Large fixed bed reactor set with supporting structure

Abstract

The utility model relates to the technical field of chemical equipment, and discloses a large fixed bed reactor group with a supporting structure, which comprises a reactor body and a support, a plurality of groups of supporting legs are uniformly arranged at the bottom of the reactor body, and the tops of the supporting legs are detachably connected with the support through fastening bolts. The support is fixedly connected with the reactor body through a base plate, two groups of thermal expansion displacement plates are arranged between the tops of the supporting legs and the support, and a thermal insulation plate is arranged between the two groups of thermal expansion displacement plates. The large fixed bed reactor is convenient to transport and produce, risks caused by medium leakage and high temperature influence can be reduced, the use effect of the large fixed bed reactor is effectively improved, and the safety in the production process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to a large fixed bed reactor group provided with a support structure. Background Art

[0002] A fixed bed reactor is a reactor in which granular solid catalysts or solid reactants are filled in the reactor to form a stacked bed layer of a certain height. While a gas or liquid material flows through the gaps between the particles and passes through the stationary fixed bed layer, a heterogeneous reaction process is realized. The characteristic of this type of reactor is that the solid particles filled in the equipment do not move, and fixed bed reactors are widely used in gas-solid phase reactions and liquid-solid phase reaction processes.

[0003] For example, the invention patent application with the application number 202010174654.1 discloses a shell-and-tube fixed bed reactor, including a support base, a skirt installed on the support base, and a reactor main body installed on the skirt. Exhaust ports that are through and communicate with each other for discharging leaked gas of the reactor main body are provided on both sides of the skirt. Exhaust pipes are fixed in the exhaust ports. An exhaust branch pipe is arranged outside the skirt. Two ends of the exhaust branch pipe are respectively fixedly communicated with the exhaust pipes on both sides. A three-way connector is installed on the exhaust pipe. A first exhaust connecting pipe is fixed to the exhaust pipe through the three-way connector. A gas treatment device for continuously reacting and treating the leaked gas of the reactor main body is installed at one end of the first exhaust pipe away from the three-way connector.

[0004] There are at least the following problems in the prior art: First, most large fixed bed reactor groups adopt a skirt support structure. Due to the micro-leakage of toxic and explosive media in the connecting pipes of the lower tube box, it will accumulate inside the skirt, posing a great safety hazard and risk during the production and use of the equipment. Second, due to the large diameter of the reactor and the operation under high-temperature conditions, when using a skirt support structure, a large amount of heat is dissipated from the inner and outer surfaces of the skirt barrel wall, which will significantly reduce the process operability and increase energy consumption. Moreover, high temperature will also cause the support strength to decrease, reducing the safety and reliability of the equipment. Third, the skirt support structure cannot eliminate the influence of thermal expansion on the skirt under high-temperature operation, posing a safety hazard. Fourth, due to the relatively high overall support height of the reactor group, using a skirt support will increase the difficulty of equipment transportation, installation and maintenance, and increase the manufacturing cost. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model develops a large fixed bed reactor group provided with a support structure. The utility model can not only facilitate transportation and production, but also reduce the risks caused by medium leakage and high-temperature influence, effectively improve the use effect of the large fixed bed reactor, and improve the safety during the production process.

[0006] The technical solution for the present utility model to solve the technical problem is as follows: A large fixed-bed reactor group provided with a support structure includes a reactor body and also includes supports. A number of groups of legs are evenly arranged at the bottom of the reactor body. The top of the legs is detachably connected to the supports through fastening bolts. The supports are fixedly connected to the reactor body through backing plates. Two sets of thermal expansion displacement plates are arranged between the top of the legs and the supports, and a heat insulation plate is arranged between the two sets of thermal expansion displacement plates.

[0007] As an optimization, a top plate is arranged at the top of the legs, an oblong hole is arranged on the bottom plate of the support, a round hole corresponding to the oblong hole is arranged on the top plate, the diameter of the oblong hole is larger than that of the round hole, and the fastening bolts are arranged in the round hole and the oblong hole. By arranging the top plate, the oblong hole and the round hole, the legs can be stably connected to the supports, and the displacement amount required for thermal expansion is reserved, so that the support can move outwards through the oblong hole and generate relative displacement with the upper thermal expansion displacement plate; if there is a problem of relative sliding due to processing defects on the surface of the bottom plate of the support and the upper thermal expansion displacement plate, the support can drive the upper thermal expansion displacement plate, the heat insulation plate and the lower thermal expansion displacement plate to generate radial relative sliding on the surface of the stainless-steel top plate, thus effectively ensuring that the radial thermal expansion amount of the equipment can be eliminated.

[0008] As an optimization, the reactor body includes a shell-side cylinder and a lower tube sheet arranged at the bottom of the shell-side cylinder. Upper and lower annular channels are respectively arranged at the top and bottom of the outer side wall of the shell-side cylinder. Reinforcing rib plates are arranged between the upper and lower annular channels and the shell-side cylinder. By arranging the shell-side cylinder, production reaction can be carried out; by arranging the lower tube sheet, connection with pipelines can be achieved; by arranging the upper and lower annular channels and the reinforcing rib plates, the reactor body can be stabilized and the reaction force of the legs can be dispersed.

[0009] As an optimization, the top of the backing plate is connected to the outer side wall of the lower annular channel through an upper rib plate, and the bottom of the backing plate is connected to the outer side wall of the lower tube sheet through a lower rib plate. By arranging the upper and lower rib plates, the reactor body can be stabilized in cooperation with the reinforcing rib plates and the reaction force of the legs can be dispersed.

[0010] As an optimization, a number of groups of force guiding plates corresponding to the legs are arranged between the upper and lower annular channels. By arranging the force guiding plates, the reactor body can be stabilized in cooperation with the upper and lower rib plates and the reinforcing rib plates, the reaction force of the legs can be dispersed, and the force on the reactor body can be more reasonable.

[0011] As an optimization, a bottom plate is provided at the bottom of the support leg. A reinforcing plate is connected between the bottom plate and the support leg, and anchor bolts are provided on the bottom plate. By providing the bottom plate and the anchor bolts, the support leg can be stably installed on the ground, preventing the flammable and explosive medium inside the reactor body from flashing and exploding due to static electricity. By providing the reinforcing plate, the strength of the support leg can be enhanced, reducing the local stress at the connection between the bottom plate and the support leg. In addition to considering the weight load of the internal medium under normal operating conditions or pressure test conditions, the influence of wind load and seismic load is also fully considered.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] By providing the support leg, the reactor body can be supported, and the hollow bottom can avoid the accumulation of the medium, reducing the risk during the production process. By providing the support, the backing plate and the fastening bolts, the support leg can be detachably connected to the reactor body, reducing the difficulty of equipment transportation, installation and maintenance, and reducing the manufacturing cost. By providing the thermal expansion displacement plate, the radial thermal expansion of the equipment caused by the installation at normal temperature and production under high temperature conditions can be effectively eliminated. That is, when the equipment is running, after the reactor body expands, the support can drive the support to generate a radial offset on the upper thermal expansion displacement plate through the backing plate, thus ensuring the safe and reliable operation of the equipment. By providing the heat insulation plate, the problem of energy loss caused by high temperature heat transfer can be solved, and at the same time, the strength reduction of the support leg caused by high temperature can be avoided. The utility model can not only facilitate transportation and production, but also reduce the risks caused by medium leakage and high temperature effects, effectively improving the use effect of the large fixed bed reactor and improving the safety during the production process. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0015] Figure 2 It is a schematic diagram of the structure of the support leg in an embodiment of the utility model.

[0016] Figure 3 is Figure 2 The partial enlarged view of area A in

[0017] In the figure: 1, bottom plate; 2, support leg; 3, top plate; 4, support; 5, backing plate; 6, thermal expansion displacement plate; 7, heat insulation plate; 8, oblong hole; 9, round hole; 10, fastening bolt; 11, shell side cylinder; 12, lower tube sheet; 13, upper ring channel; 14, lower ring channel; 15, reinforcing rib plate; 16, upper rib plate; 17, lower rib plate; 18, force guiding plate; 19, reinforcing plate; 20, anchor bolt. Detailed Embodiment

[0018] To clearly illustrate the technical features of this solution, the present utility model will be elaborated in detail below through specific embodiments and in conjunction with its accompanying drawings.

[0019] Embodiment 1

[0020] Figures 1 to 3 This is an embodiment of the present utility model. As Figures 1 to 3 shown, a large fixed-bed reactor group provided with a support structure includes a reactor body and also includes a support 4. A number of groups of legs 2 are evenly arranged at the bottom of the reactor body. The legs 2 are made of H-shaped steel. The top of the legs 2 is detachably connected to the support 4 through fastening bolts 10. The support 4 is made of stainless steel. The support 4 is fixedly connected to the reactor body through a backing plate 5. Two groups of thermal expansion displacement plates 6 are arranged between the top of the legs 2 and the support 4. The thermal expansion displacement plates 6 are made of stainless steel plates. An insulating plate 7 is arranged between the two groups of thermal expansion displacement plates 6. The insulating plate 7 is an asbestos rubber plate with a small thermal conductivity, high temperature resistance and a relatively large friction coefficient.

[0021] By arranging the legs 2, the reactor body can be supported, and the hollow bottom can avoid the accumulation of media and reduce the risks during production use; by arranging the support 4, the backing plate 5 and the fastening bolts 10, the legs 2 can be detachably connected to the reactor body, which can reduce the difficulty of equipment transportation, installation and maintenance and reduce the manufacturing cost; by arranging the thermal expansion displacement plates 6, the radial thermal expansion amount of the equipment caused by the installation at normal temperature and production under high-temperature working conditions can be effectively eliminated. That is, during the operation of the equipment, after the reactor main body expands, the support 4 can be driven by the backing plate 5 to generate a radial offset on the upper thermal expansion displacement plate 6, thus ensuring the safe and reliable operation of the equipment; by arranging the insulating plate 7, the problem of energy loss caused by high-temperature heat transfer can be solved, and at the same time, the reduction of the strength of the legs 2 caused by high temperature can be avoided.

[0022] As Figures 1 to 3 shown, a top plate 3 is arranged at the top of the legs 2. A long circular hole 8 is vertically arranged on the bottom plate of the support 4. A circular hole 9 corresponding to the long circular hole 8 is arranged on the top plate 3. The diameter of the long circular hole 8 is larger than that of the circular hole 9. The fastening bolts 10 are arranged in the circular hole 9 and the long circular hole 8. The diameters of the bolt holes on the thermal expansion displacement plates 6 and the insulating plate 7 are all equal to the diameter of the long circular hole 8. By arranging the top plate 3, the long circular hole 8 and the circular hole 9, the legs 2 can be stably connected to the support 4, and the displacement amount required for thermal expansion is reserved, so that the support 4 can move outwards through the long circular hole 8 and generate a relative displacement with the upper thermal expansion displacement plate 6; if there is a problem with relative sliding due to processing defects on the surface between the bottom plate of the support 4 and the upper thermal expansion displacement plate 6, the support 4 can drive the upper thermal expansion displacement plate 6, the insulating plate 7 and the lower thermal expansion displacement plate 6 to generate a radial relative slip on the surface of the stainless-steel top plate 3, thus reliably ensuring that the radial thermal expansion amount of the equipment can be effectively eliminated.

[0023] AsFigure 1 As shown in the figure, the reactor body includes a shell-side cylinder 11 and a lower tube sheet 12 provided at the bottom of the shell-side cylinder 11. Reinforcing rib plates 15 are respectively provided at the top and bottom of the outer side wall of the shell-side cylinder 11 between the upper annular channel 13 and the lower annular channel 14. By providing the shell-side cylinder 11, a production reaction can be carried out; by providing the lower tube sheet 12, connection with pipelines can be achieved; by providing the upper annular channel 13, the lower annular channel 14 and the reinforcing rib plates 15, the reactor body can be stabilized and the reaction force of the support leg 2 can be dispersed.

[0024] As Figure 1 shown in the figure, the top of the backing plate 5 is fixedly connected to the outer side wall of the lower annular channel 14 through an upper rib plate 16, and the bottom of the backing plate 5 is fixedly connected to the outer side wall of the lower tube sheet 12 through a lower rib plate 17. By providing the upper rib plate 16 and the lower rib plate 17, the reactor body can be stabilized in cooperation with the reinforcing rib plates 15, and the reaction force of the support leg 2 can be dispersed.

[0025] As Figure 1 shown in the figure, several groups of force guiding plates 18 corresponding to the support legs 2 are provided between the upper annular channel 13 and the lower annular channel 14. By providing the force guiding plates 18, in cooperation with the upper rib plate 16, the lower rib plate 17 and the reinforcing rib plates 15, the reactor body can be stabilized, the reaction force of the support leg 2 can be dispersed, and the force on the reactor body can be made more reasonable.

[0026] As Figure 1 and Figure 2 shown in the figure, a bottom plate 1 is provided at the bottom of the support leg 2, a reinforcing plate 19 is connected between the bottom plate 1 and the support leg 2, and anchor bolts 20 are provided on the bottom plate 1. By providing the bottom plate 1 and the anchor bolts 20, the support leg 2 can be stably installed on the ground, and it can prevent the explosion-prone medium in the reactor body from flashing and exploding due to electrostatic action; by providing the reinforcing plate 19, the strength of the support leg 2 can be enhanced, the local stress at the connection between the bottom plate 1 and the support leg 2 can be reduced, and in addition to considering the weight load of the internal medium under normal operating conditions or pressure test conditions, the influence of wind load and seismic load is also fully considered.

[0027] During use, the outrigger 2 is stably grounded through the bottom plate 1 and the anchor bolts 20, and the top plate 3 of the outrigger 2 is stably connected to the support 4 through the fastening bolts 10; during the operation of the equipment, since the diameter of the oblong hole 8 is larger than that of the round hole 9, after the reactor body expands due to heat, it can drive the support 4 to generate an outward radial offset on the upper thermal expansion displacement plate 6 through the backing plate 5. The non-metallic material of the heat insulation plate 7 has a relatively large coefficient of friction. Therefore, there is basically no relative displacement between the heat insulation plate 7 and the upper and lower thermal expansion displacement plates 6 on both sides of it, thus ensuring the safe and reliable operation of the equipment; if there is a problem with relative sliding due to processing defects on the surface between the bottom plate of the support 4 and the upper thermal expansion displacement plate 6, the support 4 can drive the upper thermal expansion displacement plate 6, the heat insulation plate 7 and the lower thermal expansion displacement plate 6 to generate a radial relative displacement on the surface of the top plate 3 made of stainless steel, thus ensuring that the radial thermal expansion of the equipment can be effectively eliminated; at the same time, the heat insulation plate 7 prevents the reactor body from transferring heat to the outrigger 2, solves the energy loss caused by high-temperature heat transfer, and avoids the reduction of the strength of the outrigger 2 caused by high temperature. The utility model can not only facilitate transportation and production, but also reduce the risks caused by medium leakage and high-temperature influence, effectively improve the use effect of the large fixed-bed reactor, and improve the safety during the production process.

[0028] In the present utility model, the description of the orientation or relative position relationship of the structure, such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicates the orientation or relative position relationship based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the structure referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present utility model.

Claims

1. A large fixed bed reactor group provided with a support structure, comprising a reactor body, characterized in that: The reactor also comprises a support (4), a plurality of groups of legs (2) being evenly arranged at the bottom of the reactor body, the tops of the legs (2) being detachably connected to the support (4) via fastening bolts (10), the support (4) being fixedly connected to the reactor body via a pad (5), two groups of thermal expansion displacement plates (6) being arranged between the tops of the legs (2) and the support (4), and a heat insulation plate (7) being arranged between the two groups of thermal expansion displacement plates (6).

2. A large fixed bed reactor group provided with a support structure according to claim 1, characterized in that: A top plate (3) is provided on the top of the support leg (2), an oblong hole (8) is provided on the bottom plate of the support seat (4), a round hole (9) corresponding to the oblong hole (8) is provided on the top plate (3), the diameter of the oblong hole (8) is larger than the round hole (9), and a fastening bolt (10) is arranged in the round hole (9) and the oblong hole (8).

3. A large fixed bed reactor group provided with a support structure according to claim 2, characterized in that: The reactor body comprises a shell-side cylinder (11) and a lower tube box (12) arranged at the bottom of the shell-side cylinder (11); an upper ring channel (13) and a lower ring channel (14) are respectively arranged at the top and bottom of the outer side wall of the shell-side cylinder (11); and reinforcing rib plates (15) are arranged between the upper ring channel (13), the lower ring channel (14) and the shell-side cylinder (11).

4. A large fixed bed reactor group provided with a support structure according to claim 3, characterized in that: The top of the pad (5) is connected to the outer side wall of the lower ring channel (14) through an upper rib plate (16), and the bottom of the pad (5) is connected to the outer side wall of the lower pipe box (12) through a lower rib plate (17).

5. A large fixed bed reactor group provided with a support structure according to claim 4, characterized in that: A plurality of groups of force guide plates (18) corresponding to the supporting legs (2) are provided between the upper ring track (13) and the lower ring track (14).

6. A large fixed bed reactor group provided with a support structure according to any one of claims 1 to 5, characterized in that: A bottom plate (1) is provided at the bottom of the supporting leg (2), a reinforcing plate (19) is connected between the bottom plate (1) and the supporting leg (2), and anchor bolts (20) are provided on the bottom plate (1).

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