阅读说明：本技术 一种甲醇合成塔用支撑板及其制造方法 (Supporting plate for methanol synthesis tower and manufacturing method thereof ) 是由 邱露 冯友茵 王彬 李魁 王智拓 于 2019-09-30 设计创作，主要内容包括：本发明公开了一种甲醇合成塔用支撑板,所述支撑板包括若干行支撑孔,相邻两行支撑孔交错排列,每个支撑孔周围围绕六个类三角形通孔,相邻两个支撑孔间通过筋板连接；所述支撑板由若干梳型支撑条依次叠加形成,支撑条上两个平行的板面上交错地设置半圆形凹槽,支撑孔由相邻两个支撑条上的半圆形凹槽相互拼接而成。本发明中,通过支撑条拼接形成支撑板,解决了空间弯曲的换热管不易穿管的问题,能够大幅提高穿管的效率；而且,在支撑条的非布管区开设类三角形通孔,相邻圆管之间通过筋板连接加强,能够保证换热介质的通过性和支撑板的结构强度。(The invention discloses a supporting plate for a methanol synthesis tower, which comprises a plurality of rows of supporting holes, wherein two adjacent rows of supporting holes are staggered, six triangular through holes surround each supporting hole, and two adjacent supporting holes are connected through a rib plate; the backup pad is formed by stacking in proper order a plurality of comb type support bars, sets up semicircular groove on the face of two parallels on the support bar crisscross, and the support hole is formed by the mutual concatenation of semicircular groove on two adjacent support bars. In the invention, the support bars are spliced to form the support plates, so that the problem that the heat exchange tubes bent in space are difficult to penetrate is solved, and the tube penetrating efficiency can be greatly improved; and moreover, the triangular through holes are formed in the non-pipe distribution area of the support bar, and the adjacent circular pipes are connected and reinforced through the rib plates, so that the passing performance of the heat exchange medium and the structural strength of the support plate can be ensured.)

1. A supporting plate for a methanol synthesis tower is characterized in that: the supporting plate comprises a plurality of rows of supporting holes, every two adjacent rows of supporting holes are arranged in a staggered mode, six triangular through holes surround each supporting hole, and every two adjacent supporting holes are connected through a rib plate; the backup pad is formed by stacking in proper order a plurality of comb type support bars, sets up semicircular groove on the face of two parallels on the support bar crisscross, and the support hole is formed by the mutual concatenation of semicircular groove on two adjacent support bars.

2. The support plate of claim 1, wherein: at least part of the edge of the supporting plate is provided with a connecting reinforcement.

3. The support plate of claim 2, wherein: the cross section of the connecting reinforcement is L-shaped, circular, I-shaped or rectangular.

4. The support plate according to any one of claims 1-3, wherein: the supporting holes adopt a triangular pipe arrangement mode, and the shape of the triangle-like through holes is similar to an equilateral triangle; or the supporting holes adopt a corner square pipe arrangement mode, and the triangular through holes are approximately isosceles right triangles in shape.

5. The support plate according to any one of claims 1-3, wherein: the whole supporting plate is circular, circular or polygonal.

6. The support plate according to any one of claims 1-3, wherein: the supporting holes are used for fixing the heat exchange tubes or the reaction tubes, and the triangular through holes are used for allowing heat exchange media, reaction media or catalysts to pass through.

7. The support plate according to any one of claims 1-3, wherein: the shape of the supporting hole is matched with the external shape of the heat exchange tube or the reaction tube.

8. A method for manufacturing a support plate according to any one of claims 1 to 7, comprising the steps of:

step S1: selecting or processing and manufacturing support bars with corresponding heights according to the pipe arrangement distance and the pipe arrangement mode;

step S2: processing semicircular grooves and triangle-like through holes on two plate surfaces of the supporting bar, cutting out the supporting bar with corresponding length according to the integral shape and size of the supporting plate, and finishing the shapes of two ends of the supporting bar;

step S3: assembling the supporting bars and the heat exchange tubes/reaction tubes, sequentially assembling the supporting bars and the heat exchange tubes/reaction tubes layer by layer, namely installing a first layer of heat exchange tubes/reaction tubes on a first layer of supporting bars, then installing a second layer of supporting bars on the first layer of heat exchange tubes/reaction tubes, and connecting the first layer of supporting bars and the second layer of supporting bars, so that the semicircular grooves of two adjacent supporting bars wrap the heat exchange tubes/reaction tubes, and so on until the supporting bars on the uppermost layer are installed, and forming a tube bundle penetrating through the whole supporting plates.

9. The manufacturing method according to claim 8, characterized in that: and after the supporting plate is assembled, a connecting reinforcement is arranged at the edge of the supporting plate.

10. The manufacturing method according to claim 8, characterized in that: the support bars are formed by processing flat steel bars or steel plates, and adjacent support bars are welded with each other.

Technical Field

The application relates to a support plate, in particular to a support plate for a methanol synthesis tower and a manufacturing method thereof, and belongs to the field of reactors/heat exchangers.

Background

The support plate is an important component in the heat exchanger/reactor, and has the functions of supporting, guiding, preventing vibration and the like. The backup pad among the prior art is mostly overall structure, forms the tube bank through the poling process with its hole of inserting the backup pad after prebending the heat exchange tube, however, to the irregular heat exchange tube of shape, can't penetrate in the backup pad of trompil in advance after the prebending. In the prior art, the problem that irregular heat exchange tubes cannot be penetrated is solved by making the support plates into a splicing form, however, in order to ensure the support strength, the support plates are often integrally flat after being spliced, the passing performance of media such as gas and liquid is poor, in addition, the support plates are made into thin sheets, meshes or rods and have strong permeability, but the strength of the support plates is weak, and the requirement of large-scale equipment cannot be met.

The methanol synthesis tower is a large-scale core device in a methanol device, and for part of the methanol synthesis tower, the middle part of the methanol synthesis tower is arranged into a circular tube bundle, two ends of the methanol synthesis tower are respectively integrated into four tube bundles by using circular tube plates, and finally the four tube bundles are converted into four inlets and four outlets by seal heads. The middle section of the heat exchange tube is a straight tube, two ends of the heat exchange tube are respectively bent and contracted towards the four collecting tube plates, and the bending angle and the direction of each heat exchange tube are different. Because the middle part of the heat exchange tube needs to be provided with the supporting plate to support the tube bundle, the whole supporting plate is adopted like the traditional heat exchanger/reactor, and the tube penetration of the tube bundle can not be implemented; secondly, catalysts are required to be uniformly filled in the collector shell of the methanol synthesis tower and outside the heat exchange tubes, and synthesis gas is required to pass through the collector shell and the heat exchange tubes, while the whole support plate is not provided with channels for the catalysts and the synthesis gas to pass through; in addition, the support plate with strong trafficability is weak in strength, and cannot meet the support requirements of the large methanol synthesis tower in the manufacturing, transporting and installing processes. Therefore, a support plate with better strength is needed to solve the problem of irregular heat exchange tube penetration in equipment such as a methanol synthesis tower and the like and the problems of catalyst filling and synthesis gas passing.

Disclosure of Invention

Aiming at the existing problems, the invention provides a supporting plate for a methanol synthesis tower, which adopts a block splicing comb-shaped structure, is used for reaction/heat exchange equipment such as the methanol synthesis tower and the like, and solves the tube penetrating problem of a bent heat exchange tube/reaction tube and the technical problems of low permeability and insufficient supporting strength of the supporting plate.

The technical scheme adopted by the invention is as follows:

a supporting plate for a methanol synthesis tower comprises a plurality of rows of supporting holes, wherein two adjacent rows of supporting holes are arranged in a staggered manner, six triangular through holes surround each supporting hole, and two adjacent supporting holes are connected through a rib plate; the backup pad is formed by stacking in proper order a plurality of comb type support bars, sets up semicircular groove on the face of two parallels on the support bar crisscross, and the support hole is formed by the mutual concatenation of semicircular groove on two adjacent support bars.

The plurality of comb-shaped supporting bars are spliced to form the supporting plate, the heat exchange tube can be completely wrapped by the two mutually spliced semicircular grooves, and the tube penetrating problem of the spatially bent heat exchange tube can be effectively solved; the medium through holes of the triangular through holes are arranged to increase the passing performance of the heat exchange medium, the rib plates between two adjacent supporting holes form one of three edges of the triangular through holes, and the triangular structure has the advantage of stable structure, so that the strength of the supporting plates can be increased while the passing performance of the heat exchange medium is ensured.

Further, at least a partial area of the edge of the supporting plate is provided with a connection reinforcing member, for example, the connection reinforcing member continuously or intermittently surrounds 1/2 edge of the supporting plate, or surrounds the whole edge of the supporting plate to be annular as a whole, and is used for connection between the supporting bars and plays a role of reinforcement;

furthermore, the cross section of the connecting reinforcement is L-shaped, circular ring-shaped, I-shaped or rectangular, for example, the connecting reinforcement can be L-shaped steel, round pipe, channel steel or I-shaped steel which is made into a structure which is integrally in a ring shape and is connected with the edge of the supporting plate.

Furthermore, the supporting holes adopt a triangular pipe distribution mode, and the shape of the triangle-like through holes is similar to an equilateral triangle; or the supporting holes adopt a corner square pipe arrangement mode, and the triangular through holes are approximately isosceles right triangles in shape.

Furthermore, the whole supporting plate is circular, circular or polygonal, and the shape of the supporting plate can be selected according to actual requirements.

Furthermore, the supporting holes are used for fixing the heat exchange tubes or the reaction tubes, and the triangular through holes are used for allowing heat exchange media, reaction media or catalysts and other media to pass through.

Further, the shape of the support hole is matched with the external shape of the heat exchange tube or the reaction tube, and specifically, the support hole can be a polygon such as a triangle, a quadrangle and the like, or other shapes which may be used.

In addition, the invention also provides a manufacturing method of the support plate, which comprises the following steps:

step S1: selecting or processing and manufacturing support bars with corresponding heights according to the pipe arrangement distance and the pipe arrangement mode;

step S2: processing semicircular grooves and triangle-like through holes on two plate surfaces of the supporting bar, cutting out the supporting bar with corresponding length according to the integral shape and size of the supporting plate, and finishing the shapes of two ends of the supporting bar;

step S3: assembling the supporting bars and the heat exchange tubes/reaction tubes, sequentially assembling the supporting bars and the heat exchange tubes/reaction tubes layer by layer, namely installing a first layer of heat exchange tubes/reaction tubes on a first layer of supporting bars, then installing a second layer of supporting bars on the first layer of heat exchange tubes/reaction tubes, and connecting the first layer of supporting bars and the second layer of supporting bars, so that the semicircular grooves of two adjacent supporting bars wrap the heat exchange tubes/reaction tubes, and so on until the supporting bars on the uppermost layer are installed, and forming a tube bundle penetrating through the whole supporting plates.

Further, after the support plates are assembled, connection reinforcements are installed on the edges of the support plates, for example, the connection reinforcements can be made of L-shaped steel or flat steel, and are used for connecting the support plates and preferably welding the support plates on the methanol synthesis tower.

Furthermore, the support bars are formed by processing flat steel bars or steel plates, and adjacent support bars are welded with each other.

Two adjacent support bars pass through modes fixed connection such as welding, can improve the intensity of backup pad to the peripheral whole connection reinforcement that is annular L shaped steel or band steel and make of backup pad can further strengthen the intensity of backup pad.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. the support plates are spliced to form the support plates, the problem that the heat exchange tubes bent in space are difficult to penetrate is solved, and the pipe penetrating efficiency can be greatly improved.

2. Set up type triangle-shaped through-hole in the non-stringing district of support bar, connect through the gusset between the adjacent supported hole and strengthen, can enough guarantee heat transfer medium's trafficability characteristic, effectively solve catalyst, synthetic gas etc. can't pass through the technical problem of traditional backup pad, the stringing mode of triangle-shaped/corner square combines together with gusset connection support structure in addition, can also improve the support intensity of backup pad when guaranteeing trafficability characteristic.

3. The supporting plate has the advantages of simple structure, easy installation and low manufacturing difficulty.

The technical effects are embodied as follows: the triangular through hole in the middle of the support plate in the non-tube distribution area enables the upper part and the lower part of the support plate (when the equipment actually works, the direction of the heat exchange tube is vertical, namely the direction perpendicular to the paper surface of the figure 1 is the upper direction and the lower direction in the working space) to form a communicated channel, the catalyst can smoothly pass through the support plate, is uniformly filled and can smoothly settle, and the synthesis gas can also flow through the mutually communicated reaction areas. A rib plate structure is adopted between the adjacent semicircular grooves, so that the heat exchange tube can be effectively supported, and the strength of the supporting plate is ensured; in addition, in the assembled supporting plate, each heat exchange tube is wrapped by two semicircular grooves, so that the heat exchange tubes can be effectively positioned. The whole supporting plate is of a honeycomb-like structure, six rib plates are uniformly distributed on each heat exchange tube along the circumferential direction, and the heat exchange tubes can be supported from all directions; and six rib plates are oppositely connected in series two by two to form three straight lines, and the stress analysis and calculation show that the support plate structure can enable the support strength of each heat exchange tube to be higher, and when the heat exchange tubes are more and longer, the support plate structure can still effectively support the tube bundle. In addition, because the rib plates are uniformly and regularly distributed, the heat exchange tube is well supported in the use process, and in the manufacturing, transporting and installing processes, even the tube bundle or the methanol synthesis tower is rotated by a certain angle, the good support can be provided. Due to the advantages of the supporting plate structure, on the premise of meeting the supporting strength, the width and the thickness of the rib plate can be reduced properly, the flow area of the through hole is further increased, and the stable operation of the synthesis reaction is ensured.

Drawings

FIG. 1 is a schematic view of a connection structure of a support plate after support bar assembly;

fig. 2 is a schematic structural view of a single support bar.

The heat exchange tube comprises a support plate 1, a support hole 2, a rib plate 3, a triangular through hole 4, a heat exchange tube 5 and an L-shaped ring 6.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

Referring to fig. 1-2, the invention relates to a support plate 1 for a methanol synthesis tower, which comprises a plurality of rows of support holes 2 for fixing heat exchange tubes 5, wherein two adjacent rows of support holes 2 are arranged in a staggered manner, two adjacent rows of support holes 2 are connected through rib plates 3, and six triangular-like through holes 4 are surrounded around each support hole 2 for heat exchange media to pass through. The supporting plate 1 is formed by sequentially superposing a plurality of comb-shaped supporting strips, semicircular grooves are arranged on two plate surfaces of the supporting strips in a staggered mode, and the supporting holes 2 in the supporting plate are formed by mutually splicing the semicircular grooves in the two adjacent supporting strips.

The support plate as a whole may be of circular, circular or polygonal configuration, such as rectangular, triangular or regular hexagonal, but may also be of other shapes as used in heat exchangers/reactors. In this embodiment, the support bars are welded to form a circular support plate 1, and the support plate 1 is integrally connected to the inside of the methanol synthesis tower through a connection reinforcement member having a circular ring shape. The effect of the annular connection reinforcing part lies in that the connection and the reinforcement effect are realized between the supporting bars, the connection effect is realized between the supporting plates and the methanol synthesis tower, the connection reinforcing part can also be manufactured by steel materials such as flat steel, round tubes, channel steel or I-shaped steel, and the connection and the reinforcement effect can also be realized.

The tube distribution mode on the inner support plate of the heat exchanger can be regular triangle, corner regular triangle, square arrangement or corner square arrangement, and different tube distribution modes correspond to different design rules. For example, with the present invention, when the support holes in the support plate are in a triangular tube arrangement manner, the cross-sectional shape of the triangle-like through holes is approximately an equilateral triangle; when the supporting holes in the supporting plate adopt a corner square pipe arrangement mode, the cross section of the triangle-like through holes is approximately in the shape of an isosceles right triangle. Specifically, in the embodiment of the drawings, when the support holes in the support plate 1 are in a triangular tube distribution mode, the shape of the triangle-like through holes is approximately an equilateral triangle.

The shape of the supporting hole can be a circular structure, can also be a polygonal structure, such as a triangular structure, a square structure, a rectangular structure, a regular hexagonal structure and the like, and can also be other types of structures matched with the external shape of the heat exchange tube. In this embodiment, the heat exchange tube is a circular tube, and thus the support hole is also a circular support hole.

The manufacturing method of the support plate 1 comprises the following steps:

step S1: processing the steel plate into support bars according to the pipe arrangement distance and the pipe arrangement mode, and intercepting the support bars with actually required height; in the step, the support bar can be processed off site, but the support bar product with the corresponding height is directly selected, and the support bar can also be processed by a flat steel bar; it should be noted that the "height" can be understood as the height of an equilateral triangle formed by the centers of the three support holes in fig. 2 in one embodiment;

step S2: processing semicircular grooves and triangle-like through holes 4 on two plate surfaces of the supporting bar, cutting out the supporting bar with corresponding length according to the integral shape and size of the supporting plate, and finishing the shapes of two ends of the supporting bar;

step S3: equipment support bar and heat exchange tube 5, assemble support bar and 5 successive layers of heat exchange tube in proper order, install first layer heat exchange tube 5 on first layer support bar promptly, then install second layer support bar on first layer heat exchange tube 5, connect the preferred welding first layer support bar and second layer support bar for the semicircular groove of two support bars forms supporting hole 2 and wraps up heat exchange tube 5, analogize so on, and the installation is accomplished until adorning the superiors' support bar, forms the tube bank that runs through monoblock backup pad 1.

Step S4: after the supporting plate 1 is assembled, the edge of the supporting plate 1 is connected with a connection reinforcing part which is integrally in a circular ring shape and made of L-shaped steel, the whole part is embedded in the methanol synthesis tower and connected with the methanol synthesis tower, and the inside of the methanol synthesis tower is connected with the supporting plate through the connection reinforcing part and/or the edge of the supporting plate.

The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.