A distillation tower inert recovery ammonia production equipment

Abstract

The present invention relates to the field of ammonia production equipment, and in particular to a distillation tower exhaust recovery ammonia production equipment. Technical problem: In the prior art, flowing water will flow away quickly and cannot fully absorb ammonia, that is, the solubility of ammonia in water is not saturated, and water resources are not utilized to the maximum extent; and when using stagnant water to dissolve ammonia in inert gas, if the water source is not replaced in time after the ammonia is dissolved to saturation, the ammonia cannot continue to be absorbed. Technical solution: A distillation tower exhaust recovery ammonia production equipment, including a shell, a vent valve and an ammonia production system; the shell is equipped with a vent valve; the shell and the vent valve are connected to the ammonia production system. By alternately opening the gas pipe, ammonia and water are dissolved in a static manner, which can increase the concentration of ammonia water and also has a fluid dissolution effect, so that ammonia can be fully dissolved in water, solving the problem that flowing water is used to dissolve ammonia, resulting in low ammonia solubility in water.

Description

Technical Field

[0001] The present invention relates to the field of ammonia production equipment, in particular to a distillation tower exhaust recovery ammonia production equipment. Background Art

[0002] Existing ammonia production technology utilizes inert gas in a distillation tower to produce ammonia water. However, when ammonia is dissolved in water to produce ammonia water, when the ammonia water concentration reaches saturation, the rate at which ammonia in the inert gas dissolves in water will be significantly reduced. The undissolved inert gas cannot be discharged in time and accumulates in the inert gas exhaust pipe, resulting in the subsequent gas discharged from the distillation tower being unable to pass smoothly, making it impossible to carry out the ammonia production operation smoothly, and resulting in the inability to effectively reduce the ammonia content in the discharged residual liquid.

[0003] In the prior art, when dissolving ammonia in an inert gas, flowing water is used to dissolve the ammonia in the inert gas in order to ensure that the ammonia in the inert gas can be fully dissolved in water. However, this method has obvious disadvantages. The flowing water will flow away quickly and cannot fully absorb the ammonia. That is, the solubility of ammonia in the water is not saturated, and the water resource is not utilized to the maximum extent. However, if stagnant water is used to dissolve the ammonia in the inert gas, after a long period of dissolution reaction, the concentration of the ammonia water reaches a maximum and can no longer dissolve the ammonia in the inert gas, making it impossible for the ammonia in the inert gas to be fully dissolved. If the water source is not replaced in time, the ammonia content in the discharged residual liquid will still not be effectively reduced. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art in which flowing water is used to dissolve ammonia in inert gas, resulting in low solubility of ammonia in water and failure to maximize utilization of water resources, and in which stagnant water is used to dissolve ammonia in inert gas, resulting in inability to fully dissolve ammonia in the inert gas and failure to effectively reduce the ammonia content in the discharged residual liquid, the present invention provides a distillation tower inert gas discharge and recovery ammonia production equipment.

[0005] The technical implementation scheme of the present invention is: a distillation tower inert gas recovery ammonia production equipment, including a shell, a vent valve, an ammonia production system, a residual ammonia collection system and a secondary reaction system; the shell is equipped with a vent valve; the shell and the vent valve are commonly connected to the ammonia production system; the shell is connected to the residual ammonia collection system; the ammonia production system and the residual ammonia collection system are commonly connected to the secondary reaction system; the ammonia production system is used to continuously and stably perform ammonia production operations; the residual ammonia collection system is used to collect inert gases that have not been completely dissolved and reacted in the ammonia production system; the secondary reaction system is used to enable the inert gases remaining in the ammonia production system to react with ammonia water again.

[0006] In addition, it is particularly preferred that the ammonia production system includes an ammonia production component and an ammonia water discharge component; the shell and the vent valve are commonly connected to the ammonia production component; and the shell and the ammonia production component are commonly connected to the ammonia water discharge component.

[0007] In addition, it is particularly preferred that the ammonia production component includes a reaction cylinder, a hollow water ring, an air cylinder, an air outlet pipe, a first water pipe and a water spray plate; the shell is equipped with a reaction cylinder, and the reaction cylinder is connected to the ventilation valve; the reaction cylinder is connected to two hollow water rings distributed up and down; the reaction cylinder is equipped with an air cylinder, and the air cylinder is connected to the ventilation valve; the air cylinder is connected to two air outlet pipe groups distributed up and down, and each air outlet pipe group consists of four air outlet pipes distributed in a circular array; the two hollow water rings are each connected to a first water pipe, and the two first water pipes pass through the shell; the two hollow water rings are each connected to a water spray plate group, each water spray plate group consists of four water spray plates distributed in a circular array, and the water spray plate is connected to the reaction cylinder.

[0008] In addition, it is particularly preferred that a partition is further included; the partition is fixedly connected to the middle of the reaction cylinder, and the partition is located between the two gas outlet pipe groups.

[0009] In addition, it is particularly preferred that the ammonia discharge assembly includes a mounting plate, a second water pipe and a third water pipe; the reaction cylinder is connected to two third water pipes distributed up and down, and the two third water pipes pass through the shell, and the two third water pipes are respectively located below the hollow water rings on the corresponding sides; the two third water pipes are commonly connected to a second water pipe; the second water pipe is fixedly connected to the mounting plate.

[0010] In addition, it is particularly preferred that the residual ammonia collection system includes a residual ammonia extraction component and a residual ammonia collection component; the shell and the mounting plate are jointly connected to the residual ammonia extraction component; the shell and the residual ammonia extraction component are jointly connected to the residual ammonia collection component.

[0011] In addition, it is particularly preferred that the residual ammonia extraction assembly includes a ventilation pipe and an exhaust pipe; the mounting plate is fixed with the ventilation pipe; the ventilation pipe is connected to four exhaust pipes in the shape of an inverted large character, and the four exhaust pipes all pass through the shell and the reaction cylinder in turn, and the two upper exhaust pipes and the two lower exhaust pipes are respectively located on the upper and lower sides of the partition.

[0012] In addition, it is particularly preferred that the residual ammonia collection component includes an exhaust valve; the ventilation pipe is connected to the two exhaust valves, and the exhaust valves pass through the shell.

[0013] In addition, it is particularly preferred that the secondary reaction system includes a fixed ring, a mounting pipe and a water outlet valve; the second water pipe is connected to the mounting pipe, and the mounting pipe is connected to the ventilation pipe; the mounting pipe is fixedly connected to two fixed rings; and the Tesla valve is connected to the water outlet valve.

[0014] In addition, it is particularly preferred that a Tesla valve is further included; a Tesla valve is arranged inside the installation pipe.

[0015] Beneficial effects: The device is installed at the inert gas discharge port of the distillation tower, and the inert gas is introduced into the shell through the vent valve. The ammonia production system adopts the method of alternately opening the gas pipeline, so that the dissolution water can be replaced in time. The ammonia and water are dissolved in a static manner, which can increase the concentration of ammonia water. It also has a fluid dissolution effect, so that the ammonia in the inert gas can be fully dissolved in the water, solving the problem of traditional use of flowing water to dissolve ammonia in the inert gas, resulting in low solubility of ammonia in the water and failure to maximize the utilization of water resources; it also solves the problem of using stagnant water to dissolve ammonia in the inert gas, which makes the ammonia in the inert gas unable to be fully dissolved;

[0016] The residual ammonia collection system is used to transport the inert gas that is difficult to dissolve in the ammonia production system to the secondary reaction system, so that the inert gas discharged from the distillation tower can smoothly enter the ammonia production system through the vent valve, thereby preventing the undissolved inert gas from being unable to be discharged in time and accumulating in the inert gas exhaust pipe, which will cause the subsequent gas discharged from the distillation tower to be unable to pass smoothly, making the ammonia production operation unable to proceed smoothly;

[0017] Through the secondary reaction system, flowing water is used to dissolve the residual ammonia in the inert gas, allowing the ammonia to dissolve quickly and fully in the water. The slow flow rate of the water allows a longer dissolution reaction time for the ammonia and water, and the dissolution reaction effect is more thorough. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a first structural schematic diagram of the distillation tower inert recovery ammonia production equipment disclosed in the present invention;

[0019] Figure 2 This is a second structural schematic diagram of the distillation tower inert recovery ammonia production equipment disclosed in the present invention;

[0020] Figure 3 This is a cross-sectional view of the structure of the distillation tower inert recovery ammonia production equipment disclosed in the present invention;

[0021] Figure 4 A cross-sectional view of the first part of the structure of the distillation tower inert recovery ammonia production equipment disclosed in the present invention;

[0022] Figure 5 A cross-sectional view of the second part of the structure of the distillation tower inert recovery ammonia production equipment disclosed in the present invention;

[0023] Figure 6 This is a structural cross-sectional view of an ammonia production component in an ammonia production system disclosed in the distillation tower inert recovery ammonia production equipment of the present invention.

[0024] In the figure: 1-shell, 2-vent valve, 101-reaction cylinder, 102-hollow water ring, 103-partition, 104-gas cylinder, 105-air outlet pipe, 106-first water pipe, 107-water spray plate, 111-mounting plate, 112-second water pipe, 113-third water pipe, 201-vent pipe, 202-exhaust pipe, 211-exhaust valve, 301-fixing ring, 302-mounting pipe, 303-Tesla valve, 304-water outlet valve. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Example 1

[0027] A distillation tower exhaust recovery ammonia production equipment, such as Figure 1-6 As shown, it includes a shell 1, a vent valve 2, an ammonia production system, a residual ammonia collection system and a secondary reaction system; the shell 1 is equipped with a vent valve 2; the shell 1 and the vent valve 2 are commonly connected to the ammonia production system; the shell 1 is connected to the residual ammonia collection system; the ammonia production system and the residual ammonia collection system are commonly connected to the secondary reaction system; the ammonia production system adopts the method of alternately opening the gas pipeline, so that the ammonia production operation can be carried out continuously and stably, and water can absorb the ammonia in the inert gas to the greatest extent while making the concentrated ammonia in the inert gas fully dissolved in the water; the inert gas remaining in the ammonia production system can react with ammonia water again through the residual ammonia collection system and the secondary reaction system, and by controlling the flow rate of ammonia water, a small amount of ammonia in the inert gas can have a longer dissolution reaction time with ammonia water, so that the ammonia in the inert gas can be more fully dissolved in water, significantly reducing the ammonia content in the inert gas.

[0028] The existing technology uses flowing water to dissolve ammonia in the inert gas, which makes the solubility of ammonia in the water not high and the water resources are not used to the maximum extent; using stagnant water to dissolve ammonia in the inert gas makes it impossible for the ammonia in the inert gas to be fully dissolved, resulting in the ammonia content in the discharged residual liquid still not being able to be effectively reduced; first, the device is installed at the inert gas discharge port of the distillation tower, and the inert gas is introduced into the shell 1 through the vent valve 2. The ammonia production system adopts the method of alternately opening the gas pipeline, so that the ammonia production operation can be carried out continuously and stably. Water can absorb the ammonia in the inert gas to the maximum extent while making the concentration of the inert gas The ammonia gas is fully dissolved in the water, and the dissolving water can be replaced in time, so that the water resources can be utilized to the greatest extent and the ammonia concentration in the produced ammonia water is higher; the inert gas remaining in the ammonia production system can react with the ammonia water again through the residual ammonia collection system and the secondary reaction system, and by controlling the flow rate of the ammonia water, a small amount of ammonia in the inert gas can have a longer dissolution reaction time with the ammonia water, so that the ammonia in the inert gas can be more fully dissolved in the water, significantly reducing the ammonia content in the inert gas and reducing the ammonia content in the steam produced by the gasification furnace jacket, thereby reducing the ammonia content in the gasification circulating water and the desulfurization circulating water.

[0029] The ammonia production system includes an ammonia production component and an ammonia water discharge component; the shell 1 and the vent valve 2 are commonly connected to the ammonia production component; the shell 1 and the ammonia production component are commonly connected to the ammonia water discharge component.

[0030] The ammonia production component includes a reaction cylinder 101, a hollow water ring 102, a gas cylinder 104, an air outlet pipe 105, a first water pipe 106 and a water spray plate 107; the shell 1 is equipped with the reaction cylinder 101, and the reaction cylinder 101 is connected to the vent valve 2; the reaction cylinder 101 is connected to two hollow water rings 102 distributed up and down; the reaction cylinder 101 is equipped with a gas cylinder 104, and the gas cylinder 104 is connected to the vent valve 2; the gas cylinder 104 is connected to two upper and lower hollow water rings 102. There are two groups of air outlet pipes 105, and each group of air outlet pipes 105 consists of four air outlet pipes 105 distributed in a circular array; each of the two hollow water rings 102 is connected to a first water pipe 106, and the two first water pipes 106 pass through the shell 1; each of the two hollow water rings 102 is connected to a group of water spray plates 107, and each group of water spray plates 107 consists of four water spray plates 107 distributed in a circular array, and the water spray plates 107 are connected to the reaction cylinder 101.

[0031] The separator 103 is fixedly connected to the middle of the reaction tube 101, and the separator 103 is located between the two gas outlet pipes 105. The separator 103 separates the reaction tube 101 into two areas so that the ammonia production operation can be carried out alternately.

[0032] The ammonia discharge assembly includes a mounting plate 111, a second water pipe 112 and a third water pipe 113; the reaction cylinder 101 is connected to two third water pipes 113 distributed up and down, and the two third water pipes 113 pass through the shell 1, and the two third water pipes 113 are respectively located below the hollow water ring 102 on the corresponding side; the two third water pipes 113 are commonly connected to a second water pipe 112; the second water pipe 112 is fixedly connected to the mounting plate 111.

[0033] The residual ammonia collection system includes a residual ammonia extraction component and a residual ammonia collection component; the shell 1 and the mounting plate 111 are commonly connected to the residual ammonia extraction component; the shell 1 and the residual ammonia extraction component are commonly connected to the residual ammonia collection component.

[0034] The residual ammonia extraction assembly includes a vent pipe 201 and an exhaust pipe 202; the mounting plate 111 is fixedly connected to the vent pipe 201; the vent pipe 201 is connected to four exhaust pipes 202 in the shape of an inverted U, and the four exhaust pipes 202 all pass through the shell 1 and the reaction cylinder 101 in sequence, and the two upper exhaust pipes 202 and the two lower exhaust pipes 202 are respectively located on the upper and lower sides of the partition 103.

[0035] The residual ammonia collection assembly includes an air extraction valve 211 ; the vent pipe 201 is connected to the two air extraction valves 211 , and the air extraction valves 211 pass through the shell 1 .

[0036] The secondary reaction system includes a fixing ring 301 , a mounting pipe 302 and a water outlet valve 304 ; the second water pipe 112 is connected to the mounting pipe 302 , and the mounting pipe 302 is connected to the vent pipe 201 ; the mounting pipe 302 is fixedly connected to two fixing rings 301 ; the Tesla valve 303 is connected to the water outlet valve 304 .

[0037] A Tesla valve 303 is also included; the Tesla valve 303 is provided inside the installation pipe 302, and the flow rate of the ammonia solution is controlled by the Tesla valve 303, so that a small amount of ammonia in the inert gas can have a longer dissolution reaction time with the ammonia solution.

[0038] Each gas outlet pipe 105 is respectively opposite to the water spray plate 107 on the corresponding side, so that the inert gas in the gas outlet pipe 105 can directly contact with the water sprayed by the water spray plate 107 and undergo a dissolution reaction immediately.

[0039] The specific working of the present invention is to install the device at the inert gas discharge port of the distillation tower, and pass the inert gas from the vent valve 2 into the reaction cylinder 101 and the gas delivery cylinder 104 in the shell 1;

[0040] Prior to this, the lower air outlet pipe 105 is controlled to be closed, and the upper air outlet pipe 105 is controlled to be opened, so that the inert gas in the air delivery cylinder 104 can be input from the upper air delivery cylinder 104 into the space of the reaction cylinder 101 located above the partition 103. At the same time, water is sprayed into the space of the reaction cylinder 101 located above the partition 103 through the upper first water pipe 106, the upper hollow water ring 102 and the upper water spray plate 107 in sequence, so that the ammonia in the inert gas in the space of the reaction cylinder 101 located above the partition 103 is dissolved in the sprayed water.

[0041] As more inert gas is introduced into the space of the reaction tube 101 above the partition 103 from the vent valve 2, the concentration of ammonia water in the space of the upper reaction tube 101 increases, and the speed at which ammonia in the inert gas dissolves in water also slows down. However, at this time, the discharge port of the distillation tower is still continuously inputting inert gas into the vent valve 2. As a result, the undissolved inert gas cannot be discharged in time and accumulates in the inert gas discharge pipe, thereby preventing the subsequent gas discharged from the distillation tower from passing smoothly, making it impossible for the ammonia production operation to proceed smoothly.

[0042] At this time, in order to avoid this problem, the upper air outlet pipe 105 is controlled to be closed and the lower air outlet pipe 105 is opened, so that the inert gas in the air delivery cylinder 104 is input into the space of the reaction cylinder 101 below the partition 103. At the same time, water is sprayed into the space of the reaction cylinder 101 below the partition 103 through the lower first water pipe 106, the lower hollow water ring 102 and the lower water spray plate 107 in sequence, so that the ammonia in the inert gas in the space of the reaction cylinder 101 below the partition 103 is dissolved in the sprayed water.

[0043] At the same time, the first water pipe 106 above is controlled to stop supplying water, and the saturated ammonia water in the space of the reaction cylinder 101 above the partition 103 is transported to the second water pipe 112 through the third water pipe 113 above, and then discharged through the second water pipe 112, the Tesla valve 303 and the water outlet valve 304 in sequence;

[0044] In this way, the upper and lower gas outlet pipes 105 are opened alternately, so that the ammonia production operation can be carried out continuously and stably. The water can absorb the ammonia in the inert gas to the maximum extent, and the dissolving water can be replaced in time, so that the water resources can be utilized to the maximum extent, and the ammonia concentration in the produced ammonia water can be higher.

[0045] It should be noted that when most of the ammonia in the inert gas in the reaction tube 101 space above the partition 103 is dissolved in water, but as the solubility of ammonia water gradually increases, the dissolution rate of ammonia slows down, and a small part of the ammonia in the inert gas has not yet dissolved in water, and most of the ammonia in the inert gas that is soluble in water has dissolved, but the gases of other components in the inert gas are difficult to dissolve in water and still exist in the reaction tube 101 space above the partition 103. If this part of the inert gas is not discharged from the reaction tube 101 space above the partition 103, it will be difficult for the inert gas subsequently introduced from the vent valve 2 to enter the reaction tube 101 space above the partition 103. For this reason, the inert gas in the reaction tube 101 space above the partition 103 can be discharged through the two exhaust pipes 202 above. The residual inert gas in the space of the reaction tube 101 above 103 is discharged and discharged into the installation pipe 302 and the Tesla valve 303 through the exhaust pipe 202 and the vent pipe 201 in sequence, so that a small amount of ammonia in this part of the inert gas can be dissolved again in the ammonia water introduced into the Tesla valve 303 from the second water pipe 112. Due to the special structure of the Tesla valve 303, the ammonia water flows slowly, so that the small amount of ammonia in the inert gas can have a longer dissolution reaction time with the ammonia water, so that the ammonia in the inert gas can be more fully dissolved in the water, significantly reducing the ammonia content in the inert gas and reducing the ammonia content in the steam produced by the gasification furnace jacket, thereby reducing the ammonia content in the gasification circulating water and the desulfurization circulating water;

[0046] Similarly, when the ammonia solution in the space of the reaction tube 101 below the partition 103 is saturated, the ammonia solution in the space is controlled to be discharged, and the residual inert gas is discharged to allow it to dissolve and react again, and finally the ammonia solution and the reacted inert gas are discharged;

[0047] It should be noted that when inert gas overflows from the gap of the reaction cylinder 101 or the first water pipe 106 into the shell 1, and overflows from the shell 1 into the air, it causes environmental pollution; for this reason, the inert gas overflowing from the shell 1 can be extracted through the exhaust valve 211 and input into the installation pipe 302 and the Tesla valve 303 through the ventilation pipe 201, so that it reacts with the ammonia solution in the Tesla valve 303 to reduce the possibility of environmental pollution.

[0048] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art from this disclosure that various changes or modifications may be made to the present invention without departing from the principles and spirit of the invention as defined in the claims. Therefore, the detailed description of the disclosed embodiments is intended to be illustrative only and not to limit the present invention, which is to be defined by the claims.

Claims

1. A distillation tower exhaust recovery ammonia production device, comprising a housing (1) and a vent valve (2); the housing (1) is equipped with the vent valve (2); and the device is characterized by: The invention also includes an ammonia production system, a residual ammonia collection system and a secondary reaction system; the shell (1) and the vent valve (2) are connected to the ammonia production system; the shell (1) is connected to the residual ammonia collection system; the ammonia production system and the residual ammonia collection system are connected to the secondary reaction system; the ammonia production system is used to continuously and stably perform ammonia production operations; the residual ammonia collection system is used to collect inert gas that has not been completely dissolved and reacted in the ammonia production system; the secondary reaction system is used to allow the residual inert gas in the ammonia production system to react with ammonia water again; The ammonia production component comprises a reaction cylinder (101), a hollow water ring (102), a gas cylinder (104), an air outlet pipe (105), a first water pipe (106) and a water spray plate (107); the shell (1) is equipped with the reaction cylinder (101), and the reaction cylinder (101) is connected to the vent valve (2); the reaction cylinder (101) is connected to two hollow water rings (102) distributed up and down; the reaction cylinder (101) is equipped with a gas cylinder (104), and the gas cylinder (104) is connected to the vent valve (2); the gas cylinder (104) is connected to two The invention relates to a plurality of air outlet pipe (105) groups distributed up and down, and each air outlet pipe (105) group is composed of four air outlet pipes (105) distributed in a circular array; the two hollow water rings (102) are each connected to a first water pipe (106), and the two first water pipes (106) pass through the shell (1); the two hollow water rings (102) are each connected to a water spray plate (107) group, and each water spray plate (107) group is composed of four water spray plates (107) distributed in a circular array, and the water spray plates (107) are connected to the reaction cylinder (101).

2. A distillation tower exhaust recovery ammonia production equipment according to claim 1, characterized in that: The ammonia system comprises an ammonia production component and an ammonia water discharge component; the shell (1) and the vent valve (2) are commonly connected to the ammonia production component; and the shell (1) and the ammonia production component are commonly connected to the ammonia water discharge component.

3. The ammonia production equipment for recovering inert gas from a distillation tower according to claim 1, characterized in that: It also includes a partition (103); the partition (103) is fixedly connected to the middle of the reaction cylinder (101), and the partition (103) is located between the two gas outlet pipe (105) groups.

4. A distillation tower exhaust recovery ammonia production equipment according to claim 3, characterized in that: ammonia water The discharge assembly comprises a mounting plate (111), a second water pipe (112) and a third water pipe (113); the reaction cylinder (101) is connected to two third water pipes (113) distributed up and down, and the two third water pipes (113) pass through the shell (1), and the two third water pipes (113) are respectively located below the hollow water ring (102) on the corresponding side; the two third water pipes (113) are commonly connected to a second water pipe (112); the second water pipe (112) is fixedly connected to the mounting plate (111).

5. A distillation tower exhaust recovery ammonia production equipment according to claim 4, characterized in that: The ammonia collection system comprises a surplus ammonia extraction component and a surplus ammonia collection component; the shell (1) and the mounting plate (111) are jointly connected to the surplus ammonia extraction component; the shell (1) and the surplus ammonia extraction component are jointly connected to the surplus ammonia collection component.

6. The ammonia production equipment for recovering inert gas from a distillation tower according to claim 5, characterized in that: The residual ammonia extraction assembly comprises a vent pipe (201) and an exhaust pipe (202); the mounting plate (111) is fixedly connected to the vent pipe (201); the vent pipe (201) is connected to four exhaust pipes (202) in the shape of an inverted letter "U", and the four exhaust pipes (202) all pass through the shell (1) and the reaction cylinder (101) in sequence, and the two upper exhaust pipes (202) and the two lower exhaust pipes (202) are respectively located on the upper and lower sides of the partition (103).

7. The ammonia production equipment for recovering inert gas from a distillation tower according to claim 6, characterized in that: The residual ammonia collection component includes an air extraction valve (211); the vent pipe (201) is connected to the two air extraction valves (211), and the air extraction valves (211) pass through the shell (1).

8. The ammonia production equipment for recovering inert gas from a distillation tower according to claim 7, characterized in that: The secondary reaction system includes a fixed ring (301), a mounting pipe (302) and a water outlet valve (304); the second water pipe (112) is connected to the mounting pipe (302), and the mounting pipe (302) is connected to the ventilation pipe (201); the mounting pipe (302) is fixedly connected to the two fixed rings (301); and the Tesla valve (303) is connected to the water outlet valve (304).

9. The distillation tower inert recovery ammonia production equipment according to claim 8, characterized in that: It also includes a Tesla valve (303); the Tesla valve (303) is arranged inside the installation pipe (302).

Images