Multi-stage mixer suitable for acetylene cracking furnace
By designing a multi-stage mixer in an acetylene cracking furnace, and using mesh plates and support components to achieve oxygen dispersion and multi-stage mixing, the problem of poor mixing effect between oxygen and natural gas in the prior art is solved, and the efficiency of the mixer is improved. Practicality.
Patent Information
- Application Number
- CN202420870530.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-24
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-24
AI Technical Summary
The multi-stage mixer of existing acetylene cracking furnaces lacks dispersion function, resulting in poor mixing effect of oxygen and natural gas, reducing the working efficiency and practicality of the mixer.
A multi-stage mixer including three shells is designed. By setting up a mesh plate and support assembly, the dispersion and multi-stage mixing of oxygen are achieved, which improves the mixing effect of oxygen and natural gas, and the structure of worm and threaded rods is achieved. Convenient to disassembly and install mesh plates.
It improves the working efficiency and practicality of the mixer, facilitates users to maintain and replace the mesh plate, and increases the stability and multi-stage mixing effect of the mixer.
Smart Images
Figure CN222196540U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of acetylene cracking furnace mixers, in particular to a multi-stage mixer suitable for acetylene cracking furnaces. Background Art
[0002] Acetylene, as the basic raw material of petrochemical industry, is known as the "mother of organic chemical industry". A large number of fine chemical products can be produced from acetylene. The production of acetylene and its downstream products using natural gas as raw material can greatly change the structure of the natural gas chemical industry and increase the value chain of natural gas. The partial oxidation of natural gas to produce acetylene is the main method in the industry at present. The mixing of natural gas and oxygen in the acetylene cracking furnace is the key to affecting the subsequent acetylene yield, and the structure of the mixer determines the mixing efficiency of natural gas and oxygen. Therefore, the structure of the mixer is one of the key factors affecting the operating performance of the natural gas partial oxidation acetylene device.
[0003] For example, Chinese patent CN217594326U discloses a multi-stage mixer suitable for an acetylene cracking furnace, comprising a plurality of mixing units connected in series, wherein the mixing units comprise an expanding section, a reducing section and a transition section arranged in sequence, and a natural gas inlet and an oxygen inlet are respectively arranged on the first mixing unit. However, the mixer does not have a dispersion function, resulting in a reduction in the mixing effect of oxygen and natural gas, thereby reducing the working efficiency of the mixer, being inconvenient for users to use, and reducing the practicality of the mixer. Therefore, a multi-stage mixer suitable for an acetylene cracking furnace is proposed to solve the above-mentioned problems. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a multi-stage mixer suitable for an acetylene cracking furnace, which has the advantages of improving mixing efficiency, etc., and solves the problem that the mixer does not have a dispersion function, resulting in a reduced mixing effect of oxygen and natural gas, thereby reducing the working efficiency of the mixer, being inconvenient for users to use, and reducing the practicability of the mixer.
[0005] To achieve the above object, the utility model provides the following technical solutions: a multi-stage mixer suitable for an acetylene cracking furnace, comprising three shells, the three shells are fixedly connected to each other through a connecting pipe, a natural gas inlet pipe is fixedly connected to the top of the shell, two mixing mechanisms are arranged on the shell, a supporting assembly is arranged on the shell, and a mixing assembly is arranged on the shell;
[0006] The mixing mechanism includes an oxygen inlet pipe fixedly connected to the shell, the inner bottom wall and the inner top wall of the oxygen inlet pipe are fixedly connected to support blocks, mesh plates are slidably connected to the two support blocks, the top and bottom of the oxygen inlet pipe are fixedly connected to a box body, a worm rotatably connected between the left and right sides of the inner walls of the two boxes, the insides of the two boxes are rotatably connected to threaded rods, the outer sides of the two threaded rods are fixedly connected to worm wheels meshing with the worms, and the outer sides of the threaded rods are threadedly connected to limit blocks.
[0007] Furthermore, the support assembly includes a positioning block fixedly connected to the limit block, the inner wall of the box body is provided with a positioning groove slidably connected to the outer side of the positioning block, the interior of the positioning groove is fixedly connected to a positioning rod, and the outer side of the positioning rod is sleeved with a limit spring.
[0008] Furthermore, the mixing assembly comprises an enlarged diameter section arranged on the shell, the shell is provided with a reduced diameter section, and the connecting pipe is provided with a transition section.
[0009] Furthermore, a cylinder is fixedly connected to the interior of the shell, and the top and bottom of the cylinder are both conical.
[0010] Furthermore, a handle is fixedly connected to the worm for easy rotation.
[0011] Furthermore, a limiting groove is provided on the mesh plate, and the size of the limiting groove is adapted to the size of the limiting block.
[0012] Furthermore, a sliding through hole is provided inside the positioning block, and the inside of the sliding through hole is slidably connected to the outside of the positioning rod.
[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0014] 1. The multi-stage mixer suitable for the acetylene cracking furnace achieves the effect of dispersing oxygen by setting a mesh plate, thereby improving the mixing effect of oxygen and natural gas, thereby improving the working efficiency of the mixer, and also facilitates the rapid disassembly and installation of the mesh plate, thereby facilitating the replacement and maintenance of the mesh plate, facilitating the use of users, and increasing the practicality of the mixer.
[0015] 2. The multi-stage mixer suitable for the acetylene cracking furnace achieves the effect of supporting the limit block by setting a support component, thereby increasing the stability of the limit block when it is limited and fixed, and achieves the purpose of multi-stage mixing by setting multiple diameter expansion sections, diameter reduction sections and transition sections, greatly improving the mixing efficiency and mixing effect, facilitating the use of users, and increasing the practicality of the mixer. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1It is a schematic diagram of the structure of the utility model;
[0017] Figure 2 This is a schematic diagram of the structure of the hybrid mechanism of the utility model;
[0018] Figure 3 For this utility model Figure 2 Schematic diagram of the structure at A in the middle;
[0019] Figure 4 It is a schematic diagram of the cylinder structure of the utility model.
[0020] In the figure: 1. shell; 2. connecting pipe; 3. natural gas inlet pipe; 4. turning handle; 5. oxygen inlet pipe; 6. support block; 7. mesh plate; 8. box; 9. worm; 10. threaded rod; 11. worm wheel; 12. limit block; 13. positioning block; 14. positioning groove; 15. positioning rod; 16. limit spring; 17. expansion section; 18. reduction section; 19. transition section; 20. cylinder. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] See also Figure 1-4 In this embodiment, a multistage mixer suitable for an acetylene cracking furnace includes three shells 1, a cylinder 20 is fixedly connected inside the shell 1, the top and bottom of the cylinder 20 are both conical, the three shells 1 are fixedly connected to each other through a connecting pipe 2, a natural gas inlet pipe 3 is fixedly connected to the top of the shell 1, two mixing mechanisms are arranged on the shell 1, a supporting assembly is arranged on the shell 1, and a mixing assembly is arranged on the shell 1.
[0023] It should be noted that the cylinder 20 is provided to facilitate dispersion of the natural gas.
[0024] See also Figure 1-4 In this embodiment, the mixing mechanism includes an oxygen inlet pipe 5 fixedly connected to the shell 1, the inner bottom wall and the inner top wall of the oxygen inlet pipe 5 are fixedly connected to support blocks 6, and mesh plates 7 are slidably connected to the two support blocks 6, and the mesh plates 7 are provided with limiting grooves.
[0025] It should be noted that the effect of dispersing oxygen is achieved, thereby improving the mixing effect of oxygen and natural gas, and further improving the working efficiency of the mixer.
[0026] See also Figure 1-4 In this embodiment, the top and bottom of the oxygen inlet pipe 5 are fixedly connected to a box body 8, a worm 9 is rotatably connected between the left and right sides of the inner walls of the two boxes 8, and a handle 4 for convenient rotation is fixedly connected to the worm 9. The insides of the two boxes 8 are rotatably connected to threaded rods 10, and the outer sides of the two threaded rods 10 are fixedly connected to worm wheels 11 meshing with the worm 9. The outer sides of the threaded rods 10 are threadedly connected to limit blocks 12, and the size of the limit groove is adapted to the size of the limit block 12.
[0027] It should be noted that the mesh plate 7 can be quickly disassembled and installed, thereby facilitating the replacement and maintenance of the mesh plate 7 .
[0028] See also Figure 1-4 In this embodiment, the support assembly includes a positioning block 13 fixedly connected to the limit block 12, a sliding through hole is provided inside the positioning block 13, a positioning groove 14 is provided on the inner wall of the box body 8 and is slidably connected to the outer side of the positioning block 13, a positioning rod 15 is fixedly connected inside the positioning groove 14, the inside of the sliding through hole is slidably connected to the outer side of the positioning rod 15, and a limiting spring 16 is sleeved on the outer side of the positioning rod 15.
[0029] It should be noted that the limiting support for the limiting block 12 increases the stability of the limiting block 12 when it is limited and fixed.
[0030] See also Figure 1-4 In this embodiment, the mixing assembly includes an expanded diameter section 17 arranged on the shell 1, a reduced diameter section 18 is arranged on the shell 1, and a transition section 19 is arranged on the connecting pipe 2.
[0031] It should be noted that by providing a plurality of diameter expansion sections 17, diameter reduction sections 18 and transition sections 19, the purpose of multi-stage mixing is achieved, which greatly improves the mixing efficiency and mixing effect.
[0032] The working principle of the above embodiment is: the multi-stage mixer suitable for acetylene cracking furnace,
[0033] 1) When in use, natural gas enters the interior of the housing 1 through the natural gas inlet pipe 3, and the natural gas is dispersed by setting the cylinder 20. At the same time, oxygen enters the interior of the housing 1 through the oxygen inlet pipe 5, and the mesh plate 7 is set to disperse the oxygen, thereby improving the mixing effect of oxygen and natural gas, and further improving the working efficiency of the mixer.
[0034] 2) By setting a plurality of diameter expansion sections 17, diameter reduction sections 18 and transition sections 19, the purpose of multi-stage mixing is achieved, and the mixing efficiency and mixing effect are greatly improved. The handle 4 is turned, and the handle 4 drives the worm 9 to rotate, and the worm 9 drives the worm wheel 11 to rotate, and the worm wheel 11 drives the threaded rod 10 to rotate, and the threaded rod 10 drives the two limit blocks 12 to move in opposite directions and be pulled out from the limit grooves provided on the mesh plate 7, so that the mesh plate 7 can be quickly disassembled and installed, thereby facilitating the replacement and maintenance of the mesh plate 7. The replaced mesh plate 7 is placed on the two support blocks 6, and then the mesh plate 7 is limited and fixed by the limit blocks 13.
[0035] 3) By providing the positioning block 13, the positioning groove 14, the positioning rod 15 and the limiting spring 16, the limiting block 12 is supported, the stability of the limiting block 12 when it is limited and fixed is increased, the use of the user is convenient, and the practicality of the mixer is increased.
[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A multi-stage mixer suitable for an acetylene cracking furnace, comprising three shells (1), characterized in that: The three shells (1) are fixedly connected to each other via a connecting pipe (2), a natural gas inlet pipe (3) is fixedly connected to the top of the shell (1), two mixing mechanisms are provided on the shell (1), a supporting assembly is provided on the shell (1), and a mixing assembly is provided on the shell (1); The mixing mechanism comprises an oxygen inlet pipe (5) fixedly connected to the shell (1), the inner bottom wall and the inner top wall of the oxygen inlet pipe (5) are fixedly connected to a support block (6), two mesh plates (7) are slidably connected to the support blocks (6), the top and bottom of the oxygen inlet pipe (5) are fixedly connected to a box (8), a worm (9) is rotatably connected between the left and right sides of the inner walls of the two boxes (8), the insides of the two boxes (8) are rotatably connected to a threaded rod (10), the outer sides of the two threaded rods (10) are fixedly connected to a worm wheel (11) meshed with the worm (9), and the outer sides of the threaded rods (10) are threadedly connected to a limit block (12).
2. The multi-stage mixer suitable for an acetylene cracking furnace according to claim 1, characterized in that: The support assembly includes a positioning block (13) fixedly connected to the limit block (12); an inner wall of the box body (8) is provided with a positioning groove (14) slidably connected to the outer side of the positioning block (13); a positioning rod (15) is fixedly connected inside the positioning groove (14); and a limiting spring (16) is sleeved on the outer side of the positioning rod (15).
3. The multi-stage mixer suitable for an acetylene cracking furnace according to claim 1, characterized in that: The mixing assembly comprises an expanded diameter section (17) provided on the housing (1), a reduced diameter section (18) provided on the housing (1), and a transition section (19) provided on the connecting pipe (2).
4. The multi-stage mixer suitable for an acetylene cracking furnace according to claim 1, characterized in that: A cylinder (20) is fixedly connected to the interior of the shell (1), and the top and bottom of the cylinder (20) are both conical.
5. The multi-stage mixer suitable for an acetylene cracking furnace according to claim 1, characterized in that: The worm (9) is fixedly connected to a turning handle (4) for easy rotation.
6. The multi-stage mixer suitable for an acetylene cracking furnace according to claim 1, characterized in that: A limiting groove is provided on the mesh plate (7), and the size of the limiting groove is adapted to the size of the limiting block (12).
7. The multi-stage mixer suitable for an acetylene cracking furnace according to claim 2, characterized in that: A sliding through hole is provided inside the positioning block (13), and the inside of the sliding through hole is slidably connected to the outside of the positioning rod (15).