Device for solving catalyst leakage of cylindrical shell and tube reactor
A modular support system for large-diameter tube-type heat exchangers addresses catalyst leakage by using interlocking grids and support rings, ensuring safe and stable reactor operation.
Patent Information
- Application Number
- CN202421908150.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-08
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-08
AI Technical Summary
When the diameter of the cylinder tube reactor is large, the catalyst is prone to leak due to deformation or holes in the wire mesh, resulting in safety hazards and environmental impact.
A grille and segmented support ring structure consisting of multiple blocks is adopted. The support ring and grille are formed by bolted connections. The cross beam is fixed under the grille to prevent the grille from falling and enhance load-bearing capacity.
It effectively eliminates catalyst leakage, ensures the safe and stable operation of the device, and reduces safety hazards and environmental damage from start-up and shutdown.
Smart Images
Figure CN223096749U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a device for solving the catalyst leakage of a cylindrical tube reactor, belonging to the field of chemical production equipment. Background Art
[0002] The cylindrical shell-and-tube reactor is widely used in chemical production equipment. For example, the reactors of the reaction units in cracking units and dehydrogenation units mostly adopt this structure. The shell side of this structure is generally heated by heat transfer oil, while the tube side is filled with catalyst. The catalyst is evenly added to the shell and tube, and the catalyst is intercepted by wire mesh at the bottom of the shell and tube. The wire mesh is fixed by bolts. For reactors with smaller diameters, the wire mesh will not have any problems with bearing weight, but for reactors with larger diameters, the wire mesh is particularly prone to deformation, and it is very easy for the wire mesh to fall off or have holes, which will lead to catalyst leakage. Summary of the invention
[0003] According to the problem described in the background, the problem to be solved by the utility model is: to provide a device for solving the catalyst leakage of a cylindrical shell-and-tube reactor, the device is composed of a grid composed of multiple blocks and a segmented support ring. By installing this device in the reactor, the problem of catalyst leakage can be solved, and safety hazards and environmental impacts can also be solved to ensure safe operation.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: Provide a device for solving the catalyst leakage of a cylindrical shell-and-tube reactor, including a grille, a support ring and a crossbeam, the grille including a half-moon grille and a long strip grille, because the diameter is too large and the weight of the one-piece type is too large, there are great difficulties in installation, so the one-piece type is changed to a three-piece splicing style, the support ring includes a short support ring and a long support ring, which are connected by bolts, a short support ring is fixed at each end of the long support ring, and a long support ring is fixed at the other end of the two short support rings, and the two groups of long and short support rings form a circular ring, and two half-moon grilles and a long strip grille are placed above the support ring, starting from one direction, they are a half-moon grille, a long strip grille and a half-moon grille, corresponding to the circular ring formed by the support ring, the crossbeam is located in the middle of the support ring and below the grille, and the direction is perpendicular to the stripe direction of the grille to prevent the grille placed on the support ring from falling.
[0005] The half-moon grille includes half-moon grille bars and half-moon grille supports. The half-moon grille bars are arranged in sequence in a half-moon shape. The half-moon grille supports are perpendicular to the half-moon grille bars and cross the half-moon grille bars, thereby reinforcing the grille.
[0006] The long grille includes long grille bars and long grille supports. The long grille bars are arranged in sequence to form a circular middle strip. The long grille supports are perpendicular to the long grille bars and cross the long grille bars to reinforce the grille.
[0007] The short support ring includes short support rods and short bolts. Both ends of the short support rods are in a sunken style, and two groups of short bolts are provided on each sunken platform.
[0008] The long support ring includes long support rods, fixed bolts and long bolts. Both ends of the long support rods are in a suspended style, and two groups of long bolts are provided on each suspended platform. Three groups of fixed bolts are evenly distributed on the non-suspended part of the long support rods for fixing inside the reactor.
[0009] The cross beam includes cross beam supports, cross beam rods, cross beam bolts and cross beam fastening bolts. One end of each two cross beam supports is fixed on the long support rod, and two groups of cross beam fastening bolts are provided at the other end. Two groups of cross beam fastening bolts are also provided at both ends of the cross beam rod. The cross beam fastening bolts on the cross beam rod correspond to the cross beam fastening bolts on the cross beam support, so that the cross beam rod is fixed on the long support rod. Three groups of cross beam bolts are provided on the cross beam rod for fixing inside the reactor, increasing the load-bearing capacity of the spliced grille.
[0010] Preferably, the grille shape formed by the semi-circular grille and the long strip grille is circular, and the support ring formed by the short support ring and the long support ring is circular. The specific shape should be the same as the inner shape of the reactor.
[0011] Preferably, the short bolts at both ends of the short support rods correspond one by one to the long bolts at both ends of the long support rods, and the sunken platform and the suspended platform can be docked.
[0012] Preferably, the fixed bolts are of a fixed welding bolt hole structure, and the bolt fastening device is directly welded on the cylinder body, further increasing the load-bearing strength and avoiding leakage of the agent.
[0013] Working principle: Due to the reasons of the tube side inside the reactor, it is impossible to open an opening from above, and installation can only be carried out from below. First, install two groups of long support rings and fix them inside the reactor. Place two groups of semi-circular grilles on the long support rings, then put the long strip grille in the middle, and then fix the short support ring. To prevent the grille from falling, fix the cross beam on the support ring.
[0014] The beneficial effects of the present utility model are as follows:
[0015] 1. Through the support ring and support grille structures used in the present utility model, the possibility of agent leakage is fundamentally eliminated. As a chemical enterprise, once the reactor leaks the agent, the device will be forced to stop operation, and the loss of one start-up and shutdown will be tens of thousands of yuan, having a greater impact on the benefits.
[0016] 2. Each start-up and shutdown of the device will greatly increase the potential safety hazards and environmental damage. Through the transformation, the possibility of catalyst leakage from the reactor can be completely solved, ensuring the safe, stable and long-term operation of the device. Description of the Drawings
[0017] Figure 1 It is a simplified structural diagram of the utility model;
[0018] Figure 2 is a schematic diagram of the structure of the grille;
[0019] Figure 3 It is a structural schematic diagram of the support ring;
[0020] Figure 4 It is a side view of the utility model;
[0021] In the figure: 1 is a half-moon grille; 2 is a long grille; 3 is a short support ring; 4 is a long support ring; 5 is a crossbeam; 11 is a half-moon grille bar; 12 is a half-moon grille support; 21 is a long grille bar; 22 is a long grille support; 31 is a short support rod; 32 is a short bolt; 41 is a long support rod; 42 is a fixing bolt; 43 is a long bolt; 51 is a crossbeam support; 52 is a crossbeam rod; 53 is a crossbeam bolt; 54 is a crossbeam fastening bolt. DETAILED DESCRIPTION
[0022] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings:
[0023] Example 1
[0024] like Figures 1-4 As shown, the utility model includes a grille, a support ring and a crossbeam 5, the grille includes a half-moon grille 1 and a long strip grille 2. Since the diameter is too large and the weight of the one-piece type is too large, it is difficult to install, so the one-piece type is changed to a three-piece splicing style, the support ring includes a short support ring 3 and a long support ring 4, which are connected by bolts, and a short support ring 3 is fixed at both ends of the long support ring 4, and a long support ring 4 is fixed at the other end of the two short support rings 3, and the two groups of long and short support rings form a circular ring, and two half-moon grilles 1 and a long strip grille 2 are placed above the support ring. Starting from one direction, they are the half-moon grille 1, the long strip grille 2 and the half-moon grille 1, corresponding to the circular ring composed of the support ring, the crossbeam 5 is located in the middle of the support ring and below the grille, and the direction is perpendicular to the stripe direction of the grille to prevent the grille placed on the support ring from falling.
[0025] The half-moon grille 1 includes half-moon grille bars 11 and half-moon grille supports 12. The half-moon grille bars 11 are arranged in sequence in a half-moon shape. The half-moon grille supports 12 are perpendicular to the half-moon grille bars 11 and cross with the half-moon grille bars 11, so as to strengthen the grille.
[0026] The long grille 2 includes long grille bars 21 and long grille supports 22. The long grille bars 21 are arranged in sequence to form a circular middle long strip. The long grille supports 22 are perpendicular to the long grille bars 21 and cross the long grille bars 21 to strengthen the grille.
[0027] The short support ring 3 includes short support rods 31 and short bolts 32. Both ends of the short support rods 31 are in a sunken style, and two groups of short bolts 32 are provided on each sunken platform.
[0028] The long support ring 4 includes long support rods 41, fixing bolts 42 and long bolts 43. Both ends of the long support rods 41 are in a suspended style, and two groups of long bolts 43 are provided on each suspended platform. Three groups of fixing bolts 42 are evenly distributed on the non-suspended part of the long support rods 41 for fixing inside the reactor.
[0029] The cross beam 5 includes cross beam supports 51, cross beam rods 52, cross beam bolts 53 and cross beam fastening bolts 54. One end of each two cross beam supports 51 is fixed on the long support rods 41, and two groups of cross beam fastening bolts 54 are provided at the other end. Two groups of cross beam fastening bolts 54 are also provided at both ends of the cross beam rod 52. The cross beam fastening bolts 54 of the cross beam rod 52 correspond to the cross beam fastening bolts 54 of the cross beam supports 51, so that the cross beam rod 52 is fixed on the long support rods 41. Three groups of cross beam bolts 53 are provided on the cross beam rod 52 for fixing inside the reactor, increasing the load-bearing capacity of the spliced grid.
[0030] The grid shape composed of the semi-circular grids 1 and the strip grids 2 is circular, and the support ring composed of the short support ring 3 and the long support ring 4 is circular. The specific shape should be the same as the inner shape of the reactor.
[0031] The short bolts 32 at both ends of the short support rods 31 correspond to the long bolts 43 at both ends of the long support rods 41, and the sunken platform and the suspended platform can be butted.
[0032] The fixing bolt 42 is of a fixed welded bolt hole structure, and the bolt fastening device is directly welded on the cylinder body, further increasing the load-bearing strength and avoiding leakage of the agent.
[0033] Due to the reasons of the internal tube pass of the reactor, it is impossible to open from the top, and it can only be installed from the bottom. First, install two groups of long support rings 4 and fix them inside the reactor. Place two groups of semi-circular grids 1 on the long support rings 4, then put the strip grids 2 in the middle, and then fix the short support rings 3. To prevent the grids from falling, fix the cross beam 5 on the support ring.
Claims
1. An apparatus for solving the catalyst leakage of a shell-and-tube reactor, characterized in that It includes a grille, a support ring and a cross beam (5). The grille includes a semi - moon grille (1) and a long strip grille (2). The support ring includes a short support ring (3) and a long support ring (4). One short support ring (3) is fixed at each end of the long support ring (4), and the other ends of the two short support rings (3) fix a long support ring (4). Two semi - moon grilles (1) and one long strip grille (2) are placed on the support ring. Starting from one direction, they are the semi - moon grille (1), the long strip grille (2) and the semi - moon grille (1) respectively. The cross beam (5) is located in the middle of the support ring and below the grille, and its direction is perpendicular to the stripe direction of the grille.
2. The device for solving the catalyst leakage of the shell-and-tube reactor according to claim 1, characterized in that, The semi - moon grille (1) includes semi - moon grille bars (11) and semi - moon grille supports (12). The semi - moon grille bars (11) are arranged in sequence, and the semi - moon grille supports (12) are perpendicular to and cross the semi - moon grille bars (11).
3. The device for solving the catalyst leakage of the tubular reactor according to claim 1, characterized in that, The long strip grille (2) includes long strip grille bars (21) and long strip grille supports (22). The long strip grille bars (21) are arranged in sequence, and the long strip grille supports (22) are perpendicular to and cross the long strip grille bars (21).
4. The device for solving the catalyst leakage of the shell-and-tube reactor according to claim 1, wherein, The short support ring (3) includes short support rods (31) and short bolts (32). The two ends of the short support rods (31) are in a sunken style, and two groups of short bolts (32) are provided on each sunken platform.
5. The device for solving the catalyst leakage of the shell-and-tube reactor according to claim 1, characterized in that The long support ring (4) includes long support rods (41), fixing bolts (42) and long bolts (43). The two ends of the long support rods (41) are in a suspended style, and two groups of long bolts (43) are provided on each suspended platform. Three groups of fixing bolts (42) are evenly distributed on the non - sunken part of the long support rods (41).
6. The device for solving the catalyst leakage of the shell-and-tube reactor according to claim 1 or 5, characterized in that, The cross beam (5) includes cross - beam supports (51), cross - beam rods (52), cross - beam bolts (53) and cross - beam fastening bolts (54). One end of every two cross - beam supports (51) is fixed on the long support rods (41), and the other end is provided with two groups of cross - beam fastening bolts (54). Two groups of cross - beam fastening bolts (54) are also provided at both ends of the cross - beam rod (52). The cross - beam fastening bolts (54) on the cross - beam rod (52) correspond to the cross - beam fastening bolts (54) on the cross - beam supports (51). Three groups of cross - beam bolts (53) are provided on the cross - beam rod (52).
7. The device for solving the catalyst leakage of the shell-and-tube reactor according to claim 1, wherein The grille shape composed of the semi - moon grille (1) and the long strip grille (2) is circular, and the support ring composed of the short support ring (3) and the long support ring (4) is circular.
8. The device for solving the catalyst leakage of the shell-and-tube reactor according to claim 4, characterized in that, The short bolts (32) at both ends of the short support rods (31) correspond to the long bolts (43) at both ends of the long support rods (41) one by one.
9. The device for solving the catalyst leakage of the shell-and-tube reactor according to claim 5, wherein The fixing bolts (42) are of a fixed - welding bolt - hole structure.