Nitrogen energy-saving preparation device based on membrane separation
By introducing a multi-stage filtration and recycling purification mechanism into the nitrogen preparation device, the problem of high energy consumption in existing devices has been solved, and efficient nitrogen preparation and resource recycling have been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN YUNFEILONG SPECIAL GAS CO LTD
- Filing Date
- 2025-09-19
- Publication Date
- 2026-06-23
AI Technical Summary
Existing membrane separation-based nitrogen energy-saving preparation devices have high power consumption, making it impossible to conduct in-depth troubleshooting and resulting in the equipment being unable to operate for extended periods.
A filtration and purification mechanism is introduced into the nitrogen preparation device, including a vacuum pump, filter tube, microfiltration membrane, ultrafiltration membrane, adsorption tower and carbon molecular sieve. Through multi-stage filtration and circulation purification, the purity and efficiency of nitrogen are improved and energy consumption is reduced.
Through multi-stage filtration and circulating purification, energy consumption is significantly reduced, equipment operating time is extended, and the purity and resource utilization rate of nitrogen are improved.
Smart Images
Figure CN224388426U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to nitrogen preparation related technical field especially, it is a kind of nitrogen energy-saving preparation device based on membrane separation. BACKGROUND
[0002] Nitrogen is a kind of colorless, odorless, nontoxic inert gas, content is abundant in nature, its chemical property is stable, this makes it in multiple fields all have important application, the inertness of nitrogen makes it can isolate oxygen, prevent material oxidation, combustion or metamorphic, in metal processing, such as welding, annealing, quenching process, nitrogen can avoid metal being oxidized, guarantee processing quality, nitrogen is important raw material of synthetic ammonia, nitric acid and other chemical products, through Haber method, nitrogen and hydrogen gas react to generate ammonia under high temperature and high pressure, ammonia can be further used to manufacture chemical fertilizer, explosive, etc., in chemical experiment, many reactions need to be carried out in inert environment, nitrogen can be used as protective gas, prevent reactant and oxygen, carbon dioxide etc. in air from reacting.
[0003] But the existing nitrogen preparation device, most of a kind of nitrogen energy-saving preparation device based on membrane separation, its power consumption is higher, nitrogen cannot be further checked, the energy consumption of preparing nitrogen is higher, so that the equipment cannot work for a long time. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a kind of nitrogen energy-saving preparation device based on membrane separation to solve the problems that the existing nitrogen preparation device in the above background art, most of a kind of nitrogen energy-saving preparation device based on membrane separation, its power consumption is higher, nitrogen cannot be further checked, the energy consumption of preparing nitrogen is higher, so that the equipment cannot work for a long time.
[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of nitrogen energy-saving preparation device based on membrane separation, including gas storage tank shell, the outside of the gas storage tank shell is provided with filter mechanism, the outside of the gas storage tank shell is provided with purification mechanism;
[0006] The filter mechanism includes air suction pump, first filter tube, microfiltration filter membrane, air compressor, second filter tube, ultrafiltration filter membrane and buffer gas storage tank, the outside of the gas storage tank shell is installed and is provided with air suction pump, the side surface of the air suction pump is installed with first filter tube, the inside of the first filter tube is installed and is provided with microfiltration filter membrane, the side of the first filter tube is fixedly connected with air compressor, the side surface of the air compressor is installed with second filter tube, the inside of the second filter tube is installed and is provided with ultrafiltration filter membrane, the side of the second filter tube is connected with buffer gas storage tank.
[0007] Preferably, the purification mechanism includes a gas supply pipe, a reflux pipe, an adsorption tower, a carbon molecular sieve, an exhaust port, and an exhaust pipe. A gas supply pipe is connected to one side of the buffer gas storage tank, a reflux pipe is connected to one side of the gas supply pipe, an adsorption tower is fixedly connected to one side of the reflux pipe, the adsorption tower is filled with carbon molecular sieves, an exhaust port is provided on the outer wall of the reflux pipe, and an exhaust pipe is installed on the outside of the reflux pipe.
[0008] Preferably, one side of the first filter tube is connected to an air pump, and the other side of the first filter tube is fixedly connected to an air compressor.
[0009] Preferably, one side of the second filter tube is connected to an air compressor, and the other side of the second filter tube is fixedly connected to a buffer air tank.
[0010] Preferably, the microfiltration membranes are distributed at equal intervals inside the first filter tube, and the ultrafiltration membranes are distributed at equal intervals inside the second filter tube.
[0011] Preferably, the adsorption tower is provided in two sets, and the reflux pipe is connected to the two sets of adsorption towers.
[0012] Preferably, the carbon molecular sieve is provided in two sets, and the carbon molecular sieve is distributed inside the two sets of adsorption towers respectively.
[0013] Compared with the prior art, the beneficial effects of this utility model are: This nitrogen energy-saving preparation device based on membrane separation adds a filter membrane in the air transport pipeline to perform the first filtration of the air, and after the air is compressed, a filter tube is set with a finer filter membrane inside to perform a deeper filtration of the air, and an adsorption tower is added to purify the nitrogen. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall appearance and structure of the present utility model;
[0015] Figure 2 This is a schematic diagram of the structure of the air compressor and buffer air tank used in conjunction with this utility model;
[0016] Figure 3 This is a schematic diagram of the structure of the first filter tube and the microfiltration membrane of this utility model used together;
[0017] Figure 4 This is a schematic diagram of the structure of the reflux pipe and the adsorption tower used in conjunction with this utility model;
[0018] Figure 5 This is a schematic diagram of the structure of the carbon molecular sieve of this utility model used in conjunction with an exhaust pipe.
[0019] In the diagram: 1. Gas storage tank outer shell; 2. Filtration mechanism; 21. Air pump; 22. First filter tube; 23. Microfiltration membrane; 24. Air compressor; 25. Second filter tube; 26. Ultrafiltration membrane; 27. Buffer gas storage tank; 3. Purification mechanism; 31. Gas delivery pipe; 32. Return pipe; 33. Adsorption tower; 34. Carbon molecular sieve; 35. Exhaust port; 36. Exhaust pipe. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Please see Figures 1-5 This utility model provides a technical solution: a nitrogen energy-saving preparation device based on membrane separation, including a gas storage tank shell 1, a filter mechanism 2 and a purification mechanism 3 arranged on the outside of the gas storage tank shell 1.
[0022] The filtration mechanism 2 includes an air pump 21, a first filter tube 22, a microfiltration membrane 23, an air compressor 24, a second filter tube 25, an ultrafiltration membrane 26, and a buffer air tank 27. The air pump 21 is installed on the outside of the air tank shell 1. The first filter tube 22 is installed on one side of the air pump 21. The microfiltration membrane 23 is installed inside the first filter tube 22. The air compressor 24 is fixedly connected to one side of the first filter tube 22. The second filter tube 25 is installed on one side of the air compressor 24. The second filter tube 25 has an ultrafiltration membrane 26 installed inside it. A buffer gas storage tank 27 is connected to one side of the second filter tube 25. Through the arrangement of the air pump 21, the first filter tube 22, the microfiltration membrane 23, the air compressor 24, the second filter tube 25, the ultrafiltration membrane 26, and the buffer gas storage tank 27, air can be filtered, retaining only nitrogen. To accelerate air extraction, an air pump 21 is installed outside the outer shell of the gas storage tank 1, increasing the air transport efficiency. To improve air transport efficiency, and to filter out particles in the air, the air drawn by the air pump 21 first passes through the first filter tube 22. A microfiltration membrane 23 is installed inside the first filter tube 22 to isolate large particles and remove bacteria, dust, and other particulate matter. After the first filtration, the air is sent to the air compressor 24 for compression. After compression, the air is sent to the second filter tube 25 for a second filtration. An ultrafiltration membrane 26 is installed inside the second filter tube 25 for even finer filtration than the microfiltration membrane 23. After passing through the second filter tube 25, the air enters the buffer storage tank 27. The buffer storage tank 27 increases the system's air capacity, slowing down the rate of pressure drop and allowing the air compressor 24 to run for a longer period, significantly reducing the huge energy consumption caused by frequent compressor starts.
[0023] Furthermore, the purification mechanism 3 includes a gas supply pipe 31, a return pipe 32, an adsorption tower 33, a carbon molecular sieve 34, an exhaust port 35, and an exhaust pipe 36. A gas supply pipe 31 is connected to one side of the buffer storage tank 27, and a return pipe 32 is connected to one side of the gas supply pipe 31. The adsorption tower 33 is fixedly connected to one side of the return pipe 32. The interior of the adsorption tower 33 is filled with carbon molecular sieves 34. An exhaust port 35 is provided on the outer wall of the return pipe 32, and an exhaust pipe 36 is installed on the outside of the return pipe 32. Through the arrangement of the gas supply pipe 31, return pipe 32, adsorption tower 33, carbon molecular sieve 34, exhaust port 35, and exhaust pipe 36, nitrogen is purified and collected. The gas inside the buffer storage tank 27 enters the return pipe 32 installed below the adsorption tower 33 through the gas supply pipe 31, and then flows back to the reflux pipe 36. Pipe 32 carries the gas into the adsorption tower 33, where a carbon molecular sieve 34 is placed. As the gas passes through the adsorption tower 33 and the carbon molecular sieve 34, the moisture in the gas is deeply removed, thus achieving the requirement of extremely low dew point. The carbon molecular sieve 34 removes volatile organic compounds, odors, and oil vapors from the gas. The most unique and crucial feature of the adsorption tower is its cyclic working mode. After the gas passes through the adsorption tower 33 once, it will re-enter the adsorption tower 33 through the return pipe 32 for further filtration and purification, allowing the gas to be recycled, reducing costs, and recovering resources. After the adsorption tower 33 completes the filtration and purification of the gas, it will enter the interior of the gas storage tank shell 1 through the exhaust pipe 36 from the exhaust port 35, thereby collecting nitrogen.
[0024] Furthermore, one side of the first filter tube 22 is connected to the air pump 21, and the other side of the first filter tube 22 is fixedly connected to the air compressor 24. The air pump 21 accelerates the collection of air, and the air compressor 24 compresses the air to provide pure compressed air as raw material to produce nitrogen.
[0025] Furthermore, one side of the second filter tube 25 is connected to the air compressor 24, and the other side of the second filter tube 25 is fixedly connected to the buffer air tank 27. Through the function of the buffer air tank 27, the air capacity of the system is expanded, the huge power loss caused by the air compressor 24 is reduced, the damage caused by pressure is reduced, and the rate of pressure drop is slowed down.
[0026] Furthermore, the microfiltration membranes 23 are evenly distributed inside the first filter tube 22, and the ultrafiltration membranes 26 are evenly distributed inside the second filter tube 25. By setting up the microfiltration membranes 23, the air that has just been drawn into the equipment can be filtered, thereby preventing particles from entering and damaging the equipment.
[0027] Furthermore, the adsorption tower 33 is provided in two sets, and the reflux pipe 32 connects the two sets of adsorption tower 33. Through the setting of the adsorption tower 33, the gas can be deeply filtered and removed, while the nitrogen inside is retained. The nitrogen can be reintroduced into the adsorption tower 33 through the reflux pipe 32 for further purification.
[0028] Furthermore, two sets of carbon molecular sieves 34 are provided, which are distributed inside the two sets of adsorption towers 33 respectively. Through the arrangement of carbon molecular sieves 34, the gas is deeply dehydrated and the volatile organic compounds, odors and oil vapors inside the gas are removed.
[0029] Working Principle: To accelerate air intake, an air pump 21 is installed outside the air tank shell 1, increasing air transport efficiency. To filter out particles in the air, the air first passes through a first filter tube 22 during air pumping. A microfiltration membrane 23 is installed inside the first filter tube 22 to isolate large particles and remove bacteria, dust, and other particulate matter. After the first filtration, the air is sent to the air compressor 24 for compression. After compression, the air is sent to a second filter tube 25 for a second filtration. An ultrafiltration membrane 26 is installed inside the second filter tube 25 for even finer filtration than the microfiltration membrane 23. After passing through the second filter tube 25, the air enters a buffer air tank 27. The buffer air tank 27 increases the system's air capacity, slowing down the pressure drop and allowing the air compressor 24 to operate more efficiently. Over a longer period of time, the significant energy loss caused by frequent starts of the air compressor is greatly reduced. The gas inside the buffer storage tank 27 enters the return pipe 32 installed below the adsorption tower 33 through the gas delivery pipe 31. Then, the return pipe 32 carries the gas into the adsorption tower 33. Inside the adsorption tower 33, a carbon molecular sieve 34 is placed. When the gas passes through the adsorption tower 33 and the carbon molecular sieve 34, the moisture in the gas is deeply removed, thereby achieving the requirement of extremely low dew point. The carbon molecular sieve 34 removes volatile organic compounds, odors, and oil vapors from the gas. The most unique and key feature of the adsorption tower is its cyclic working mode. After the gas passes through the adsorption tower 33 once, it will enter the adsorption tower 33 again through the return pipe 32, thereby undergoing filtration and purification again. This allows the gas to be recycled, reducing costs and recovering resources. After the adsorption tower 33 completes the filtration and purification of the gas, it will enter the interior of the storage tank shell 1 through the exhaust pipe 36 from the exhaust port 35, thereby collecting nitrogen.
[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A nitrogen energy-saving preparation device based on membrane separation, comprising a gas storage tank shell (1), characterized in that: A filtration mechanism (2) is provided on the outside of the gas storage tank shell (1), and a purification mechanism (3) is provided on the outside of the gas storage tank shell (1). The filtration mechanism (2) includes an air pump (21), a first filter tube (22), a microfiltration membrane (23), an air compressor (24), a second filter tube (25), an ultrafiltration membrane (26), and a buffer storage tank (27). The air pump (21) is installed on the outside of the outer shell (1) of the storage tank. The first filter tube (22) is installed on one side of the air pump (21). The microfiltration membrane (23) is installed inside the first filter tube (22). The air compressor (24) is fixedly connected to one side of the first filter tube (22). The second filter tube (25) is installed on one side of the air compressor (24). The ultrafiltration membrane (26) is installed inside the second filter tube (25). The buffer storage tank (27) is connected to one side of the second filter tube (25).
2. The nitrogen energy-saving preparation device based on membrane separation according to claim 1, characterized in that: The purification mechanism (3) includes a gas supply pipe (31), a return pipe (32), an adsorption tower (33), a carbon molecular sieve (34), an exhaust port (35), and an exhaust pipe (36). The gas supply pipe (31) is connected to one side of the buffer gas storage tank (27). The return pipe (32) is connected to one side of the gas supply pipe (31). The adsorption tower (33) is fixedly connected to one side of the return pipe (32). The interior of the adsorption tower (33) is filled with carbon molecular sieve (34). An exhaust port (35) is opened on the outer wall of the return pipe (32). An exhaust pipe (36) is installed on the outside of the return pipe (32).
3. The nitrogen energy-saving preparation device based on membrane separation according to claim 1, characterized in that: One side of the first filter tube (22) is connected to the air pump (21), and the other side of the first filter tube (22) is fixedly connected to the air compressor (24).
4. The nitrogen energy-saving preparation device based on membrane separation according to claim 1, characterized in that: One side of the second filter tube (25) is connected to the air compressor (24), and the other side of the second filter tube (25) is fixedly connected to the buffer air tank (27).
5. The nitrogen energy-saving preparation device based on membrane separation according to claim 1, characterized in that: The microfiltration membrane (23) is distributed at equal intervals inside the first filter tube (22), and the ultrafiltration membrane (26) is distributed at equal intervals inside the second filter tube (25).
6. The nitrogen energy-saving preparation device based on membrane separation according to claim 2, characterized in that: The adsorption tower (33) is provided in two sets, and the reflux pipe (32) connects the two sets of adsorption towers (33).
7. The nitrogen energy-saving preparation device based on membrane separation according to claim 2, characterized in that: Two sets of carbon molecular sieves (34) are provided, and the carbon molecular sieves (34) are respectively distributed inside the two sets of adsorption towers (33).