Limiting device for limiting solid phase displacement and reactor
By designing a limiting device including a support ring, a material filtration device, a pressure ring, a pressure plate and a connecting plate, the problem that existing reactors cannot simultaneously limit material displacement and prevent material from being discharged through the outlet with the air flow or water flow, the uniform distribution and density of the material are achieved, saving the volume of the reactor, and purifying the generated gas.
Patent Information
- Application Number
- CN202421957619.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-14
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-08-14
AI Technical Summary
Existing reactors cannot simultaneously limit material displacement and prevent material from being discharged through the outlet with the air or water flow, resulting in uneven reaction processes and untight products.
A limiting device that limits the displacement of the solid phase is designed, including a support ring, a material filtering device, a press ring, a press plate and a connecting plate, through the synergistic action of these components, limits the free expansion of the material and allows the flow of the gas and liquid phases.
The uniform distribution and density of the materials in the reactor are achieved, the volume of the reactor is reduced, and space is saved. At the same time, a small amount of reaction materials in the reaction product is filtered, and the generated gas is purified.
Smart Images
Figure CN222998759U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a limiting technology, in particular to a limiting device for restricting the displacement of solid phase and a reactor. Background Art
[0002] The main function of a limiting device is to limit or restrict the displacement of an object in one or more directions to ensure that it is within a predetermined operating range. The main application fields of limiting devices are very extensive, including mechanical limiting, electrical limiting, hydraulic limiting, etc. As internal components in chemical reactors, the limiting devices are different according to different forms of materials in the reactors. In some special reactors, during the reaction process, it is necessary to limit the displacement of materials and prevent the materials from being discharged through the outlet with air flow or water flow. There is an urgent need to design a limiting device with both functions. Summary of the Utility Model
[0003] The purpose of the utility model is to propose a limiting device for restricting the displacement of solid phase in view of the problem that the existing reactors cannot both restrict the displacement of materials and prevent the materials from being discharged through the outlet with air flow or water flow. On the one hand, this device allows the flow of gas phase and / or liquid phase in the reactor, and on the other hand, it restricts the free expansion of the materials in the reactor to ensure that the reaction materials have a certain density.
[0004] To achieve the above purpose, the technical solution adopted by the utility model is: a limiting device for restricting the displacement of solid phase, which is coaxially arranged above the reaction materials in the reactor, and specifically includes a support ring, a material filtering device, a pressure ring, a pressing plate and a connecting plate. The support ring and the pressure ring are arranged coaxially and parallelly, the outer edges of the support ring and the pressure ring can be slidably matched with the inner wall of the reactor, the pressing plate is fixed in the support ring through the connecting plate, the pressing plate is fixed in the pressure ring through the connecting plate, and the material filtering device is arranged between the support ring and the pressure ring.
[0005] Further, the outer diameter of the support ring = D 内 -1 to D 内 -3 mm, where D 内 is the inner diameter of the reactor. Under the condition of ensuring the sliding of the support ring, the gap between its outer edge and the inner wall of the reactor should be as small as possible to reduce the passage of gas phase through the gap.
[0006] Further, the height of the support ring is 20 - 30 mm, and its strength can support the material filtering device.
[0007] Further, the outer diameter of the pressure ring = D 内 -1 to D 内 -3 mm, where D 内 is the inner diameter of the reactor. Under the condition of ensuring the sliding of the pressure ring, the gap between its outer edge and the inner wall of the reactor should be as small as possible to reduce the passage of gas phase through the gap. The function of the pressure ring is to fix the material filtering device and provide gravity.
[0008] Further, the material filtering device is a wire mesh filtering device, which is a metal film sintered from wire meshes of different meshes. The specific material selection and height of the material filtering device are selected according to the characteristics of the medium in the reactor.
[0009] Further, the outer diameter of the material filtering device = D 内 -1 to D 内 -10 mm, where D 内 is the inner diameter of the reactor.
[0010] Further, when the inner diameter of the reactor ≤ 1200 mm, two pressing plates are symmetrically arranged in the support ring and the pressing ring respectively.
[0011] Further, when the inner diameter of the reactor > 1200 mm, in addition to two symmetrically arranged pressing plates in the support ring and the pressing ring, one pressing plate is respectively arranged in the middle.
[0012] Further, the width of the pressing plate is 50 - 60 mm, and the height is the same as that of the support ring or the pressing ring. The pressing plate is used to fix the material filtering device to ensure that the material filtering device will not be damaged during the upward movement of the material.
[0013] Further, the pressing plate is connected to the connecting plate, the connecting plate is connected to the support ring, and the connecting plate is connected to the pressing ring through fasteners. The fasteners include but are not limited to screws.
[0014] Another object of the present utility model also discloses a reactor for restricting the displacement of solid phase, which includes a vertically arranged cylinder body, and a displacement-limiting device for restricting the displacement of solid phase is coaxially arranged above the reaction material in the cylinder body.
[0015] Further, an air outlet is arranged at the top of the reactor.
[0016] Further, an inlet is arranged at the bottom of the reactor, which is a liquid and / or gas inlet.
[0017] The working principle of the displacement-limiting device for restricting the displacement of solid phase: As Figure 3 shown, in the reactor, the material is evenly distributed at the bottom of the reactor, and a displacement-limiting device for restricting the displacement of solid phase is arranged above the material; As Figure 4 shown, during the reaction process, the material will expand, and the material in the whole reactor moves upward. Due to the gravity of the displacement-limiting device for restricting the displacement of solid phase, there will be resistance when the material expands upward. At the same time, the generated gas and a small amount of material powder will pass through the material filtering device, and a small amount of material powder will stay in the filtering device here, and the gas passes through.
[0018] The limiting device for solid-phase displacement and the reactor of the present utility model can limit the free expansion of materials within a certain space. Specifically, the present utility model has the following advantages compared with the prior art:
[0019] 1) The limiting device for solid-phase displacement of the present utility model restricts the free expansion of materials, making the reaction materials below the limiting device for solid-phase displacement inside the reactor accumulate evenly, and making mass transfer and heat transfer more uniform during the reaction process; at the same time, it reduces the volume of the reactor and saves space.
[0020] 2) The limiting device for solid-phase displacement of the present utility model can filter out a small amount of reaction materials in the reaction product gas, playing a role in purifying the reaction-generated gas.
[0021] 3) The material filtering device of the limiting device for solid-phase displacement of the present utility model is convenient for cleaning and replacement. Description of the Drawings
[0022] Figure 1 is a cross-sectional view of the limiting device for solid-phase displacement;
[0023] Figure 2 is a top view of the limiting device for solid-phase displacement;
[0024] Figure 3 is a schematic diagram of the packing state of the reactor for limiting solid-phase displacement;
[0025] Figure 4 is a schematic diagram of the reaction state of the reactor for limiting solid-phase displacement;
[0026] Figure 5 is a photo of the reaction materials after the reaction. The left figure is the case without the limiting device for solid-phase displacement, and the right figure is the case with the limiting device for solid-phase displacement;
[0027] Figure 6 is a schematic diagram of the gas purging state of the reactor for limiting solid-phase displacement. Detailed Embodiments
[0028] The present utility model is further described below in conjunction with embodiments:
[0029] Embodiment 1
[0030] This embodiment discloses a limiting device for solid-phase displacement. The device is coaxially arranged above the reaction materials inside the reactor, and the reaction materials are solid materials. The specific structure of the limiting device for solid-phase displacement is as shown in Figure 1 and Figure 2As shown in the figure, it includes a support ring 1, a material filtering device 2, a pressure ring 3, a pressing plate 4 and a connecting plate 5. The support ring 1 and the pressure ring 3 are arranged coaxially and parallelly, and the outer edges of the support ring 1 and the pressure ring 3 are in sliding fit with the inner wall of the reactor. A pressing plate 4 is fixed inside the support ring 1 through the connecting plate 5, and a pressing plate 4 is fixed inside the pressure ring 3 through the connecting plate 5. A material filtering device 2 is arranged between the support ring 1 and the pressure ring 3.
[0031] The outer diameter of the support ring 1 = D 内 - 2mm, D 内 is the inner diameter of the reactor. Under the condition of ensuring the free up-and-down sliding of the support ring 1, the gap between its outer edge and the inner wall of the reactor should be as small as possible to reduce the passage of gas phase through the gap. The height of the support ring 1 is 20mm, and its strength can support the material filtering device 2.
[0032] The outer diameter of the pressure ring 3 = D 内 - 2mm, D 内 is the inner diameter of the reactor. Under the condition of ensuring the free up-and-down sliding of the pressure ring 3, the gap between its outer edge and the inner wall of the reactor should be as small as possible to reduce the passage of gas phase through the gap. The function of the pressure ring 3 is to fix the material filtering device 2 and provide gravity.
[0033] The material filtering device 2 is a wire mesh filtering device, a metal film sintered by wire meshes of different mesh numbers. The aperture of the material filtering device 2 should be smaller than the outer diameter of the reaction material. In this embodiment, the reactant in the reactor is magnesium hydride, and the material filtering device 2 selects a stainless steel wire mesh + foam metal filtering device with a height of 50mm. The outer diameter of the material filtering device 2 = 390mm, and the inner diameter D of the reactor 内 = 400mm.
[0034] When the inner diameter of the reactor ≤ 1200mm, two pressing plates 4 are symmetrically arranged inside the support ring 1 and the pressure ring 3 respectively. The width of the pressing plate 4 is 50mm, and the height is the same as the height of the support ring 1 or the pressure ring 3. The pressing plate 4 is used to fix the material filtering device 2 to ensure that the material filtering device 2 will not be damaged during the upward movement of the material. The pressing plate 4 is connected to the connecting plate 5, the connecting plate 5 is connected to the support ring 1, and the connecting plate 5 is connected to the pressure ring 3 through fasteners 6, and the fasteners 6 are screws.
[0035] Embodiment 2
[0036] This embodiment discloses a reactor for restricting solid-phase displacement, as Figure 3-4 shown. The reactor is a vertically arranged cylinder, and the top of the cylinder is connected with an upper cover through a flange. Opening the upper cover can add reaction materials into the reactor and also discharge reaction gases. The middle and lower parts of the cylinder are evenly filled with solid reaction materials. Above the reaction materials in the reactor, a limiting device for restricting solid-phase displacement described in Embodiment 1 is arranged coaxially.
[0037] At the beginning of the reaction, the reaction materials in the reactor react with the external materials. As the reaction proceeds, the volume of the reaction materials will expand, resulting in uneven distribution of the materials in the reactor and uneven distribution of the gas phase space. By setting a limiting device to restrict the solid phase displacement, uniform distribution of the reaction materials is achieved. Figure 5 This is a photo of the reaction materials after the reaction. The left figure shows the situation without the limiting device for restricting the solid phase displacement, and the right figure shows the situation with the limiting device for restricting the solid phase displacement. It can be seen that without the limiting device for restricting the solid phase displacement, the reaction products expand freely, the distribution of the reaction products is uneven, and the materials are relatively loose. With the limiting device for restricting the solid phase displacement, the distribution of the products after the reaction is relatively uniform, the materials are dense, and the occupied space is relatively small.
[0038] Example 3
[0039] This example discloses a reactor for restricting solid phase displacement, as Figure 6 shown. The reactor is a vertically arranged cylinder, and the top of the cylinder is connected with an upper cover through a flange. The upper cover is provided with an air outlet, and the bottom of the cylinder is provided with an inlet. The middle and lower parts of the cylinder are evenly filled with solid reaction materials. Above the reaction materials in the reactor, a limiting device for restricting solid phase displacement as described in Example 1 is arranged coaxially.
[0040] During the working process of the reactor for restricting solid phase displacement in this example, purging with gas is required. The gas enters the reactor through the inlet at the bottom of the cylinder, flows through the reaction materials, converges at the top of the cylinder, and then is discharged from the air outlet. By setting the limiting device for restricting solid phase displacement, it can effectively prevent or reduce the situation that the reaction materials are blown away by the gas and discharged from the air outlet during this process. The limiting device for restricting solid phase displacement allows the flow of the gas phase space in the reactor on the one hand, and restricts the free expansion of the materials in the reactor on the other hand, ensuring a certain density of the reaction products.
[0041] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A limiting device for limiting solid phase displacement, characterized in that: It includes a support ring, a material filtering device, a pressure ring, a pressure plate and a connecting plate. The support ring and the pressure ring are coaxially arranged in parallel, and the outer edges of the support ring and the pressure ring can slide with the inner wall of the reactor. A pressure plate is fixed in the support ring through the connecting plate, and a pressure plate is fixed in the pressure ring through the connecting plate. A material filtering device is arranged between the support ring and the pressure ring.
2. The limiting device for limiting solid phase displacement according to claim 1, characterized in that: The outer diameter of the support ring = D 内 -1~D 内 -3mm, D 内 is the inner diameter of the reactor.
3. The limiting device for limiting solid phase displacement according to claim 1, characterized in that: The outer diameter of the pressing ring = D 内 -1~D 内 -3mm, D 内 is the inner diameter of the reactor.
4. The limiting device for limiting solid phase displacement according to claim 1, characterized in that: The material filtering device is a wire mesh filtering device.
5. The limiting device for limiting solid phase displacement according to claim 1, characterized in that: The outer diameter of the material filtering device = D 内 -1~D 内 -10mm, D 内 is the inner diameter of the reactor.
6. The limiting device for limiting solid phase displacement according to claim 1, characterized in that: When the inner diameter of the reactor is ≤1200 mm, two pressing plates are symmetrically arranged in the support ring and the pressing ring respectively; And / or, when the inner diameter of the reactor is greater than 1200 mm, the support ring and the pressure ring are provided with a pressure plate in the middle in addition to two symmetrically arranged pressure plates.
7. The limiting device for limiting solid phase displacement according to claim 1, characterized in that: The pressing plate and the connecting plate, the connecting plate and the supporting ring, and the connecting plate and the pressing ring are all connected by fasteners.
8. A reactor for limiting solid phase displacement, characterized in that: It comprises a vertically arranged cylinder, wherein a limiting device for limiting solid phase displacement as claimed in any one of claims 1 to 7 is coaxially arranged inside the cylinder and above the reaction material therein.
9. The reactor for limiting solid phase displacement according to claim 8, characterized in that: A gas outlet is arranged on the top of the reactor.
10. The reactor for limiting solid phase displacement according to claim 8, characterized in that: An inlet is arranged at the bottom of the reactor.