Catalyst material reaction device
By decomposing the catalyst bed into independent grid components and setting up "S"-shaped airflow channels, modular replacement of the catalyst is achieved, solving the problems of cumbersome catalyst replacement and low utilization rate in existing devices, and improving reaction efficiency and operational flexibility.
Patent Information
- Application Number
- CN202522450780.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-19
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-11-19
AI Technical Summary
Existing catalytic reaction devices suffer from problems such as cumbersome processes, significant downtime losses, inability to achieve precise local replacement, and low catalyst utilization during catalyst replacement, and their level of intelligent operation is insufficient.
A catalyst material reaction device is designed, which decomposes the overall catalyst bed into multiple independent grid components. By setting up transverse partitions to form "S"-shaped airflow channels, modular load-bearing is achieved. Pull-out material layers are set in the grid components to enable precise individual replacement and filling of the catalyst.
It enables modular replacement of catalysts, reduces downtime, improves catalyst utilization and operational flexibility, reduces operating costs, and supports continuous operation.
Smart Images
Figure CN223747539U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of reaction device technology, specifically relating to a catalyst material reaction device. Background Technology
[0002] Catalytic reactions, as a core process in modern chemical industry, are widely used in many key areas such as petroleum refining, chemical synthesis, environmental protection, and energy conversion. The performance of the catalyst and the design of the reaction equipment directly determine the reaction efficiency, energy consumption level, product quality, and the economic benefits of the entire production plant.
[0003] Currently, mainstream industrial catalytic reactors can be broadly classified into two categories: fixed-bed catalytic reactors and moving-bed (or fluidized-bed) catalytic reactors. While moving-bed or fluidized-bed reactors offer advantages in continuous catalyst regeneration, their complex structure, demanding operating conditions, severe catalyst wear, and susceptibility to dust entrainment make fixed-bed reactors the most widely used mainstream technology due to their simple structure, convenient operation, stable catalyst bed, minimal backmixing, and high catalytic efficiency. Various types of stationary tank catalytic reactors are typical examples of this technology.
[0004] However, both traditional fixed-bed and moving-bed catalytic converters suffer from some long-standing structural drawbacks that have not been effectively addressed, primarily in the catalyst replacement and regeneration process:
[0005] Catalyst replacement is a complex process with significant downtime losses. For fixed-bed reactors, when the catalyst becomes completely deactivated or reaches the end of its service life due to sintering, carbon buildup, poisoning, or other reasons, it must be replaced entirely. This process requires a complete shutdown of the reactor, involving a series of complex operations such as cooling, displacement, unloading, reloading, and reheating for reduction. The entire process is time-consuming, requiring substantial manpower and resources, and causing prolonged production line interruptions, resulting in substantial economic losses.
[0006] Precise, localized replacement is impossible, resulting in low catalyst utilization. In actual operation, catalyst bed deactivation often occurs unevenly. Due to concentration and temperature gradients of reactants within the bed, or uneven fluid distribution, the catalyst in the bed inlet area often deactivates preferentially, while catalysts in other areas retain considerable activity. However, the existing integrated tank structure dictates that the catalyst can only be treated as a whole. This "one-size-fits-all" replacement method results in the premature disposal of a large amount of still-active catalyst, increasing catalyst usage costs and generating unnecessary solid waste, which does not meet the requirements of green chemistry and sustainable development.
[0007] Online monitoring and maintenance are difficult, and the existing fixed structure makes it extremely difficult to evaluate the real-time state and locally maintain the catalyst bed inside. It is difficult for the operator to accurately locate the inactivation area without opening the reactor, and it is impossible to intervene or replace the specific inactivation module, and the flexibility and intelligent level of the system operation are greatly limited.
[0008] In summary, the existing catalytic reaction device has obvious deficiencies in the replaceability, economy and intelligent management of the catalyst. In order to overcome these defects, the industry urgently needs a new type of catalyst accessory device or reactor structure design. The design should be aimed at realizing the modularization and unitization of the catalyst installation and replacement, so as to replace the inactivated part specifically, maximize the utilization of catalyst activity, significantly reduce downtime, reduce operating costs, and improve the operation flexibility of the entire reaction system. Practical new type
[0009] The utility model discloses to solve the problem that catalyst replacement process is complicated, and the shutdown loss is big, and the precise, local replacement cannot be realized, and the utilization rate of catalyst is low, and provides a catalyst material reaction device.
[0010] In order to solve the above problem, the technical scheme of the utility model is:
[0011] The catalyst material reaction device, the shell top is equipped with the sealing cover plate, the shell inside is equipped with several groups of catalyst reaction units, the catalyst reaction unit includes several grid assemblies that are horizontally and vertically arranged and the support piece that fixes and interval each grid assembly, the support piece includes several support beams that are vertically arranged in the shell inside and the cross pipe that is horizontally fixed between each support beam, and the grid assembly is vertically stacked in the longitudinal space formed by every two columns of support beams.
[0012] The "S" shape airflow channel is formed between the two sides of the vertically stacked grid assemblies through the horizontal partition plate, and the bracket is arranged below the shell, the gas outlet is arranged at the top of the shell, and the gas inlet is arranged at the bottom of the shell.
[0013] The setting of the transverse partition plate forces the reaction gas to flow in an "S" shape when passing through the upper and lower stacked grid assemblies, thereby increasing the gas-solid contact time and path, promoting turbulence, preventing gas short circuiting, and significantly improving the reaction efficiency and mass transfer effect.
[0014] The support forms a firm framework inside the shell for supporting and fixing all the grid assemblies, ensuring the stability and safety of the entire catalyst bed under load and gas pressure, and providing a precise guiding basis for modular pulling.
[0015] The utility model discloses a whole catalyst bed is decomposed into multiple independent, pullable grid assemblies, realizes the modularization of catalyst bearing.
[0016] The grid assembly includes two rectangular frames composed of transverse beams and longitudinal beams, and the two rectangular frames are connected into a cuboid through connecting pipes.
[0017] The two ends of the pullable layer plate are provided with pull holes.
[0018] The internal space of the grid assembly is used to place catalysts.
[0019] The pullable layer plates on the top surface and the bottom surface can be pulled out, the catalysts can be loaded by pulling out the top pullable layer plate, and the catalysts can be unloaded by pulling out the bottom pullable layer plate.
[0020] Specifically, when loading from the top loading bin, the loading amount needs to be controlled; the bottommost grid assembly is loaded first, and the catalysts in the bottommost grid assembly need to be leveled after loading, then the pullable layer plate is inserted, and the catalysts in the upper grid assembly are loaded.
[0021] The catalysts can be unloaded by pulling out the individual grid assemblies or by pulling out all the pullable layer plates to make the catalysts in all the grid assemblies fall into the hopper for unified unloading.
[0022] The baffle is provided with a pull handle.
[0023] The support beam bottom is provided with a guide angle steel along the placement direction of the grid assembly.
[0024] The guide angle steel is installed at the support beam bottom and serves as a track for pulling the grid assembly, ensuring smooth and accurate alignment during pulling, and reducing operation difficulty and component wear.
[0025] The sealing cover plate is provided with a plurality of rectangular tubes below corresponding to the feeding bin position, forming a discharging channel between the rectangular tubes, which is in communication with the feeding bin and opposite to the pull-out layer plate below.
[0026] The wallboard door is provided with a door handle.
[0027] The wallboard door is rotatably connected with the shell through a hinge.
[0028] The beneficial effects of the utility model are as follows:
[0029] 1) The utility model decomposes the whole catalyst bed into a plurality of independent and pullable grid assemblies, realizes modularization of the catalyst, allows precise and individual replacement of the deactivated part, avoids overall replacement, and greatly improves catalyst utilization and operation flexibility.
[0030] 2) The utility model is provided with a plurality of catalyst reaction units in the shell, and when the catalyst is replaced, the reaction device does not need to be completely stopped, one group of catalyst reaction units is stopped, and the rest can still work normally, realizing continuous work.
[0031] 3) The grid assembly can realize overall loading and unloading of the catalyst in the vertical direction, and can also realize individual loading and unloading. BRIEF DESCRIPTION OF DRAWINGS
[0032] The drawings described herein are used to provide further understanding of the utility model and form a part of the utility model. In the drawings:
[0033] Figure 1 It is a perspective view of the catalyst material reaction device.
[0034] Figure 2 It is a front view of the catalyst material reaction device.
[0035] Figure 3 This is a cross-sectional view of the internal structure of the catalyst material reaction device described in this utility model;
[0036] Figure 4 This is a three-dimensional structural diagram of the grille assembly described in this utility model;
[0037] Figure 5 This is a bottom view of the sealing cover plate described in this utility model;
[0038] In the diagram: 1. Shell; 2. Wall panel door; 201. Door handle; 202. Hinge; 3. Sealing cover; 301. Feeding bin; 302. Rectangular tube; 303. Equal angle steel; 304. Discharge channel; 305. Channel steel; 4. Air inlet; 5. Air outlet; 6. Hopper; 7. Support; 8. Grating assembly; 801. Crossbeam; 802. Longitudinal beam; 803. Connecting pipe; 804. Reinforcing rib; 805. Baffle; 806. Pull-out handle; 807. Pull-out material shelf; 808. Connecting plate; 809. Stainless steel mesh; 8010. Air baffle; 8011. Pull-out hole; 9. Support beam; 10. Horizontal tube; 11. Upper partition; 12. Horizontal partition; 13. Lower partition; 14. Guide angle steel. Detailed Implementation
[0039] The present invention will be explained in detail below with reference to the embodiments.
[0040] Example
[0041] like Figures 1-5 As shown, the catalyst material reaction device includes a shell 1, two wall panel doors 2 are symmetrically arranged on the shell 1, a sealing cover 3 is provided on the top of the shell 1, and two sets of catalyst reaction units are symmetrically arranged inside the shell 1.
[0042] like Figure 1 , Figure 2 , Figure 3The catalyst reaction unit comprises 3 columns arranged transversely, 2 layers of grid assemblies 8 arranged vertically, and supports for fixing and spacing the grid assemblies 8, wherein the supports comprise 16 support beams 9 arranged vertically in 4 rows and 4 columns inside the shell 1, and 4 horizontal pipes 10 fixed transversely between the 4 columns of support beams 9, and two grid assemblies 8 are vertically stacked in the longitudinal space formed by every two columns of support beams 9; the bottom parts of the shells 1 corresponding to the two groups of catalyst reaction units are respectively provided with hoppers 6, and the corresponding sealing cover plates 3 are respectively provided with charging compartments 301, and the two groups of catalyst reaction units are spaced apart in the vertical direction by the vertically arranged upper partition plates 11 and lower partition plates 13, and the horizontal partition plates 12 are arranged at the corresponding positions on the two sides of every two stacked grid assemblies 8 in the vertical direction of each group of catalyst reaction units to separate the upper and lower spaces, the horizontal partition plates 12 are arranged at intervals on the two sides of the two stacked grid assemblies 8, and in this embodiment, the horizontal partition plates 12 transversely pass through the upper partition plates 11 and the lower partition plates 13 and are connected to the horizontal pipes 10 located in the middle of the two stacked grid assemblies 8, so as to cut off the middle space inside the two groups of symmetrically arranged catalyst reaction units, so that the two sides of the vertically stacked grid assemblies 8 form an "S" shaped passage, and the shell 1 is provided below with a support 7.
[0043] The arrangement of the horizontal partition plates 12 forces the reaction gas to flow in an "S" shape when passing through the upper and lower stacked grid assemblies 8, thereby increasing the gas-solid contact time and path, promoting turbulent flow, preventing gas short circuiting, and significantly improving the reaction efficiency and mass transfer effect.
[0044] The supports form a solid framework inside the shell 1 for supporting and fixing all the grid assemblies 8, thereby ensuring the stability and safety of the entire catalyst bed under the load and gas pressure, and the arrangement of the horizontal pipes 10 provides a precise guide basis for modular pulling.
[0045] The whole catalyst bed is divided into a plurality of independent and pullable grid assemblies 8, so that the modular loading of the catalyst is realized, the inactivated part can be accurately and individually replaced, the "one-size-fits-all" overall replacement is avoided, and the catalyst utilization rate and operation flexibility are greatly improved.
[0046] As Figure 4As shown, the grid assembly 8 includes two rectangular frames composed of cross beams 801 and longitudinal beams 802, the two rectangular frames are connected into a cuboid through connecting pipes 803, the rectangular frames are provided with reinforcing ribs 804 inside, the inside of the rectangular frames is bolted with stainless steel mesh 809, the top and bottom surfaces of the cuboid are slidably provided with pull-out material layer plates 807, the pull-out material layer plates 807 are arranged between the connecting pipes 803 and connecting plates 808, the front and rear surfaces of the cuboid are fixedly provided with baffle plates 805, and the cross beams 801 below the top of the two side rectangular frames are fixedly provided with gas baffle plates 8010. When the two rectangular frames composed of cross beams 801 and longitudinal beams 802 are too large, the rectangular frames can be further provided with cross beams 801 and longitudinal beams 802 inside for reinforcement. In this embodiment, longitudinal beams 802 are further arranged in the middle of the cross beams 801 for reinforcement.
[0047] Both ends of the pull-out material layer plate 807 are provided with pull-out holes 8011.
[0048] The gap between the connecting pipe 803 and the connecting plate 808 is sufficient to extend into the hook, the hook extends into the pull-out hole 8011, and the pull-out material layer plate 807 is pulled out using a lifting chain, which solves the problem that the internal filling of the catalyst is too heavy and it is difficult for a person to pull out the pull-out material layer plate 807.
[0049] The internal space of the grid assembly 8 is used to place the catalyst.
[0050] The pull-out material layer plates 807 on the top and bottom surfaces can be pulled out, the catalyst can be filled by pulling out the top pull-out material layer plate 807, and the catalyst can be unloaded by pulling out the bottom pull-out material layer plate 807. Only the pull-out material layer plate 807 of the bottom grid assembly 8 is retained, and the remaining pull-out material layer plates 807 are pulled out, so that the filling of all the grid assemblies 8 in the vertical direction can be performed from the charging bin 301.
[0051] Specifically, when filling from the top charging bin 301, the filling amount needs to be controlled; the lower grid assembly 8 is filled first, and after filling the catalyst in the lower grid assembly 8, the catalyst needs to be leveled, and then the pull-out material layer plate 807 is inserted, and the filling of the catalyst in the upper grid assembly 8 is performed. A little less is allowed after leveling, the grid assembly 8 is provided with cross beams 801 and gas baffle plates 8010, which allows a part of the catalyst to be filled less or the catalyst to be settled, and the cross beams 801 and the gas baffle plates 8010 can prevent the part of the catalyst that is not filled from short-circuiting and escaping.
[0052] The catalyst can be unloaded by pulling out a single grid assembly 8, or all the pull-out material layer plates 807 can be pulled out, so that all the catalysts in the grid assemblies 8 fall into the hopper 6 and are uniformly unloaded.
[0053] The baffle plate 805 is provided with a pull-out handle 806.
[0054] AsFigure 3 As shown, the support beam 9 bottom is provided with a guide angle steel 14 along the direction of the grid assembly 8 placement.
[0055] The guide angle steel 14 is installed at the bottom of the support beam 9 as a track for the grid assembly 8 to pull out, ensuring smooth and smooth pulling process and accurate alignment, reducing operation difficulty and component wear.
[0056] The horizontal pipe 10 and the guide angle steel 14 as the guide assembly are side guiding in this embodiment, and can also be bottom guiding according to actual conditions.
[0057] Another function of the guide angle steel 14 is to serve as an air isolation plate at the bottom of the grid assembly 8 to prevent gas from escaping directly from the bottom of the grid assembly 8 without passing through the catalyst in the grid assembly 8.
[0058] As shown in Figure 5 The lower part of the sealing cover plate 3 is provided with six square tubes 302 corresponding to the position of the feeding bin 301, three discharge channels 304 are formed between the square tubes 302, the discharge channels 304 are communicated with the feeding bin 301, three rows of pull-out material layer plates 807 are vertically arranged below the discharge channels 304, and a channel steel 305 is vertically arranged below the square tube 302. An equal angle steel 303 is arranged at the lower edge of the square tube 302. The equal angle steel 303 plays a guiding role when the grid assembly 8 is assembled, and is convenient to insert. In order to facilitate assembly, the square tube 302 on the sealing cover plate 3 does not directly contact the grid assembly 8, but a assembly space is reserved at this time, and the equal angle steel 303 prevents the flue gas from taking a shortcut.
[0059] As shown in Figure 1 , Figure 2 A door handle 201 is arranged on the wallboard door 2.
[0060] The wallboard door 2 is rotatably connected with the shell 1 through a hinge 202.
[0061] Working principle:
[0062] Open the two wallboard doors 2, place the bottom six grid assemblies 8 in the space between the two support beams 9, slide the two sides of the bottom into the space along the guide angle steel 14, then place the six grid assemblies 8 on the top of the bottom grid assemblies 8, slide the two sides of the bottom into the space along the horizontal pipe 10, pull out all the pull-out material layer plates 807 except the bottom grid assembly 8, open the cover of the feeding bin 301, fill the catalyst into the grid assembly 8 from the feeding channel formed by the square tube 302, first fill the lower half of the grid assembly, control the filling amount, and then flatten, and then add the pull-out material layer plates 807 in the lower grid assembly 8; after adding the pull-out material layer plates 807 in the lower part of the upper grid assembly 8, fill the upper catalyst, flatten, and then add the pull-out material layer plates 807 in the upper grid assembly 8.
[0063] Then open the two inlet 4 and outlet 5 valve, to be reactive gas from the bottom inlet 4 into, because of the obstruction of the diaphragm 12, can not directly upward movement, only lateral through the lower three filled with catalyst grid assembly 8 to carry on the reaction, gas through the bottom of three grid assembly 8, upward movement, then lateral through the upper three filled with catalyst grid assembly 8 to carry on further reaction, then continue to move upward, through the outlet 5 discharge, because of the lower baffle 13 and upper baffle 11 of the barrier, so that two groups of catalyst reaction unit independent reaction, when the need for catalyst replacement, stop one, the other can continue to work. Such as stop left catalyst reaction unit for catalyst replacement, the lower layer of grid assembly 8 inside the catalyst deactivation, and the upper layer of catalyst can continue to use, first by pulling the handle 806 will be extracted from the upper layer of grid assembly 8, then pull out the lower layer of grid assembly 8, the upper layer of grid assembly 8 push into the lower layer of grid assembly 8 position, the original lower layer of grid assembly 8 in the catalyst unloading after reloading, push the original upper layer of grid assembly 8 position, complete replacement, restart.
[0064] When the need for overall unloading, also can use the chain pull out all the pull material layer plate 807, so that all the grid assembly 8 inside the catalyst fall to the hopper 6 unified unloading.
Claims
1. A catalyst material reaction apparatus characterized by comprising: The utility model provides a kind of catalytic reactor, including shell (1), wallboard door (2) is equipped on the shell (1), the top of shell (1) is equipped with sealing cover plate (3), the inside of shell (1) is equipped with several groups of catalyst reaction unit, the catalyst reaction unit includes the grid assembly (8) of several groups of horizontal and vertical settings and the support of fixed and interval each grid assembly (8), the support includes the support beam (9) of several groups of vertical settings in the inside of shell (1) and the transverse pipe (10) of being fixed between each support beam (9), grid assembly (8) vertical stack is placed in the longitudinal space formed by every two columns of support beam (9);The bottom of corresponding shell (1) is equipped with hopper (6) between each group of catalyst reaction unit, the feeding bin (301) is opened on corresponding sealing cover plate (3), each group of catalyst reaction unit is spaced apart in vertical direction by vertical setting baffle, the lateral corresponding position of every two stacked grid assemblies (8) in vertical direction of each group of catalyst reaction unit is equipped with transverse baffle (12) and is cut off the space of upper and lower, transverse baffle (12) is spaced apart on the two sides of two stacked grid assemblies (8), so that the two sides of vertical stack grid assembly (8) form the "S" shape passage, the bracket (7) is equipped below shell (1), the top of shell (1) is equipped with gas outlet (5), and the bottom of shell (1) is equipped with gas inlet (4).
2. The catalyst material reaction apparatus of claim 1, wherein The grid assembly (8) includes two rectangular frames composed of crossbeam (801) and longitudinal beam (802), and the two rectangular frames are connected into a cuboid through connecting pipe (803). The rectangular frame is internally provided with reinforcing ribs (804), and the inner side of the rectangular frame is fixed with stainless steel mesh (809). The top surface and the bottom surface of the cuboid are slidably provided with pull-out material layer plates (807), which are arranged between the connecting pipe (803) and the connecting plate (808). The front surface and the rear surface of the cuboid are fixedly provided with baffle plates (805), and the crossbeam (801) at the top of the two side rectangular frames is fixedly provided with a baffle plate (8010) below.
3. The catalyst material reaction apparatus of claim 2, wherein, The pull-out material layer plates (807) are provided with pull-out holes (8011) at both ends.
4. The catalyst material reaction apparatus of claim 2, wherein The internal space of the grid assembly (8) is used for placing catalysts.
5. The catalyst material reaction apparatus of claim 2, wherein The baffle plate (805) is provided with a pull-out handle (806).
6. The catalyst material reaction apparatus of claim 1, wherein The bottom of the support beam (9) is provided with a guide angle steel (14) along the placement direction of the grid assembly (8).
7. The catalyst material reaction apparatus of claim 2, wherein The sealing cover plate (3) is provided with a plurality of square tubes (302) in parallel below the position corresponding to the feeding bin (301). The square tubes (302) form a discharging channel (304) therebetween, which is in communication with the feeding bin (301). The discharging channel (304) is opposite to the pull-out material layer plates (807) below. A channel steel (305) is provided perpendicularly to the direction of the square tubes (302). The square tubes (302) are provided with an equilateral angle steel (303) along the lower edge.
8. The catalyst material reaction apparatus of claim 1, wherein The wallboard door (2) is provided with a door handle (201).
9. The catalyst material reaction apparatus of claim 1, wherein, The wallboard door (2) is rotatably connected to the shell (1) through a hinge (202).