CN210545019U

CN210545019U - Radial flow reactor and tube box structure thereof

Info

Publication number: CN210545019U
Application number: CN201921056298.2U
Authority: CN
Inventors: 张学文; 罗永智; 高宁; 卢艳玲
Original assignee: Lanzhou LS Heavy Equipment Co Ltd
Current assignee: Lanzhou LS Heavy Equipment Co Ltd
Priority date: 2019-07-08
Filing date: 2019-07-08
Publication date: 2020-05-19
Anticipated expiration: 2029-07-08

Abstract

The utility model relates to a radial flow reactor and a tube box structure thereof, wherein the tube box structure comprises a seal head (3), an annular tube plate (1) and a sleeve (2), and the three form an annular tube box space; the top of the end socket is provided with a shell pass medium inlet (6) at a position corresponding to the opening of the sleeve, and a tube pass medium inlet (5) or a tube pass medium outlet (4) is arranged at a position corresponding to the space of the tube box. The utility model discloses with drawing forth of tube bank tube head in the pipe case space design for overall structure, the heat exchange tube can adopt ordinary straight tube, both ends to need not the bending, and the requirement that both ends head shell side medium flowed in has been satisfied to the middle cavity passageway of pipe case simultaneously. The utility model discloses pipe box structure's simple structure, it is convenient to make, greatly reduced the design and make the degree of difficulty. In addition, the annular space of the tube box is additionally provided with an access hole, so that the convenience in maintenance is greatly improved. The utility model discloses methanol synthesis equipment has very big advantage in the synthetic production line of methyl alcohol in coal chemical industry field.

Description

Radial flow reactor and tube box structure thereof

Technical Field

The utility model relates to a radial flow reactor technical field especially relates to a radial flow reactor and tube box structure thereof.

Background

Along with the large-scale production of the coal chemical industry, the methanol synthesis reaction device of the coal chemical industry process is also developed to be large-scale, wherein the British Davy radial flow methanol synthesis reactor is widely used due to the advantages of high efficiency, compact structure and the like in the large-scale methanol reaction.

The radial flow methanol synthesis reactor is internally integrated with a tube bundle with the function of bringing heat out, a tube side medium flows in from a seal head at one end and flows out from a seal head at the other end, and a shell side medium flows in from seal heads at two ends and flows out from a shell side medium outlet on the shell after flowing radially through the shell central tube distributor. However, it has the following disadvantages:

(1) in the tube box structure space between the seal head and the tube plate, small tube plates are required to be arranged at two ends of the tube bundle in the shell to collect and lead out tube side media and collect shell side media, the structure is complex, and great difficulty is brought to design and manufacture.

(2) In order to adapt to collection and extraction of the independent small tube plates, two ends of the heat exchange tube are required to be bent, and the heat exchange tube can not be replaced if the heat exchange tube leaks in the final hydrostatic test, the tube hole of the heat exchange tube can only be blocked, the precision of the bent tube of the heat exchange tube also directly influences the assembly of the tube bundle, and if the size precision of the bent tube is insufficient, the heat exchange tube interference can be caused to cause assembly difficulty.

(3) The maintenance space of the independent small tube plate head is small, and great difficulty is brought to the tube head maintenance.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a radial flow reactor and tube box structure thereof, the simple structure of this tube box structure, convenient manufacturing.

In order to solve the above problems, the tube box structure of the radial flow reactor of the present invention comprises a head, an annular tube plate arranged between the head and a reactor shell, and a sleeve with one end arranged on an inner ring of the annular tube plate and the other end arranged on the top of the head, wherein the three form an annular tube box space; the annular tube plate is characterized in that an annular body of the annular tube plate is used for penetrating through the end part of a straight tube of the tube bundle, a shell pass medium inlet is arranged at the position, corresponding to the opening of the sleeve, of the top of the seal head, and a tube pass medium inlet or a tube pass medium outlet is arranged at the position, corresponding to the space of the tube box, of the top of the seal head.

Preferably, a detachable access hole is further formed in the position, corresponding to the pipe box space, of the top of the seal head.

The utility model also provides a radial flow reactor, including interlude and the pipe case structure of setting at this interlude both ends, the interlude includes the casing, establishes the inside tube bank of casing and the shell side structure of realizing radial flow, be equipped with shell side medium export on the casing, its characterized in that, the tip of tube bank is the straight tube, the pipe case structure at interlude both ends is above-mentioned pipe case structure, and one end pipe case structure sets up according to pipe side medium entry, shell side medium entry, and other end pipe case structure sets up according to pipe side medium export, shell side medium entry.

Compared with the prior art, the utility model has the following advantage:

1. the utility model discloses in, carry out redesign to current pipe case independent tube sheet district and return bend district, through the annular tube sheet, annular pipe case space is constructed to sleeve pipe and head, with drawing forth the design of tube bank tube head in the pipe case space for overall structure, for wearing to establish the condition that provides of tube bank straight tube tip, the heat exchange tube can adopt ordinary straight tube, both ends need not the bending, the problem that needs carry out the bending and bring with the tube bank both ends among the prior art has been overcome, and simultaneously, the hollow channel of sleeve pipe and annular tube sheet inner circle formation in the middle of the pipe case, the requirement of both ends head shell side medium inflow has been satisfied. It is thus clear that compare prior art, the utility model discloses the simple structure of pipe case structure, it is convenient to make, greatly reduced the design and make the degree of difficulty, improve product economy.

2, the utility model discloses in, pipe case annular space can provide sufficient space for the tube head overhauls, consequently still is provided with the detachable access hole in the position that head top and pipe case space correspond, compares maintenance space in the past little and need cut tube sheet outside pipeline and carry out the maintenance of pipe heat pipe tube head, has improved the maintenance convenience greatly.

3. The utility model discloses methanol synthesis equipment has very big advantage in the synthetic production line of methyl alcohol in coal chemical industry field.

Drawings

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a medium radial flow reactor and a tube box structure thereof.

Fig. 2 is a schematic structural diagram of the middle ring-shaped tube plate of the present invention.

Fig. 3 is a schematic diagram of the space occupied by the medium flow in the middle tube box structure of the present invention.

In the figure: 1-annular tube plate, 2-sleeve, 3-end enclosure, 4-tube pass medium outlet, 5-tube pass medium inlet, 6-shell pass medium inlet, 7-shell pass medium outlet, 8-access hole, 9-shell; s-channel structure medium circulation occupies space.

Detailed Description

Referring to fig. 1 to 3, an embodiment of the present invention provides a tube box structure of a radial flow reactor, which mainly includes a head 3, an annular tube plate 1 and a sleeve 2, which are coaxially arranged; the annular tube plate 1 is arranged between the seal head 3 and the reactor shell 9, and the annular body of the annular tube plate is used for penetrating through the end part of the straight tube of the tube bundle; one end of the sleeve 2 is arranged on the inner ring of the annular tube plate 1, and the other end of the sleeve 2 is arranged on the top of the seal head 3; the inner wall of the seal head 3, the side wall of the annular tube plate 1 facing the seal head 3 and the outer wall of the sleeve 2 form an annular tube box space together. The top of the end socket 3 is provided with a shell pass medium inlet 6 at a position corresponding to the opening of the sleeve 2, and a shell pass medium enters the middle section of the reactor through the shell pass medium inlet 6, the inner space of the sleeve 2 and the inner ring space of the annular tube plate 1 to realize a radial flow shell pass structure.

The tube pass medium inlets 5 or the tube pass medium outlets 4 are arranged at the top of the end enclosure 3 at positions corresponding to the tube box space, namely, the tube box space can lead out the tube pass medium from a plurality of tube pass medium outlets 4 at the upper part of the end enclosure 3 and can also distribute the medium in the tube pass medium inlets 5 into the whole tube bundle. Specifically, the tube-side medium enters the tube bundle in the middle section of the reactor via the tube-side medium inlet 5, the space of the tube box, the tube bundle end on the annular tube sheet 1, and vice versa. Furthermore, a detachable access opening 8 is formed in the position, corresponding to the space of the pipe box, of the top of the seal head 3. For example, the access hole 8 is directly welded with the seal head 3, and only the port flange cover needs to be detached when the maintenance is needed.

In the actual manufacturing process, the center of the annular tube plate 1 is provided with an annular straight head which protrudes upwards, so that the annular tube plate is convenient to butt with the sleeve 2; projecting lines are provided at each inlet and outlet, see fig. 3, where the slash hatching represents the space S occupied by the media flow-through in the channel structure; the components are connected by adopting a welding mode; because the tube plate is an integral annular tube plate, the tube bundle flow channel is also a conventional flow channel, the corresponding heat exchange tube is directly manufactured by straight tubes in a tube penetrating mode, and the reactor and the tube bundle can meet the design requirements by adopting a common two-dimensional design (in the prior art, a tube bundle elbow is designed by using a three-dimensional software tool, and the requirement on the manufacturing precision of the elbow is high).

Based on the tube box structure disclosed in the above content, the embodiment of the present invention correspondingly provides a radial flow reactor, which includes a middle section and the tube box structures arranged at two ends of the middle section, wherein the middle section includes a shell 9, a tube bundle arranged inside the shell 9 and a shell side structure for realizing radial flow, and a shell side medium outlet 7 is arranged on the shell 9; it can be understood that the end part of the tube bundle is a straight tube and penetrates through the annular tube plate 1; at two ends of the reactor, one end of the tube box structure is arranged according to a tube side medium inlet 5 and a shell side medium inlet 6, and the other end of the tube box structure is arranged according to a tube side medium outlet 4 and a shell side medium inlet 6. During operation, a tube-side medium flows in from the end socket at one end and flows out from the end socket at the other end, a shell-side medium flows in from the end sockets at the two ends and flows out from the shell-side medium outlet 7 on the shell 9 after flowing radially in the shell, and the more detailed contents refer to the above.

It should be noted here that, for the radial flow reactor and the tube box structure thereof provided by the present invention, in addition to the above, other implementation means can be obtained by referring to the prior art.

The technical scheme provided by the utility model is introduced in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the structure and core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. A tube box structure of a radial flow reactor is characterized by comprising an end socket (3), an annular tube plate (1) arranged between the end socket (3) and a reactor shell (9) and a sleeve (2) with one end arranged on an inner ring of the annular tube plate (1) and the other end arranged at the top of the end socket (3), wherein an annular tube box space is formed by the three components; the annular tube plate is characterized in that an annular body of the annular tube plate (1) is used for penetrating through the end part of a straight tube of the tube bundle, a shell side medium inlet (6) is arranged at the top of the seal head (3) at a position corresponding to an opening of the sleeve (2), and a tube side medium inlet (5) or a tube side medium outlet (4) is arranged at a position corresponding to the tube box space.

2. Channel structure according to claim 1, characterized in that the top of the closure (3) is provided with a removable access opening (8) at a position corresponding to the channel space.

3. A radial flow reactor comprises an intermediate section and tube box structures arranged at two ends of the intermediate section, wherein the intermediate section comprises a shell (9), a tube bundle arranged in the shell (9) and a shell pass structure for realizing radial flow, a shell pass medium outlet (7) is arranged on the shell (9), the radial flow reactor is characterized in that the end part of the tube bundle is a straight tube, the tube box structures at two ends of the intermediate section are the tube box structures according to claim 1 or 2, one end of the tube box structure is arranged according to a tube pass medium inlet (5) and a shell pass medium inlet (6), and the other end of the tube box structure is arranged according to a tube pass medium outlet (4) and a shell pass medium inlet (6).