A carbon-supported purifier for nitrogen production
By setting a heat source in the catalyst support to ensure the complete reaction between nitrogen and the catalyst, the problem of insufficient nitrogen purity in traditional carbon-backed purifiers is solved, and the preparation of high-purity nitrogen and convenient catalyst replacement are achieved.
Patent Information
- Application Number
- CN202411734645.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2044-11-29
AI Technical Summary
During the nitrogen purification process of traditional carbon-mounted purification machines, since the heater's heater and the catalyst are not arranged at the same location, the oxygen in the nitrogen cannot be completely reacted, and the purity of nitrogen cannot reach ≥99.999%.
A carbon-loaded purification machine for nitrogen production is designed. By setting a heat source in the catalyst support, the downward general nitrogen can be fully reacted at the catalyst position, and when the catalyst needs to be replaced, the old catalyst is conveniently extracted. The catalyst is pumped in to ensure even distribution of the catalyst.
The complete reaction between nitrogen and catalyst was achieved, and the oxygen in nitrogen was completely converted into carbon dioxide, and the purity of nitrogen reached ≥99.999%. At the same time, the replacement of catalysts has become more convenient and efficient.
Smart Images
Figure CN119215657B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to nitrogen making equipment, in particular to a carbon-supported purifier for nitrogen making. Background Art
[0002] As a highly efficient gas purification equipment, the carbon-based purifier has a wide range of application environments. Whether it is the electronics, chemical or pharmaceutical industries, high-purity nitrogen is required to ensure product quality and production safety. In industrial production, equipment is required to continuously and stably provide nitrogen to meet production needs.
[0003] The traditional carbon-based purification machine needs to go through the process of preheating-heating-deoxygenation-heat exchange-water cooling-waste gas removal, which has a cumbersome process and complex structure. It is too wasteful in an environment where the gas consumption is small but continuous. The existing deoxygenation tower directly sets the catalyst in the deoxygenation tower, and uses a heater to heat the entire deoxygenation tower, allowing the catalyst to react with ordinary nitrogen at a certain temperature to generate carbon dioxide, which simplifies the entire deoxygenation step. However, since the hot end of the heater and the catalyst are not located in the same place, it is easy to cause incomplete reaction between nitrogen and catalyst, so that the oxygen in the nitrogen cannot be completely reacted, which reduces the purity of the nitrogen, and the purity of the purified nitrogen cannot reach ≥99.999%.
[0004] Therefore, this case aims to provide a carbon-supported purification machine for nitrogen production, which can set the heat source in the catalyst carrier so that the descending general nitrogen can be fully reacted at the position of the catalyst, and the trace oxygen entrained in the nitrogen can completely react with the carbon in the catalyst to generate carbon dioxide, and when the catalyst needs to be replaced, the catalyst can be more conveniently extracted and a new catalyst can be pumped in, so that the catalyst can be evenly distributed in the deoxygenation tower. Summary of the invention
[0005] The present invention provides a carbon-supported purifier for nitrogen production, which can effectively solve the above problems.
[0006] The present invention is achieved in that:
[0007] A carbon-supported purifier for nitrogen production, comprising a first deoxidation tower for receiving general nitrogen, wherein the first deoxidation tower is connected to a second deoxidation tower and is filled with a catalyst, the second deoxidation tower is connected to a cooler through a pipeline, the cooler connects the first purification tower and the second purification tower, the first purification tower and the second purification tower are connected to a finished nitrogen outlet, and the carbon-supported purifier also includes:
[0008] The middle heating structure comprises a first fixing clamp seat fixed at the middle position of the first deoxidation tower, a second fixing clamp seat is arranged below the first fixing clamp seat, the first fixing clamp seat and the second fixing clamp seat are arranged at an interval and symmetrically with each other, a heating frame is arranged in the interval between the first fixing clamp seat and the second fixing clamp seat, one-way holes are opened on the outer sides of the first fixing clamp seat and the second fixing clamp seat, and the catalyst is arranged on the inner sides of the first fixing clamp seat and the second fixing clamp seat and on the outer side of the heating frame;
[0009] The circulating supply structure comprises a feed guide seat arranged on one side of the heating frame, a heat medium feed pipe communicating with the interior of the heating frame is arranged on the inner side of the feed guide seat, a catalyst supply pipeline communicating with the first fixed clamp seat and the second fixed clamp seat is arranged at the upper end of the heat medium feed pipe, and a catalyst circulation pipe is arranged at the lower end of the other side of the heating frame;
[0010] The circulating material guiding structure comprises a material pocket tray arranged below the heating frame, a plurality of movable material holding cavities are arranged at the bottom of the material pocket tray, a material blocking slope is arranged on the outer side of the middle part of the heating frame, and a rotating component is arranged on one side of the heating frame. When the catalyst enters the gap between the first fixed clamp seat and the second fixed clamp seat through the catalyst supply pipeline and is distributed to the gap between the material pocket tray, the material holding cavity and the material blocking slope, when the catalyst reaches the use cycle, the catalyst on the heating frame is shaken downward by the rotating component, and the used catalyst is extracted through the catalyst circulation pipe.
[0011] As a further improvement, the first fixing clamp seat includes an annular portion fixedly connected to the inner wall of the first deoxidation tower, the inner side of the annular portion is connected to an arched outer convex portion, and the outer sides of the annular portion and the outer convex portion are both provided with one-way holes.
[0012] As a further improvement, the heating rack comprises a transverse axis section arranged on the circulation supply structure, and a plurality of V-shaped contact sections are connected to the outer peripheral surface of the transverse axis section, and the V-shaped contact sections are in communication with the transverse axis section.
[0013] As a further improvement, the material-blocking slope is a plurality of circular protrusions, and the material-blocking slopes are arranged at intervals, and the nitrogen passing through the outer protrusion reacts with the catalyst in the material-blocking slope at the position of the V-shaped contact section.
[0014] As a further improvement, the one-way hole comprises a through hole communicating with the inside and outside of the first fixing clamp seat, and a one-way valve plate is provided on the side of the through hole facing the inside of the first fixing clamp seat.
[0015] As a further improvement, the catalyst circulation pipe includes a side-bend conduit inserted into the side of the second fixing clamp seat, and a lower guide pipe is arranged on the outer side of the side-bend conduit.
[0016] As a further improvement, the material tray is located above the second fixed clamp seat, and the general nitrogen entering through the one-way hole on the annular portion directly reacts with the catalyst in the material tray under the heating of the heating rack.
[0017] As a further improvement, the material holding cavity includes a plurality of conical holes opened on the material pocket tray, an elastic bag is arranged inside the conical hole, and a spring fixedly connected to the second fixing clamp seat is arranged at the bottom of the elastic bag.
[0018] As a further improvement, the rotating assembly includes a driving member connected to the outside of the heating frame, one side of the driving member is provided with an outer sealing sleeve connected to the end of the heating frame, and the inner side of the outer sealing sleeve is provided with a heat medium discharge pipe connected to the heating frame.
[0019] As a further improvement, the driving member includes a fixed gear fixedly connected to the outside of the heating frame, a movable gear is meshed above the fixed gear, and the movable gear is driven by a motor.
[0020] The beneficial effects of the present invention are:
[0021] The existing nitrogen purification directly heats the general nitrogen and the catalyst under high temperature conditions in the equipment, but the hot end of this step is not always in the same place as the catalyst, which leads to incomplete reaction between the general nitrogen and the catalyst, and further leads to the inability to completely remove the oxygen in the general nitrogen. Therefore, the present invention forms a space for loading the catalyst through the first fixed clamp seat and the second fixed clamp seat through an additional middle heating structure, and directly arranges a heating rack between the first fixed clamp seat and the second fixed clamp seat. On the one hand, the catalyst can be evenly distributed between the first fixed clamp seat and the second fixed clamp seat, and can evenly contact the catalyst when the nitrogen is input from the first fixed clamp seat. At the same time, because the catalyst is directly dispersed on the outside of the heating rack, it is exactly at the optimal temperature when the catalyst contacts the nitrogen, so that the complete reaction of the nitrogen and the catalyst can be achieved. At this stage, the oxygen in the nitrogen completely forms carbon dioxide with the carbon in the catalyst, thereby improving the purity of the nitrogen, and the purity of the nitrogen is ≥99.999%.
[0022] The entire first fixing clamp seat and the second fixing clamp seat are not of a regular shape. In order to adapt to the shape of the heating rack and increase the contact area between the heating rack and the nitrogen as much as possible, the first fixing clamp seat of the present invention includes a circular ring portion and an outer convex portion, so that it can have a relatively uniform plane to accommodate the catalyst and an inclined surface to contact the nitrogen in advance. Correspondingly, the catalyst can be held at the inner bottom of the second fixing clamp seat, thereby improving the efficiency and completeness of the overall reaction.
[0023] Traditional heating structures are often spring tube structures or columnar structures, but in fact this arrangement is not only not conducive to contact with the gas, but also not conducive to the attachment of the catalyst thereto. Therefore, the heating rack of the present invention includes a transverse transverse axis section to ensure the heating of the transverse section and the overall heat medium circulation, and a V-shaped contact section is also provided. The annular arrangement of the V-shaped contact section on the transverse axis section not only increases the contact with nitrogen on multiple surfaces, but also the V-shaped contact section can serve as a catalyst bearing surface, so that the catalyst falls on the V-shaped contact section after being blown in, and has more possibilities of contact with nitrogen.
[0024] However, relatively speaking, the entire V-shaped contact section is still relatively smooth, and the catalyst may not be able to stay on the V-shaped contact section. Therefore, the barrier slope of the present invention is a plurality of circular protrusions, forming small partitions, allowing the catalyst to stay between two protrusions, thereby improving the reaction efficiency at this location.
[0025] Since the direction of vacuuming is the same as the direction of nitrogen entry, it is not feasible to set up a one-way valve structure. However, since negative pressure is used when vacuuming, the impact on the one-way structure is not that great compared to the top pressure when nitrogen enters. Therefore, the present invention provides a one-way valve plate on the one-way hole. When positive pressure is applied when nitrogen enters, the one-way valve plate will be opened to allow the gas to flow normally. When the catalyst is extracted by negative pressure, although the one-way valve plate will be partially affected, it will not be fully opened. Even if it is partially opened, it can reduce the gap connecting to the outside, thereby not affecting the extraction of the catalyst.
[0026] The material holding chamber is used to hold the catalyst, but if it is directly set as a solid structure, it is difficult to extract the catalyst particles inside. Therefore, the present invention arranges an elastic bag and a spring inside the material holding chamber. When the catalyst enters, pressure can be applied to the elastic bag and the spring to form temporary storage. When negative pressure suction is generated, it can also be deformed in time to discharge the catalyst in time, completing the circulation of a new catalyst.
[0027] In order to allow the used catalyst on the V-shaped contact section to fall off completely, the present invention arranges a driving member on the outside of the heating frame, which drives the entire heating frame to rotate, and seals the matching gap between the heating frame and the heat medium discharge pipe through a sealing sleeve to prevent heat medium leakage, while not affecting the driving member to drive the heating frame to rotate.
[0028] During the use of the catalyst, after a period of use, the carbon content contained therein will gradually decrease until it contains no carbon at all. Therefore, the catalyst needs to be replaced after a period of use. However, since the catalyst has been installed between the first fixed clamp seat and the second fixed clamp seat, it is relatively difficult to replace the catalyst. Therefore, in this case, a circulating material guiding structure is set up on the basis of the middle heating structure. When the catalyst enters the first fixed clamp seat and the second fixed clamp seat, it will be irregularly distributed on the inner side of the material pocket tray, the material holding cavity, the material blocking slope, and the second fixed clamp seat. After use, the catalyst on the heating rack is thrown down by rotating the assembly, so that all the catalyst falls down to the material pocket tray, the material holding cavity, and the second fixed clamp seat, and then the entire tower body is evacuated through the catalyst circulation pipe to extract all the catalyst, and then the new catalyst is injected into the catalyst through the catalyst supply pipeline to replace the catalyst. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0030] Figure 1 It is a structural schematic diagram of the present invention.
[0031] Figure 2 It is a structural schematic diagram of the first deoxidation tower of the present invention.
[0032] Figure 3 The present invention Figure 2 Top view of the .
[0033] Figure 4 The present invention Figure 3 Section at AA.
[0034] Figure 5 It is a structural schematic diagram of the first fixing clamp seat of the present invention.
[0035] Figure 6 It is a structural schematic diagram of the material pocket tray of the present invention (first viewing angle).
[0036] Figure 7 It is a schematic structural diagram of the material pocket tray of the present invention (second viewing angle).
[0037] Figure 8 It is a structural schematic diagram of the circulating material guiding structure of the present invention (first viewing angle).
[0038] Fig. 9 It is a structural schematic diagram of the circulating material guiding structure of the present invention (second viewing angle).
[0039] In the figure:
[0040] The first deoxidation tower 10, the second deoxidation tower 20, the cooler 30, the first purification tower 40, the second purification tower 50, the first fixing clamp seat 61, the annular portion 611, the outer protrusion 612, the second fixing clamp seat 62, the heating frame 63, the horizontal axis section 631, the V-shaped contact section 632, the one-way hole 64, the feed guide seat 71, the heat medium feed pipe 72, the catalyst supply pipeline 73, the catalyst circulation pipe 74, the side bend guide tube 741, the lower guide tube 742, the material tray 81, the material holding cavity 82, the tapered hole 821, the elastic bag 822, the spring 823, the material blocking slope 83, the rotating assembly 84, the driving part 841, the fixed gear 8411, the moving gear 8412, the motor 8413, the outer sealing sleeve 842, and the heat medium discharge pipe 843. DETAILED DESCRIPTION
[0041] In order to make the embodiments of the present invention, all belong to the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.
[0042] In the description of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as referring to the purpose, technical solutions and advantages of the methods. To be more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work indicate or imply relative importance or implicitly indicate the number of indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0043] Reference Figure 1 to Figure 7As shown, a carbon-loaded purification machine for nitrogen production includes a first deoxidation tower 10 for receiving general nitrogen, the first deoxidation tower 10 is connected to a second deoxidation tower 20 and is filled with a catalyst, the second deoxidation tower 20 is connected to a cooler 30 through a pipeline, the cooler 30 connects a first purification tower 40 and a second purification tower 50, the first purification tower 40 and the second purification tower 50 are connected to a finished nitrogen outlet, the carbon-loaded purification machine also includes: a middle heating structure, including a first fixed heating structure fixed at the middle position of the first deoxidation tower 10 A clamp seat 61, a second fixed clamp seat 62 is arranged below the first fixed clamp seat 61, the first fixed clamp seat 61 and the second fixed clamp seat 62 are arranged at an interval and symmetrically with each other, a heating rack 63 is arranged in the interval between the first fixed clamp seat 61 and the second fixed clamp seat 62, and a one-way hole 64 is opened on the outer side of the first fixed clamp seat 61 and the second fixed clamp seat 62, and the catalyst is arranged on the inner side of the first fixed clamp seat 61 and the second fixed clamp seat 62 and the outer side of the heating rack 63; a circulating supply structure, comprising A feed guide seat 71 is arranged on one side of the heating frame 63, and a heat medium feed pipe 72 is arranged on the inner side of the feed guide seat 71, which is communicated with the inside of the heating frame 63. A catalyst supply pipeline 73 is arranged on the upper end of the heat medium feed pipe 72, which is communicated with the first fixed clamp seat 61 and the second fixed clamp seat 62 at intervals, and a catalyst circulation pipe 74 is arranged on the lower end of the other side of the heating frame 63; a circulating material guiding structure includes a material pocket tray 81 arranged below the heating frame 63, and a plurality of movable material holding cavities are arranged at the bottom of the material pocket tray 81 82, a material blocking slope 83 is arranged on the outer side of the middle part of the heating frame 63, and a rotating component 84 is arranged on one side of the heating frame 63. When the catalyst enters the gap between the first fixed clamp seat 61 and the second fixed clamp seat 62 through the catalyst supply pipeline 73 and is distributed to the gap between the material pocket plate 81, the material holding cavity 82 and the material blocking slope 83, when the catalyst is used for a period of time, the catalyst on the heating frame 63 is shaken downward by the rotating component 84, and the used catalyst is extracted through the catalyst circulation pipe 74.
[0044] In the process of nitrogen purification, the general nitrogen (purity ≥99.9%) produced by the nitrogen production system directly enters the middle heating structure inside the deoxygenation tower and is heated to about 300°C. Under the catalytic action of the catalyst, trace oxygen in the nitrogen reacts with carbon to generate carbon dioxide. After being cooled to a lower temperature by the cooler 30, it is processed by the specially designed first purification tower 40 and the second purification tower 50 (using molecular sieves with strong carbon dioxide adsorption capacity to shorten the operation switching cycle of the adsorption dryer and increase the amount of carbon dioxide adsorption while ensuring nitrogen consumption) to remove carbon dioxide and trace moisture, and then pass through the purity analysis device to obtain high-purity clean nitrogen with a purity ≥99.999%.
[0045] The existing nitrogen purification directly heats the general nitrogen and the catalyst under high temperature conditions in the equipment, but the hot end of this step is not always in the same place as the catalyst, which leads to incomplete reaction between the general nitrogen and the catalyst, and further leads to the inability to completely remove the oxygen in the general nitrogen. Therefore, the present invention forms a space for loading the catalyst through the first fixed clamp seat 61 and the second fixed clamp seat 62 through the additional middle heating structure, and directly sets a heating rack 63 between the first fixed clamp seat 61 and the second fixed clamp seat 62. On the one hand, the catalyst can be evenly distributed between the first fixed clamp seat 61 and the second fixed clamp seat 62, so that the nitrogen can be evenly contacted with the catalyst when it is input from the first fixed clamp seat 61. At the same time, because the catalyst is directly dispersed on the outside of the heating rack 63, it is exactly located at the optimal temperature when the catalyst contacts the nitrogen, so that the complete reaction of the nitrogen and the catalyst can be achieved. At this stage, the oxygen in the nitrogen completely forms carbon dioxide with the carbon in the catalyst, thereby improving the purity of the nitrogen, and the purity of the nitrogen is ≥99.999%.
[0046] The entire first fixing clamp seat 61 and the second fixing clamp seat 62 are not of a regular shape. In order to adapt to the shape of the heating rack 63 and increase the contact area between the heating rack 63 and the nitrogen as much as possible, the first fixing clamp seat 61 of the present embodiment includes a circular portion 611 fixed to the inner wall of the first deoxidation tower 10, and the inner side of the circular portion 611 is connected to an arched outer convex portion 612, and the outer sides of the circular portion 611 and the outer convex portion 612 are both provided with a one-way hole 64, wherein the first fixing clamp seat 61 includes the circular portion 611 and the outer convex portion 612, so that it can have a relatively uniform plane to accommodate the catalyst, and also has an inclined surface to contact the nitrogen in advance, and correspondingly, the catalyst can be held at the inner bottom of the second fixing clamp seat 62, thereby improving the efficiency and completeness of the overall reaction.
[0047] Traditional heating structures are often spring tube structures or columnar structures, but in fact this arrangement is not only not conducive to contact with the gas, but also not conducive to the attachment of the catalyst thereto. Therefore, the heating rack 63 of this embodiment includes a transverse axis section 631 arranged on the circulation supply structure, and a plurality of V-shaped contact sections 632 are connected to the outer peripheral surface of the transverse axis section 631, and the V-shaped contact section 632 is communicated with the transverse axis section 631. The heating rack 63 includes a transverse transverse axis section 631 to ensure the heating of the transverse section and the overall heat medium circulation, and a V-shaped contact section 632 is also arranged. The annular arrangement of the V-shaped contact section 632 on the transverse axis section 631 not only increases the contact with nitrogen on multiple surfaces, but also the V-shaped contact section 632 can serve as a catalyst bearing surface, so that the catalyst falls on the V-shaped contact section 632 after being blown in, and has more contact possibilities with nitrogen. In this embodiment, six groups of V-shaped contact sections 632 are arranged, and can also be arranged in four or five groups, etc.
[0048] However, relatively speaking, the entire V-shaped contact section 632 is still relatively smooth, and the catalyst may not be able to stay on the V-shaped contact section 632. Therefore, in this embodiment, the material blocking slope 83 is a plurality of circular protrusions, and the material blocking slopes 83 are arranged at intervals. The nitrogen through the outer protrusion 612 reacts with the catalyst in the material blocking slope 83 at the position of the V-shaped contact section 632, and small partitions are formed between the material blocking slopes 83, allowing the catalyst to stay between the two protrusions, thereby improving the reaction efficiency at this position. In other embodiments, the material blocking slope 83 can also be a concave structure, which can be directly used to carry catalyst particles and react directly inside.
[0049] Since the direction of vacuuming is the same as the direction of nitrogen entry, it is not feasible to set up a one-way valve structure. However, since negative pressure is used during vacuuming, the impact on the one-way structure is not that great compared to the top pressure applied when nitrogen enters. Therefore, the one-way hole 64 of this embodiment includes a through hole connecting the inside and outside of the first fixed clamp seat 61, and a one-way valve plate is provided on the side of the through hole facing the inside of the first fixed clamp seat 61. By providing a one-way valve plate on the one-way hole 64, when positive pressure is applied when nitrogen enters, the one-way valve plate will be opened to allow the gas to flow normally. When the catalyst is extracted under negative pressure, although the one-way valve plate will be partially affected, it will not be fully opened. Even if it is partially opened, the gap connecting to the outside can be reduced, thereby not affecting the extraction of the catalyst.
[0050] The catalyst circulation pipe 74 is not arranged at the upper end like the catalyst supply pipe 73, but is arranged at the lower end, and is intended to be rotated at a certain angle. Specifically, the catalyst circulation pipe 74 includes a side bend conduit 741 inserted laterally into the second fixed clamp seat 62, and a lower lead pipe 742 is arranged on the outer side of the side bend conduit 741. After the side bend conduit 741 changes direction, the liquid is discharged externally through the lower lead pipe 742.
[0051] During the use of the catalyst, after a period of use, the carbon content contained therein will gradually decrease until it is completely carbon-free. Therefore, the catalyst needs to be replaced after a period of use. However, since the catalyst has been installed between the first fixed clamp seat 61 and the second fixed clamp seat 62, it is relatively difficult to replace the catalyst. Therefore, in this case, a circulating material guiding structure is set up on the basis of the middle heating structure. When the catalyst is introduced into the first fixed clamp seat 61 and the second fixed clamp seat 62, it will be irregularly distributed on the inner side of the material pocket plate 81, the material holding cavity 82, the material blocking slope 83, and the second fixed clamp seat 62. After use, the catalyst on the heating frame 63 is thrown down by the rotating component 84, so that all the catalyst falls down to the material pocket plate 81, the material holding cavity 82, and the second fixed clamp seat 62, and then the entire tower body is evacuated through the catalyst circulation pipe 74 to extract all the catalyst, and then the new catalyst is injected into the catalyst through the catalyst supply pipeline 73 to replace the catalyst.
[0052] Since the entire heating rack 63 needs to rotate, the material tray 81 cannot be directly set on the heating rack 63. Therefore, the material tray 81 of this embodiment is located above the second fixed clamp seat 62, and the general nitrogen entering through the one-way hole 64 on the annular portion 611 directly reacts with the catalyst in the material tray 81 under the heating of the heating rack 63.
[0053] The material holding chamber 82 is used to hold the catalyst, but if it is directly set as a solid structure, it is difficult to extract the catalyst particles inside. Therefore, the material holding chamber 82 of this embodiment includes a plurality of conical holes 821 opened on the material pocket tray 81, and an elastic bag 822 is arranged inside the conical hole 821. The bottom of the elastic bag 822 is provided with a spring 823 fixed to the second fixed clamp seat 62. By arranging the elastic bag 822 and the spring 823 inside the material holding chamber 82, when the catalyst enters, pressure can be applied to the elastic bag 822 and the spring 823 to form temporary storage, and when negative pressure suction is generated, it can also be deformed in time to discharge the catalyst in time, thereby completing the circulation of the new catalyst.
[0054] In order to allow the used catalyst on the V-shaped contact section 632 to completely fall off, the present invention sets a driving member 841 on the outer side of the heating frame 63, and the rotating assembly 84 includes a driving member 841 connected to the outer side of the heating frame 63, and one side of the driving member 841 is provided with an outer sealing sleeve 842 connected to the end of the heating frame 63, and the inner side of the outer sealing sleeve 842 is provided with a heat medium discharge pipe 843 communicated with the heating frame 63. The driving member 841 drives the entire heating frame 63 to rotate, and the sealing sleeve 842 seals the fitting gap between the heating frame 63 and the heat medium discharge pipe 843 to prevent leakage of heat medium, while not affecting the driving member 841 to drive the heating frame 63 to rotate.
[0055] The driving member 841 of this embodiment includes a fixed gear 8411 fixedly connected to the outside of the heating frame 63, and a movable gear 8412 is meshed above the fixed gear 8411. The movable gear 8412 is driven by a motor 8413. The movable gear 8412 is driven to rotate by the external motor 8413, thereby rotating the fixed gear 8411 and the heating frame 63 connected to the fixed gear 8411, thereby achieving a better material replacement effect.
[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A carbon-supported purifier for nitrogen production, characterized in that: The invention comprises a first deoxidation tower (10) for receiving general nitrogen, wherein the first deoxidation tower (10) is connected to a second deoxidation tower (20) and is filled with a catalyst, the second deoxidation tower (20) is connected to a cooler (30) through a pipeline, the cooler (30) is connected to a first purification tower (40) and a second purification tower (50), the first purification tower (40) and the second purification tower (50) are connected to a finished nitrogen outlet, and the carbon-supported purification machine further comprises: A middle heating structure comprises a first fixing clamp seat (61) fixed at the middle position of the first deoxidation tower (10); a second fixing clamp seat (62) is arranged below the first fixing clamp seat (61); the first fixing clamp seat (61) and the second fixing clamp seat (62) are arranged at an interval and symmetrically with each other; a heating frame (63) is arranged in the interval between the first fixing clamp seat (61) and the second fixing clamp seat (62); one-way holes (64) are provided on the outer sides of the first fixing clamp seat (61) and the second fixing clamp seat (62); the catalyst is arranged on the inner sides of the first fixing clamp seat (61), the second fixing clamp seat (62) and the outer side of the heating frame (63); A circulating supply structure, comprising a feed guide seat (71) arranged on one side of a heating frame (63), a heat medium feed pipe (72) communicating with the interior of the heating frame (63) being arranged on the inner side of the feed guide seat (71), a catalyst supply pipeline (73) communicating with the first fixed clamp seat (61) and the second fixed clamp seat (62) being arranged at the upper end of the heat medium feed pipe (72), and a catalyst circulation pipe (74) being arranged at the lower end of the other side of the heating frame (63); The circulating material guiding structure comprises a material collecting tray (81) arranged below a heating frame (63); a plurality of movable material containing cavities (82) are arranged at the bottom of the material collecting tray (81); a material blocking slope (83) is arranged on the outer side of the middle part of the heating frame (63); and a rotating assembly (84) is arranged on one side of the heating frame (63). When the catalyst enters the gap between the first fixed clamp seat (61) and the second fixed clamp seat (62) through a catalyst supply pipeline (73) and is distributed to the gap between the material collecting tray (81), the material containing cavities (82) and the material blocking slope (83), when the catalyst reaches the end of the use cycle, the catalyst on the heating frame (63) is shaken downward by the rotating assembly (84), and the used catalyst is extracted through the catalyst circulation pipe (74).
2. A carbon-supported purifier for nitrogen production according to claim 1, characterized in that: The first fixing clamp seat (61) comprises a circular portion (611) fixedly connected to the inner wall of the first deoxidation tower (10), the inner side of the circular portion (611) is connected to an arched outer convex portion (612), and the outer sides of the circular portion (611) and the outer convex portion (612) are both provided with a one-way hole (64).
3. A carbon-supported purifier for nitrogen production according to claim 2, characterized in that: The heating frame (63) comprises a transverse axis section (631) arranged on a circulation supply structure, a plurality of V-shaped contact sections (632) are connected to the outer peripheral surface of the transverse axis section (631), and the V-shaped contact sections (632) are in communication with the transverse axis section (631).
4. A carbon-supported purifier for nitrogen production according to claim 3, characterized in that: The material blocking slope (83) is a plurality of circular protrusions, and the material blocking slopes (83) are arranged at intervals, and the nitrogen passing through the outer protrusion (612) reacts with the catalyst in the material blocking slope (83) at the position of the V-shaped contact section (632).
5. A carbon-supported purifier for nitrogen production according to claim 1, characterized in that: The one-way hole (64) comprises a through hole communicating with the inside and outside of the first fixing clamp seat (61), and a one-way valve plate is provided on the side of the through hole facing the inside of the first fixing clamp seat (61).
6. A carbon-supported purifier for nitrogen production according to claim 1, characterized in that: The catalyst circulation pipe (74) comprises a side bend conduit (741) inserted into the side of the second fixing clamp seat (62), and a lower guide pipe (742) is arranged on the outer side of the side bend conduit (741).
7. A carbon-supported purifier for nitrogen production according to claim 2, characterized in that: The material tray (81) is located above the second fixed clamp seat (62), and the general nitrogen entering through the one-way hole (64) on the annular portion (611) directly reacts with the catalyst in the material tray (81) under the heating of the heating rack (63).
8. A carbon-supported purifier for nitrogen production according to claim 7, characterized in that: The material holding cavity (82) comprises a plurality of conical holes (821) formed on the material pocket tray (81), an elastic bag (822) being arranged inside the conical holes (821), and a spring (823) fixedly connected to the second fixing clamp seat (62) being arranged at the bottom of the elastic bag (822).
9. A carbon-supported purifier for nitrogen production according to claim 1, characterized in that: The rotating assembly (84) comprises a driving member (841) which is connected to the outside of the heating frame (63); an outer sealing sleeve (842) which is connected to the end of the heating frame (63) is provided on one side of the driving member (841); and a heat medium discharge pipe (843) which is in communication with the heating frame (63) is provided on the inner side of the outer sealing sleeve (842).
10. A carbon-supported purifier for nitrogen production according to claim 9, characterized in that: The driving member (841) comprises a fixed gear (8411) fixedly connected to the outside of the heating frame (63), a movable gear (8412) is meshed above the fixed gear (8411), and the movable gear (8412) is driven by a motor (8413).
Citation Information
Patent Citations
Phosphotungstic acid modified catalyst, preparation method and application in acrolein preparation thereof
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