A jacketed reactor

Abstract

This disclosure relates to the field of reactor technology. One embodiment of this disclosure provides a jacketed reactor, comprising: a reactor shell, an inlet pipe, and a outlet pipe. The inlet pipe and the outlet pipe are respectively connected to the two ends of the reactor shell. A heat exchange assembly is disposed outside the reactor shell, and a sealing packing assembly is disposed at both ends of the reactor shell. The heat exchange assembly includes an outer ring groove formed at both ends of the outer wall of the reactor shell. A pair of heat exchange shells are disposed outside the reactor shell, and a fitting sleeve is disposed on the side end face of the heat exchange shells. The cross-section of the pair of heat exchange shells is semi-circular. The fitting sleeves are fixedly connected by multiple bolts. Several heat exchange fins are disposed around the outer circumference of the reactor shell. The above technical solution solves the technical problem that the heat transfer method of traditional fixed bed reactors in the prior art mostly relies on simple jackets or built-in coils, which has the defects of limited heat exchange area and low heat transfer efficiency.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of reactor-related technology, and more specifically, to a jacketed reactor. Background Technology

[0002] In chemical production, fixed-bed reactors are commonly used reaction equipment and are widely applied in exothermic chemical reaction processes such as gas-solid phase and liquid-phase hydrogenation. In these reactions, a large amount of heat energy is released when reactants form products through the breaking and recombination of chemical bonds. If the heat cannot be removed in time, it will cause the temperature of the reaction system to rise abnormally, which will not only affect the reaction rate, selectivity and product purity, but may also cause problems such as catalyst deactivation, equipment overheating and damage, and even safety hazards.

[0003] Traditional fixed-bed reactors often rely on simple jackets or built-in coils for heat transfer, which suffers from limited heat exchange area and low heat transfer efficiency, making it difficult to meet the high-efficiency heat transfer requirements of strongly exothermic reactions. Furthermore, some reactors have large dead volumes, leading to uneven residence times of feed and product, affecting reaction performance. Additionally, sealing materials are prone to aging under high-temperature environments, shortening equipment lifespan and increasing maintenance costs and safety risks.

[0004] Therefore, developing a jacketed reactor that can efficiently transfer heat, reduce dead volume, extend the life of sealing materials, and is compatible with various reaction systems has become an urgent problem to be solved in the field of chemical equipment. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a jacketed reactor, which solves the technical problem that the heat transfer method of traditional fixed-bed reactors in the prior art mostly relies on simple jackets or built-in coils, resulting in limited heat exchange area and low heat transfer efficiency.

[0006] According to one aspect, at least one embodiment of this disclosure provides a jacketed reactor, comprising: The reactor shell, the inlet pipe, and the outlet pipe are respectively connected to the two ends of the reactor shell. A heat exchange assembly is disposed outside the reactor shell; A sealing packing assembly is disposed at both ends of the reactor shell; The heat exchange assembly includes an outer ring groove, which is formed at both ends of the outer wall of the reactor shell. A pair of heat exchange shells are provided outside the reactor shell, and the side end faces of the heat exchange shells are provided with fitting sleeves.

[0007] As a further technical solution, the fitting sleeve is fitted inside the outer ring groove, and the cross-section of the pair of heat exchange shells is a semi-circular structure. The fitting sleeves are fixedly connected by multiple bolts, and several heat exchange fins are arranged around the outside of the reactor shell.

[0008] As a further technical solution, the heat exchange fins are all located inside the heat exchange shell, and a circulation pipe is provided on each of the outer walls of the heat exchange shell.

[0009] As a further technical solution, the sealing packing assembly includes a pair of filling plugs, which are respectively installed inside both ends of the reactor shell. Both ends of the reactor shell are equipped with sealing heads, and both ends of the reactor shell are fitted with fixing sleeves.

[0010] As a further technical solution, the fixing sleeve is connected to the outer wall of the reactor shell by a threaded connection, and a reactor catalyst support rod is inserted into the inner end face of one of the filling and sealing components, and a reactor catalyst support orifice plate is provided at one end of the reactor catalyst support rod.

[0011] As a further technical solution, an internal support frame is inserted inside the reactor shell, the lower end of the internal support frame is supported on the surface of the catalyst support orifice plate of the reactor, and catalyst packing is installed in the internal support frame.

[0012] As a further technical solution, the surface of the heat exchange fins has a mesh-like structure.

[0013] As a further technical solution, a pair of sealing rings are installed between the fitting sleeve and the outer ring groove.

[0014] The beneficial effects of the embodiments disclosed herein are as follows: 1. In this disclosure, the heat exchange assembly solves the problem of low heat exchange efficiency in traditional reactors through a highly efficient heat transfer design. A semi-circular heat exchange shell is spliced ​​to form a closed jacket, with the fitted jacket layer and outer annular groove ensuring a seal; heat exchange fins increase the contact area, and the mesh structure enhances medium turbulence, improving heat exchange efficiency; the circulation pipe guides the medium to flow uniformly, avoiding uneven local heat exchange. This structure significantly improves the heat transfer rate, adapts to the heat removal requirements of strongly exothermic reactions, and facilitates disassembly and maintenance, reducing equipment operating energy consumption.

[0015] 2. In this disclosure, the sealing packing assembly solves the problem of media leakage under high pressure through a multi-layer sealing design. The filling plug and the sealing head cooperate to form an initial seal, and the fixed sleeve threaded connection enhances the clamping force; the support plate and the inner support frame fix the catalyst, reduce dead volume, and ensure sufficient reaction. This structure can maintain good sealing performance under high temperature and high pressure, extend equipment life, and at the same time ensure stable catalyst distribution, improve reaction selectivity and product purity, and adapt to various chemical reaction systems. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0017] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure; Figure 2 This is a cross-sectional view of the present disclosure; Figure 3 Appendix to this disclosure Figure 2 Enlarged view of part A in the middle; In the diagram: 1. Reactor shell; 2. Inlet pipe; 3. Outlet pipe; 4. Heat exchange assembly; 4-1. Outer annular groove; 4-2. Heat exchange shell; 4-3. Fitting sleeve; 4-4. Heat exchange fins; 4-5. Circulation pipe; 5. Sealing packing assembly; 5-1. Filling and plugging; 5-2. Sealing head; 5-3. Fixing sleeve; 5-4. Reactor catalyst support rod; 5-5. Reactor catalyst support orifice plate; 5-6. Inner support frame; 5-7. Catalyst packing; 6. Sealing ring. Detailed Implementation

[0018] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0019] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0020] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0021] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0023] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] like Figures 1-3 As shown, a jacketed reactor according to an embodiment of the present disclosure is illustrated, comprising: The reactor shell 1, the inlet pipe 2, and the outlet pipe 3 are respectively connected to the two ends of the outside of the reactor shell 1; Heat exchange assembly 4 is disposed outside the reactor shell 1; A sealing packing assembly 5 is disposed at both ends of the reactor shell 1; The heat exchange assembly 4 includes an outer ring groove 4-1, which is formed at both ends of the outer wall of the reactor shell 1. A pair of heat exchange shells 4-2 are provided on the outside of the reactor shell 1. A fitting sleeve 4-3 is provided on the side end face of the heat exchange shell 4-2. The fitting sleeve 4-3 is fitted inside the outer ring groove 4-1. The cross-section of the pair of heat exchange shells 4-2 is semi-circular. The fitting sleeves 4-3 are fixedly connected by multiple bolts. A number of heat exchange fins 4-4 are provided around the outside of the reactor shell 1. The heat exchange fins 4-4 are all located inside the heat exchange shells 4-2. A circulation pipe 4-5 is provided on the outer wall of the pair of heat exchange shells 4-2.

[0025] In some examples, the heat exchange assembly 4 achieves efficient heat exchange through a combination of sealing and fin reinforcement. The outer annular grooves 4-1 at both ends of the outer wall of the reactor shell 1 are annular recesses that fit the sealing sleeves 4-3 on the side faces of the heat exchange shell 4-2. The sealing sleeves 4-3 are made of elastic sealing material. After being fitted into the annular grooves, a pair of semi-circular heat exchange shells 4-2 are fixedly connected by multiple bolts, forming a closed jacket space surrounding the reactor shell 1 to prevent leakage of the heat exchange medium. The heat exchange fins 4-4 around the outer perimeter of the reactor shell 1 are vertically welded and evenly distributed inside the heat exchange shells 4-2. The fins increase the contact area with the heat exchange medium, improving heat exchange efficiency. The circulation pipes 4-5 on the outer walls of the pair of heat exchange shells 4-2 are respectively connected to the jacket space; one is an inlet pipe and the other is an outlet pipe, forming a circulation channel for the heat exchange medium. Valves are installed on the pipes to control the flow rate.

[0026] During operation, the heat exchange medium enters the jacket space from the circulation pipe 4-5, making full contact with the reactor shell 1 and the heat exchange fins 4-4, absorbing or releasing heat from the reactor interior through heat conduction. The heat-absorbing medium then flows out from another circulation pipe 4-5, completing the heat exchange cycle. The semi-circular heat exchange shell 4-2's splicing design facilitates installation and maintenance, allowing for inspection of the internal fins without disassembling the reactor. The fit between the sleeve layer 4-3 and the outer ring groove 4-1 ensures a tight seal in the jacket space, accommodating shell deformation caused by temperature changes. The heat exchange fins 4-4 increase the heat exchange area and improve heat exchange efficiency. The directional flow of the circulation pipe 4-5 ensures the heat exchange medium flows evenly through the jacket space, avoiding uneven local heat exchange. The bolt-fixed splicing structure ensures the reliability of the jacket space's seal while facilitating disassembly and assembly. This component, through its efficient heat exchange structure, achieves heat transfer between the reactor interior and exterior, meeting the temperature control requirements of chemical reactions.

[0027] like Figures 1-3 As shown in the figure, this embodiment proposes that the sealing packing assembly 5 includes a pair of filling plugs 5-1, which are respectively installed inside both ends of the reactor shell 1. Both ends of the reactor shell 1 are equipped with sealing heads 5-2, and both ends of the reactor shell 1 are fitted with fixing sleeves 5-3. The fixing sleeves 5-3 are connected to the outer wall of the reactor shell 1 by threaded connection. A reactor catalyst support rod 5-4 is inserted into the inner end face of one of the filling plugs 5-1. One end of the reactor catalyst support rod 5-4 is provided with a reactor catalyst support orifice plate 5-5. An inner support frame 5-6 is inserted into the reactor shell 1. The lower end of the inner support frame 5-6 is supported on the surface of the reactor catalyst support orifice plate 5-5. Catalyst packing 5-7 is installed in the inner support frame 5-6.

[0028] In some examples, the sealing packing assembly 5 provides a sealed reaction space for exothermic chemical reactions through multi-layer sealing and support. The packing plugs 5-1 at both ends of the reactor shell 1 are made of high-temperature resistant sealing material, tightly fitting against the inner wall of the shell to form an axial seal, preventing leakage of the reaction medium from the ends. A through-hole is provided in the center of the plug for inserting internal components. The sealing heads 5-2 at both ends of the reactor shell 1 are fixed to the ends of the shell with bolts, compressing the packing plugs 5-1 to enhance the sealing effect and simultaneously providing axial restraint for the internal components. The fixing sleeves 5-3 at both ends of the reactor shell 1 are threaded to the outer wall of the shell. Tightening them further compresses the sealing heads 5-2 and the packing plugs 5-1, ensuring reliable sealing under high pressure. One of the packing plugs 5-1 has a rigid catalyst support rod 5-4 inserted into its inner end face. One end of the catalyst support plate 5-5 is a porous structure, fixed by welding, used to support the catalyst packing 5-7. The inner support frame 5-6 inside the reactor shell 1 is a frame structure. The lower end is supported on the surface of the support orifice plate, and the upper end is in contact with the filling and sealing 5-1 at the other end, forming a radial limit on the catalyst packing 5-7 to prevent the packing from shifting during the reaction.

[0029] During operation, the catalyst packing 5-7 is inserted into the space between the inner support 5-6 and the support orifice plate. The sealing of both ends of the reactor shell 1 is achieved through the cooperation of the filling plug 5-1, the sealing head 5-2, and the fixing sleeve 5-3, ensuring the reaction proceeds within a closed space. Under suitable conditions, the catalyst packing 5-7 undergoes an exothermic chemical reaction. The porous structure of the support orifice plate allows the reaction medium to pass through and fully contact the catalyst. The combination of the inner support 5-6 and the support rod ensures the packing maintains a stable shape during the reaction, preventing packing accumulation or dispersion due to medium flow. The elastic seal of the filling plug 5-1 adapts to temperature and pressure changes during the reaction, ensuring reliable sealing. The porous design of the support orifice plate supports the packing without obstructing medium flow, ensuring a complete reaction. The supporting function of the inner support 5-6 prevents packing displacement, ensuring a stable reaction area. The threaded connection of the fixing sleeve 5-3 allows for adjustment of the sealing pressure to meet different reaction pressure requirements. This assembly provides a sealed and stable space for the exothermic chemical reaction, while simultaneously fixing and supporting the catalyst packing 5-7, ensuring a safe and efficient reaction.

[0030] For example, such as Figure 2 As shown, the surface of the heat exchange fins 4-4 has a mesh-like structure.

[0031] In some examples, the mesh-like structure on the surface of the heat exchange fins 4-4 enhances the turbulence of the heat exchange medium. The mesh breaks up the laminar boundary layer during medium flow, allowing the medium to fully contact the fin surface and improving heat exchange efficiency. Simultaneously, the mesh structure reduces fin weight and material consumption, and facilitates uniform distribution of the heat exchange medium between the fins, avoiding localized stagnation and further optimizing heat exchange performance to meet the reactor's high-efficiency temperature control requirements.

[0032] For example, such as Figure 3 As shown, a pair of sealing rings 6 are installed between the fitting sleeve layer 4-3 and the outer ring groove 4-1.

[0033] In some examples, a pair of sealing rings 6 between the mating sleeve 4-3 and the outer ring groove 4-1 are made of high and low temperature resistant rubber and are located on both sides of the mating sleeve 4-3. The sealing rings 6 can enhance the sealing performance of both and prevent the heat exchange medium from leaking from the gap. The double sealing design can meet the sealing requirements under high pressure environment. Even if one seal fails, the other can still play a protective role and ensure the stable operation of the heat exchange component 4.

[0034] In practical use: The filling and sealing 5-1 is installed at both ends of the reactor shell 1. After the sealing head 5-2 is tightened, the fixing sleeve 5-3 is tightened to enhance the seal. The reactor catalyst support rod 5-4 is inserted into the support orifice plate. The lower end of the inner support frame 5-6 is supported on the orifice plate. The catalyst packing 5-7 is then installed. The fitting sleeve 4-3 of a pair of semi-circular heat exchange shells 4-2 is fitted into the outer ring groove 4-1 and fixed with bolts to form a closed jacket. The sealing ring 6 strengthens the seal. The circulation pipe 4-5 connects to the heat exchange medium source. The reactants flow in from the inlet pipe 2, react with the catalyst packing 5-7, and flow out from the outlet pipe 3. The heat exchange medium enters the jacket through the circulation pipe 4-5, exchanging heat with the heat exchange fins 4-4 and the reactor shell 1 to control the reaction temperature. The heat exchange shell 4-2 can be separated by removing the bolts to inspect the fins.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure 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 this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A jacketed reactor characterized in that, include: The reactor shell (1), inlet pipe (2) and outlet pipe (3) are respectively connected to the two ends of the reactor shell (1). A heat exchange assembly (4) is disposed outside the reactor shell (1); A sealing packing assembly (5) is disposed at both ends of the reactor shell (1); The heat exchange assembly (4) includes an outer ring groove (4-1), which is formed at both ends of the outer wall of the reactor shell (1). A pair of heat exchange shells (4-2) are provided outside the reactor shell (1), and a fitting sleeve (4-3) is provided on the side end face of the heat exchange shell (4-2).

2. A jacketed reactor according to claim 1, wherein The fitting sleeve (4-3) is fitted inside the outer ring groove (4-1). The cross-section of the pair of heat exchange shells (4-2) is semi-circular. The fitting sleeves (4-3) are fixedly connected by multiple bolts. Several heat exchange fins (4-4) are arranged around the outside of the reactor shell (1).

3. A jacketed reactor according to claim 2, wherein The heat exchange fins (4-4) are all located inside the heat exchange shell (4-2), and a circulation pipe (4-5) is provided on the outer wall of each pair of heat exchange shells (4-2).

4. The jacketed reactor of claim 1, wherein, The sealing packing assembly (5) includes a pair of filling plugs (5-1), which are respectively installed inside both ends of the reactor shell (1). Both ends of the reactor shell (1) are equipped with sealing heads (5-2), and both ends of the reactor shell (1) are fitted with fixing sleeves (5-3).

5. A jacketed reactor according to claim 4, wherein The fixing sleeve (5-3) is connected to the outer wall of the reactor shell (1) by a threaded connection. One of the filling and sealing (5-1) has a reactor catalyst support rod (5-4) inserted into its inner end face. One end of the reactor catalyst support rod (5-4) is provided with a reactor catalyst support orifice plate (5-5).

6. A jacketed reactor according to claim 5, wherein An inner support frame (5-6) is inserted inside the reactor shell (1). The lower end of the inner support frame (5-6) is supported on the surface of the reactor catalyst support plate (5-5). Catalyst packing (5-7) is installed in the inner support frame (5-6).

7. A jacketed reactor according to claim 2, wherein The surface of the heat exchange fins (4-4) has a mesh structure.

8. The jacketed reactor of claim 1, wherein, A pair of sealing rings (6) are installed between the fitting sleeve (4-3) and the outer ring groove (4-1).

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