Recycling device for ammonia gas led out from carbonization production

Abstract

The utility model discloses a recycling device for ammonia gas led out from carbonization production, which comprises a carbonization tower, a pressurizing mechanism is arranged at the top of the carbonization tower and is used for increasing the pressure when the ammonia gas is dissolved in water, a dissolving tower is arranged on one side of the pressurizing mechanism, and the dissolving tower is used for dissolving the ammonia gas in water. A stirring mechanism is arranged inside the dissolving tower and used for stirring an ammonia water mixed solution, water changing mechanisms are arranged inside and outside the dissolving tower and used for changing water when the concentration of the ammonia water mixed solution is saturated, a connecting pipe is arranged inside the top end of the dissolving tower, and a spraying head is arranged at the bottom end of the connecting pipe. The device for recycling the ammonia gas led out from the carbonization production solves the problems that in actual use, the dissolution rate of the ammonia gas is improved through atomization, but water needs to be replaced when the concentration of ammonia water is saturated, and the replacement time is difficult to determine.

Description

Technical Field

[0001] The utility model belongs to a recycling device, in particular to a recycling device for ammonia gas derived from carbonization production. Background Art

[0002] The ammonia recovery and utilization device derived from carbonization production is a device used to recover and utilize ammonia from the ammonia waste gas generated in the carbonization industrial process. In the carbonization industry, ammonia waste gas is usually generated. These waste gases contain useful components such as ammonia and need to be treated to recover and utilize the ammonia therein.

[0003] The utility model patent with authorization announcement number: CN205216518U discloses a device for recovering and utilizing ammonia gas derived from carbonization production, including a carbonization tower, a negative pressure pump, a gas transmission pipe, a dissolution tower, a water inlet pipe, an electric valve, a sprayer, and a circulating water pump. Compared with the prior art, the device for recovering and utilizing ammonia gas derived from carbonization production has a simple structure and powerful functions. It can recover and utilize ammonia gas in the carbonization tower and prevent ammonia gas from being discharged into the air, thereby avoiding ammonia gas from polluting the environment and saving resources at the same time.

[0004] In actual use, the contact area between water and ammonia is expanded by spraying, thereby increasing the rate at which ammonia dissolves in water. However, when the ammonia concentration reaches saturation, ammonia will no longer dissolve and the water needs to be changed. However, the time for changing the water is difficult to determine. In addition to increasing the contact area between ammonia and water to increase the dissolution rate, the rate at which ammonia dissolves in water can also be further increased by pressurizing and stirring.

[0005] Therefore, it is necessary to provide a new ammonia recovery and utilization device derived from carbonization production to solve the above technical problems. Utility Model Content

[0006] The utility model aims to provide a device for recovering and utilizing ammonia gas derived from carbonization production, so as to solve the problems existing in the prior art.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: comprising a carbonization tower, a pressurizing mechanism is arranged on the top of the carbonization tower, the pressurizing mechanism is used to increase the pressure when ammonia is dissolved in water, a dissolution tower is arranged on one side of the pressurizing mechanism, a stirring mechanism is arranged inside the dissolution tower, the stirring mechanism is used to stir the ammonia water mixed solution, a water changing mechanism is arranged inside and outside the dissolution tower, the water changing mechanism is used to change water when the concentration of the ammonia water mixed solution is saturated, a connecting pipe is arranged inside the top of the dissolution tower, and a spray head is arranged at the bottom end of the connecting pipe.

[0008] Preferably, the pressurizing mechanism includes a vacuum pump, which is arranged at the top of the carbonization tower. A gas pipe is arranged at the top of the vacuum pump, a one-way air inlet valve is arranged inside the gas pipe, one end of the gas pipe is connected to the interior of the dissolution tower, and a pressure sensor is arranged inside the dissolution tower.

[0009] In order to achieve the effect of stirring to accelerate the dissolution of ammonia in water, preferably, the stirring mechanism includes a drive motor, the drive motor is arranged at the bottom of the dissolution tower, and one end of the drive motor connector is connected to a stirring rod.

[0010] In order to achieve the effect of storing the saturated ammonia mixed solution, preferably, the bottom of the dissolution tower is connected to a downpipe, and a water storage tank is provided at the other end of the downpipe.

[0011] In order to achieve the effect of changing water when the ammonia concentration is saturated, preferably, the water changing mechanism includes a water inlet solenoid valve, the water inlet solenoid valve is arranged at the top of the connecting pipe, an ammonia concentration sensor is arranged inside the dissolution tower, an ammonia concentration sensor is arranged at the bottom of the dissolution tower, and a water outlet solenoid valve is arranged at one end of the sewer pipe.

[0012] In order to achieve the effect of circulating spray to dissolve ammonia, preferably, one side of the bottom of the dissolution tower is connected to a water pump, the other end of the water pump is provided with a water pump, the top of the water pump is provided with a water supply pipe, and one end of the water supply pipe is connected to the inside of the connecting pipe.

[0013] Compared with the prior art, the utility model has the following beneficial effects: a relatively high pressure is maintained when ammonia is dissolved in water in the dissolution tower by a pressurizing mechanism, thereby accelerating the rate at which ammonia dissolves in water; secondly, a mixed solution of ammonia and water is stirred by a stirring mechanism, thereby further increasing the rate at which ammonia dissolves in water; finally, a saturated ammonia water mixed solution is automatically replaced with water by a water changing mechanism, thereby ensuring the stability of ammonia dissolution and avoiding the problem of a decrease or even cessation of the rate at which ammonia dissolves in water due to failure to replace water in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of the ammonia recovery and utilization device derived from carbonization production in the utility model.

[0015] Numbers in the figure:

[0016] 1. Carbonization tower; 2. Pressurization mechanism; 21. Vacuum pump; 22. Air pipe; 23. One-way air inlet valve; 24. Pressure sensor; 3. Dissolution tower; 4. Stirring mechanism; 41. Drive motor; 42. Stirring rod; 5. Water changing mechanism; 51. Water inlet solenoid valve; 52. Ammonia concentration sensor; 53. Ammonia water concentration sensor; 54. Water outlet solenoid valve; 6. Connecting pipe; 7. Spray head; 8. Drain pipe; 9. Water storage tank; 10. Suction pipe; 11. Suction pump; 12. Water supply pipe. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0018] Please refer to Figure 1 ,in Figure 1 The overall structural diagram of the ammonia recovery and utilization device derived from carbonization production of the utility model. The ammonia recovery and utilization device derived from carbonization production includes a carbonization tower 1, a pressurizing mechanism 2 is arranged on the top of the carbonization tower 1, and the pressurizing mechanism 2 is used to increase the pressure when ammonia is dissolved in water, a dissolution tower 3 is arranged on one side of the pressurizing mechanism 2, and a stirring mechanism 4 is arranged inside the dissolution tower 3, and the stirring mechanism 4 is used to stir the ammonia water mixed solution, and a water changing mechanism 5 is arranged inside and outside the dissolution tower 3, and the water changing mechanism 5 is used to replace water when the concentration of the ammonia water mixed solution is saturated, and a connecting pipe 6 is arranged inside the top of the dissolution tower 3, and a spray head 7 is arranged at the bottom of the connecting pipe 6.

[0019] In the specific implementation process, Figure 1 As shown, the pressurizing mechanism 2 includes an air pump 21, which is arranged at the top of the carbonization tower 1. A gas pipe 22 is arranged at the top of the air pump 21. A one-way air inlet valve 23 is arranged inside the gas pipe 22. One end of the gas pipe 22 is connected to the interior of the dissolution tower 3, and a pressure sensor 24 is arranged inside the dissolution tower 3.

[0020] refer to Figure 1 As shown, the stirring mechanism 4 includes a driving motor 41, which is arranged at the bottom of the dissolution tower 3, and a stirring rod 42 is connected to one end of a connecting piece of the driving motor 41.

[0021] refer to Figure 1 As shown, the bottom of the dissolution tower 3 is connected to a downpipe 8, and a water storage tank 9 is provided at the other end of the downpipe 8.

[0022] refer to Figure 1 As shown, the water changing mechanism 5 includes a water inlet solenoid valve 51, which is arranged at the top of the connecting pipe 6, an ammonia concentration sensor 52 is arranged inside the dissolution tower 3, an ammonia concentration sensor 53 is arranged at the bottom of the dissolution tower 3, and a water outlet solenoid valve 54 is arranged at one end of the downpipe 8.

[0023] refer to Figure 1 As shown, one side of the bottom of the dissolution tower 3 is connected to a pumping pipe 10, the other end of the pumping pipe 10 is provided with a pumping pump 11, the top of the pumping pump 11 is provided with a water supply pipe 12, and one end of the water supply pipe 12 is connected to the inside of the connecting pipe 6.

[0024] It should be noted that one end of the gas pipe 22 is connected to the interior of the dissolution tower 3, and ammonia can only flow from the gas pipe 22 into the interior of the dissolution tower 3 through the one-way air inlet valve 23. The diameter of the upper end of the dissolution tower 3 is larger than the diameter of the lower end. The drive motor 41 is installed at the bottom of the dissolution tower 3 by bolts. The top of the downpipe 8 is connected to the opening at the bottom of the dissolution tower 3, and the pumping pipe 10 is connected to the opening of the bottom side wall of the dissolution tower 3.

[0025] The working principle of the ammonia recovery and utilization device derived from carbonization production provided by the utility model is as follows:

[0026] When in use, the vacuum pump 21 draws the ammonia in the carbonizing tower 1 to the air pipe 22, and flows into the interior of the dissolving tower 3 through the one-way air inlet valve 23. Due to the one-way restriction of the one-way air inlet valve 23, the ammonia cannot flow back from the dissolving tower 3 to the air pipe 22. When the pressure sensor 24 in the dissolving tower 3 measures that the pressure reaches a certain threshold, the vacuum pump 21 stops working, the top of the connecting pipe 6 is connected to the water pipe, and the water inlet solenoid valve 51 controls a certain amount of water to flow into the connecting pipe 6. The water then enters the dissolving tower 3 in the form of mist through the spray head 7. The spray is fully in contact with the ammonia in the upper half of the dissolving tower 3. The dissolving tower 3 is designed to be larger at the top and smaller at the bottom so that the spray has sufficient space to contact with the ammonia, and part of the ammonia is redundant in the water. At this time, the drive motor 41 is started, and the drive motor 41 drives the stirring rod 42 to rotate. The stirring rod 42 stirs the ammonia water mixed solution at the bottom of the dissolving tower 3. Liquid, increase the rate of water dissolving ammonia, the water pump 11 is started, the ammonia mixed solution is sucked in from the water pumping pipe 10 and refluxed from the water supply pipe 12 to the connecting pipe 6, and then contacts with ammonia again in the form of spray through the spray head 7. When the ammonia concentration sensor 52 detects that the ammonia concentration in the dissolution tower 3 has dropped, the air pump 21 is started again to draw the ammonia in the carbonization tower 1 into the dissolution tower 3. When the ammonia concentration sensor 53 detects that the concentration of the ammonia mixed solution is saturated, the water outlet solenoid valve 54 is automatically opened, and the saturated ammonia mixed solution flows from the downpipe 8 into the water storage tank 9 for storage. The water inlet solenoid valve 51 is opened, and a certain amount of water flows into the dissolution tower 3 in the form of spray again. The cycle is repeated until the ammonia concentration sensor 52 detects that the ammonia concentration is zero, that is, it is determined that no ammonia flows out of the carbonization tower 1, and the entire device ends.

[0027] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A device for recovering and utilizing ammonia gas from carbonization production, characterized in that: The invention comprises a carbonization tower (1), wherein a pressurizing mechanism (2) is arranged at the top of the carbonization tower (1), wherein the pressurizing mechanism (2) is used to increase the pressure when ammonia gas is dissolved in water; a dissolution tower (3) is arranged on one side of the pressurizing mechanism (2); a stirring mechanism (4) is arranged inside the dissolution tower (3), wherein the stirring mechanism (4) is used to stir an ammonia water mixed solution; a water changing mechanism (5) is arranged inside and outside the dissolution tower (3), wherein the water changing mechanism (5) is used to change water when the concentration of the ammonia water mixed solution is saturated; a connecting pipe (6) is arranged inside the top of the dissolution tower (3), wherein a spray head (7) is arranged at the bottom end of the connecting pipe (6).

2. The ammonia recovery and utilization device derived from carbonization production according to claim 1 is characterized in that: The pressurizing mechanism (2) comprises an air pump (21), the air pump (21) is arranged at the top of the carbonization tower (1), an air supply pipe (22) is arranged at the top of the air pump (21), a one-way air inlet valve (23) is arranged inside the air supply pipe (22), one end of the air supply pipe (22) is connected to the inside of the dissolution tower (3), and a pressure sensor (24) is arranged inside the dissolution tower (3).

3. The ammonia recovery and utilization device derived from carbonization production according to claim 1 is characterized in that: The stirring mechanism (4) comprises a driving motor (41), the driving motor (41) is arranged at the bottom of the dissolution tower (3), and one end of a connecting piece of the driving motor (41) is connected to a stirring rod (42).

4. The ammonia recovery and utilization device derived from carbonization production according to claim 1 is characterized by: The bottom of the dissolution tower (3) is connected to a downpipe (8), and a water storage tank (9) is provided at the other end of the downpipe (8).

5. The device for recycling ammonia gas produced by carbonization production according to claim 4, characterized in that: The water exchange mechanism (5) comprises a water inlet solenoid valve (51), the water inlet solenoid valve (51) is arranged at the top of the connecting pipe (6), an ammonia concentration sensor (52) is arranged inside the dissolution tower (3), an ammonia concentration sensor (53) is arranged at the bottom of the dissolution tower (3), and a water outlet solenoid valve (54) is arranged at one end of the downpipe (8).

6. The device for recycling ammonia gas generated by carbonization production according to claim 1, characterized in that: One side of the bottom of the dissolution tower (3) is connected to a water pumping pipe (10), and the water pumping pipe (10) A water pump (11) is provided at the other end, and a water supply pipe (12) is provided at the top of the water pump (11). One end of the water supply pipe (12) is in communication with the interior of the connecting pipe (6).

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