 3 with the recess that upper portion clamp plate 1 formed in, connecting plate 3 and grid screen 2 fixed connection, upper

portion clamp plate

1 and 4 fixed connection of grid frame, the interval setting between the outer circumference of connecting plate 3 and grid frame 4 the interval that connecting plate 3, upper portion clamp plate 1 and grid frame 4 enclose packs elastic filler 5.

FIG. 2 is a schematic top view of one embodiment of a grid inner. Fig. 3 is a schematic top view of a second embodiment of a grid inner. As shown in fig. 2 and 3, the grid inner member can be implemented in various forms, such as a circle, a sector or a polygon. In the attached drawing 2, the grid internals of the adsorption and separation tower are fan-shaped, and the grid frame is fan-shaped, the utility model provides an in the mounting structure of grid screen, the connecting plate and the outward flange of upper portion clamp plate 1 with grid frame 4 cooperate, set up elastic packing or sealing member between connecting plate and grid frame 4, set up adsorbent bed or filler in the upper portion and the lower part of grid screen 2. As shown in fig. 3, the grid inner member has an irregular shape with an arc-shaped edge, and similarly, the connecting plate and the outer edge of the upper pressing plate 1 are matched with the grid frame 4.

Fig. 4 is a schematic structural diagram of the adsorption separation tower provided by the present invention, as shown in fig. 4, a multilayer grid and an adsorbent bed are arranged in the separation tower shell. Each grid is typically divided into several pieces and the lower surface of the grid frame 4 is placed on the upper surface of the support beams 7 and the upper surface of the grid is filled with adsorbent 6. The grid internals comprise a grid screen with screening holes and a grid frame fixing the grid screen to divide the space in the separation column into several adsorbent or catalyst beds. The grid screen plays a supporting role of a bed layer, and the surface of the grid screen is usually a welded strip screen, 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.

Therefore, the utility model provides a grid screen cloth mounting structure's advantage does: the grid screen 2 is fixed on the T-shaped connecting plate 3 made of the same material by welding, but is not fixed by means of clamping, and is not welded with the grid frame 4 made of different materials. Therefore, the grid frame 4 and the grid screen 2 can use various required materials to meet the strength and can not be influenced by the expansion difference of different materials and ensure that the surface of the screen does not bulge, and the integral flatness of the surface of the screen meets the requirement.

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.

The following examples further illustrate the mounting structure and applications of the barrier screen of the present invention, but the present invention is not limited thereto.

Example 1

The adsorption separation tower adopts a structure shown in figure 4, a plurality of layers of grids and adsorbent beds are arranged in a shell of the separation tower, the beds are separated by grid nets, each layer of grids is divided into a plurality of fan-shaped grid internal parts shown in figure 2, and grid screens are arranged in the grid internal parts and fixed on grid walls by mounting structures. The mounting structure of the grating screen is shown in figure 1, the connecting plate is of an inverted T-shaped structure, the width of the connecting plate is 18mm, the height of the protrusion is 7mm, the height of the upper pressing plate is 8mm, and the height of the grating screen is 6.5 mm. The outer edges of the connecting plate and the upper pressing plate are matched with the inner peripheral wall of the grating frame. And filling ceramic fiber rope materials in the space between the connecting plate and the grid wall. The grid screen and the connecting plate are made of stainless steel. The upper pressing plate and the grating frame are thick carbon steel or low alloy steel pieces.

The adsorption separation tower is used for separating alkane or polycyclic isomer C8 aromatic hydrocarbon which cannot be separated by conventional rectification and has similar boiling point components, the grid-separated multi-bed adsorption separation tower and the simulated moving bed technology can be used for replacing the rectification tower to realize low-energy-consumption and high-efficiency separation of the similar boiling point components, and the phenomenon that a sieve mesh is partially bulged does not occur in the using process.

Claims

1. The utility model provides a grid screen cloth mounting structure, its characterized in that includes connecting plate (3), upper portion clamp plate (1) and the elastic filler (5) of bottom, wherein, the outward flange of grid screen cloth (2) hold the connecting plate with the recess that the upper portion clamp plate formed in, connecting plate and grid screen cloth fixed connection, upper portion clamp plate and grid frame (4) fixed connection, the interval that connecting plate, upper portion clamp plate and grid frame enclose is filled the elastic filler.

2. The grille screen mounting structure of claim 1, wherein the connecting plate has an L-shaped configuration or an inverted T-shaped configuration, and a height of the projecting portion of the connecting plate is not less than a thickness of the grille screen.

3. The grille screen mounting structure of claim 1, wherein the resilient filler is selected from the group consisting of ceramic cord materials.

4. The grille screen mounting structure of claim 1, wherein outer edges of the connecting plate and the upper platen are curved to fit an inner peripheral wall of the grille frame.

5. The grille screen mounting structure of claim 1, wherein the connecting plate and the grille screen are made of the same material, and the grille frame and the upper pressing plate are made of the same material.

6. The grille screen mounting structure of claim 5, wherein the grille screen and the attachment plate are stainless steel.

7. The grid screen mounting structure according to claim 5, wherein the upper hold down plate and the grid surround are thick carbon steel or low alloy steel pieces.

8. The grille screen mounting structure of claim 1, wherein the attachment plate is welded to the grille screen and the upper clamp plate is welded to the grille frame.

9. A reactor comprising a grid inner including a grid surround, a grid screen, and the grid screen mounting structure of any one of claims 1-8 for mounting the grid screen within the grid surround.

10. An adsorption separation column, comprising: a separator column housing, a fluid inlet and a fluid outlet disposed on the separator column housing, and a plurality of layers of grid internals and adsorbent beds within the separator column housing, the grid internals comprising a grid frame, a grid screen, and the grid screen mounting structure of any of claims 1-8, to mount the grid screen within the grid frame.