Ammonia separator for synthesis tower outlet gas
By designing an ammonia separator for the exit gas of the synthesis tower, the problems of hydrogen and impurity particles in the accumulation and discharge of the inert gas are solved, and the continuous separation and recovery of the inert gas is achieved, and the operation load and resource consumption are reduced.
Patent Information
- Application Number
- CN202422025503.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-08-20
AI Technical Summary
In the alcoholization process of existing ammonia synthesis devices, the accumulation of inert gases such as methane inhibits the synthesis reaction, and hydrogen and impurity particles are present in the emitted gases, resulting in an increase in the operating load of the separation module and cannot be effectively recycled.
An ammonia separator for the outlet gas of the synthetic tower is designed, including two sets of separation chambers, upper and lower separation cylinders, conveying pipe groups, recycling pipe groups and filter components in the housing. Through non-stop switching and replacement operations, continuous separation and recovery of inert gas is achieved, and impurity particles are removed through the filter assembly, extending the operating life of the separation assembly.
The continuous separation and recovery of inert gas is achieved, the working load of the separation components is reduced, the working life of the separation components is extended, the resources are saved, and the consumption is reduced.
Smart Images
Figure CN222998543U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of synthetic ammonia production, in particular to an ammonia separator for the gas at the outlet of a synthesis tower. Background Art
[0002] In synthetic ammonia production, the alcohol hydrocarbonization process means that in the production process of synthetic ammonia, it is mainly used to produce ammonia gas. Ammonia is one of the inorganic chemical products with the largest production in the world and has a wide range of applications in many fields such as agriculture, industry, and pharmaceuticals.
[0003] The process of synthetic ammonia needs to be prepared through an ammonia synthesis device. The ammonia synthesis device obtains high-purity nitrogen through air separation technology or extraction from natural gas. At the same time, hydrogen is obtained through methods such as steam methane reforming or coal gasification.
[0004] In the existing synthetic ammonia device using the alcohol hydrocarbonization process, inert gases such as methane in the synthesis system will continuously accumulate. Inert gases will inhibit the synthesis reaction. Therefore, it is necessary to control inert gases such as methane within a certain index range. During synthesis, this index is controlled by continuous discharge. However, there will still be a certain amount of hydrogen in the discharged inert gases, which cannot be effectively recycled. And when discharging, there are impurity particles in the gas, resulting in an increased operating load of the subsequent separation components.
[0005] Therefore, this application proposes an ammonia separator for the gas at the outlet of a synthesis tower. Summary of the Utility Model
[0006] Aiming at the deficiencies of the prior art, the utility model provides an ammonia separator for the gas at the outlet of a synthesis tower, which solves the problems mentioned in the background art.
[0007] To achieve the above objectives, the utility model is realized through the following technical solutions:
[0008] The ammonia separator for the outlet gas of the synthesis tower includes a shell. Inside the shell, two separation chambers are respectively arranged. In the two separation chambers, an upper separation cylinder and a lower separation cylinder are respectively and fixedly installed. A membrane separation component is assembled inside the upper separation cylinder and the lower separation cylinder. A conveying pipe group is jointly butted and installed at the tops of the upper separation cylinder and the lower separation cylinder. A recovery pipe group is jointly butted and installed at the bottoms of the upper separation cylinder and the lower separation cylinder. A filter component is butted and installed at the bottom inside the shell, and the filter component is respectively installed and communicated with the upper separation cylinder and the lower separation cylinder; the filter component includes a gas filtering part, a first air guide pipe, and a second air guide pipe. The gas filtering part is butted and installed at the bottom inside, the top of the gas filtering part is butted and installed with the first air guide pipe, and the first air guide pipe is installed and connected with the upper separation cylinder. One side of the gas filtering part is butted and installed with the second air guide pipe, and the second air guide pipe is installed and connected with the lower separation cylinder; when the gas filtering part guides gas to the lower separation cylinder through the second air guide pipe, the first air guide pipe stops guiding gas; when the gas filtering part guides gas to the upper separation cylinder through the first air guide pipe, the second air guide pipe stops guiding gas.
[0009] Further, a base is fixedly installed at the bottom of the shell, and an assembly hole is provided on the base. A protective door is movably installed on the front of the shell.
[0010] Further, the conveying pipe group includes a conveying main pipe, a first conveying branch pipe, a second conveying branch pipe, a first one-way air outlet valve, and a first docking head. The tops of the upper separation cylinder and the lower separation cylinder are respectively butted and installed with the first conveying branch pipe and the second conveying branch pipe, and the first conveying branch pipe and the second conveying branch pipe extend out of the shell. The ends of the first conveying branch pipe and the second conveying branch pipe are butted and installed with the first one-way air outlet valve. The first conveying branch pipe and the second conveying branch pipe are jointly butted and installed with the conveying main pipe through the first one-way air outlet valve, and the bottom of the conveying main pipe is butted and installed with the first docking head.
[0011] Further, the filter component further includes an electric control valve and an air inlet. The bottom of the gas filtering part is butted and installed with the air inlet, and the air inlet penetrates through the shell and the base. Electric control valves are fixedly installed on both the second air guide pipe and the first air guide pipe.
[0012] Further, the gas filtering part includes a first filter mesh cover, a second filter mesh cover, and a gas guide cylinder. The gas guide cylinder is butted and installed at the bottom inside the shell. The first filter mesh cover and the second filter mesh cover are respectively butted and installed at the bottom inside the gas guide cylinder, and the first filter mesh cover is sleeved on the second filter mesh cover.
[0013] Further, the recovery pipe group includes a first recovery pipe, a second recovery pipe, a second docking head, and a second outlet check valve. The bottom parts of the upper separation cylinder and the lower separation cylinder are respectively docked and installed with the first recovery pipe and the second recovery pipe, and the first recovery pipe and the second recovery pipe extend out of the housing. The first recovery pipe and the second recovery pipe are docked and communicated. The end of the second recovery pipe is docked and installed with the second docking head, and the second outlet check valve is docked and installed on the first recovery pipe and the second recovery pipe.
[0014] Further, the membrane separation assembly includes a gas guide rod, a separation membrane group, and a separation cylinder. The separation cylinder is fixedly installed inside the upper separation cylinder and the lower separation cylinder. The gas guide rod is docked and installed inside the separation cylinder. The gas guide rods inside the upper separation cylinder and the lower separation cylinder are respectively installed and connected with the first recovery pipe and the second recovery pipe. The separation membrane group is sleeved on the gas guide rod inside the separation cylinder.
[0015] The utility model provides an ammonia separator for the gas at the outlet of a synthesis tower. Compared with the prior art, it has the following beneficial effects:
[0016] 1. Through the assembly combination between the upper separation cylinder, the lower separation cylinder, the conveying pipe group, and the recovery pipe group, the separator realizes non-stop switching and replacement operations. In this way, it can not only ensure the continuous separation and recovery of inert gas by the separation component, and when one set of separation components is operating, the other set waits. When replacement is needed, it can be switched to the other set for separation operation, and the former can wait for personnel to replace, without the need for personnel to stay for a long time, ensuring the operation performance of the separator;
[0017] 2. Through the filter component, the inert gas entering the separator can be quickly filtered first, realizing the filtration and removal of impurity particles in the inert gas. In this way, it can not only ensure the separation effect of the subsequent separation component, but also extend the operation life of the separation component;
[0018] 3. Through the membrane separation component, the separator realizes the separation and recovery of hydrogen in the gas, thus saving resources and reducing consumption. Description of the Drawings
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0020] Figure 1 Shows the internal assembly state structure diagram of the ammonia separator of the present invention;
[0021] Figure 2Shows the schematic structural diagram of the assembled appearance of the ammonia separator of the present utility model;
[0022] Figure 3 Shows the schematic structural diagram of the internal assembly state of the membrane separation component of the present utility model;
[0023] Figure 4 Shows the schematic structural diagram of the internal composition of the gas filter component of the present utility model;
[0024] As shown in the figure: 1. Shell; 11. Separation chamber; 12. Protection door; 2. Delivery pipe group; 21. Main delivery pipe; 22. First delivery branch pipe; 23. Second delivery branch pipe; 24. First outlet check valve; 25. First adapter; 3. Filter component; 31. Gas filter component; 311. First filter mesh cover; 312. Second filter mesh cover; 313. Air guide cylinder; 32. First air guide pipe; 33. Second air guide pipe; 34. Electric control valve; 35. Inlet; 4. Upper separation cylinder; 5. Lower separation cylinder; 6. Recovery pipe group; 61. First recovery pipe; 62. Second recovery pipe; 63. Second adapter; 64. Second outlet check valve; 7. Base; 8. Membrane separation component; 81. Air guide rod; 82. Separation membrane group; 83. Separation cylinder. Detailed implementation manners
[0025] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model are described clearly and completely. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0026] Embodiment 1
[0027] To solve the technical problems in the background art, the following ammonia separator for the gas at the outlet of the synthesis tower is provided:
[0028] Combined with Figures 1-4 As shown, the ammonia separator for the gas at the outlet of the synthesis tower provided by the present utility model includes a shell 1. Two separation chambers 11 are respectively arranged inside the shell 1. An upper separation cylinder 4 and a lower separation cylinder 5 are respectively fixedly installed in the two separation chambers 11. A membrane separation component 8 is assembled inside the upper separation cylinder 4 and the lower separation cylinder 5. A delivery pipe group 2 is jointly butted and installed at the tops of the upper separation cylinder 4 and the lower separation cylinder 5. A recovery pipe group 6 is jointly butted and installed at the bottoms of the upper separation cylinder 4 and the lower separation cylinder 5. A filter component 3 is butted and installed at the bottom inside the shell 1, and the filter component 3 is respectively installed and communicated with the upper separation cylinder 4 and the lower separation cylinder 5;
[0029] During this period, by setting two sets of separation chambers 11, the separator can achieve the simultaneous loading and installation of the upper separation cylinder 4 and the lower separation cylinder 5. Through the assembly and combination of the upper separation cylinder 4, the lower separation cylinder 5, the conveying pipe group 2, and the recovery pipe group 6, the separator realizes the non-stop switching and replacement operations. In this way, it can not only ensure the continuous separation and recovery of inert gas by the separation components, but also when one set of separation components is operating, the other set waits. When replacement is needed, it can be switched to the other set for separation operations. The former can then wait for personnel to replace it, without the need for personnel to stay on site for a long time, ensuring the operating performance of the separator. Through the filter component 3, the inert gas entering the separator can be quickly filtered first, removing the impurity particles in the inert gas. In this way, it can not only ensure the separation effect of the subsequent separation components, but also extend the operating life of the separation components.
[0030] The filter component 3 includes a gas filtering member 31, a first gas guide pipe 32, and a second gas guide pipe 33. The gas filtering member 31 is butt-joint installed at the bottom inside 1. The first gas guide pipe 32 is butt-joint installed at the top of the gas filtering member 31, and the first gas guide pipe 32 is installed and connected to the upper separation cylinder 4. A second gas guide pipe 33 is butt-joint installed on one side of the gas filtering member 31, and the second gas guide pipe 33 is installed and connected to the lower separation cylinder 5. When the gas filtering member 31 guides gas to the lower separation cylinder 5 through the second gas guide pipe 33, the first gas guide pipe 32 stops guiding gas. When the gas filtering member 31 guides gas to the upper separation cylinder 4 through the first gas guide pipe 32, the second gas guide pipe 33 stops guiding gas.
[0031] During the production of synthetic ammonia, the generated inert gas will first be filtered through the gas filtering member 31, and then be respectively introduced into the upper separation cylinder 4 and the lower separation cylinder 5 through the first gas guide pipe 32 and the second gas guide pipe 33 for separation operations. During this period, if gas is guided to the upper separation cylinder 4 through the first gas guide pipe 32, the second gas guide pipe 33 will stop guiding gas to the lower separation cylinder 5. At this time, the lower separation cylinder 5 is in a waiting state, and there are two waiting factors. One is that the lower separation cylinder 5 has been saturated with separation and waits for personnel to replace it. The other is that the upper separation cylinder 4 is in an operating state, and the lower separation cylinder 5 will enter the operating state only after waiting for the upper separation cylinder 4 to finish.
[0032] Embodiment 2
[0033] As Figure 1 and Figure 4 shown, on the basis of the above embodiment, this embodiment further gives the following content:
[0034] In this embodiment, a base 7 is fixedly installed at the bottom of the housing 1, and an assembly hole is provided on the base 7. A protective door 12 is movably installed on the front of the housing 1.
[0035] During this period, personnel can replace and maintain the components inside the housing 1 by opening and closing the protective door 12; when installing the separator, personnel can dock and install the base 7 with the discharge port to ensure that the waste gas can enter the housing 1.
[0036] In this embodiment, the filter assembly 3 further includes an electromagnetic control valve 34 and an air inlet 35. The bottom of the air filtering component 31 is docked and installed with the air inlet 35, and the air inlet 35 penetrates through the housing 1 and the base 7. Electromagnetic control valves 34 are fixedly installed on both the second air duct 33 and the first air duct 32.
[0037] During this period, the air inlet 35 needs to ensure docking with the waste gas discharge port;
[0038] After the waste gas is filtered, personnel need to close the electromagnetic control valve 34 on one of the air ducts;
[0039] When the first air duct 32 conducts air, the electromagnetic control valve 34 on the second air duct 33 realizes the required switching operation.
[0040] The air filtering component 31 includes a first filter mesh cover 311, a second filter mesh cover 312, and an air guide cylinder 313. The air guide cylinder 313 is docked and installed at the bottom inside the housing 1. The first filter mesh cover 311 and the second filter mesh cover 312 are respectively docked and installed at the bottom inside the air guide cylinder 313, and the first filter mesh cover 311 is sleeved on the second filter mesh cover 312.
[0041] By combining the above content, when the air filtering component 31 operates, it is filtered through the first filter mesh cover 311 and the second filter mesh cover 312 inside the air guide cylinder 313 to achieve preliminary separation of particulate impurities;
[0042] It should be noted that the pore diameter of the mesh of the first filter mesh cover 311 is smaller than that of the second filter mesh cover 312.
[0043] Embodiment Three
[0044] As Figures 1-4 shown, on the basis of the above embodiment, this embodiment further gives the following content:
[0045] In this embodiment, the conveying pipe group 2 includes a main conveying pipe 21, a first conveying branch pipe 22, a second conveying branch pipe 23, a first one-way air outlet valve 24, and a first connector 25. The top parts of the upper separation cylinder 4 and the lower separation cylinder 5 are respectively connected and installed with the first conveying branch pipe 22 and the second conveying branch pipe 23, and the first conveying branch pipe 22 and the second conveying branch pipe 23 extend out of the housing 1. The ends of the first conveying branch pipe 22 and the second conveying branch pipe 23 are connected and installed with the first one-way air outlet valve 24. The first conveying branch pipe 22 and the second conveying branch pipe 23 are jointly connected and installed with the main conveying pipe 21 through the first one-way air outlet valve 24, and the bottom of the main conveying pipe 21 is connected and installed with the first connector 25.
[0046] During this period, useless gases such as methane separated by the separation component will be guided through the first conveying branch pipe 22 and the second conveying branch pipe 23 to the waste furnace for combustion.
[0047] And when the first conveying branch pipe 22 and the second conveying branch pipe 23 cooperate with the corresponding separation components, each will be restricted by the one-way air outlet valve to prevent the backflow of waste gas, ensuring that the waste gas can be sent into the pipeline for unified discharge.
[0048] In this embodiment, the recovery pipe group 6 includes a first recovery pipe 61, a second recovery pipe 62, a second connector 63, and a second one-way air outlet valve 64. The bottom parts of the upper separation cylinder 4 and the lower separation cylinder 5 are respectively connected and installed with the first recovery pipe 61 and the second recovery pipe 62, and the first recovery pipe 61 and the second recovery pipe 62 extend out of the housing 1. The first recovery pipe 61 and the second recovery pipe 62 are connected and communicated. The end of the second recovery pipe 62 is connected and installed with the second connector 63, and the first recovery pipe 61 and the second recovery pipe 62 are connected and installed with the second one-way air outlet valve 64 at the upper connection.
[0049] During this period, after the gas is separated by the separation component, the useful component hydrogen will be introduced into the corresponding first recovery pipe 61 and second recovery pipe 62 respectively, and the hydrogen will be discharged and recovered through the recovery pipe.
[0050] During the recovery period, in order to prevent the separated hydrogen from flowing back, it will be restricted and cooperated through the one-way air outlet valve.
[0051] In this embodiment, the membrane separation component 8 includes a gas guiding rod 81, a separation membrane group 82, and a separation cylinder 83. The separation cylinder 83 is fixedly installed inside the upper separation cylinder 4 and the lower separation cylinder 5. The gas guiding rod 81 is connected and installed inside the separation cylinder 83. The gas guiding rods 81 in the upper separation cylinder 4 and the lower separation cylinder 5 are respectively installed and connected with the first recovery pipe 61 and the second recovery pipe 62, and the separation membrane group 82 is sleeved on the gas guiding rod 81 inside the separation cylinder 83.
[0052] During this period, the incoming exhaust gas will enter the interior of the separation cylinder 83, and hydrogen will be separated through the separation membrane module 82 and introduced into the recovery pipe through the gas guide rod 81, while the exhaust gas will be introduced to the end through the separation membrane module 82.
[0053] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the said element.
[0054] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; 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 for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.
Claims
1. Ammonia separator for synthesis tower outlet gas, characterized by: It comprises a shell, wherein two groups of separation chambers are respectively arranged inside the shell, wherein an upper separation cylinder and a lower separation cylinder are respectively fixedly installed in the two groups of separation chambers, and a membrane separation assembly is installed inside the upper separation cylinder and the lower separation cylinder, a conveying pipe assembly is commonly butted against the top of the upper separation cylinder and the lower separation cylinder, a recovery pipe assembly is commonly butted against the bottom of the upper separation cylinder and the lower separation cylinder, a filter assembly is butt-mounted against the bottom of the shell, and the filter assembly is respectively installed and communicated with the upper separation cylinder and the lower separation cylinder; The filter assembly includes an air filter component, a first air guide pipe, and a second air guide pipe, wherein the air filter component is docked and installed at the bottom, the first air guide pipe is docked and installed at the top of the air filter component, and the first air guide pipe is installed and connected to the upper separation cylinder, and the second air guide pipe is docked and installed at one side of the air filter component, and the second air guide pipe is installed and connected to the lower separation cylinder; when the air filter component guides air to the lower separation cylinder through the second air guide pipe, the first air guide pipe stops guiding air; when the air filter component guides air to the upper separation cylinder through the first air guide pipe, the second air guide pipe stops guiding air.
2. The ammonia separator for synthesis tower outlet gas according to claim 1, characterized in that: A base is fixedly installed at the bottom of the shell, and an assembly hole is arranged on the base, and a protective door is movably installed on the front of the shell.
3. The ammonia separator for synthesis tower outlet gas according to claim 2, characterized in that: The delivery pipe group includes a delivery main pipe, a first delivery branch pipe, a second delivery branch pipe, a first air outlet one-way valve, and a first joint. The first delivery branch pipe and the second delivery branch pipe are respectively butt-jointed with the top of the upper separation cylinder and the lower separation cylinder, and the first delivery branch pipe and the second delivery branch pipe extend out of the shell. The first delivery branch pipe and the second delivery branch pipe are butt-jointed with the first air outlet one-way valve at the ends. The first delivery branch pipe and the second delivery branch pipe are jointly butt-jointed with the delivery main pipe through the first air outlet one-way valve, and the first joint is butt-jointed with the bottom of the delivery main pipe.
4. The ammonia separator for synthesis tower outlet gas according to claim 3, characterized in that: The filter assembly also includes an electric control valve and an air inlet. The bottom of the air filter component is docked with the air inlet, and the air inlet runs through the shell and the base. The second air duct and the first air duct are both fixedly installed with an electric control valve.
5. The ammonia separator for synthesis tower outlet gas according to claim 4, characterized in that: The air filter component includes a first filter screen cover, a second filter screen cover, and an air guide cylinder. The bottom of the shell is docked with the air guide cylinder, and the bottom of the air guide cylinder is docked with the first filter screen cover and the second filter screen cover, and the first filter screen cover is mounted on the second filter screen cover.
6. The ammonia separator for synthesis tower outlet gas according to claim 5, characterized in that: The recovery pipe group includes a first recovery pipe, a second recovery pipe, a second joint, and a second air outlet one-way valve. The first recovery pipe and the second recovery pipe are respectively butt-connected and installed at the bottom of the upper separation tube and the lower separation tube, and the first recovery pipe and the second recovery pipe extend out of the shell. The first recovery pipe is butt-connected and connected to the second recovery pipe, and a second joint is butt-connected and installed at the end of the second recovery pipe. The second air outlet one-way valve is butt-connected and installed on the first recovery pipe and the second recovery pipe.
7. The ammonia separator for synthesis tower outlet gas according to claim 6, characterized in that: The membrane separation assembly includes an air guide rod, a separation membrane group, and a separation cylinder. The separation cylinders are fixedly installed inside the upper separation cylinder and the lower separation cylinder, and the air guide rods are dockedly installed inside the separation cylinders. The air guide rods in the upper separation cylinder and the lower separation cylinder are respectively installed and connected to the first recovery pipe and the second recovery pipe, and the separation membrane group is mounted on the air guide rods in the separation cylinders.