An integrated breathing and washing device for ammonia storage tank

Abstract

The present application relates to ammonia storage technology field, more specifically, a kind of ammonia storage tank breathes water washing integrated device. Including ammonia storage tank, the inlet and outlet are provided on ammonia storage tank, breathes water washing rectangular box and is arranged at the top of ammonia storage tank, still including the lifting baffle of being divided into three independent spaces by breathes water washing rectangular box, fixed baffle and energy recovery component, salt water inlet is provided on breathes water washing rectangular box, salt water inlet is used to add salt water to breathes water washing rectangular box, fixed baffle is fixedly connected on breathes water washing rectangular box, fixed baffle is sealed with ammonia storage tank junction, lifting baffle is slidingly connected in breathes water washing rectangular box, with the advantage that ammonia gas can be avoided ammonia feeding to the escape of atmosphere, through the salt water between baffle to the water washing absorption of escaped ammonia gas, discharge can replace breathes valve, utilize the energy of discharge and ammonia gas fusion water process to carry out partial energy recovery.

Description

Technical Field

[0001] This invention relates to the field of ammonia storage technology, and more specifically to an integrated breathing and washing device for ammonia storage tanks. Background Technology

[0002] Currently, 20% ammonia water is frequently used as a reducing agent in selective catalytic reduction (SCR) systems and selective non-catalytic reduction (SNCR) systems for coal-fired flue gas.

[0003] Storage tanks used to store ammonia need to exchange gases with the atmosphere during the filling and emptying processes due to pressure balance. Simultaneously, because ammonia is volatile, the gas inside the tank contains a certain amount of ammonia gas, which cannot be directly discharged into the atmosphere and must be washed with water before release. Currently, the common solution is to install breather valves on the inlet and outlet pipes of the ammonia storage tank, which are then connected to a water-sealed tank. The gas inside the tank is then washed with water before being discharged. This solution is complex and expensive. Summary of the Invention

[0004] The purpose of this invention is to provide an integrated breathing and washing device for ammonia storage tanks, which has the advantages of an integrated breathing and washing device for ammonia storage tanks.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] An integrated breathing and washing device for an ammonia storage tank includes an ammonia storage tank with an inlet and an outlet. A rectangular breathing and washing box is located on top of the ammonia storage tank. The device also includes a lifting partition, a fixed partition, and an energy recovery component that divide the rectangular breathing and washing box into three independent spaces. The rectangular breathing and washing box has a demineralized water inlet for adding demineralized water to the box. The fixed partition is fixedly connected to the rectangular breathing and washing box, and the connection between the fixed partition and the ammonia storage tank is sealed. The lifting partition is slidably connected within the rectangular breathing and washing box. The connection between the rectangular breathing and washing box and the ammonia storage tank is located on the right side of the fixed partition. The energy recovery component is located at the connection between the rectangular breathing and washing box and the ammonia storage tank.

[0007] The working principle of this invention is as follows: Ammonia water is added to the ammonia storage tank through the inlet. When the ammonia storage tank is in the feeding state, ammonia gas in the ammonia water escapes, combining with the air in the ammonia storage tank, causing the pressure inside the ammonia storage tank to increase. The pressure balance is adjusted by the breathing water washing rectangular box. The adjustment principle is that demineralized water is added between the breathing water washing rectangular box and the fixed partition through the demineralized water inlet. The demineralized water seals the space between the breathing water washing rectangular box and the ammonia storage tank, and the air mixed with ammonia gas is discharged in the demineralized water. After washing with demineralized water... The process involves absorbing ammonia gas and venting only air. As the amount of ammonia in the bottle increases, the amount of gas vented decreases and eventually no more gas passes through the demineralized water. Since the ammonia gas dissolves in the water, it generates heat, which is absorbed by the energy recovery component. As the demineralized water is released from the outlet, the space between the ammonia storage tank and the breathing water washing rectangular box increases, creating a negative pressure. At the same time, the lifting baffle is raised, allowing the breathing water washing rectangular box and the ammonia storage tank to connect with the outside atmosphere. Outside gas enters and passes through the energy recovery component, where the kinetic energy of the gas is converted into storable electrical energy.

[0008] Preferably, the ammonia storage tank is provided with a connecting hole at the upper end, and the ammonia storage tank and the breathing water washing rectangular box are connected through the connecting hole.

[0009] Preferably, the energy recovery assembly includes a cold flow tube, a pneumatic generator, and a cold flow injection pipe. The cold flow tube is fitted onto the breathing water washing rectangular box, the pneumatic generator is fixedly connected to the breathing water washing rectangular box, the air outlet of the pneumatic generator is fixedly connected to the connecting hole, the cold flow injection pipe is fixedly connected to the cold flow tube, and a control valve is provided on the cold flow injection pipe.

[0010] Preferably, the rectangular breathing water washing box is fixedly connected to a guide sealing groove, and the lifting partition is slidably connected in the guide sealing groove.

[0011] Preferably, the device further includes a handwheel, a lifting nut, and a lifting screw for adjusting the height of the lifting partition. The lifting screw is fixedly connected to the lifting partition, and the lifting nut and the lifting screw are driven by a thread. The lifting nut is fixedly connected to the handwheel, and the handwheel is rotatably connected to the guide sealing groove.

[0012] Preferably, a limiting block is provided inside the breathing water washing rectangular box. The limiting block is located directly below the lifting partition and is fixedly connected to the guide sealing groove.

[0013] Preferably, the demineralized water inlet is equipped with a shut-off valve and a float valve, the float valve being used to monitor the demineralized water level inside the breathing water washing rectangular tank.

[0014] Preferably, the device further includes a drain valve, which is disposed between the ammonia storage tank and the breathing water washing rectangular box.

[0015] Preferably, an exhaust pipe is fixedly connected to the rectangular breathing water washing box, and the exhaust pipe is located on the left side of the lifting partition.

[0016] Preferably, a vacuum pressure scale is provided on the guide sealing groove.

[0017] The beneficial effects of this invention are:

[0018] 1. It can prevent ammonia gas from escaping into the atmosphere during ammonia water feeding, by using demineralized water between the baffles to wash and absorb the escaped ammonia gas.

[0019] 2. It can replace the breather valve during material discharge, which simplifies the system and reduces costs to some extent.

[0020] 3. Partial energy recovery is achieved by utilizing the energy from the discharge and ammonia melting process. Attached Figure Description

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is the A-direction view of the present invention.

[0024] In the diagram: 1. Ammonia storage tank; 2. Inlet; 3. Outlet; 4. Breathing water washing rectangular box; 5. Lifting baffle; 6. Fixed baffle; 7. Demineralized water inlet; 8. Exhaust pipe; 9. Connecting hole; 10. Guide sealing groove; 11. Handwheel; 12. Lifting nut; 13. Lifting screw; 14. Vacuum pressure scale; 15. Shut-off valve; 16. Float valve; 17. Drain valve; 18. Limit block; 19. Energy recovery component; 20. Cold flow tube; 21. Pneumatic generator; 22. Cold flow injection pipe; 23. Control valve. Detailed Implementation

[0025] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the invention.

[0026] This integrated breathing and washing device for ammonia storage tank can be referenced. Figure 1 An exemplary working process for absorbing escaping ammonia gas and recovering energy from an ammonia storage tank:

[0027] An integrated breathing and washing device for an ammonia storage tank includes an ammonia storage tank 1 with an inlet 2 and an outlet 3. A rectangular breathing and washing box 4 is located on top of the ammonia storage tank 1. The device also includes a lifting partition 5, a fixed partition 6, and an energy recovery assembly 19 that divide the rectangular breathing and washing box 4 into three independent spaces. The rectangular breathing and washing box 4, the lifting partition 5, and the fixed partition 6 are all made of 304 stainless steel. A demineralized water inlet 7 is provided on the rectangular breathing and washing box 4 for supplying... Demineralized water is added to the breathing water washing rectangular box 4. A fixed partition 6 is fixedly connected to the breathing water washing rectangular box 4. The connection between the fixed partition 6 and the ammonia storage tank 1 is sealed. A lifting partition 5 is slidably connected within the breathing water washing rectangular box 4. The connection between the breathing water washing rectangular box 4 and the ammonia storage tank 1 is located on the right side of the fixed partition 6. The energy recovery component 19 is located at the connection between the breathing water washing rectangular box 4 and the ammonia storage tank 1. Ammonia is added to the ammonia storage tank 1 through the inlet 2. When the ammonia storage tank 1 is in the feeding state... When the ammonia is in a certain state, the ammonia gas in the ammonia water escapes and combines with the air in the ammonia water storage tank 1, causing the pressure inside the ammonia water storage tank 1 to increase. The pressure balance is adjusted by the breathing water washing rectangular box 4. The adjustment principle is that demineralized water is added between the breathing water washing rectangular box 4 and the fixed partition 6 through the demineralized water inlet 7. The demineralized water seals the space between the breathing water washing rectangular box 4 and the ammonia water storage tank 1. The air mixed with ammonia gas is discharged in the demineralized water. After being washed by the demineralized water, the ammonia gas is absorbed and only the air is discharged. As the amount of ammonia water in the bottle increases, the amount of gas discharged decreases and gradually no more gas passes through the demineralized water. Since the ammonia gas dissolves in water and generates heat, the energy recovery component 19 absorbs the heat. As the demineralized water increases, during the process of releasing ammonia water from the outlet 3, the space between the ammonia water storage tank 1 and the breathing water washing rectangular box 4 increases and generates negative pressure. At the same time, the lifting partition 5 is raised so that the breathing water washing rectangular box 4 and the ammonia water storage tank 1 are connected to the outside atmosphere. The outside gas enters and passes through the energy recovery component 19, where the kinetic energy of the gas is converted into electrical energy that can be stored.

[0028] This integrated breathing and washing device for ammonia storage tank can be referenced. Figure 1 An exemplary working process for energy recovery:

[0029] An exhaust pipe 8 is fixedly connected to the rectangular breathing water washing box 4, located on the left side of the lifting partition 5. A connecting hole 9 is provided at the upper end of the ammonia storage tank 1, connecting the ammonia storage tank 1 and the rectangular breathing water washing box 4. The energy recovery component 19 includes a cold flow cylinder 20, a pneumatic generator 21, and a cold flow injection pipe 22. The cold flow cylinder 20 is fitted onto the rectangular breathing water washing box 4, and the pneumatic generator 21 is fixedly connected to the rectangular breathing water washing box 4. The exhaust port of the pneumatic generator 21 is fixedly connected to the connecting hole 9. The cold flow injection pipe 22 is fixedly connected to the cold flow cylinder 20, and a circulation pipe is provided on the cold flow cylinder 20. A control valve 23 is installed on the flow injection pipe 22. During the discharge process from the outlet 3, a negative pressure is generated in the breathing water washing rectangular box 4 and the ammonia storage tank 1. The gas enters through the exhaust pipe 8 and passes through the pneumatic generator 21, which drives the fan inside the pneumatic generator 21 to rotate and generate electricity through induction. Cold flow is injected through the cold flow injection pipe 22 and the circulating water flow generated through the circulation pipe can continuously absorb ammonia gas and dissolve it in water to generate heat. As the temperature of the demineralized water decreases, the absorption of ammonia gas increases. On the one hand, this increases the absorption of ammonia gas by the demineralized water, and on the other hand, it facilitates the reuse of the heated circulating water flow.

[0030] This integrated breathing and washing device for ammonia storage tank can be referenced. Figure 1 An exemplary procedure for adding demineralized water:

[0031] The rectangular breathing and washing box 4 is fixedly connected to a guide sealing groove 10. A lifting partition 5 is slidably connected within the guide sealing groove 10. The device also includes a handwheel 11, a lifting nut 12, and a lifting screw 13 for adjusting the height of the lifting partition 5. The lifting screw 13 is fixedly connected to the lifting partition 5. The lifting nut 12 and the lifting screw 13 are driven by a thread. The lifting nut 12 is fixedly connected to the handwheel 11, which is rotatably connected to the guide sealing groove 10. A limit block 18 is provided inside the rectangular breathing and washing box 4. 18 is located directly below the lifting baffle 5. The limiting block 18 is fixedly connected to the guide sealing groove 10. The demineralized water inlet 7 is equipped with a shut-off valve 15 and a float valve 16. The float valve 16 is used to monitor the demineralized water level in the breathing water washing rectangular box 4. The limiting block 18 is used to limit the descent position of the lifting baffle 5. When ammonia is added to the ammonia storage tank 1, the lifting baffle 5 is in contact with the limiting block 18. At this time, the path of the air and ammonia mixture through the demineralized water is the longest, and there is enough time to absorb the ammonia in the mixture.

[0032] When the device is started, the opening and closing liquid levels of the float valve 15 are set to the bottom of the lifting baffle 5 and the bottom &d / 2, respectively. The demineralized water inlet shut-off valve 16 is opened, and the demineralized water enters the rectangular box device 4 through the float valve 15 and the liquid level reaches &d / 2. When the ammonia storage tank 1 is in the feeding state, the ammonia and air mixture in the storage tank is compressed. The mixture enters the rectangular box device 4 through the opening 9 at the top of the ammonia storage tank 1. Under the pressure of the ammonia, the liquid level on the right side of the lifting baffle 5 drops and the liquid level on the left side rises. The mixture enters the demineralized water from the bottom of the lifting baffle 5. During the process, the ammonia is absorbed by the demineralized water.

[0033] This integrated breathing and washing device for ammonia storage tank can be referenced. Figure 1 An exemplary working process for demineralized water after it has been saturated with ammonia:

[0034] The device also includes a drain valve 17, which is located between the ammonia storage tank 1 and the breathing water washing rectangular box 4. After a period of operation, the ammonia concentration in the demineralized water increases, and the water washing absorption capacity for ammonia decreases accordingly. Fresh demineralized water needs to be replaced regularly. At this time, the shut-off valve 15 is closed and the drain valve 17 is opened, and the demineralized water is discharged into the ammonia storage tank 1. After the demineralized water in the device is drained, the drain valve 17 is closed and the shut-off valve 15 is opened to refill the device with water.

[0035] This integrated breathing and washing device for ammonia storage tank can be referenced. Figure 2 An exemplary procedure for adjusting the position of the lifting baffle using a vacuum pressure gauge before adding demineralized water:

[0036] The guide sealing groove 10 is equipped with a vacuum pressure scale 14 to mark the vacuum pressure setting value corresponding to different heights of the lifting partition 5. According to the ammonia concentration and the design value of the ammonia tank, the lifting partition 5 is set to rise and fall to the appropriate position by rotating the handwheel 11 by referring to the vacuum pressure scale 14, thus completing the process before adding demineralized water.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An ammonia water storage tank breathing water washing integrated device, comprising an ammonia water storage tank (1), the ammonia water storage tank (1) is provided with a feeding port (2) and a discharging port (3), and a breathing water washing rectangular box (4) is arranged on the top of the ammonia water storage tank (1), characterized in that: The application also comprises a lifting partition plate (5) and a fixed partition plate (6) for dividing the breathing water washing rectangular box (4) into three independent spaces, and an energy recovery assembly (19); the breathing water washing rectangular box (4) is provided with a desalted water inlet (7) for adding desalted water into the breathing water washing rectangular box (4); the fixed partition plate (6) is fixed on the breathing water washing rectangular box (4) and is sealed at the connection position with the ammonia water storage tank (1); the lifting partition plate (5) is slidingly connected in the breathing water washing rectangular box (4); the communication position of the breathing water washing rectangular box (4) and the ammonia water storage tank (1) is located at the right side of the fixed partition plate (6); and the energy recovery assembly (19) is located at the communication position of the breathing water washing rectangular box (4) and the ammonia water storage tank (1). The application principle of the device is as follows: ammonia water is added into the ammonia water storage tank through the feeding port; when the ammonia water storage tank is in the feeding state, ammonia gas in the ammonia water escapes and combines with air in the ammonia water storage tank to increase the pressure in the ammonia water storage tank; the pressure is balanced through the breathing water washing rectangular box; the adjustment principle is that desalted water is added between the breathing water washing rectangular box and the fixed partition plate through the desalted water inlet; the desalted water seals the space between the breathing water washing rectangular box and the ammonia water storage tank; air mixed with ammonia gas is discharged from the desalted water; the ammonia gas is absorbed and only air is discharged through the water washing of the desalted water; with the increase of ammonia water in the bottle, the discharged gas decreases and gradually no gas passes through the desalted water; since heat is generated when ammonia gas is dissolved in water, the heat is absorbed through the energy recovery assembly; with the desalted water, the space between the ammonia water storage tank and the breathing water washing rectangular box increases to generate negative pressure during the release of ammonia water through the discharging port; at the same time, the lifting partition plate is lifted to make the breathing water washing rectangular box and the ammonia water storage tank communicate with the outside atmosphere; the outside gas enters and is converted into storable electric energy through the energy recovery assembly. The energy recovery process is as follows: the exhaust pipe (8) is fixed on the breathing water washing rectangular box (4), and the exhaust pipe (8) is located on the left side of the lifting partition (5); the upper end of the ammonia water storage tank (1) is provided with a communication hole (9), and the ammonia water storage tank (1) and the breathing water washing rectangular box (4) are communicated through the communication hole (9); the energy recovery assembly (19) comprises a cold flow cylinder (20), a pneumatic generator (21) and a cold flow injection pipe (22), the cold flow cylinder (20) is sleeved on the breathing water washing rectangular box (4), the pneumatic generator (21) is fixed on the breathing water washing rectangular box (4), the air outlet hole of the pneumatic generator (21) is fixed with the communication hole (9), and the cold flow injection pipe (22) is fixed on the cold flow cylinder (20), and the cold flow injection pipe (22) is provided with a control valve (23); in the discharging process of the discharge port (3), negative pressure is generated in the breathing water washing rectangular box (4) and the ammonia water storage tank (1), gas enters through the exhaust pipe (8), the gas passes through the pneumatic generator (21) to drive the fan in the pneumatic generator (21) to rotate to generate induction power, cold flow is injected through the cold flow injection pipe (22), circulating water flow is generated through the circulating pipe, ammonia gas can be continuously absorbed in water to generate heat, and the absorption amount of ammonia gas increases with the decrease of the temperature of the desalted water; on the one hand, the absorption amount of ammonia gas by the desalted water is increased, and on the other hand, the circulating water flow with the increased temperature is reused.

2. The integrated water scrubbing and breathing apparatus for an ammonia storage tank of claim 1, wherein: The breathing water washing rectangular box (4) is fixed with a guide sealing groove (10), and the lifting partition (5) is slidingly connected in the guide sealing groove (10).

3. The integrated water scrubbing and breathing apparatus for an ammonia storage tank of claim 2, wherein: Further comprising a hand wheel (11), a lifting nut (12) and a lifting screw (13) for adjusting the height of the lifting partition (5), the lifting screw (13) is fixed with the lifting partition (5), the lifting nut (12) and the lifting screw (13) are in threaded transmission, the lifting nut (12) is fixed on the hand wheel (11), and the hand wheel (11) is rotationally connected on the guide sealing groove (10).

4. The integrated water scrubbing and breathing apparatus for an ammonia storage tank of claim 3, wherein: The breathing water washing rectangular box (4) is provided with a limiting block (18), the limiting block (18) is fixed on the upper end of the ammonia water storage tank (1), and the limiting block (18) is located directly below the lifting partition (5).

5. The integrated water scrubbing and breathing apparatus for an ammonia storage tank of claim 4, wherein: The desalted water inlet (7) is provided with a cut-off valve (15) and a float ball valve (16), and the float ball valve (16) is used for monitoring the water level of the desalted water in the breathing water washing rectangular box (4).

6. The integrated water scrubbing and breathing apparatus for an ammonia storage tank of claim 5, wherein: Further comprising a discharge valve (17), which is arranged between the ammonia water storage tank (1) and the breathing water washing rectangular box (4).

7. The integrated water scrubbing and breathing apparatus for an ammonia storage tank of claim 2, wherein: The guide sealing groove (10) is provided with a vacuum pressure scale (14).

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