Adsorption regeneration production process and system and application thereof

Abstract

The application provides an adsorption regeneration production process and system and application thereof. The production process comprises an adsorption process, a pressure reduction process, a heat regeneration process, a product gas purging process and a pressure charging process. The production process is combined by intermediate gas heat regeneration gas and product gas replacement, and combined by pressure change regeneration and temperature change regeneration processes. That is, hot nitrogen is used for regenerating the dehydration adsorbent, high-purity ammonia is used for purging the adsorber after heat regeneration, and near-zero treatment of impurity gas is realized through vacuumizing after purging. The pressure change regeneration process is provided with a vacuumizing process, so as to reduce the content of impurity gas in the system.

Description

Technical Field

[0001] This invention belongs to the field of chemical process technology, specifically relating to an adsorption regeneration production process and system and its application. Background Technology

[0002] In the production process of high-purity ammonia in industrial ammonia production, an adsorption process is typically included to remove some impurities. Because the adsorption process involves a saturated regeneration cycle, regeneration usually involves temperature and pressure variations. The temperature variation process generally introduces a hot carrier gas, and thorough purging ensures complete regeneration of the adsorbent. To avoid introducing new trace impurities during regeneration, high-purity product gas is usually used as the hot carrier gas. However, this results in product consumption during purging, reducing the product yield.

[0003] Currently, there are several different production processes for high-purity ammonia, which can be broadly classified into: complete distillation, filtration-adsorption distillation, and complete filtration-adsorption. Compared to the other two, the complete filtration-adsorption process is relatively simple, but its current product quality is relatively low, and the quality depends heavily on the purifier. The distillation-based process is more complex than the adsorption-based process, requiring control of process parameters to achieve the required product quality, but distillation produces more stable quality. The filtration-adsorption distillation process combines the advantages of both distillation and adsorption, giving it a certain advantage in high-purity ammonia production. However, currently used high-purity ammonia adsorption regeneration processes primarily use purified product gas for regeneration to ensure the system's cleanliness.

[0004] In addition to the process of using product gas as regenerator to regenerate the adsorbent, which is commonly used in high-purity gas production processes, the process of using a third gas (a gas other than raw material gas and product gas) as regenerator is also widely used in other gas purification fields. For example, air purification in air separation units and crude hydrogen purification in liquid nitrogen washing units both use nitrogen as thermal regenerator.

[0005] Existing adsorption regeneration processes include pressure swing regeneration and temperature swing regeneration, equipped with devices such as regeneration heaters and molecular sieve adsorbers, and the adsorption regeneration process is programmed with sequential control. However, the existing technology has the following drawbacks:

[0006] 1) Using product gas as hot regeneration gas results in product consumption during the purging process, reducing product yield;

[0007] 2) Using a third gas as the thermal regeneration gas introduces impurity gases, which increases the difficulty of purifying downstream high-purity gases and makes it difficult to meet the product purity requirements.

[0008] Therefore, there is an urgent need for a high-purity ammonia production process that achieves complete regeneration, introduces no impurities into the process, and improves product yield. Summary of the Invention

[0009] To address the aforementioned problems in the prior art, this invention proposes an adsorption regeneration production process and system, as well as its application. The process of this invention combines intermediate gas thermal regeneration with product gas replacement, and pressure swing regeneration with temperature swing regeneration, achieving complete regeneration without introducing impurities, thus improving product yield and economic efficiency.

[0010] In a first aspect, the present invention proposes an adsorption regeneration production process, which includes an adsorption process, a decompression process, a thermal regeneration process, a product gas purging process, and a pressurization process.

[0011] In a specific embodiment of the present invention, the adsorption process involves the water-containing raw gas entering the adsorber, where the moisture is removed to obtain a high-purity product gas; the water-containing raw gas includes water-containing ammonia.

[0012] In the decompression process, the adsorbent is partially regenerated by decompression, preparing it for the thermal regeneration process.

[0013] In the thermal regeneration process, the regeneration gas is heated and then enters the adsorber to fully regenerate with the adsorbent; the regeneration gas includes nitrogen; nitrogen is chosen as the regeneration gas because impurity gases in nitrogen are easily separated from ammonia.

[0014] The product gas purging process replaces the hot regeneration gas in the adsorber with product gas. The purpose of product gas purging is to reduce the impact of impurities in the regeneration gas on the product gas, and at the same time lower the temperature in the system to provide a temperature environment for the next step of depressurized regeneration.

[0015] The pressure reduction process removes the product gas from the system, reducing the concentration of impurity gases that may exceed the standard due to incomplete purging.

[0016] The pressurization process involves pressurizing the adsorber with product gas, which completes the regeneration process.

[0017] Secondly, the present invention provides an adsorption regeneration production system, which includes a heater, a buffer tank, an adsorber, and a pressure reducing device; the heater is used to heat the regeneration gas.

[0018] The buffer tank is used to store product gas;

[0019] The adsorber is used to adsorb moisture from the water-containing raw gas.

[0020] Pressure reducing equipment is used to release product gases.

[0021] As a specific embodiment of the present invention, temperature control valves are provided at both the inlet and outlet of the heater.

[0022] As a specific embodiment of the present invention, the adsorber includes a first adsorber and a second adsorber.

[0023] In a specific embodiment of the present invention, the adsorber is connected to a water-containing raw material gas pipeline, and a switch valve is provided on the pipeline.

[0024] In a specific embodiment of the present invention, the adsorber is connected to the buffer tank pipeline via a product gas pipeline, and both the inlet and outlet are equipped with switch valves.

[0025] In a specific embodiment of the present invention, the adsorber is connected to the regeneration gas pipeline, and both the inlet and outlet are equipped with switch valves.

[0026] In a specific embodiment of the present invention, the adsorber is connected to a pressure reducing device via a regeneration gas pipeline, the pressure reducing device pipeline is equipped with a switch valve, the regeneration gas pipeline is also equipped with a regeneration gas outlet switch valve, and the product gas pipeline is equipped with a pressure equalization valve.

[0027] Specifically, the specific operation process of the adsorption regeneration production system provided by the present invention includes the following steps:

[0028] S1: Adsorption process, water-containing raw gas enters the adsorber, moisture is removed, and high-purity product gas is obtained; the water-containing raw gas includes water-containing ammonia; the first adsorber adsorption stage, the second adsorber settling stage;

[0029] S2: Decompression process, the adsorbent is partially regenerated by decompression, and the reduced pressure prepares it for the thermal regeneration process; the first adsorber adsorption stage, the second adsorber decompression stage.

[0030] S3: Hot nitrogen regeneration process. Regenerating nitrogen is heated and then enters the adsorber for complete regeneration with the adsorbent; this stage consists of the first adsorber adsorption phase and the second adsorber hot nitrogen regeneration phase.

[0031] S4: High-purity product gas purging process, the purging process replaces the hot regeneration gas in the adsorber with high-purity product gas; the first adsorber adsorption stage, the second adsorber product gas purging stage.

[0032] S5: After purging, a decompression process is carried out to discharge high-purity ammonia gas from the system; the first adsorber adsorption stage, the second adsorber decompression stage; the pressure inside the second adsorber drops to a vacuum state.

[0033] S6: Pressurization process, using high-purity product gas to pressurize the adsorber, regeneration ends; first adsorber adsorption stage, second adsorber pressurization stage;

[0034] S7: After the pressure of the first and second adsorbers is equalized, close the equalization valve; at this time, the same as in step S1, the first adsorber is in the adsorption stage, and the second adsorber is left to stand by.

[0035] Thirdly, the present invention provides the application of the production process described in the first aspect or the production system described in the second aspect in the field of producing high-purity ammonia.

[0036] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0037] 1. The production process of this invention combines intermediate gas thermal regeneration and product gas replacement, as well as pressure-switching regeneration and temperature-switching regeneration processes; that is, hot nitrogen is used to regenerate the dehydration adsorbent, and after thermal regeneration, high-purity ammonia is used to purge the adsorber. After purging, a vacuum method is used to achieve near-zero treatment of impurity gases.

[0038] 2. The production process of this invention includes a vacuum process in the pressure swing regeneration process to reduce the content of impurity gases in the system.

[0039] 3. The production process of this invention can reduce the consumption of high-purity ammonia gas during regeneration, reduce the operating cost of the high-purity ammonia process, and ensure more thorough regeneration, which helps to guarantee the quality of high-purity ammonia gas. Attached Figure Description

[0040] Figure 1 A schematic diagram of the production system and process provided in an embodiment of the present invention;

[0041] The equipment includes 1-first adsorber, 2-second adsorber, 3-heater; 4-pressure reducing device; 5-buffer tank;

[0042] The valves include: 6-Regenerated nitrogen switch valve; 7-High-purity ammonia backflush valve for the first adsorber; 8-High-purity ammonia backflush valve for the second adsorber; 9-Inlet switch valve for ammonia containing water in the first adsorber; 10-Inlet switch valve for ammonia containing water in the second adsorber; 11-Outlet switch valve for high-purity ammonia in the first adsorber; 12-Outlet switch valve for high-purity ammonia in the second adsorber; 13-Regenerated nitrogen inlet switch valve for the first adsorber; 14-Regenerated nitrogen inlet switch valve for the second adsorber; 15-Regenerated nitrogen outlet switch valve for the first adsorber; 16-Regenerated nitrogen outlet switch valve for the second adsorber; 17-Regenerated nitrogen discharge valve; 18-Inlet switch valve for pressure reducing equipment; 19-Equalizing valve; 20-Heater inlet temperature control valve; 21-Heater outlet temperature control valve. Detailed Implementation

[0043] The present invention will be further described below with reference to specific embodiments, but this does not constitute any limitation on the present invention.

[0044] Example 1

[0045] This embodiment provides an adsorption-regeneration production system for producing high-purity ammonia. The feed gas is ammonia containing water, the regeneration gas is nitrogen, and the product gas is high-purity ammonia. Figure 1 The specific structure is as follows:

[0046] The adsorption regeneration production system includes a first adsorber 1, a second adsorber 2, a heater 3, a pressure reducing device 4, and a buffer tank 5;

[0047] The adsorber is used to adsorb moisture from the ammonia gas containing water. The adsorber includes a first adsorber 1 and a second adsorber 2. The two adsorbers are respectively connected to the raw material gas ammonia gas pipeline containing water, and the first adsorber ammonia gas inlet switch valve 9 and the second adsorber ammonia gas inlet switch valve 10 are respectively installed on the two pipelines.

[0048] After the adsorber completes adsorption, the high-purity ammonia product gas is connected to the buffer tank pipeline via the product gas pipeline. The buffer tank is used for storing high-purity ammonia. The product gas is connected to the two adsorber pipelines by a high-purity ammonia outlet switch valve 11 for the first adsorber and a high-purity ammonia outlet switch valve 12 for the second adsorber.

[0049] Another route of high-purity ammonia gas is piped to two adsorbers. In this case, high-purity ammonia gas is used as a purge gas to purge the adsorbers. The product gas backflush pipeline is equipped with a high-purity ammonia backflush valve 7 and a high-purity ammonia backflush valve 8 for the first adsorber. A pressure equalization valve 19 is installed on the high-purity ammonia gas pipeline.

[0050] The heater is used to heat the regenerated nitrogen gas. The heat source is steam, which is introduced into the heater to heat the regenerated nitrogen gas pipeline. The regenerated nitrogen gas pipeline is equipped with a regenerated nitrogen gas on / off valve 6. The heater inlet and outlet are respectively equipped with a heater inlet temperature control valve 20 and a heater outlet temperature control valve 21. The heated regenerated nitrogen gas is connected to the adsorber via the regenerated nitrogen gas pipeline. The regenerated nitrogen gas entering and exiting the adsorber is equipped with a first adsorber regenerated nitrogen gas inlet on / off valve 13, a second adsorber regenerated nitrogen gas inlet on / off valve 14, a first adsorber regenerated nitrogen gas outlet on / off valve 15, and a second adsorber regenerated nitrogen gas outlet on / off valve 16. The regenerated nitrogen gas is also connected to a pipeline via the first adsorber regenerated nitrogen gas outlet on / off valve 15 and the second adsorber regenerated nitrogen gas outlet on / off valve 16 to directly recover the regenerated nitrogen gas without passing through a pressure reducing device, and a regenerated nitrogen gas discharge valve 17 is provided.

[0051] The pressure reducing device is used to regenerate nitrogen and discharge it from the adsorber; the adsorber is connected to the pressure reducing device via a regeneration nitrogen pipeline, and a pressure reducing device inlet switch valve 18 is installed at the inlet of the pressure reducing device.

[0052] Example 2

[0053] This embodiment provides a detailed operation flow of the production system provided in Embodiment 1, combined with... Figure 1 The specific details are as follows:

[0054] S1: Adsorption process, water-containing ammonia gas enters the adsorber, the moisture is removed, and high-purity ammonia gas is obtained; the water-containing raw material gas includes water-containing ammonia gas; the first adsorber 1 is the adsorption stage, and the second adsorber 2 is the settling stage;

[0055] The valve control status is as follows: Regenerated nitrogen switch valve 6 is closed; High-purity ammonia backflush valves 7 and 8 of the first adsorber are closed; Ammonia inlet switch valve 9 of the first adsorber is open; Ammonia inlet switch valve 10 of the second adsorber is closed; High-purity ammonia outlet switch valve 11 of the first adsorber is open; High-purity ammonia outlet switch valve 12 of the second adsorber is closed; Regenerated nitrogen inlet switch valve 13 of the first adsorber is closed; Regenerated nitrogen inlet switch valve 14 of the second adsorber is closed; Regenerated nitrogen outlet switch valve 15 of the first adsorber is closed; Regenerated nitrogen outlet switch valve 16 of the second adsorber is closed; Regenerated nitrogen discharge valve 17 is closed; Pressure reducing equipment inlet switch valve 18 is closed; Pressure equalizing valve 19 is closed; Heater inlet temperature control valve 20 and heater outlet temperature control valve 21 are in automatic mode.

[0056] S2: Decompression process, the adsorbent is partially regenerated by decompression, and the reduced pressure prepares it for the thermal regeneration process; the first adsorber 1 is in the adsorption stage, and the second adsorber 2 is in the decompression stage.

[0057] The valve control status is as follows: Regeneration nitrogen switch valve 6 is closed; High-purity ammonia backflush valves 7 and 8 of the first adsorber are closed; Ammonia inlet switch valve 9 of the first adsorber is open; Ammonia inlet switch valve 10 of the second adsorber is closed; High-purity ammonia outlet switch valve 11 of the first adsorber is open; High-purity ammonia outlet switch valve 12 of the second adsorber is closed; Regeneration nitrogen inlet switch valve 13 of the first adsorber is closed; Regeneration nitrogen inlet switch valve 14 of the second adsorber is closed; Regeneration nitrogen outlet switch valve 15 of the first adsorber is closed; Regeneration nitrogen outlet switch valve 16 of the second adsorber is closed; Regeneration nitrogen discharge valve 17 is opened to reduce pressure in the second adsorber; Pressure reducing equipment inlet switch valve 18 is closed; Pressure equalization valve 19 is closed; Heater inlet temperature control valve 20 and heater outlet temperature control valve 21 are set to automatic operation.

[0058] S3: Hot nitrogen regeneration process, the regenerated nitrogen is heated and then enters the adsorber to fully regenerate with the adsorbent;

[0059] First adsorber 1 adsorption stage, second adsorber 2 hot nitrogen regeneration stage:

[0060] The valve control status is as follows: Regenerated nitrogen switch valve 6 is open; the first adsorber high-purity ammonia backflush valve 7 and 8 are closed; the first adsorber ammonia inlet switch valve 9 is open; the second adsorber ammonia inlet switch valve 10 is closed; the first adsorber high-purity ammonia outlet switch valve 11 is open; the second adsorber high-purity ammonia outlet switch valve 12 is closed; the first adsorber regenerated nitrogen inlet switch valve 13 is closed; the second adsorber regenerated nitrogen inlet switch valve 14 is open; the first adsorber regenerated nitrogen outlet switch valve 15 is closed; the second adsorber regenerated nitrogen outlet switch valve 16 is open; the regenerated nitrogen discharge valve 17 is open; the pressure reducing equipment inlet switch valve 18 is closed; the equalizing valve 19 is closed; the heater inlet temperature control valve 20 and the heater outlet temperature control valve 21 are set to automatic operation.

[0061] S4: High-purity ammonia purging process, in which the thermally regenerated nitrogen in the adsorber is replaced with high-purity ammonia; the first adsorber 1 is in the adsorption stage, and the second adsorber 2 is in the product gas purging stage.

[0062] The valve control status is as follows: Regenerated nitrogen switch valve 6 is closed; the first adsorber high-purity ammonia backflush valve 7 is closed, and the first adsorber high-purity ammonia backflush valve 8 is open; the first adsorber ammonia inlet switch valve 9 is open; the second adsorber ammonia inlet switch valve 10 is closed; the first adsorber high-purity ammonia outlet switch valve 11 is open; the second adsorber high-purity ammonia outlet switch valve 12 is closed; the first adsorber regenerated nitrogen inlet switch valve 13 is closed; the second adsorber regenerated nitrogen inlet switch valve 14 is open; the first adsorber regenerated nitrogen outlet switch valve 15 is closed; the second adsorber regenerated nitrogen outlet switch valve 16 is open; the regenerated nitrogen discharge valve 17 is open; the pressure reducing equipment inlet switch valve 18 is closed; the equalizing valve 19 is closed; the heater inlet temperature control valve 20 and the heater outlet temperature control valve 21 are set to automatic operation.

[0063] S5: After purging, a decompression process is performed to discharge high-purity ammonia gas from the system; the first adsorber 1 is in the adsorption stage, and the second adsorber 2 is in the decompression stage.

[0064] The valve control status is as follows: Regeneration nitrogen switch valve 6 is closed; the high-purity ammonia backflush valve 7 of the first adsorber is closed, and the high-purity ammonia backflush valve 8 of the first adsorber is closed after purging; the water-containing ammonia inlet switch valve 9 of the first adsorber is open; the water-containing ammonia inlet switch valve 10 of the second adsorber is closed; the high-purity ammonia outlet switch valve 11 of the first adsorber is open; the high-purity ammonia outlet switch valve 12 of the second adsorber is closed; the regeneration nitrogen inlet switch valve 13 of the first adsorber is closed; the regeneration nitrogen inlet switch valve 14 of the second adsorber is opened; the regeneration nitrogen outlet switch valve 15 of the first adsorber is closed; the regeneration nitrogen outlet switch valve 16 of the second adsorber is opened; the regeneration nitrogen discharge valve 17 is opened; the pressure reducing equipment inlet switch valve 18 is opened; the pressure equalizing valve 19 is closed; the heater inlet temperature control valve 20 and the heater outlet temperature control valve 21 are put into automatic mode; the pressure inside the second adsorber 2 drops to a vacuum state.

[0065] S6: Pressurization process, high-purity ammonia gas is used to pressurize the adsorber, regeneration ends; adsorption stage of first adsorber 1, pressurization stage of second adsorber 2;

[0066] The valve control status is as follows: Regenerated nitrogen switch valve 6 is closed; High-purity ammonia backflush valve 7 and 8 of the first adsorber are closed; Ammonia inlet switch valve 9 of the first adsorber is open; Ammonia inlet switch valve 10 of the second adsorber is closed; High-purity ammonia outlet switch valve 11 of the first adsorber is open; High-purity ammonia outlet switch valve 12 of the second adsorber is closed; Regenerated nitrogen inlet switch valve 13 of the first adsorber is closed; Regenerated nitrogen inlet switch valve 14 of the second adsorber is closed; Regenerated nitrogen outlet switch valve 15 of the first adsorber is closed; Regenerated nitrogen outlet switch valve 16 of the second adsorber is open; Regenerated nitrogen discharge valve 17 is open; Pressure reducing equipment inlet switch valve 18 is closed; Pressure equalizing valve 19 is open; Heater inlet temperature control valve 20 and heater outlet temperature control valve 21 are set to automatic operation.

[0067] S7: After the pressure of the first adsorber 1 and the second adsorber 2 is equalized, close the pressure equalization valve 19.

[0068] The valve control status is as follows: Regeneration nitrogen switch valve 6 is closed; the high-purity ammonia backflush valve 7 and 8 of the first adsorber are closed; the water-containing ammonia inlet switch valve 9 of the first adsorber is open; the water-containing ammonia inlet switch valve 10 of the second adsorber is closed; the high-purity ammonia outlet switch valve 11 of the first adsorber is open; the high-purity ammonia outlet switch valve 12 of the second adsorber is closed; the regeneration nitrogen inlet switch valve 13 of the first adsorber is closed; the regeneration nitrogen inlet switch valve 14 of the second adsorber is closed; the regeneration nitrogen outlet switch valve 15 of the first adsorber is closed; the regeneration nitrogen outlet switch valve 16 of the second adsorber is opened; the regeneration nitrogen discharge valve 17 is opened; the pressure reducing equipment inlet switch valve 18 is closed; the equalizing valve 19 is closed; the heater inlet temperature control valve 20 and the heater outlet temperature control valve 21 are set to automatic operation. At this time, the status is the same as in step S1, the first adsorber 1 is in the adsorption stage, and the second adsorber 2 is idle and ready for use.

[0069] In summary, the production process of this invention combines intermediate gas thermal regeneration and product gas replacement, as well as pressure swing regeneration and temperature swing regeneration processes. Specifically, hot nitrogen is used to regenerate the dehydrating adsorbent, followed by purging the adsorber with high-purity ammonia. After purging, a vacuum process is then used to achieve near-zero impurity gas treatment. The pressure swing regeneration process includes a vacuum process to reduce the content of impurity gases within the system.

[0070] Any numerical value mentioned in this invention, if there is only a two-unit interval between any minimum and any maximum value, includes all values ​​that increase by one unit each time from the minimum to the maximum value. For example, if the amount of a component, or the value of a process variable such as temperature, pressure, or time, is stated as 50-90, in this specification it means specifically listing values ​​such as 51-89, 52-88… and 69-71 and 70-71, etc. For non-integer values, it may be appropriately considered that a unit is 0.1, 0.01, 0.001, or 0.0001. These are merely some specifically specified examples. In this application, in a similar manner, all possible combinations of numerical values ​​between the listed minimum and maximum values ​​are considered to have been disclosed.

[0071] It should be noted that the embodiments described above are only for explaining the present invention and do not constitute any limitation on the present invention. The present invention has been described with reference to typical embodiments, but it should be understood that the words used therein are descriptive and explanatory terms, not limiting terms. Modifications can be made to the present invention within the scope of the claims, and revisions can be made to the present invention without departing from the scope and spirit of the present invention. Although the present invention described herein relates to specific methods, materials, and embodiments, it does not mean that the present invention is limited to the specific examples disclosed herein; on the contrary, the present invention can be extended to all other methods and applications with the same function.

Claims

1. A process for the production of adsorptive regeneration, characterized in that, The production process comprises: S1: adsorption process, water-containing ammonia gas enters the adsorber, water is removed, and high-purity ammonia gas is obtained; the first adsorber is in an adsorption stage, and the second adsorber is in a static stage; S2: pressure reduction process, the adsorbent is partially regenerated by pressure reduction, and the pressure reduction prepares for the heat regeneration process; the first adsorber is in an adsorption stage, and the second adsorber is in a pressure reduction stage; S3: hot nitrogen regeneration process, the regenerated nitrogen gas enters the adsorber after being heated, and the adsorbent is fully regenerated; the first adsorber is in an adsorption stage, and the second adsorber is in a hot nitrogen regeneration stage; S4: high-purity ammonia gas purging process, the purging process replaces the hot regenerated nitrogen gas in the adsorber with high-purity ammonia gas; the first adsorber is in an adsorption stage, and the second adsorber is in a product gas purging stage; S5: after purging, a vacuumizing process is performed to discharge the high-purity ammonia gas in the system; the first adsorber is in an adsorption stage, and the second adsorber is in a vacuumizing stage; S6: pressure charging process, high-purity ammonia gas is used to charge the adsorber, and the regeneration is completed; the first adsorber is in an adsorption stage, and the second adsorber is in a pressure charging stage; S7: after the pressure of the first adsorber and the second adsorber is equalized, the pressure equalizing valve is closed.

2. The production process according to claim 1, characterized in that, The process is performed in an adsorption regeneration production system, which comprises a heater, a buffer tank, an adsorber, and a pressure reduction device; the heater is used for heating the regenerated gas; the buffer tank is used for storing product gas; the adsorber is used for adsorbing water in the water-containing raw material gas; the pressure reduction device is used for discharging product gas.

3. The production process according to claim 2, characterized in that, The heater inlet and outlet are provided with temperature control valves.

4. The production process according to claim 2, characterized in that, The adsorber comprises a first adsorber and a second adsorber.

5. The production process according to claim 2, characterized in that, The adsorber is connected with a water-containing raw material gas pipeline, and a switch valve is arranged on the pipeline.

6. The production process according to any one of claims 2-5, characterized in that, The adsorber is connected with a product gas pipeline and a buffer tank pipeline, and switch valves are arranged on the inlet and outlet.

7. The production process according to claim 6, characterized in that, The adsorber is connected with a regenerated gas pipeline, and switch valves are arranged on the inlet and outlet.

8. The production process according to claim 7, characterized in that, The adsorber is connected with a pressure reduction device through a regenerated gas pipeline, a switch valve is arranged on the pressure reduction device pipeline, a regenerated gas outlet switch valve is further arranged on the regenerated gas pipeline; and a pressure equalizing valve is arranged on the product gas pipeline.

9. Application of the production process of any one of claims 1-8 in the field of high-purity ammonia gas production.

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