Metal impurity collection device for ultrapure ammonia production

Abstract

This utility model discloses a metal impurity collection device for ultrapure ammonia production, relating to the technical field of ultrapure ammonia production equipment. It includes a cyclone separator, a precision filter, and a storage tank. The top of the cyclone separator has an outlet pipe, one end of which is fixedly installed with a precision filter. The other end of the precision filter is fixedly installed with a first adsorption tower. A second adsorption tower is located at the other end of the first adsorption tower, and a third adsorption tower is located at the other end of the second adsorption tower. A conveying pipe connects each of the first, second, and third adsorption towers, and valves are installed on the surface of both conveying pipes. This utility model, through pretreatment by the cyclone separator and precision filter, combined with staged adsorption by different adsorbent materials in the first, second, and third adsorption towers, forms a progressive purification process. Compared to traditional distillation methods, it can more thoroughly remove metal impurities, meeting the high purity requirements of ultrapure ammonia in the optoelectronics field.

Description

Technical Field

[0001] This utility model relates to the technical field of ultrapure ammonia production equipment, specifically to a metal impurity collection device for ultrapure ammonia production. Background Technology

[0002] In the production of ultrapure ammonia, metallic impurities in the raw ammonia significantly affect its purity. However, existing methods for removing metallic impurities, such as distillation, are not only ineffective but also waste raw materials and consume high energy. While some adsorption devices can remove some metal ions, they suffer from low adsorption efficiency, easy saturation of adsorption materials, and difficulty in regeneration. With the increasing demands for ultrapure ammonia purity in optoelectronic fields such as liquid crystal displays (LCDs), organic light-emitting diodes (OLEDs), and semiconductor light-emitting devices (LEDs), we propose a metallic impurity collection device for ultrapure ammonia production. Utility Model Content

[0003] In view of the problems existing in the metal impurity collection device for ultrapure ammonia production, this utility model is proposed.

[0004] Therefore, the purpose of this utility model is to provide a metal impurity collection device for ultrapure ammonia production, which solves the problems of common metal impurity removal methods in the prior art, such as distillation, which not only have poor removal effect but also cause raw material waste and high energy consumption. Although some adsorption devices can remove some metal ions, they have problems such as low adsorption efficiency, easy saturation of adsorption materials and difficulty in regeneration. With the continuous improvement of the purity requirements of ultrapure ammonia in optoelectronic fields such as liquid crystal displays (LCD), organic light-emitting diode displays (OLED), and semiconductor light-emitting devices (LED), the problem has been solved.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A metal impurity collection device for ultrapure ammonia production includes a cyclone separator, a precision filter, and a storage tank. The top of the cyclone separator is provided with an outlet pipe. A precision filter is fixedly installed at one end of the outlet pipe. A first adsorption tower is fixedly installed at the other end of the precision filter. A second adsorption tower is provided at the other end of the first adsorption tower. A third adsorption tower is provided at the other end of the second adsorption tower. A conveying pipe is provided between the first, second, and third adsorption towers. Valves are provided on the surface of both conveying pipes. A storage tank is fixedly installed at the top of the second adsorption tower.

[0007] Preferably, the first adsorption tower is filled with a supported nano-metal oxide adsorbent, the second adsorption tower is filled with a composite material of carbon nanotubes and mesoporous molecular sieves, and the third adsorption tower is filled with a strongly acidic cation exchange resin.

[0008] Preferably, the storage tank is provided with connecting pipes on both sides, and the multiple connecting pipes are respectively connected to the top of the first adsorption tower, the second adsorption tower and the third adsorption tower, and the surface of the multiple connecting pipes is provided with a water pump.

[0009] Preferably, the surfaces of the first adsorption tower, the second adsorption tower, and the third adsorption tower are all fitted with electric heating jackets, and a discharge port is provided on one side of the bottom of the first adsorption tower, the second adsorption tower, and the third adsorption tower.

[0010] Preferably, the precision filter has multiple metal screens inside, and the pore size of the multiple metal screens is 0.1-1μm.

[0011] Preferably, the surface of the precision filter is provided with a controller, which is electrically connected to multiple valves, multiple water pumps and multiple electric heating sleeves respectively.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0013] 1. This utility model, through pretreatment by a cyclone separator and a precision filter, combined with the staged adsorption of different adsorption materials in the first, second and third adsorption towers, forms a progressive purification process. Compared with traditional distillation methods, it can remove metal impurities more thoroughly, meeting the high purity requirements of ultrapure ammonia in the optoelectronic field. At the same time, it does not rely on high-energy-consuming distillation processes, reducing raw material waste. Furthermore, the electric heating jacket can regenerate the adsorption materials, extending their service life and reducing replacement costs, thus achieving energy saving and consumption reduction.

[0014] 2. This utility model avoids the problem of low adsorption efficiency of a single adsorption material by using a combination of multiple high-performance adsorption materials. The controller provides centralized control of the device and can flexibly adjust valve opening and closing, water pump operation, etc., according to the actual situation, ensuring the stability and continuity of the adsorption process. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the first, second, and third adsorption towers of this utility model;

[0018] Figure 3This is a schematic diagram of the cross-sectional structure of the precision filter of this utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Cyclone separator; 2. Precision filter; 3. Storage tank; 4. Outlet pipe; 5. First adsorption tower; 6. Second adsorption tower; 7. Third adsorption tower; 8. Conveying pipe; 9. Valve; 10. Supported nano-metal oxide adsorbent; 11. Carbon nanotube and mesoporous molecular sieve composite material; 12. Strongly acidic cation exchange resin; 13. Connecting pipe; 14. Water pump; 15. Electric heating jacket; 16. Discharge port; 17. Metal filter screen; 18. Controller. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0022] This utility model discloses a metal impurity collection device for the production of ultrapure ammonia.

[0023] This utility model provides, for example Figure 1-3 The ultrapure ammonia production metal impurity collection device shown includes a cyclone separator 1, a precision filter 2, and a storage tank 3. The top of the cyclone separator 1 is provided with an outlet pipe 4. One end of the outlet pipe 4 is fixedly installed with the precision filter 2, and the other end of the precision filter 2 is fixedly installed with a first adsorption tower 5. The other end of the first adsorption tower 5 is provided with a second adsorption tower 6, and the other end of the second adsorption tower 6 is provided with a third adsorption tower 7. A conveying pipe 8 is provided between the first adsorption tower 5, the second adsorption tower 6, and the third adsorption tower 7. Valves 9 are provided on the surface of both conveying pipes 8. The top of the second adsorption tower 6 is fixedly installed with a storage tank 3 to facilitate the cleaning of impurities in the pure ammonia.

[0024] This invention relates to a metal impurity collection device for ultrapure ammonia production. The first adsorption tower 5 is filled with a supported nano-metal oxide adsorbent 10, the second adsorption tower 6 is filled with a carbon nanotube and mesoporous molecular sieve composite material 11, and the third adsorption tower 7 is filled with a strong acid cation exchange resin 12. The supported nano-metal oxide adsorbent 10 has a high adsorption capacity for common metal ions such as Fe, Ca, and Mg. The carbon nanotube and mesoporous molecular sieve composite material 11 can not only adsorb metal ions but also remove some moisture. The strong acid cation exchange resin 12 can deeply adsorb residual metal ions.

[0025] The present invention relates to a metal impurity collection device for ultrapure ammonia production. The storage tank 3 is provided with connecting pipes 13 on both sides. Multiple connecting pipes 13 are respectively connected to the top of the first adsorption tower 5, the second adsorption tower 6 and the third adsorption tower 7. The surface of multiple connecting pipes 13 is provided with water pumps 14 to facilitate the use of regenerant to clean the inside of the first adsorption tower 5, the second adsorption tower 6 and the third adsorption tower 7.

[0026] The present invention relates to a metal impurity collection device for ultrapure ammonia production. The surfaces of the first adsorption tower 5, the second adsorption tower 6, and the third adsorption tower 7 are all covered with an electric heating jacket 15. The bottom of the first adsorption tower 5, the second adsorption tower 6, and the third adsorption tower 7 are all provided with a discharge port 16 on one side, so as to desorb the metal impurities adsorbed on the material.

[0027] The present invention relates to a metal impurity collection device for ultrapure ammonia production. The precision filter 2 is provided with multiple metal filter screens 17, the pore size of which is 0.1-1μm, to further remove tiny particulate impurities and reduce the burden on subsequent adsorption units.

[0028] The present invention relates to a metal impurity collection device for ultrapure ammonia production. The surface of the precision filter 2 is provided with a controller 18, which is electrically connected to multiple valves 9, multiple water pumps 14 and multiple electric heating jackets 15, thereby improving the automation level of the device.

[0029] In operation, the raw ammonia first enters the cyclone separator 1, where centrifugal force achieves preliminary separation of larger metal particles. The separated ammonia gas then enters the precision filter 2 through the top outlet pipe 4. Multiple metal filter screens 17 with pore sizes of 0.1-1 μm further intercept tiny particulate impurities. The pretreated ammonia gas then enters the first adsorption tower 5. The supported nano-metal oxide adsorbent 10 in the first adsorption tower 5 efficiently adsorbs common metal ions such as Fe, Ca, and Mg. The treated ammonia gas then enters the second adsorption tower 6 through the conveying pipe 8. The valve 9 on the surface of the conveying pipe 8 controls the gas flow. The carbon nanotube and mesoporous molecular sieve composite material 11 in the second adsorption tower 6 removes some moisture while adsorbing the remaining metal ions. The storage tank 3 is connected to a water pump via a connecting pipe 13. 14 can replenish relevant materials to each adsorption tower. Then, ammonia enters the third adsorption tower 7. The strong acid cation exchange resin 12 in the tower deeply adsorbs the residual metal ions, and finally obtains high-purity ammonia. When the adsorption material needs to be regenerated, the controller 18 starts the electric heating jacket 15 on the surface of the first adsorption tower 5, the second adsorption tower 6 and the third adsorption tower 7 for heating and regeneration. Then, the water pump 14 is started, and the water pump 14 will inject the regenerator dilute hydrochloric acid or nitric acid solution in the storage tank 3 into the first adsorption tower 5, the second adsorption tower 6 and the third adsorption tower 7. The waste liquid inside the first adsorption tower 5, the second adsorption tower 6 and the third adsorption tower 7 is discharged through the discharge port 16 at the bottom. Throughout the process, the controller 18 centrally controls the valve 9, the water pump 14 and the electric heating jacket 15 to ensure the orderly operation of the device.

[0030] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A metal impurity collection device for ultrapure ammonia production, comprising a cyclone separator (1), a precision filter (2), and a storage tank (3), characterized in that, The top of the cyclone separator (1) is provided with an outlet pipe (4). A precision filter (2) is fixedly installed at one end of the outlet pipe (4). A first adsorption tower (5) is fixedly installed at the other end of the precision filter (2). A second adsorption tower (6) is provided at the other end of the first adsorption tower (5). A third adsorption tower (7) is provided at the other end of the second adsorption tower (6). A conveying pipe (8) is provided between the first adsorption tower (5), the second adsorption tower (6), and the third adsorption tower (7). A valve (9) is provided on the surface of both conveying pipes (8). A storage box (3) is fixedly installed on the top of the second adsorption tower (6).

2. The metal impurity trapping device for ultra-pure ammonia production according to claim 1, characterized by, The first adsorption tower (5) is filled with a supported nano-metal oxide adsorbent (10), the second adsorption tower (6) is filled with a carbon nanotube and mesoporous molecular sieve composite material (11), and the third adsorption tower (7) is filled with a strong acid cation exchange resin (12).

3. The metal impurity trapping device for ultra-pure ammonia production according to claim 1, characterized by, The storage tank (3) is provided with connecting pipes (13) on both sides. Multiple connecting pipes (13) are respectively connected to the top of the first adsorption tower (5), the second adsorption tower (6) and the third adsorption tower (7), and water pumps (14) are provided on the surface of multiple connecting pipes (13).

4. The metal impurity trapping device for ultra-pure ammonia production according to claim 1, characterized by, The surfaces of the first adsorption tower (5), the second adsorption tower (6) and the third adsorption tower (7) are all fitted with electric heating jackets (15), and the bottom of the first adsorption tower (5), the second adsorption tower (6) and the third adsorption tower (7) are all provided with discharge ports (16).

5. The metal impurity trapping device for ultra-pure ammonia production according to claim 1, characterized by, The precision filter (2) is provided with multiple metal screens (17) inside, and the pore size of the multiple metal screens (17) is 0.1-1μm.

6. The metal impurity trapping device for ultra-pure ammonia production according to claim 1, characterized by, The surface of the precision filter (2) is provided with a controller (18), which is electrically connected to a plurality of valves (9), a plurality of water pumps (14) and a plurality of electric heating jackets (15).

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