Interlayer heat exchange structure of fixed bed

Abstract

The utility model relates to the technical field of fixed bed catalytic reaction equipment, in particular to a fixed bed interlayer heat exchange structure which comprises a reactor, the reactor comprises a main body tank body, an air inlet is formed in the upper end of the main body tank body, an air outlet is formed in the lower end of the main body tank body, and a plurality of evenly-distributed manholes are formed in the side edge of the main body tank body in a communicated mode. A plurality of groups of fixed bed layers are uniformly distributed in the main body tank body, and a cooling assembly is also arranged in the main body tank body among the fixed bed layers, and the heat exchange structure is arranged among the fixed bed layers in the reactor, so that the problem of heat release in the catalytic reaction process can be effectively solved, the reacted gas can be effectively cooled, and the heat exchange efficiency is improved. The device is simple in structure, ensures the subsequent reaction effect and the recovery effect, improves the reaction efficiency, is small in occupied area and compact in structure, facilitates regular cleaning of a dirt medium in the cooling pipe, reduces high-temperature pipelines and valves, and reduces the cost generated in the working process.

Description

Technical Field

[0001] This utility model relates to the field of fixed-bed catalytic reaction equipment, specifically a fixed-bed interlayer heat exchange structure. Background Technology

[0002] A packed bed reactor is a reactor that is filled with granular solid catalysts or solid reactants to form a bed of a certain height. Gases or liquids flow through the gaps between the particles into the stationary bed, while a heterogeneous reaction process is achieved. The characteristic of this type of reactor is that the solid particles filling the equipment are stationary, unlike moving beds and fluidized beds where the solid materials move within the equipment; it is also called a packed bed reactor.

[0003] In fixed-bed catalytic reactions, exothermic reactions often occur. In such cases, there is no good solution for removing the heat of reaction to ensure the effect of subsequent reactions and avoid the gas from overheating and affecting subsequent operations and recovery. This affects the working effect and reaction efficiency. Therefore, this utility model proposes a fixed-bed interlayer heat exchange structure to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a fixed bed heat exchange structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fixed bed interlayer heat exchange structure, comprising:

[0006] The reactor includes a main tank, an air inlet at the upper end of the main tank, an air outlet at the lower end of the main tank, several uniformly distributed manholes connected to the side of the main tank, several sets of fixed beds uniformly distributed inside the main tank, and a cooling assembly between the fixed beds in the main tank.

[0007] The cooling assembly includes an interlayer cooling layer. Ventilation openings are evenly distributed in a ring array on the main body of the outer side of the interlayer cooling layer. A heat dissipation box is also fixedly connected to the outside of the ventilation openings on one side of the main body.

[0008] Preferably, the air inlet and air outlet are provided with connecting flanges at their ends, and the air inlet pipe and air outlet pipe are sealed and connected by the flanges. The manhole is also provided with a connecting flange at its end, and an inspection cover is connected by the connecting flange.

[0009] Preferably, the heat dissipation box includes a box body fixed to the outer side of one side of the main tank body. An air inlet is provided in the middle of the outer end of the box body. A dustproof net and a protective railing are fixedly connected inside the air inlet. A fixed frame is fixedly connected inside the box body. A rotating shaft is rotatably connected in the middle of the fixed frame. The rotating shaft is driven to the transmission output end of a drive motor. The drive motor is fixedly connected to one side of the fixed frame. A cooling fan is fixedly connected to the end of the rotating shaft. The inner side of the box body is connected to the main tank body through a ventilation port, corresponding to the interlayer cooling layer.

[0010] Preferably, the interlayer cooling layer includes support plates at the upper and lower ends, with corresponding air supply holes through the support plates. Cooling pipes are arranged between the upper and lower support plates, with each cooling pipe corresponding to an air supply hole. A ventilation groove is formed between the cooling pipes, and the ventilation groove corresponds to a ventilation opening on the main tank. The air supply hole penetrates the interlayer cooling layer.

[0011] Preferably, the support plate has a sealing groove on its edge, and a sealing ring is fitted inside the sealing groove, with the sealing ring fitting against the inner wall of the main tank.

[0012] Preferably, several fasteners arranged in a circular array are respectively provided at the upper and lower ends between the edges of the interlayer cooling layer. The fasteners include a horizontally placed clamping plate. The outer end of the clamping plate is bent at a 90-degree angle and a fixing plate is provided. The fixing plate has a fixing hole. The fixing plate extends from the vent and is fixed to the main tank by bolts passing through the fixing holes. The fasteners hold the interlayer cooling layer in place and align it with the vent.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention effectively solves the exothermic problem that occurs during catalytic reaction by setting a heat exchange structure between the fixed beds in the reactor. It can effectively cool the gas after the reaction, ensure the effect of subsequent reaction and recovery, improve reaction efficiency, and occupy less space. The structure is compact and convenient for regular cleaning of the dirt in the cooling pipes, reducing the number of high-temperature pipelines and valves, and reducing the cost incurred during operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0017] Figure 3 This is a schematic diagram of the interlayer cooling layer in this utility model.

[0018] In the diagram: 1 Reactor, 2 Air inlet, 3 Manhole, 4 Ventilation outlet, 5 Heat sink, 6 Air inlet, 7 Cooling fan, 8 Air outlet, 9 Fixed bed, 10 Interlayer cooling layer, 11 Support plate, 12 Air outlet, 13 Cooling pipe, 14 Fixture. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] Example 1: Please refer to Figures 1-3 This utility model provides a technical solution: a fixed bed interlayer heat exchange structure, comprising:

[0021] Reactor 1 includes a main tank, an air inlet 2 at the upper end of the main tank, an air outlet 8 at the lower end of the main tank, several uniformly distributed manholes 3 connected to the side of the main tank, several sets of fixed beds 9 uniformly distributed inside the main tank, and a cooling assembly is also provided in the main tank between the fixed beds 9.

[0022] The cooling assembly includes an interlayer cooling layer 10. Ventilation openings 4 are evenly distributed in a ring array on the main body of the interlayer cooling layer 10. A heat dissipation box 5 is also fixedly connected to the outside of the ventilation openings 4 on one side of the main body.

[0023] Example 2: Connecting flanges are provided at the ends of the air inlet 2 and the air outlet 8, and the air inlet pipe and the air outlet pipe are connected by sealing flanges. Connecting flanges are also provided at the ends of the manhole 3, and maintenance covers are connected by connecting flanges. The connecting flanges facilitate the connection and fixation of the air inlet pipe and the air outlet pipe. The connecting flanges at the manhole 3 also facilitate the installation and removal of the maintenance cover, which can facilitate the subsequent inspection and maintenance of the internal fixed bed layer 9 and the interlayer cooling layer 10.

[0024] The heat dissipation box 5 includes a box body fixed to the outer side of one side of the main tank body. An air inlet 6 is provided in the middle of the outer end of the box body. A dustproof net and a protective railing are fixedly connected inside the air inlet 6. A fixed frame is fixedly connected inside the box body. A rotating shaft is rotatably connected in the middle of the fixed frame. The rotating shaft is driven and connected to the transmission output end of the drive motor. The drive motor is fixedly connected to one side of the fixed frame. A cooling fan 7 is fixedly connected to the end of the rotating shaft. The inner side of the box body is connected to the main tank body through a ventilation port 4, corresponding to the interlayer cooling layer 10.

[0025] The interlayer cooling layer 10 includes upper and lower support plates 11, with corresponding air inlets 12 through the support plates 11. Cooling pipes 13 are arranged between the upper and lower support plates 11, and the cooling pipes 13 correspond to the air inlets 12 respectively. A ventilation groove is formed between the cooling pipes 13, and the ventilation groove corresponds to the ventilation opening on the main tank. The air inlets 12 penetrate the interlayer cooling layer 10. The cooling fan 7 inside the heat sink 5 can draw cold air from the outside into the ventilation groove between the interlayer cooling layers 10, which can cool and exchange the gas after catalysis through the cooling pipes 13 in the middle of the interlayer cooling layer 10, thereby improving the performance.

[0026] The support plate 11 has a sealing groove on its edge, and a sealing ring is fitted inside the sealing groove. The sealing ring fits against the inner wall of the main tank. The sealing ring on the edge of the support plate 11 can ensure the sealing effect after the interlayer cooling layer 10 is fixed, preventing the catalytic gas from leaking from the edge and ensuring that the gas can pass through the middle of the interlayer cooling layer 10 to ensure effective cooling and heat dissipation, and improve the performance.

[0027] Several fasteners 14 arranged in a circular array are provided at the upper and lower ends of the interlayer cooling layer 10. Each fastener 14 includes a horizontally placed clamping plate. The outer end of the clamping plate is bent at a 90-degree angle and has a fixing plate. The fixing plate has fixing holes. The fixing plate extends from the vent 4 and is fixed to the main tank by bolts passing through the fixing holes. The interlayer cooling layer 10 is clamped and aligned with the vent 4 by the fasteners 14. The fasteners 14 can fix the interlayer cooling layer 10 in the main tank, ensuring its stability, ensuring its performance, improving its performance, and facilitating subsequent installation, disassembly, inspection and maintenance. It also occupies little space, has a compact structure, and facilitates regular cleaning of the dirt and medium in the cooling pipes, reducing high-temperature pipelines and valves and lowering the cost incurred during operation.

[0028] In actual use, the connecting flange facilitates the connection and fixation of the inlet and outlet pipes. The connecting flange at manhole 3 also facilitates the installation and removal of the maintenance cover, allowing for convenient subsequent maintenance of the internal fixed bed layer 9 and interlayer cooling layer 10. The cooling fan 7 inside the heat sink 5 draws external cool air into the ventilation slots between the interlayer cooling layers 10, cooling and exchanging heat for the catalytically cooled gas passing through the intermediate cooling pipe 13 of the interlayer cooling layer 10, improving performance. The sealing ring on the edge of the support plate 11 ensures a tight seal after the interlayer cooling layer 10 is fixed in place. To prevent catalytic gas from leaking from the edges and ensure that the gas can pass through the middle of the interlayer cooling layer 10, thus ensuring effective cooling and heat dissipation and improving the performance, the interlayer cooling layer 10 is secured to the ventilation port 4 by the fastener 14. The fastener 14 can fix the interlayer cooling layer 10 to the main tank, ensuring its stability, performance, and ease of installation, disassembly, inspection, and maintenance. It also has a small footprint, a compact structure, and facilitates regular cleaning of the dirt and medium in the cooling pipes, reducing the number of high-temperature pipelines and valves and lowering the cost incurred during operation.

[0029] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixed bed interbed heat exchange structure, characterized by: The utility model relates to a reactor (1) for the production of hydrogen, comprising: a reactor (1) comprising a main tank body provided with an air inlet (2) at the upper end and an air outlet (8) at the lower end, a plurality of manholes (3) evenly distributed on the side of the main tank body, and a plurality of fixed bed layers (9) evenly distributed inside the main tank body, wherein a cooling assembly is further arranged in the main tank body between the fixed bed layers (9); the cooling assembly comprises an interlayer cooling layer (10), and a plurality of ventilation openings (4) are evenly distributed in the form of an annular array on the outer side of the interlayer cooling layer (10), and a heat dissipation box (5) is further fixedly connected to the outside of the ventilation openings (4) on one side of the main tank body.

2. The fixed bed inter-bed heat exchange structure according to claim 1, wherein: The end of the air inlet (2) and the air outlet (8) is provided with a connecting flange, and the air inlet pipeline and the air outlet pipeline are connected by flange sealing, and the end of the manhole (3) is also provided with a connecting flange, and a maintenance cover is connected by the connecting flange.

3. The fixed bed inter-bed heat exchange structure according to claim 1, wherein: The heat dissipation box (5) comprises a box body fixed to the outer side of one side of the main tank body, an air inlet (6) is formed in the middle of the outer side end of the box body, a dust screen and a protective fence are fixedly connected in the air inlet (6), a fixing frame is fixedly connected in the box body, a rotating shaft is rotatably connected in the middle of the fixing frame, the rotating shaft is drivingly connected to the driving output end of a driving motor, the driving motor is fixedly connected to one side of the fixing frame, a heat dissipation fan (7) is fixedly connected to the end of the rotating shaft, and the inside of the box body is communicated to the inside of the main tank body through the ventilation openings (4) and corresponds to the interlayer cooling layer (10).

4. The fixed bed inter-bed heat exchange structure according to claim 1, wherein: The interlayer cooling layer (10) comprises support plates (11) arranged at the upper and lower ends, corresponding gas conveying holes (12) are formed through the support plates (11), cooling pipes (13) are arranged between the support plates (11) at the upper and lower ends, the cooling pipes (13) correspond to the gas conveying holes (12) respectively, ventilation grooves are formed between the cooling pipes (13), the ventilation grooves correspond to the ventilation openings on the main tank body, and the gas conveying holes (12) pass through the interlayer cooling layer (10).

5. The fixed bed inter-bed heat exchange structure according to claim 4, wherein: Sealing grooves are formed in the edges of the support plates (11), and sealing rings are sleeved in the sealing grooves and attached to the inner wall of the main tank body.

6. The fixed bed inter-bed heat exchange structure according to claim 1, wherein: A plurality of fixing members (14) are arranged in the form of an annular array and evenly distributed between the edges of the interlayer cooling layer (10) at the upper and lower ends, the fixing member (14) comprises a horizontally arranged clamping plate, a fixing plate is bent at an angle of 90 degrees and arranged at the outer side end of the clamping plate, a fixing hole is formed in the fixing plate, the fixing plate extends out of the ventilation opening (4), and the fixing member (14) is fixed to the main tank body by penetrating the fixing hole with a bolt, and the interlayer cooling layer (10) is clamped by the fixing member (14) and corresponds to the ventilation opening (4).

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