Vertical argon catalytic furnace
By designing the support leg assembly, temperature measuring assembly, and wire mesh assembly of the vertical argon catalytic furnace, the problems of uneven gas distribution, inaccurate temperature monitoring, and reaction rate control in the catalytic reaction were solved, achieving uniform gas distribution and accurate temperature monitoring, thus improving the stability and efficiency of the reaction.
Patent Information
- Application Number
- CN202422964781.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-03
AI Technical Summary
Existing catalytic furnaces lack uniform control of gas distribution, precise temperature monitoring, and regulation of reaction rate during the catalytic reaction process. They are particularly susceptible to interference from oxygen and reactive gases under high temperature and high pressure conditions.
A vertical argon catalytic furnace was designed, comprising a support leg assembly, a temperature measuring assembly, a gas inlet, and a gas outlet. The furnace body is fixed by the support leg assembly, the reaction rate is controlled by the gas inlet, the temperature measuring assembly monitors the temperature, and the wire mesh assembly mitigates airflow and pressure fluctuations, thereby achieving uniform gas distribution and precise temperature control.
It achieves uniform gas distribution, accurate temperature monitoring, and effective control of reaction rate during the catalytic reaction process, reduces the interference of oxygen and reactive gases on the reaction system, and ensures the stability and efficiency of the reaction.
Smart Images
Figure CN223490911U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chemical equipment, and in particular to a vertical argon catalytic furnace. Background Technology
[0002] A catalytic furnace, also known as a contact furnace, is a catalytic reactor. For example, platinum-catalyzed hydroxide oxidation is widely used in the production of chemicals such as nitric acid, hydrogen peroxide, and phenol; iron-iron-aluminum catalysts or zinc-iron-aluminum catalysts are commonly used in the industrial production of ammonia synthesis.
[0003] Ziegler-Natta catalysts are used in the production of polyethylene and polypropylene, while Marcheta catalysts are used in the production of polyethylene terephthalate (PET). Hydrogenation reactions reduce unsaturated compounds to saturated compounds through the catalysis of hydrogenation catalysts, such as the hydrogenation of alkenes to prepare alkanes and the hydrogenation of fatty acids to prepare fatty alcohols.
[0004] During catalytic reactions, it is necessary to fix the catalyst and mitigate the impact of gas flow and pressure fluctuations on the catalyst to ensure uniform gas distribution. In some reactions, inert gases are required to occupy space in the reaction system. When catalytic reactions require high temperature and high pressure, inert gases can occupy space in the reaction system to reduce the interference of oxygen and other active gases on the reaction system. At the same time, it is necessary to precisely control the temperature and reaction rate in the catalytic furnace. As a result, there is a lack of such catalytic furnaces on the market. Utility Model Content
[0005] To address the aforementioned problems, the purpose of this invention is to provide a vertical argon catalytic furnace with a reasonable structure, controlled reaction rate, accurate temperature monitoring, and uniform gas distribution.
[0006] According to one aspect of this utility model, a vertical argon catalytic furnace is provided, comprising: a furnace body, a support leg assembly, a temperature measuring assembly, a gas inlet, a gas outlet, and a feeding port. The feeding port is vertically installed on the top of the furnace body, coaxially aligned with and connected to the furnace body. A gas inlet is located on the feeding port, with its axial direction perpendicular to the feeding port's axial direction. A gas outlet is vertically installed on the bottom of the furnace body. A first wire mesh assembly and a second wire mesh assembly are installed on the upper part of the furnace body's inner wall. A temperature measuring assembly is positioned between the first and second wire mesh assemblies, extending into the furnace body. The support leg assembly is fixedly installed at the bottom of the furnace body. The support leg assembly facilitates vertical fixation of the entire furnace body. The gas inlet allows for the addition of argon gas during the reaction process to control the reaction rate and minimize interference from oxygen and other reactive gases. The temperature measuring assembly facilitates the detection of different temperatures during the reaction within the furnace.
[0007] In some embodiments, the furnace body includes a cylindrical body, an upper end cap, and a lower end cap. One end of the cylindrical body is fixedly connected to the upper end cap, and the other end of the cylindrical body is fixedly connected to the lower end cap. A feeding port is fixedly installed on the upper end cap, and a gas outlet is fixedly installed on the lower end cap. Separately machining and welding the cylindrical body, upper end cap, and lower end cap facilitates the machining of the furnace body.
[0008] In some embodiments, a first lifting lug is fixedly installed at the joint between the cylinder and the upper end cap, and a second lifting lug is fixedly installed at the joint between the cylinder and the lower end cap. A saddle is fixedly installed on the outer wall of the cylinder. The first and second lifting lugs facilitate the movement of the furnace body, and the saddle facilitates the laying down of the furnace body for transportation.
[0009] In some embodiments, the temperature measuring assembly includes a first temperature measuring section and a second temperature measuring section. The first temperature measuring section is disposed on the side closer to the first wire mesh assembly, and the second temperature measuring section is disposed on the side closer to the second wire mesh assembly. The first and second temperature measuring sections evenly divide the area between the first and second wire mesh assemblies into three parts. By evenly distributing the first and second temperature measuring sections between the first and second wire mesh assemblies, it is possible to accurately monitor the temperature at various locations within the reaction vessel during reaction.
[0010] In some embodiments, the first temperature measuring unit includes: a first platinum resistance thermometer sleeve, a first screw plug, and a first temperature sensor. The first platinum resistance thermometer sleeve is arranged perpendicular to the axial direction of the cylinder. The first platinum resistance thermometer sleeve extends at least one-quarter of the diameter of the cylinder. The first temperature sensor is placed inside the first platinum resistance thermometer sleeve. The first screw plug seals the end of the first platinum resistance thermometer sleeve.
[0011] The second temperature measuring unit includes: a second platinum resistance thermometer sleeve, a second plug, and a second temperature sensor. The second platinum resistance thermometer sleeve is arranged perpendicular to the axis of the cylinder. The second platinum resistance thermometer sleeve extends at least one-quarter of the cylinder's diameter. The second temperature sensor is placed inside the second platinum resistance thermometer sleeve. The second plug seals the end of the second platinum resistance thermometer sleeve. Extending the first and second platinum resistance thermometer sleeves into the cylinder at least one-quarter of its depth facilitates monitoring the temperature at the center of the cylinder.
[0012] In some embodiments, the first wire mesh assembly includes a first wire mesh and steel wires, the first wire mesh being fixedly connected to the inner wall of the cylinder, and the steel wires being supported on the inner wall of the first wire mesh. The first wire mesh facilitates the mitigation of the impact of airflow and pressure fluctuations on the catalyst.
[0013] In some embodiments, the second wire mesh assembly includes: a grid, a perforated plate, a second wire mesh, and a pressure ring. The grid is fixed to the bottom of the cylinder, and the perforated plate and the second wire mesh are sequentially arranged on the grid from bottom to top. The pressure ring presses down on the top of the second wire mesh and defines its position. The second wire mesh not only mitigates the impact of airflow and pressure fluctuations on the catalyst but also fixes the reactants.
[0014] In some embodiments, the feed port includes: a first connecting pipe, a first flange, a first sealing element, a first flange cover, and a handle. The first connecting pipe is connected to the top of the upper end cap, and the first flange is fixedly installed at the end of the first connecting pipe. The first flange cover is fixedly connected to the first flange by bolts. A first sealing element is provided between the first flange and the first flange cover, and a handle is provided on the outside of the first flange cover.
[0015] In some embodiments, the gas inlet includes: a second pipe, a second flange, a second seal, and a second flange cover. The second pipe is disposed on the first pipe, and the axial direction of the second pipe is perpendicular to the axial direction of the first pipe. The second flange is fixedly disposed at the end of the second pipe. The second flange cover is fixedly connected to the second flange by bolts. A second seal is disposed between the second flange and the second flange cover.
[0016] In some embodiments, the gas outlet includes: a third pipe, a third flange, a third seal, and a third flange cover. The third pipe is connected to the bottom of the lower head, and the third flange is fixedly installed at the end of the third pipe. The third flange cover is fixedly connected to the third flange by bolts, and a third seal is provided between the third flange and the third flange cover.
[0017] This invention offers several advantages: a rational structure, effective reaction rate control, precise temperature monitoring, and uniform gas distribution. The supporting leg assembly facilitates vertical fixation of the entire furnace body. The gas inlet allows for the addition of argon gas during the reaction to control the reaction rate and minimize interference from oxygen and other reactive gases. The temperature measuring component facilitates the detection of different temperatures within the furnace during the reaction. Separate processing and welding of the cylinder, upper end cap, and lower end cap facilitates the fabrication of the furnace body. The first and second lifting lugs facilitate furnace movement, and the saddle allows for easy tilting and transport. The even distribution of the first and second temperature measuring units between the first and second wire mesh components enables precise temperature monitoring at various locations within the cylinder during the reaction. The first and second platinum resistance thermometers extend at least one-quarter of the way into the cylinder, facilitating temperature monitoring at the center of the cylinder. The first wire mesh mitigates the impact of airflow and pressure fluctuations on the catalyst, while the second wire mesh not only mitigates the impact of airflow and pressure fluctuations on the catalyst but also secures the reactants. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of a vertical argon catalytic furnace according to the present invention;
[0019] Figure 2 This is a top view of a vertical argon catalytic furnace according to the present invention;
[0020] Figure 3 This is a schematic diagram of the temperature measuring component of a vertical argon catalytic furnace according to the present invention.
[0021] Figure 4 This is a schematic diagram of the structure of the first wire mesh assembly of a vertical argon catalytic furnace according to this utility model;
[0022] Figure 5 This is a schematic diagram of the structure of the second wire mesh assembly of a vertical argon catalytic furnace according to this utility model. Detailed Implementation
[0023] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent transformations or substitutions in function, method or structure made by those skilled in the art based on these embodiments are all within the protection scope of the present invention.
[0024] In the description of this utility model, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components. They can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the terms according to the specific circumstances.
[0025] like Figure 1 and Figure 2 As shown, the vertical argon catalytic furnace of this utility model includes: a furnace body 1, a support leg assembly 2, a temperature measuring assembly 3, a gas inlet 4, a gas outlet 5, and a feeding port 6. The feeding port 6 is vertically installed on the top of the furnace body 1, coaxially connected to and communicating with the furnace body 1. The gas inlet 4 is located on the feeding port 6, with its axis perpendicular to the axis of the feeding port 6. The gas outlet 5 is vertically installed on the bottom of the furnace body 1. A first wire mesh assembly 7 and a second wire mesh assembly 8 are installed on the upper part of the inner wall of the furnace body 1. The temperature measuring assembly 3 is located between the first wire mesh assembly 7 and the second wire mesh assembly 8, extending into the furnace body 1. The support leg assembly 2 is fixedly installed at the bottom of the furnace body 1. The support leg assembly 2 facilitates the vertical fixation of the entire furnace body 1. The gas inlet 4 facilitates the addition of argon gas during the reaction to control the reaction rate and minimize interference from oxygen and other reactive gases. The temperature measuring assembly 3 facilitates the detection of different temperatures within the furnace body 1 during the reaction.
[0026] The furnace body 1 includes a cylindrical body 11, an upper end cap 12, and a lower end cap 13. One end of the cylindrical body 11 is fixedly connected to the upper end cap 12, and the other end of the cylindrical body 11 is fixedly connected to the lower end cap 13. A feeding port 6 is fixedly installed on the upper end cap 12, and a gas outlet 5 is fixedly installed on the lower end cap 13. The processing of the furnace body 1 is facilitated by separately processing and welding the cylindrical body 11, the upper end cap 12, and the lower end cap 13. During the processing, the whole plate is rolled into a barrel to form the cylindrical body 11. The upper end cap 12 and the lower end cap 13 are processed, and holes are opened in the center of the upper end cap 12 and the lower end cap 13, respectively, and a first connecting pipe 61 and a second connecting pipe 41 are welded on. The lower end cap 13 is first welded to the bottom of the cylindrical body 11. The second wire mesh assembly 8 and the first wire mesh assembly 7 are fixed sequentially from the top of the cylindrical body 11. Finally, the upper end cap 12 is welded to the top of the cylindrical body 11. It should be noted that: This utility model uses arc welding. For manual welding, the welding rod grade is S30408, and the welding wire grade is A102; for automatic welding, the welding wire grade is ER107; and for stainless steel and carbon steel, the welding wire grade is A302. The interior is oil-free. During the hydrostatic test, the chloride ion content in the water should be strictly controlled to ≤25mg / L. After passing the test, the internal water stains should be immediately dried with dry gas, and then all pipe openings should be sealed with a cover.
[0027] The working pressure of this utility model is 1.0MPa, the design pressure is 1.1MPa, the working temperature is 220℃, and the design temperature is 450℃.
[0028] A first lifting lug 14 is fixedly installed at the joint between the cylinder 11 and the upper end cap 12, and a second lifting lug 15 is fixedly installed at the joint between the cylinder 11 and the lower end cap 13. A saddle 16 is fixedly installed on the outer wall of the cylinder 11. The first lifting lug 14 and the second lifting lug 15 facilitate the movement of the furnace body 1, and the saddle 16 facilitates the laying down of the furnace body 1 for transportation.
[0029] like Figure 3 As shown, the temperature measuring component 3 includes a first temperature measuring part 31 and a second temperature measuring part 32. The first temperature measuring part 31 is disposed on the side close to the first wire mesh assembly 7, and the second temperature measuring part 32 is disposed on the side close to the second wire mesh assembly 8. The first temperature measuring part 31 and the second temperature measuring part 32 evenly divide the area between the first wire mesh assembly 7 and the second wire mesh assembly 8 into three parts. By evenly distributing the first temperature measuring part 31 and the second temperature measuring part 32 between the first wire mesh assembly 7 and the second wire mesh assembly 8, it is possible to accurately monitor the temperature at various locations within the reaction cylinder 11.
[0030] The first temperature measuring unit 31 includes: a first platinum resistance thermometer sleeve 311, a first screw plug 312 and a first temperature sensor 313. The first platinum resistance thermometer sleeve is arranged perpendicular to the axis of the cylinder 11. The first platinum resistance thermometer sleeve 311 extends into at least one-quarter of the diameter of the cylinder 11. The first temperature sensor 313 is placed inside the first platinum resistance thermometer sleeve 311. The first screw plug 312 seals the end of the first platinum resistance thermometer sleeve 311.
[0031] The second temperature measuring unit 32 includes: a second platinum resistance thermometer sleeve 321, a second screw plug 322, and a second temperature sensor 323. The second platinum resistance thermometer sleeve is arranged perpendicular to the axial direction of the cylinder 11. The second platinum resistance thermometer sleeve 321 extends at least one-quarter of the diameter of the cylinder 11. The second temperature sensor 323 is placed inside the second platinum resistance thermometer sleeve 321. The second screw plug 322 seals the end of the second platinum resistance thermometer sleeve 321. Extending the first platinum resistance thermometer sleeve 311 and the second platinum resistance thermometer sleeve 321 into at least one-quarter of the cylinder 11 facilitates monitoring the temperature at the center of the cylinder 11.
[0032] like Figure 4 As shown, the first wire mesh assembly 7 includes a first wire mesh 71 and a steel wire 72. The first wire mesh 71 is fixedly connected to the inner wall of the cylinder 11, and the steel wire 72 is supported on the inner wall of the first wire mesh 71. The first wire mesh 71 helps to mitigate the impact of airflow and pressure fluctuations on the catalyst. During processing, the steel wire 72 presses the first wire mesh 71 tightly and welds it to the cylinder wall.
[0033] like Figure 5 As shown, the second wire mesh assembly 8 includes: a grid 81, a perforated plate 82, a second wire mesh 83, and a pressure ring 84. The grid 81 is fixed to a support ring 85 at the bottom of the cylinder 11. The perforated plate 82 and the second wire mesh 83 are arranged sequentially from bottom to top on the grid 81. The pressure ring 84 presses down on the top of the second wire mesh 83 and defines its position. The second wire mesh 83 not only reduces the impact of airflow and pressure fluctuations on the catalyst but also fixes the reactants. The pressure ring 84 is tightly welded to the inner wall of the cylinder 11 and presses the wire mesh 83 onto the perforated plate 82 without any gaps. The support ring 85 is welded to the bottom of the inner wall of the cylinder 11 and supports the grid 81, the perforated plate 82, the second wire mesh 83, and the pressure ring 84.
[0034] The feed port 6 includes: a first connecting pipe 61, a first flange 62, a first sealing element 63, a first flange cover 64, and a handle 65. The first connecting pipe 61 is connected to the top of the upper end cap 12. The first flange 62 is fixedly installed at the end of the first connecting pipe 61. The first flange cover 64 is fixedly connected to the first flange 62 by bolts. The first sealing element 63 is provided between the first flange 62 and the first flange cover 64. The handle 65 is provided on the outside of the first flange cover 64.
[0035] Gas inlet 4 includes: a second pipe 41, a second flange 42, a second seal 43, and a second flange cover 44. The second pipe 41 is disposed on the first pipe 61, and the axial direction of the second pipe 41 is perpendicular to the axial direction of the first pipe 61. The second flange 42 is fixedly disposed at the end of the second pipe 41. The second flange cover 44 is fixedly connected to the second flange 42 by bolts. The second seal 43 is disposed between the second flange 42 and the second flange cover 44.
[0036] Gas outlet 5 includes: a third pipe 51, a third flange 52, a third seal 53 and a third flange cover 54. The third pipe 51 is connected to the bottom of the lower head 13. The third flange 52 is fixedly installed at the end of the third pipe 51. The third flange cover 54 is fixedly connected to the third flange 52 by bolts. The third seal 53 is provided between the third flange 52 and the third flange cover 54.
[0037] During operation, the first connecting pipe 61, the second connecting pipe 41, and the third connecting pipe 51 are all connected to the internal space of the furnace body 1. Generally: the second flange cover 44 is removed, the second flange 42 is connected to the argon gas source, the third flange cover 54 closes the third connecting pipe 51, the first flange cover 64 is removed, and material is fed into the furnace body 1 through the first connecting pipe 61 for reaction. Simultaneously, the argon gas source is turned on according to the monitoring structure to control the reaction rate. The second flange cover 44 and the third flange cover 54 can also be adapter structures, connecting to the gas source and gas storage device.
[0038] The above descriptions are merely some embodiments of this utility model. It should be noted that those skilled in the art can make other modifications and improvements without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.
Claims
1. A vertical argon catalytic furnace, characterized in that, include: The furnace includes a furnace body, support leg assembly, temperature measuring assembly, gas inlet, gas outlet, and feeding port. The feeding port is vertically installed on the top of the furnace body, coaxially connected to and communicating with the furnace body. A gas inlet is located on the feeding port, with its axis perpendicular to the axis of the feeding port. A gas outlet is vertically installed on the bottom of the furnace body. A first wire mesh assembly and a second wire mesh assembly are installed on the upper part of the inner wall of the furnace body. A temperature measuring assembly is located between the first and second wire mesh assemblies, extending into the furnace body. The support leg assembly is fixedly installed at the bottom of the furnace body.
2. A vertical argon catalytic furnace according to claim 1, characterized in that, The furnace body includes: a cylinder, an upper end cap, and a lower end cap. One end of the cylinder is fixedly connected to the upper end cap, and the other end of the cylinder is fixedly connected to the lower end cap. A feeding port is fixedly installed on the upper end cap, and a gas outlet is fixedly installed on the lower end cap.
3. A vertical argon catalytic furnace according to claim 2, characterized in that, A first lifting lug is fixedly installed at the joint between the cylinder and the upper end cap, a second lifting lug is fixedly installed at the joint between the cylinder and the lower end cap, and a saddle is fixedly installed on the outer wall of the cylinder.
4. A vertical argon catalytic furnace according to claim 3, characterized in that, The temperature measuring component includes a first temperature measuring part and a second temperature measuring part. The first temperature measuring part is disposed on the side close to the first wire mesh assembly, and the second temperature measuring part is disposed on the side close to the second wire mesh assembly. The first temperature measuring part and the second temperature measuring part evenly divide the area between the first wire mesh assembly and the second wire mesh assembly into three parts.
5. A vertical argon catalytic furnace according to claim 4, characterized in that, The first temperature measuring unit includes: a first platinum resistance thermometer sleeve, a first screw plug, and a first temperature sensor. The first platinum resistance thermometer sleeve is arranged perpendicular to the axial direction of the cylinder. The first platinum resistance thermometer sleeve extends at least one-quarter of the diameter of the cylinder. The first temperature sensor is placed inside the first platinum resistance thermometer sleeve. The first screw plug seals the end of the first platinum resistance thermometer sleeve. The second temperature measuring unit includes: a second platinum resistance thermometer sleeve, a second screw plug, and a second temperature sensor. The second platinum resistance thermometer sleeve is arranged perpendicular to the axial direction of the cylinder. The second platinum resistance thermometer sleeve extends at least one-quarter of the diameter of the cylinder. The second temperature sensor is placed inside the second platinum resistance thermometer sleeve. The second screw plug seals the end of the second platinum resistance thermometer sleeve.
6. A vertical argon catalytic furnace according to claim 5, characterized in that, The first wire mesh assembly includes a first wire mesh and a steel wire, wherein the first wire mesh is fixedly connected to the inner wall of the cylinder, and the steel wire is supported on the inner wall of the first wire mesh.
7. A vertical argon catalytic furnace according to claim 6, characterized in that, The second wire mesh assembly includes: a grid, a perforated plate, a second wire mesh, and a pressure ring. The grid is fixed to the bottom of the cylinder. The perforated plate and the second wire mesh are arranged sequentially from bottom to top on the grid. The pressure ring presses down on the top of the second wire mesh and defines the position of the second wire mesh.
8. A vertical argon catalytic furnace according to claim 7, characterized in that, The feed port includes: a first connecting pipe, a first flange, a first sealing element, a first flange cover, and a handle. The first connecting pipe is connected to the top of the upper end cap, and the first flange is fixedly installed at the end of the first connecting pipe. The first flange cover is fixedly connected to the first flange by bolts. A first sealing element is provided between the first flange and the first flange cover, and a handle is provided on the outside of the first flange cover.
9. A vertical argon catalytic furnace according to claim 7, characterized in that, The gas inlet includes: a second pipe, a second flange, a second seal, and a second flange cover. The second pipe is disposed on the first pipe, and the axis of the second pipe is perpendicular to the axis of the first pipe. The second flange is fixedly disposed at the end of the second pipe. The second flange cover is fixedly connected to the second flange by bolts. A second seal is disposed between the second flange and the second flange cover.
10. A vertical argon catalytic furnace according to claim 7, characterized in that, The gas outlet includes: a third pipe, a third flange, a third seal, and a third flange cover. The third pipe is connected to the bottom of the lower head, and the third flange is fixedly installed at the end of the third pipe. The third flange cover is fixedly connected to the third flange by bolts, and a third seal is provided between the third flange and the third flange cover.