A condensing device for facilitating recycling of ammonia water

Abstract

The utility model relates to ammonia water recovery technical field, and disclose a kind of condensing device for ammonia water recovery recycling, including pretreatment box, heat recovery tank and condensing box, the middle part of the top end of pretreatment box is connected with ammonia water steam inlet pipe, stop valve is arranged in series on ammonia water steam inlet pipe, the metal heat exchange coil pipe of stainless steel material is fixed with coiling in heat recovery tank inside.The condensing device for ammonia water recovery recycling, through the synergic cooperation of heat recovery tank and metal heat exchange coil pipe, ammonia water steam exchanges heat with cold water in heat recovery tank in metal heat exchange coil pipe, realizes heat recovery, cold water can be secondary utilization after heat absorption, improves energy utilization rate;Steam temperature is reduced after heat recovery, reduces the temperature difference with cooling liquid in condensing box, avoids sudden cooling condensation and blocks pipeline, lays foundation for subsequent efficient condensation, solves the problem of waste heat before condensation and easy condensation of existing device.

Description

Technical Field

[0001] This utility model relates to the field of ammonia water recovery technology, specifically a condensation device that facilitates the recycling and reuse of ammonia water. Background Technology

[0002] Ammonia is a commonly used reagent in chemical, pharmaceutical, and agricultural fields. It is often generated in the form of steam during production. Direct discharge of ammonia not only wastes resources but also pollutes the environment. Therefore, it needs to be recovered and recycled through a condensation device.

[0003] The existing patent document CN210356082U provides a condensation device that facilitates the recycling and reuse of ammonia water. This condensation device facilitates the atomization of water, increases the contact area between water and ammonia gas, and facilitates the production of ammonia water. During the ammonia water production process, it facilitates the cooling of the atomized water droplets and can automatically control the refrigeration temperature of the condenser, which helps to save energy and facilitates the automatic extraction of the generated ammonia water.

[0004] However, existing condensation devices designed for ammonia recovery and recycling are not suitable for heat recovery and temperature pretreatment of ammonia vapor. During the condensation process of ammonia recovery and recycling, the large temperature difference between the untreated ammonia vapor and the coolant in the condenser can easily trigger a rapid cooling effect upon contact. The rapid cooling of the vapor causes it to condense directly into liquid water on the surface of the condensing components, gradually accumulating to form a dense liquid film. This liquid film acts as a barrier on the surface of the condensing components, significantly reducing the heat transfer efficiency between subsequent ammonia vapor and the components. Previously, the vapor could directly contact the condensing component wall to release heat; now, it must penetrate the liquid film to complete heat exchange, resulting in a significant decrease in the heat exchange rate. Simultaneously, the liquid film may block the flow channels of the condensing components (such as the mesh of the condenser plate and gaps in the pipes), further hindering steam flow. Under these dual effects, the overall condensation effect is directly reduced. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The purpose of this invention is to provide a condensation device that facilitates the recovery and recycling of ammonia water, thereby solving the problem mentioned in the background art that existing condensation devices that facilitate the recovery and recycling of ammonia water are not convenient for heat recovery and temperature pretreatment of ammonia water vapor.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a condensation device for easy ammonia water recovery and recycling, comprising a pretreatment box, a heat recovery box and a condensation box, wherein an ammonia water vapor inlet pipe is connected through the middle of the top of the pretreatment box, and a shut-off valve is connected in series on the ammonia water vapor inlet pipe, and a stainless steel metal heat exchange coil is coiled and fixed inside the heat recovery box.

[0009] The input and output ends of the metal heat exchange coil both penetrate the same side wall of the heat recovery box and extend to the outside. The output end of the pretreatment box and the input end of the metal heat exchange coil are sealed and connected by a No. 1 one-way pipe. A water inlet pipe is connected through one side of the top of the heat recovery box, and a drain pipe is connected through one side of the bottom of the heat recovery box.

[0010] As a further improvement to the above scheme, a No. 1 filter plate and a No. 2 filter plate are arranged horizontally in sequence along the gas flow direction inside the pretreatment box, and the pore size of the No. 2 filter plate is smaller than that of the No. 1 filter plate.

[0011] As a further improvement to the above solution, the outer walls of both the No. 1 and No. 2 filter plates are fixed with arc-shaped plates. The inner curvature of the arc-shaped plates is perfectly matched with the outer curvature of the pretreatment box, and the two are connected by fasteners.

[0012] As a further improvement to the above solution, the output end of the metal heat exchange coil is sealed to the condenser box via a No. 2 one-way pipe.

[0013] As a further improvement to the above solution, multiple sets of aluminum alloy mesh-shaped condensing plates are fixed inside the condensing box, and the multiple sets of condensing plates are staggered and spliced ​​in the vertical direction to form a multi-fold flow guiding structure.

[0014] As a further improvement to the above solution, the bottom of the condenser is integrally formed with a liquid collection hopper, and a drain pipe is provided through the middle of the bottom of the liquid collection hopper. A tempered glass visible scale window is embedded in one side wall of the condenser.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This condensation device, which facilitates the recovery and recycling of ammonia water, utilizes the coordinated operation of a heat recovery box and metal heat exchange coils. Ammonia water vapor exchanges heat with cold water in the heat recovery box within the metal heat exchange coils, achieving heat recovery. The cold water can be reused after absorbing heat, improving energy efficiency. Simultaneously, the temperature of the steam decreases after heat recovery, reducing the temperature difference with the coolant in the condensation box and preventing sudden cooling and condensation that could clog the pipes. This lays the foundation for subsequent efficient condensation and solves the problems of heat waste and easy condensation before condensation in existing devices.

[0017] 2. This condensation device, which facilitates the recovery and recycling of ammonia water, utilizes the coordinated operation of filter plates No. 1 and No. 2 with arc-shaped plates. The No. 1 and No. 2 filter plates employ different pore sizes to achieve graded filtration, effectively intercepting large particles and fine impurities in ammonia water vapor. The arc-shaped plates and fasteners ensure the stable installation of the filter plates, preventing them from loosening or shifting under steam impact. This solves the problems of incomplete impurity filtration and easy detachment of filter plates in existing devices, ensuring unobstructed flow in subsequent condensation pipelines.

[0018] 3. This condensation device, which facilitates the recovery and recycling of ammonia water, utilizes the coordinated operation of an aluminum alloy mesh condenser plate and a visible scale window. The mesh structure allows for smooth flow of ammonia water vapor and full contact with the condenser plate, while the multi-fold flow-guiding structure increases the heat exchange area and improves condensation efficiency. The visible scale window facilitates real-time observation of the ammonia water level in the collection hopper, and the drain pipe enables precise drainage. This solves the problems of low condensation efficiency and difficulty in monitoring the amount of ammonia water recovered in existing devices, ensuring the quality of ammonia water recovery and the convenience of recycling. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the pretreatment box of this utility model;

[0021] Figure 3 This is a three-dimensional structural diagram of the condenser box of this utility model;

[0022] Figure 4 This is an enlarged structural schematic diagram of a portion of the arc-shaped plate of this utility model.

[0023] In the diagram: 1. Pretreatment box; 2. Heat recovery box; 3. Condensation box; 4. Ammonia steam inlet pipe; 5. Metal heat exchange coil; 6. No. 1 one-way pipe; 7. Water inlet pipe; 8. Drain pipe; 9. No. 1 filter plate; 10. No. 2 filter plate; 11. Arc plate; 12. No. 2 one-way pipe; 13. Condensation plate; 14. Liquid collection hopper; 15. Drain pipe; 16. Visual scale window. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1 - Figure 4This utility model provides a technical solution: a condensation device that facilitates the recovery and recycling of ammonia water, including a pretreatment box 1, a heat recovery box 2 and a condensation box 3. An ammonia water vapor inlet pipe 4 is connected through the middle of the top of the pretreatment box 1. A shut-off valve is connected in series on the ammonia water vapor inlet pipe 4. A stainless steel metal heat exchange coil 5 is coiled and fixed inside the heat recovery box 2.

[0026] The input and output ends of the metal heat exchange coil 5 both penetrate the same side wall of the heat recovery box 2 and extend to the outside. The output end of the pretreatment box 1 and the input end of the metal heat exchange coil 5 are sealed and connected by a No. 1 one-way pipe 6. A water inlet pipe 7 is connected through one side of the top of the heat recovery box 2, and a drain pipe 8 is connected through one side of the bottom of the heat recovery box 2.

[0027] The pretreated pure ammonia steam enters the first one-way pipe 6 through the output end of the pretreatment box 1. Under the directional guidance of the one-way valve, it flows precisely into the coiled and fixed stainless steel metal heat exchange coil 5 inside the heat recovery box 2. At the same time, the valves of the top water inlet pipe 7 and the bottom drain pipe 8 of the heat recovery box 2 are opened, allowing cold water to circulate in the heat recovery box 2 at a stable flow rate. When the steam travels through the metal heat exchange coil 5, it forms an efficient heat exchange with the cold water in the box: after absorbing the heat carried by the steam, the cold water is discharged from the drain pipe 8 and can be used for workshop heating, equipment preheating and other process links, realizing secondary energy utilization and significantly reducing energy consumption; while the ammonia steam releases heat, and its temperature gradually decreases to close to the condensation temperature, effectively reducing the temperature difference with the environment inside the condensation box 3, avoiding the problem of pipe condensation and blockage caused by sudden cooling, and clearing obstacles for efficient condensation.

[0028] Inside the pretreatment box 1, a first filter plate 9 and a second filter plate 10 are arranged horizontally along the gas flow direction. The aperture of the second filter plate 10 is smaller than that of the first filter plate 9. An arc-shaped plate 11 is fixed on the outer wall of both the first filter plate 9 and the second filter plate 10. The inner curvature of the arc-shaped plate 11 is perfectly matched with the outer curvature of the pretreatment box 1, and the two are connected by fasteners. The output end of the metal heat exchange coil 5 is sealed to the condenser box 3 through a second one-way pipe 12. Inside the condenser box 3, multiple sets of aluminum alloy mesh condenser plates 13 are fixed. The multiple sets of condenser plates 13 are staggered in the vertical direction to form a multi-fold flow guiding structure. A liquid collection hopper 14 is integrally formed at the bottom of the condenser box 3. A drain pipe 15 is installed through the middle of the bottom of the liquid collection hopper 14. A tempered glass visible scale window 16 is embedded on one side wall of the condenser box 3.

[0029] After the condensing device, which facilitates the recovery and recycling of ammonia water, is started, the shut-off valve on the ammonia water steam inlet pipe 4 is first opened, and the mixed steam containing ammonia water is stably transported to the pretreatment box 1 through this pipe. The steam first comes into contact with the No. 1 filter plate 9, which is horizontally arranged along the flow direction. Its larger pore size can efficiently intercept large particles of dust and impurities mixed in with the steam, thus initially purifying the steam. Then the steam continues to flow through the No. 2 filter plate 10, which has a smaller pore size, to further filter fine particles and suspended solids, achieving two-stage precise filtration. During this process, the arc-shaped plate 11 on the outer wall of the filter plate perfectly matches the outer arc of the pretreatment box 1 due to its inner curvature. Combined with the fixing effect of the fasteners, it can firmly lock the position of the filter plate, preventing the filter plate from loosening or shifting due to high-speed steam impact, and ensuring stable filtration effect. The ammonia water steam that has undergone heat recovery enters the condensing box 3 through the unidirectional guide pipe 12. Multiple sets of aluminum alloy mesh condensing plates 13 are vertically interlocked to form a multi-fold flow-guiding structure. The mesh design ensures smooth steam flow while maximizing the contact area between the steam and the condensing plates 13. The multi-fold structure extends the residence time of the steam in the box, allowing it to fully contact the low-temperature condensing plate 13 wall, quickly releasing heat and condensing into liquid ammonia. The condensed ammonia, influenced by gravity and the tilt angle of the condensing plates 13, flows slowly along the plate wall, eventually collecting in the integrally formed collection hopper 14 at the bottom of the condensing box 3. Operators can clearly observe the real-time liquid level of the ammonia in the collection hopper 14 through the tempered glass viewing window 16 embedded in the side wall of the condensing box 3. When the liquid level reaches the required amount for recycling, the valve of the drain pipe 15 at the bottom of the collection hopper 14 is opened to discharge the ammonia with the required purity and temperature, directly supplying it to the production equipment for recycling. No additional purification treatment is required throughout the process, significantly improving recovery efficiency and ease of use.

[0030] Working Principle: After the condenser, which facilitates the recovery and recycling of ammonia water, is started, the shut-off valve on the ammonia water steam inlet pipe 4 is opened first, and the mixed steam containing ammonia water is stably transported to the pretreatment tank 1 through this pipe. The steam first comes into contact with the first filter plate 9, which is horizontally arranged along the flow direction. Its larger pore size can efficiently intercept large particles of dust and impurities mixed in the steam, thus initially purifying the steam. Subsequently, the steam continues to flow through the second filter plate 10, which has a smaller pore size, to further filter fine particles and suspended solids, achieving two-stage precise filtration. During this process, the arc-shaped plate 11 on the outer wall of the filter plate perfectly matches the outer arc of the pretreatment tank 1 due to its inner curvature. Combined with the fixing effect of the fasteners, it can firmly lock the position of the filter plate, preventing the filter plate from loosening or shifting due to high-speed steam impact, and ensuring stable filtration effect. The purified ammonia water steam that has completed pretreatment enters the first one-way pipe 6 through the output end of the pretreatment tank 1. Under the directional guidance of the one-way valve, it flows precisely into the coiled and fixed stainless steel metal heat exchange coil 5 inside the heat recovery tank 2. At this time, the valves of the top water inlet pipe 7 and the bottom drain pipe 8 of the heat recovery tank 2 are opened simultaneously, allowing cold water to circulate within the heat recovery tank 2 at a stable flow rate. When the steam travels through the metal heat exchange coil 5, it forms an efficient heat exchange with the cold water in the tank: after absorbing the heat carried by the steam, the cold water is discharged from the drain pipe 8 and can be used for other process steps such as workshop heating and equipment preheating, realizing secondary energy utilization and significantly reducing energy consumption; while the ammonia steam releases heat, and its temperature gradually decreases to near the condensation temperature, effectively reducing the temperature difference between the steam and the environment inside the condensation tank 3, fundamentally avoiding the problem of pipe condensation and blockage caused by sudden cooling, and clearing obstacles for efficient condensation. The ammonia steam that has undergone heat recovery enters the condensation tank 3 through the unidirectional guide pipe 12. Multiple sets of aluminum alloy mesh condensing plates 13 are vertically interlocked to form a multi-fold flow-guiding structure. The mesh design ensures smooth steam flow while maximizing the contact area between the steam and the condensing plates 13. The multi-fold structure extends the residence time of the steam in the box, allowing it to fully contact the low-temperature condensing plate 13 wall, quickly releasing heat and condensing into liquid ammonia. The condensed ammonia, influenced by gravity and the tilt angle of the condensing plates 13, flows slowly along the plate wall, eventually collecting in the integrally formed collection hopper 14 at the bottom of the condensing box 3. Operators can clearly observe the real-time liquid level of the ammonia in the collection hopper 14 through the tempered glass viewing window 16 embedded in the side wall of the condensing box 3. When the liquid level reaches the required amount for recycling, the valve of the drain pipe 15 at the bottom of the collection hopper 14 is opened to discharge the ammonia with the required purity and temperature, directly supplying it to the production equipment for recycling. No additional purification treatment is required throughout the process, significantly improving recovery efficiency and ease of use.

[0031] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. A condensation device for easy ammonia water recovery and recycling, comprising a pretreatment tank (1), a heat recovery tank (2), and a condensation tank (3), characterized in that: The pretreatment box (1) is connected to the middle of the top of the ammonia steam inlet pipe (4), and a shut-off valve is connected in series on the ammonia steam inlet pipe (4). The heat recovery box (2) is filled with a stainless steel metal heat exchange coil (5). The input and output ends of the metal heat exchange coil (5) both penetrate the same side wall of the heat recovery box (2) and extend to the outside. The output end of the pretreatment box (1) and the input end of the metal heat exchange coil (5) are sealed and connected by a No. 1 one-way pipe (6). A water inlet pipe (7) is connected through one side of the top of the heat recovery box (2), and a drain pipe (8) is connected through one side of the bottom of the heat recovery box (2).

2. The condensation device for easy ammonia water recovery and recycling according to claim 1, characterized in that: Inside the pretreatment box (1), a first filter plate (9) and a second filter plate (10) are arranged horizontally in sequence along the gas flow direction. The pore size of the second filter plate (10) is smaller than that of the first filter plate (9).

3. A condensation device for easy ammonia recovery and recycling according to claim 2, characterized in that: Both the No. 1 filter plate (9) and the No. 2 filter plate (10) have an arc plate (11) fixed on their outer walls. The inner arc of the arc plate (11) is perfectly matched with the outer arc of the pretreatment box (1), and the two are connected by fasteners.

4. A condensation device for easy ammonia recovery and recycling according to claim 1, characterized in that: The output end of the metal heat exchange coil (5) is sealed to the condenser box (3) through a second one-way pipe (12).

5. A condensation device for easy ammonia recovery and recycling according to claim 1, characterized in that: The condenser box (3) has multiple sets of aluminum alloy mesh condenser plates (13) fixed inside. The multiple sets of condenser plates (13) are staggered and spliced ​​in the vertical direction to form a multi-fold flow guiding structure.

6. A condensation device for easy ammonia recovery and recycling according to claim 1, characterized in that: The bottom of the condenser (3) is integrally formed with a liquid collection hopper (14), and a drain pipe (15) is provided through the middle of the bottom of the liquid collection hopper (14). A tempered glass visible scale window (16) is embedded in one side wall of the condenser (3).

Images