A string reactor having integral mounting stand and fine adjustment collar

Abstract

The present application relates to petrochemical equipment technical field, specifically to a kind of whole installation support and fine adjustment support ring's string pipe reactor, including multiple straight pipes, jacket communication pipe, elbow and installation support, and the outer tube of multiple straight pipes is arranged in installation support.Installation support is integral structure, and integral installation support combines all straight pipes to same installation support, so that supporting structure strength obtains a balanced platform, and the surplus structural strength is utilized by adjacent insufficient structure, so that the total structural strength demand is reduced, and lightweight design is realized.The outside of each straight pipe is respectively fixed with fine adjustment support ring, and the gap between fine adjustment support ring and the top panel of installation support can be adjusted before being fixed, so as to adjust the end sealing surface height of straight pipe.Fine adjustment support ring plays the role of positioning and adjusting the height of straight pipe, so that the end sealing surface of adjacent two straight pipes can be adjusted to the same height, and the connection with elbow reaches the specified strength and sealing performance.

Description

Technical Field

[0001] This invention relates to the field of petrochemical equipment technology, specifically to a serial tube reactor with an integral mounting support and a fine-tuning support ring. Background Technology

[0002] Polypropylene and polyethylene are the most widely produced and consumed general-purpose synthetic resins. There are three main production technologies for them: slurry polymerization, gas-phase polymerization, and solution polymerization. The slurry polymerization process is the primary method, and it can be further divided into stirred tank reactors and tubular reactors based on the reactor type.

[0003] Traditional serial tube reactors, depending on capacity, mainly consist of several straight tubes, jacketed connecting pipes, elbows, mounting supports, and connecting beams. Each cycle consists of two straight tubes and two elbows. Because the polymerization reaction generates heat, this heat is dissipated by cooling water within the jacket. The outer tubes of the straight tubes are equipped with corrugated expansion joints, mounting supports, and support beams. The elbows do not have sleeves; they are connected to both ends of the inner tubes of the straight tubes via flanges, forming a continuous flow system. The jacketed connecting pipes connect the jackets of the straight tubes, forming a continuous flow system. The connecting beams are bolted to the support beams, assembling the straight tubes into a three-dimensional frame. Serial tube reactors use multiple foundation supports, meaning each straight tube has its own mounting support. Errors in the length, axial position, orientation, elevation, and spacing of the straight tubes, as well as manufacturing errors in the parallelism of the straight tubes, flange perpendicularity, and elbows, all simultaneously affect the sealing performance of the serial tube installation. The installation of tube reactors can be divided into two types: vertical and inclined. The latter occupies a slightly larger area and its overall structure is more stable than the former.

[0004] For example, such as Figure 1As shown, a vertically installed serial tube reactor mainly consists of six straight sleeves (R1, R2, ..., R6), five 180° large bends (A1, A2, A3, and two bends at the bottom), and one 90° bend connected sequentially to form a circulating system. It is supported by five jacketed connecting pipes located at the bends and connected to the outer pipes. The reactor sits on a high platform. An axial flow pump is installed at the bottom bend of the serial tubes. The reactants enter the reactor through the reactant inlet 1A and are stirred and circulated within the tubes under the drive of the axial flow pump. Under the action of the catalyst, they react to form a slurry of polypropylene, which is discharged through the reactant outlet 1B into the granulation system. The cooling medium enters through the cooling medium inlet of the jacketed flow channel and exits through the cooling medium outlet of the jacketed flow channel. Six mounting supports are located at the bottom of each straight sleeve R1, R2, R3, R4, R5, and R6. The jackets are connected by five jacket connecting pipes. The cooling water inside the jackets carries away the heat released by the reaction in the inner tubes through the partition walls, maintaining the normal operation of the reaction process. To compensate for the difference in thermal expansion displacement caused by the temperature difference between the inner and outer tubes, expansion joints are attached to the jackets. The jackets are also equipped with expansion joints, support beams and supports. Adjacent jackets are connected by structural steel to form several spatial platforms.

[0005] Problems with the basic structure:

[0006] With the scarcity of petroleum resources, and in order to meet the huge market demand and development of ethylene-specific feedstocks, new and more stringent requirements have been placed on the structure, capacity, and quality of serial tube reactor equipment. Chemical companies hope to reduce costs and improve market competitiveness through economies of scale of high capacity. In 1996, the capacity of the first domestically produced serial tube reactor was 70,000 tons / year. In 2009, the capacity of the first domestically produced solution polymerization polypropylene circulating reactor reached 450,000 tons / year, posing a challenge to the traditional slurry polymerization serial tube reactor. Currently, there is an urgent need to gradually increase the capacity of serial tube reactors from 300,000 tons / year to 350,000 tons / year, 400,000 tons / year, and over 450,000 tons / year.

[0007] Traditional design and manufacturing techniques for serial tube reactors, both domestically and internationally, require the following processing methods: For each straight tube, the manufacturing process involves first welding the straight tube and its mounting support, then using the bottom surface of the mounting support as a reference to measure and adjust the positioning dimensions of other mating surfaces. The overall assembly process for all straight tubes involves first fixing the bottom surfaces of the mounting supports of each straight tube to the same plane, and then assembling the large elbows at the ends of the straight tubes. The design deviation for the total length of the straight tubes is ±2mm. If the manufacturing quality of all straight tubes can be controlled within this deviation, and the flange sealing surfaces at the ends are also on the same plane, then the large elbows can be assembled smoothly and a seal can be guaranteed. Otherwise, installation is difficult, and a seal cannot be guaranteed. With further expansion of production capacity, the existing serial tube reactors described above, due to the use of a single, slender, vertical structure for the straight tubes, will exhibit the following shortcomings when the length of the straight tubes exceeds 60 meters or even reaches 70 meters:

[0008] Olefins are flammable and explosive media, and the sealing performance of the tubular reactor is the key to the stable and long-term full-load operation of the unit.

[0009] A fundamental problem is that the manufacturing precision of the series-tube reactor is becoming increasingly sensitive to the impact on the installation seal. The requirements for the dimensional deviations of the flange sealing surfaces at both ends of the straight sleeve are becoming increasingly narrow. It is difficult to control the flange sealing surfaces at all ends of the straight sleeve to be on the same plane, and the total length deviation of the straight sleeve is difficult to control within the design value of ±2mm. Another problem is that the inclined vertical installation of the series-tube reactor requires the flange to form a small angle with the central axis of the straight sleeve. Even during pre-assembly in the manufacturing process, the straight sleeve can only have one installation rotation angle, unlike the vertical sleeve which can rotate 360 ​​degrees to adjust the optimal azimuth angle. Therefore, inclined vertical installation is no longer suitable.

[0010] Currently, the domestic inland and overseas long-distance transportation of large-scale serial tube reactors and other petrochemical equipment is objectively limited by roads. Dividing the overall design of the equipment into relatively small modules for manufacturing and then transporting them to the plant site for secondary assembly is a good solution. However, due to the adverse effects of harsh construction conditions, it is impossible to guarantee the stringent assembly precision. Furthermore, traditional structures lack the flexibility in assembling components, ultimately limiting the expansion of the plant's production capacity.

[0011] Another issue is structural waste. The existing multiple straight bushings each correspond to different independent mounting supports. These supports form the stable foundation for all the straight bushings, but the external loads they bear are different, and the required strength of the supporting structure also varies. Some requirements are high, while others are low. Traditional designs uniformly calculate and verify based on the highest requirement, ultimately designing the supporting structure for each straight bushing to be the same as the highest requirement. Therefore, the supporting structure strength of most straight bushings is excessive, resulting in structural waste. Furthermore, the excess structural weight further increases the strength requirements for hoisting, transportation, and concrete foundations, causing multiple forms of waste.

[0012] In conclusion, to quickly adapt to the current market environment of high-capacity, large-structure serial tube reactors in the construction and expansion of petrochemical plants, to meet the needs of increasing capacity, expanding capacity, and upgrading traditional serial tube reactors, and to meet the high-capacity demand of polypropylene production capacity of 500,000 tons / year or more, the development of new high-capacity serial tube reactors has profound and significant industrial and economic implications. Summary of the Invention

[0013] To address the aforementioned technical problems in the existing technology, this invention provides a series-tube reactor with an adjustable support that is easy to install and allows for fine-tuning of the straight sleeve height.

[0014] To achieve the above objectives, the present invention provides the following technical solution:

[0015] A serial tube reactor with an integral mounting support and a fine-tuning ring is provided, comprising multiple straight sleeves, a jacketed connecting pipe, an elbow, and a mounting support. Each straight sleeve includes an inner tube and an outer tube, with the inner tube passing through the outer tube. The elbow and the inner tube are connected in series to form a medium flow channel for conveying reactants and for reaction. The jacketed connecting pipe is located at the elbow and connects to the outer tube, thereby connecting the jacketed flow channel formed between the inner and outer tubes in series to form a cooling flow channel for conveying cooling medium. The outer tubes of the multiple straight sleeves pass through the mounting support. The mounting support is characterized in that it is an integral structure, with multiple straight sleeves fixed on the same mounting support. A fine-tuning ring is fixed to the outer side of each straight sleeve. The gap between the fine-tuning ring and the top panel of the mounting support is adjustable before they are fixed to each other, thereby adjusting the height of the end sealing surface of the straight sleeve.

[0016] Specifically, a screw is threaded through the fine-tuning ring, and the screw is threadedly connected to the fine-tuning ring. The end of the screw abuts against the top panel of the mounting bracket.

[0017] Specifically, the fine-tuning ring has a threaded hole through which the screw passes.

[0018] Specifically, the fine-tuning support ring is fixed with a nut that mates with the screw.

[0019] Specifically, a wedge pad is inserted into the gap between the top panel of the fine-tuning ring and the mounting bracket, and the wedge pad is welded to fix the fine-tuning ring and the mounting bracket.

[0020] Specifically, the mounting support is a tapered skirt support that is smaller at the top and larger at the bottom, or a rigid ring support.

[0021] Specifically, the periphery of the conical skirt is a flat inclined surface or a stepped shape with tiers.

[0022] Specifically, the conical skirt seat is either a closed skirt seat with a sealed perimeter or an open skirt seat with a through opening.

[0023] Specifically, the tapered skirt is a welded structure of steel plate or structural steel.

[0024] Specifically, the conical skirt is directly fixed to the surrounding ground.

[0025] The beneficial effects of this invention are:

[0026] This invention discloses a series-tube reactor with an integral mounting support and fine-tuning rings. Each straight sleeve has a fine-tuning ring fixed to its outer side. The gap between the fine-tuning ring and the top panel of the mounting support is adjustable before they are fixed together, thereby adjusting the height of the end sealing surface of the straight sleeve. The fine-tuning rings serve to position and adjust the height of the straight sleeves, allowing for fine-tuning so that the end sealing surfaces of adjacent straight sleeves can be adjusted to the same horizontal height, achieving the specified strength and sealing performance when connected to the elbow.

[0027] The integral mounting bracket combines all straight sleeves onto the same mounting bracket, so that the strength of the supporting structure is balanced and uniform. The excess structural strength is utilized to a certain extent by adjacent structures with insufficient strength, reducing the overall structural strength requirement and achieving lightweight design.

[0028] The overall mounting support and the fine-tuning support ring also have a functional division of labor. While the fine-tuning support ring can accurately adjust the precision assembly dimensions of the reactor component structure, the fit dimension deviation between the mounting hole on the mounting support and the anchor bolt of the concrete foundation can be amplified. This solves the dilemma in traditional structures where each independent mounting support must both accurately assemble the components and accurately fit the anchor bolt.

[0029] It should be noted that the overall assembly technology of the serial tube reactor in this embodiment can adopt either the traditional process steps or the reverse route. The reverse route involves first assembling the large elbows at both ends of the straight sleeve, and then welding the fine-tuning support rings on the straight sleeve. The gap between the fine-tuning support rings and the top panel of the mounting bracket can be finely adjusted before fixing. This has two advantages: First, it facilitates the overall design of the large serial tube reactor to be divided into small modules for manufacturing and then transported to the plant site for final simple construction and secondary assembly. Even if these simple constructions produce some dimensional deviations, the total length deviation of the straight sleeve can be controlled within ±2mm of the design value. This ensures that the sealing surfaces at the ends of adjacent straight sleeves can achieve the specified strength and sealing performance when connected to the elbows. The reactor supply is no longer subject to the objective road restrictions of long-distance transportation in inland China and overseas. Second, the overall mounting bracket can be pre-assembled with the straight sleeve in the manufacturing plant, making it easier to bundle multiple straight sleeves together for transportation to the plant site, thus improving transportation efficiency. Attached Figure Description

[0030] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of a series-tube reactor with an integral mounting support and a fine-tuning support ring, as shown in the embodiment.

[0032] Figure 2 This is a schematic diagram of the structure of a first embodiment of a serial tube reactor with an integral mounting support and a fine-tuning support ring according to the present invention.

[0033] Figure 3 This is a schematic diagram of the structure of a second embodiment of a serial tube reactor with an integral mounting support and a fine-tuning support ring according to the present invention.

[0034] Figure 4 This is a schematic diagram of the fine-tuning structure in the embodiment. Detailed Implementation

[0035] The present invention will be described in detail below with reference to specific embodiments and accompanying drawings.

[0036] This embodiment describes a series-tube reactor with an integral mounting support and a fine-tuning support ring, such as... Figures 2 to 4As shown, the reactor includes multiple straight sleeves R1, R2, R3, R4, R5, R6, a jacketed connecting pipe, elbows A1, A2, A3, B1, B2, B3, and a mounting support E1. Each straight sleeve includes an inner pipe and an outer pipe, with the inner pipe passing through the outer pipe. The elbows and inner pipes are connected in series to form a medium flow channel for transporting reactants and for reaction. The jacketed connecting pipe is located at the elbow and connects to the outer pipe, thus connecting the jacketed flow channel formed between the inner and outer pipes in series to form a cooling flow channel for transporting cooling medium. Here, a is the reactant inlet and b is the reactant outlet. The mounting support E1 is located on the outside of the outer pipe, dividing the straight sleeve into an upper section and a lower section. The above technical features are the same as the structure of a serial tube reactor in the prior art. The serial tube reactor of this embodiment also possesses the basic structure of a reactor in the prior art. The main improvement is:

[0037] Mounting support E1 is an integral structure, with multiple straight sleeves fixed on the same mounting support. The integral mounting support combines all the straight sleeves onto the same mounting support, so that the strength of the supporting structure obtains a balanced and uniform platform. The excess structural strength is utilized to a certain extent by adjacent structures with insufficient strength, reducing the overall structural strength requirement and realizing lightweight design.

[0038] Each straight sleeve is fixed with a fine-tuning support ring d1, d2, d3, d4, d5, and d6 on its outer side. The gap between the fine-tuning support ring and the top panel E11 of the mounting support E1 can be adjusted before they are fixed together, thereby adjusting the height of the end sealing surface of the straight sleeve. Both the fine-tuning support ring and the mounting support E1 are made of steel with excellent weldability. After the height of the straight sleeve is adjusted, the two can be welded together and fastened together. This is a major innovation in the functional structure of traditional serial tube reactors.

[0039] During assembly, after the straight sleeve is inserted into the assembly hole on the top panel E11 of the mounting bracket E1, it is positioned by the adjustable support ring of the straight sleeve. By adjusting the gap between the adjustable support ring and the skirt panel, the height of the sealing surface at the end of the straight sleeve is adjusted, ensuring a smooth seal between the end of the straight sleeve and the elbow. Then, it is fixed by welding or bolting, or a combination of methods. For details, refer to the reference. Figure 1 and Figure 2Using the reactant inlet 1A as a reference, adjust the fine-tuning ring d1 of straight sleeve R1 so that the lower flange sealing surface of straight sleeve R1 is tightly fitted to the reactant inlet 1A and securely connected. Then adjust the fine-tuning ring d2 of straight sleeve R2 so that the upper flange sealing surface of straight sleeve R2 is at the same horizontal level as the upper flange sealing surface of straight sleeve R1. This ensures that the upper flange sealing surfaces of straight sleeves R2 and R1 are tightly fitted to the same elbow A1. Next, adjust the fine-tuning ring d3 of straight sleeve R3 so that the lower flange sealing surface of straight sleeve R3 is at the same horizontal level as the lower flange sealing surface of straight sleeve R2. This ensures that the lower flange sealing surfaces of straight sleeves R3 and R2 are tightly fitted to the same elbow B1. Continue in this manner, installing subsequent straight sleeves in series, using the preceding straight sleeves as references, until all sleeves of the entire reactor are installed and connected.

[0040] There are many ways to implement fine-tuning. Figure 4 One example is a straight sleeve d1. The outer tube 101 of the straight sleeve d1 is inserted into the mounting support E1. The outer tube 101 is equipped with an expansion joint 23. The fine-tuning support ring d1 is located above the top panel E11 of the mounting support E1. The adjustment is performed as follows: the fine-tuning nut 32 is fixed on the fine-tuning support ring d1, or the fine-tuning support ring itself has a threaded hole. The fine-tuning screw 31 is screwed into the fine-tuning nut 32 or the threaded hole until it passes through the bottom of the fine-tuning support ring d1 and presses against the top panel E11 of the mounting support E1. The fine-tuning screw 31 is continued to be screwed in until the sealing surface of the straight sleeve end flange meets the height requirement. At this time, a wedge pad 33 is inserted into the gap between the fine-tuning support ring d1 and the top panel E11, and welding is performed between the fine-tuning support ring d1 and the top panel E11. The entire circumference is continuously welded to the design requirement of the weld amount, and the two are reliably connected by the weld 34.

[0041] In the second embodiment, the main technical solution is the same as in the above embodiments. Features not explained in this embodiment are explained in the above embodiments and will not be repeated here. The difference between this embodiment and the above embodiments is that the straight sleeves are assembled with the connected elbows in pairs to form a U-shaped component, and several U-shaped components are then combined with the mounting support E1 through adjustable support rings d1, d2, d3, d4, d5, and d6. (Reference) Figure 1 and Figure 2Before hoisting, first assemble the upper flange sealing surfaces of straight sleeves R1 and R2 with the connected elbow A1 to form the first U-shaped component on the ground. Then, using the reactant inlet 1A as a reference, simultaneously adjust the fine-tuning ring d1 of straight sleeve R1 and the fine-tuning ring d2 of straight sleeve R2 to ensure that the lower flange sealing surface of straight sleeve R1 is tightly attached to the reactant inlet 1A and securely connected. Next, assemble the upper flange sealing surfaces of straight sleeves R3 and R4 with the connected elbow A2 to form the second U-shaped component on the ground. Then, using the lower flange sealing surface of straight sleeve R2 as a reference, simultaneously adjust the fine-tuning ring d3 of straight sleeve R3 and the fine-tuning ring d4 of straight sleeve R4 to ensure that the lower flange sealing surface of straight sleeve R3 is at the same horizontal height as the lower flange sealing surface of straight sleeve R2. This ensures that the lower flange sealing surfaces of straight sleeves R3 and R2 are tightly attached to the connected elbow B1. Following this pattern, the subsequent U-shaped parts are based on the preceding U-shaped parts. The straight sleeves are first connected in parallel to form U-shaped parts, and then each U-shaped part is installed in series. The combination of parallel and series connection methods is used to complete the installation and connection of all the sleeves of the entire reactor.

[0042] For mounting brackets:

[0043] The mounting support E1 is a conical skirt support with a smaller upper section and a larger lower section. The periphery of the conical skirt support is conical or pyramidal. This conical skirt support, being a combination of a larger lower section and a smaller upper section, increases the resistance to toppling moments due to the larger contact area between the lower part and the mounting foundation, and also distributes the load of the entire equipment. The reduced size of the upper structure reduces the harmful lateral effects of wind loads. This invention can, to some extent, address the strength and stability requirements of tall structures. Compared with existing technologies, the above technical solution increases the contact area of ​​the mounting foundation, thereby increasing the sleeve's resistance to toppling moments, and also distributes the load of the entire equipment. This technology can, to some extent, address the strength and stability requirements of tall structures.

[0044] Furthermore, the conical skirt seat is a closed skirt seat with a circumferential seal. The main body of the closed skirt seat is made of steel plate. The top surface of the conical skirt seat E1 is a panel E11. The panel E11 has multiple mounting holes arranged longitudinally, and several straight sleeves are inserted and fixed in different mounting holes.

[0045] Furthermore, the periphery of the conical skirt seat is a flat slope or a stepped shape. Two conical skirt seats with different diameters can be seamlessly connected and stacked together to form a stepped stepped conical skirt seat, which helps to save materials. The steps can be used as a standing position, which facilitates the tightening of the anchor nuts by the operators and maintenance personnel.

[0046] Furthermore, the conical skirt is either a one-piece skirt or a skirt assembled from multiple modules. Each part of the segmented skirt can be assembled with a portion of the straight sleeve, and then assembled together to form an integral conical skirt and an integral serial tube reactor.

[0047] Furthermore, the conical skirt is directly fixed to the surrounding ground. Considering that the mounting supports are relatively high when the series reactor is installed on the ground, an open main structure is particularly suitable in this case, which also reduces the construction cost of high-rise installation platforms.

[0048] Alternatively, the conical skirt can be an open skirt E2 with a through opening. The main body of the open skirt is made of welded steel profiles. The open main structure is similar to a grid structure and can have ventilation holes or be similar to a grid. Compared with a closed structure, it can save materials and reduce the effect of lateral wind pressure load, but does not lose the overall stability of the reactor due to the conical structure.

[0049] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0050] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A series-tube reactor with an integral mounting support and a fine-tuning support ring, comprising multiple straight tubes, a jacketed connecting pipe, an elbow, and a mounting support, each straight tube comprising an inner tube and an outer tube, the inner tube being inserted into the outer tube, the elbow being connected in series with the inner tube to form a medium flow channel for conveying reactants and for reaction, the jacketed connecting pipe being located at the elbow and connected to the outer tube, thereby connecting the jacketed flow channel formed between the inner and outer tubes in series to form a cooling flow channel for conveying cooling medium, the outer tubes of the multiple straight tubes being inserted into the mounting support, characterized in that, The mounting bracket is an integral structure, with multiple straight sleeves fixed on the same mounting bracket. Each straight sleeve has a fine-adjustment ring fixed to its outer side. The gap between the fine-adjustment ring and the top panel of the mounting bracket can be adjusted before they are fixed to each other, thereby adjusting the height of the end sealing surface of the straight sleeve.

2. A series-tube reactor with an integral mounting support and a fine-tuning support ring according to claim 1, characterized in that: A screw rod is threaded through the fine-tuning ring, and the screw rod is threadedly connected to the fine-tuning ring. The end of the screw rod abuts against the top panel of the mounting bracket.

3. A series-tube reactor with an integral mounting support and a fine-tuning support ring according to claim 2, characterized in that: The fine-tuning support ring has a threaded hole through which the screw passes.

4. A series-tube reactor with an integral mounting support and a fine-tuning support ring according to claim 2, characterized in that: The fine-tuning support ring is fixed with a nut that mates with the screw.

5. A series-tube reactor with an integral mounting support and a fine-tuning support ring according to claim 1 or 2, characterized in that: in A wedge pad is inserted into the gap between the fine-tuning support ring and the top panel of the mounting bracket, and the wedge pad is welded to fix the fine-tuning support ring and the mounting bracket.

6. A series-tube reactor with an integral mounting support and a fine-tuning support ring according to claim 1, characterized in that: The mounting support is a tapered skirt support or a rigid ring support, which is smaller at the top and larger at the bottom.

7. A series-tube reactor with an integral mounting support and a fine-tuning support ring according to claim 6, characterized in that: The periphery of the conical skirt is a flat slope or a stepped shape.

8. A series-tube reactor with an integral mounting support and a fine-tuning support ring according to claim 6, characterized in that: The conical skirt seat is either a closed skirt seat with a sealed perimeter or an open skirt seat with a through opening.

9. A series-tube reactor with an integral mounting support and a fine-tuning support ring according to claim 6, characterized in that: The tapered skirt is a welded structure made of steel plates or structural steel.

10. A series-tube reactor with an integral mounting support and a fine-tuning support ring according to claim 6, characterized in that: The conical skirt base is directly fixed to the surrounding ground.

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