Ammonia absorption tower with cooling function

Abstract

The application relates to an ammonia water absorption tower with a cooling function, which comprises an absorption tank, a spraying unit and a gas pumping unit and the like; the spraying unit is connected to the inside of the absorption tank; the gas pumping unit is connected to the inside of the absorption tank; and the gas pumping unit is connected with the spraying unit. The spraying unit sprays the ammonia water in the upper part of the absorption tank in a reverse-bowl shape after cooling, the ammonia water is gathered and continuously cooled in the lower part of the absorption tank, the gas pumping unit blows the ammonia gas in the upper part of the absorption tank downwards, the ammonia gas is introduced into the ammonia water in the lower part of the absorption tank, and the overflowed ammonia gas is absorbed by the sprayed ammonia water again. The ammonia water is preliminarily cooled and then sprayed out, a reverse-bowl water curtain is formed below the partition plate, the contact area with the ammonia gas is increased, the dissolution of the ammonia gas is facilitated, the impurities are separated from the side wall of the first annular groove through the revolution and revolution of the roller, the ammonia gas is directly introduced into the ammonia water, the contact area with the ammonia water is increased, and the absorption of the ammonia water is more sufficient.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of ammonia water absorption tower, in particular to an ammonia water absorption tower with cooling function. BACKGROUND

[0002] The ammonia water of the existing ammonia absorption tower of the refining regeneration system only has one-stage cooling. Since the water cooling design is small, the circulating ammonia water temperature is high, the ammonia absorption tower has poor first-stage and second-stage absorption effect, the ammonia content of the regeneration gas outlet is high (1.0 mg / L), and the regeneration gas is recovered at the inlet of the electrostatic decoking, so that the ammonia content in the coal gas is high, the ammonia content in the desulfurization circulating water is high, the compressor is seriously loaded with sulfur, and the operation cycle of the compressor is affected.

[0003] Moreover, in order to avoid ammonia gas escaping into the air, affecting the environment and stimulating the respiratory tract of workers, causing problems in the health of workers, the ammonia water absorption tower is generally in a closed environment, impurities inside are not easy to clean, and the heat of the ammonia water is not easy to dissipate. Moreover, the higher the temperature of the ammonia water is, the lower the solubility of the ammonia gas is, so that the ammonia gas escaping increases, and the ammonia content in the ammonia water is high, causing the compressor to be seriously loaded with sulfur. SUMMARY

[0004] The technical problem of the present application is to provide an ammonia water absorption tower with cooling function.

[0005] In order to overcome the shortcomings that the ammonia water absorption tower is generally in a closed environment, impurities inside are not easy to clean, and the higher the temperature of the ammonia water is, the lower the solubility of the ammonia gas is, and the ammonia water is not cooled in time, so that the ammonia gas escaping increases, the present application provides an ammonia water absorption tower with cooling function.

[0006] To solve the above technical problems, the technical implementation scheme adopted by the present application is as follows:

[0007] The ammonia water absorption tower with cooling function comprises a support, an absorption tank, a water supply pipe and a drain pipe. Four supports are arranged in a ring array. An absorption tank is fixedly connected to the upper parts of the four supports. A water supply pipe is connected to the upper part of the absorption tank. A drain pipe is connected to the lower part of the absorption tank. The ammonia water absorption tower further comprises a spraying unit, a scale prevention unit, a gas pumping unit and a water filtering unit. The spraying unit is connected to the inside of the absorption tank. The scale prevention unit is connected to the upper part of the spraying unit to prevent scale deposition. The gas pumping unit is connected to the inside of the absorption tank. The gas pumping unit is connected to the spraying unit. The spraying unit sprays the ammonia water in the upper part of the absorption tank downward in a reverse bowl shape after cooling. The ammonia water is gathered in the lower part of the absorption tank and continues to be cooled. The gas pumping unit blows the ammonia gas in the upper part of the absorption tank downward. The ammonia gas is introduced into the ammonia water in the lower part of the absorption tank. The overflowed ammonia gas is absorbed by the sprayed ammonia water again. The absorption tank is connected to the water filtering unit. The lower part of the water filtering unit is connected to the gas pumping unit.

[0008] Optionally, the spraying unit comprises a partition plate, an air guide pipe, a first cooling pipe, a spray head, a second cooling pipe, a first filter and a third cooling pipe; the middle part of the inner surface of the absorption tank is fixedly connected with the partition plate; the partition plate is connected with the anti-deposition unit; the left part and the right part of the partition plate are each communicated with an air guide pipe; the lower part of the inner surface of the absorption tank is connected with the first cooling pipe; the middle part of the partition plate is provided with an upper opening first annular groove; the partition plate is internally provided with a second annular groove; the second annular groove is coaxial with the first annular groove, and the diameter of the second annular groove is larger than that of the first annular groove; the lower parts of the two air guide pipes are communicated with the second annular groove; the second cooling pipe is installed in the second annular groove; the second cooling pipe is attached to the side wall close to the axis of the second annular groove; a ring of spray heads is installed on the lower part of the partition plate; the upper parts of each of the spray heads are communicated with the first annular groove; the lower part of the second annular groove is annularly arrayed with a plurality of round holes; each of the round holes is provided with a first filter for filtering water; the partition plate is internally provided with a third annular groove; the third annular groove is coaxial with the second annular groove, and the diameter of the third annular groove is smaller than that of the first annular groove; the third cooling pipe is installed in the third annular groove; the third cooling pipe is attached to the side wall away from the axis of the second annular groove.

[0009] Optionally, the upper part of the partition plate is provided with a bowl-shaped groove.

[0010] Optionally, the top of the air guide pipe is sealed, and a plurality of air holes are formed in the upper part of the outer annular surface of the air guide pipe.

[0011] Optionally, the anti-deposition unit comprises a power assembly, a gear, an internal tooth ring, a first connecting rod, a scraper and a roller; the right part of the partition plate is provided with a fixing groove; the power assembly is installed in the fixing groove; the output shaft of the power assembly is fixedly connected with the gear; the upper part of the partition plate is rotationally connected with the internal tooth ring; the right part of the internal tooth ring is engaged with the gear; the left part and the right part of the internal tooth ring are each fixedly connected with a first connecting rod; the two first connecting rods are each fixedly connected with a scraper; each of the scrapers is located in the first annular groove; the left part and the right part of each of the scrapers are each rotationally connected with a roller; each of the rollers is in rolling connection with the first annular groove.

[0012] Optionally, the air pumping unit comprises a disc, an air suction cover, a blower, a main air pipe and a branch air pipe; the upper part of the inner surface of the absorption tank is connected with the disc; a plurality of leakage grooves are annularly arrayed on the disc; the middle part of the disc is fixedly connected with the air suction cover; the air suction cover is connected with the water filtering unit; a plurality of air holes are formed in the side wall of the air suction cover; the blower is installed in the air suction cover; the lower part of the air suction cover is communicated with the main air pipe; the lower part of the main air pipe is communicated with a plurality of branch air pipes; the bottom of each of the branch air pipes is lower than the bottom of the cylindrical first cooling pipe.

[0013] Optionally, a ring-shaped wall is arranged at the edge of the upper surface of the disc.

[0014] Optionally, the air holes in the air suction cover are obliquely downwardly formed.

[0015] Optionally, the water filtering unit comprises an electric actuator, a second connecting rod, a support rod and a ring, two electric actuators are installed on the upper part of the absorption tank, the telescopic parts of the two electric actuators are connected with the second connecting rod, the second connecting rod is fixedly connected with two support rods, the two support rods are located between the two electric actuators, the lower parts of the two support rods are fixedly connected with the ring, the inner diameter of the ring is larger than the diameter of the upper part of the air extraction cover, and the second filter is movably connected to the outer surface of the air extraction cover.

[0016] Optionally, the second filter is a deformable water-absorbing cotton.

[0017] The beneficial effects of the present application are: 1. The second cooling pipe and the third cooling pipe jointly cool the ammonia water entering the first annular groove, and then the primary cooled ammonia water is sprayed out through the spray head. The sprayed ammonia water forms an inverted bowl-shaped water curtain below the partition plate, increases the contact area with ammonia gas, facilitates the dissolution of ammonia gas, the first cooling pipe also cools the space below the partition plate, so that the ammonia water droplets sprayed by the spray head are rapidly cooled, and the solubility of ammonia gas is increased.

[0018] 2. The revolution and revolution of the roller are carried out at the same time. In the revolution process of the roller, the impurities on the side wall of the first annular groove are contacted and separated from the side wall of the first annular groove, so as to avoid the accumulation of impurities on the side wall of the first annular groove. The impurities accumulated in the nozzle port are swept away by the scraper bottom to avoid the blockage of the nozzle.

[0019] 3. The ammonia gas in the upper part of the absorption tank directly enters the ammonia water, the contact area with the ammonia water is increased, the absorption of the ammonia water is more sufficient, and part of the ammonia gas that has not been absorbed escapes above the liquid surface. The ammonia gas floats up due to its small density, and then contacts the inverted bowl-shaped water curtain of the ammonia water during the floating process. The surface area of the ammonia water droplets is increased, and the ammonia water has also been primary cooled at this time. The solubility of ammonia gas is also increased, so that the floating ammonia gas is fully dissolved in the water curtain of the ammonia water. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a perspective view of the ammonia water absorption tower with cooling function of the present application;

[0021] Figure 2 It is a sectional view of the ammonia water absorption tower with cooling function of the present application;

[0022] Figure 3 It is a perspective view of the spraying unit of the ammonia water absorption tower with cooling function of the present application;

[0023] Figure 4 It is a first partial perspective view of the spraying unit of the ammonia water absorption tower with cooling function of the present application;

[0024] Figure 5 Figure 1 is a schematic view of a cooling ammonia absorption tower according to the present application; Figure 4 Figure 2 is a schematic view of an enlarged structure of A in Figure 1;

[0025] Figure 6 Figure 3 is a schematic view of a second partial structure of a spraying unit of the cooling ammonia absorption tower according to the present application;

[0026] Figure 7 Figure 4 is a schematic view of a structure of an anti-fouling unit of the cooling ammonia absorption tower according to the present application;

[0027] Figure 8 Figure 5 is a schematic view of a partial structure of the anti-fouling unit of the cooling ammonia absorption tower according to the present application;

[0028] Figure 9 Figure 6 is a schematic view of a structure of a pump unit of the cooling ammonia absorption tower according to the present application;

[0029] Figure 10 Figure 7 is a schematic view of a structure of a water filtering unit of the cooling ammonia absorption tower according to the present application;

[0030] Figure 11 Figure 8 is a schematic view of a combined structure of the cooling ammonia absorption tower according to the present application.

[0031] Reference signs in the drawings: 1 - support, 2 - absorption tank, 3 - water supply pipe, 4 - water discharge pipe;

[0032] 101 - partition plate, 102 - air guide pipe, 103 - first cooling pipe, 104 - spray head, 105 - second cooling pipe, 106 - first filter, 107 - third cooling pipe, 10101 - first annular groove, 10102 - second annular groove, 10103 - circular hole, 10104 - third annular groove, 10105 - fixing groove, 201 - power assembly, 202 - gear, 203 - inner tooth ring, 204 - first connecting rod, 205 - scraper, 206 - roller, 301 - disc, 302 - air extraction cover, 303 - air blower, 304 - main air pipe, 305 - branch air pipe, 30101 - leakage groove, 401 - electric actuator, 402 - second connecting rod, 403 - support rod, 404 - circular ring, 405 - second filter. DETAILED DESCRIPTION

[0033] Embodiments of the present application will be described below with reference to the accompanying drawings.

[0034] First Embodiment

[0035] A cooling ammonia absorption tower according to the present application comprises: Figures 1-2As shown, it comprises the support 1, the absorption tank 2, the water delivery pipe 3 and the water discharge pipe 4; the four supports 1 are arranged in a ring array; the upper parts of the four supports 1 are fixedly connected with the absorption tank 2; the upper part of the absorption tank 2 is communicated with the water delivery pipe 3; the lower part of the absorption tank 2 is communicated with the water discharge pipe 4;

[0036] It also comprises the spraying unit, the anti-deposition unit, the air pumping unit and the water filtering unit; the spraying unit is connected in the absorption tank 2; the upper part of the spraying unit is connected with the anti-deposition unit; the air pumping unit is connected in the absorption tank 2; the air pumping unit is connected with the spraying unit; the spraying unit sprays the ammonia water in the upper part of the absorption tank 2 in a reverse-bowl shape after cooling, the ammonia water is gathered in the lower part of the absorption tank 2 and continues to be cooled, the air pumping unit blows the ammonia gas in the upper part of the absorption tank 2 downward, the ammonia gas is introduced into the ammonia water in the lower part of the absorption tank 2, and the overflowed ammonia gas is absorbed by the sprayed ammonia water again; the absorption tank 2 is connected with the water filtering unit; the lower part of the water filtering unit is connected with the air pumping unit.

[0037] The second specific embodiment

[0038] On the basis of the first specific embodiment, according to Figure 2 and Figures 3-6 As shown, the spraying unit comprises the partition plate 101, the air guide pipe 102, the first cooling pipe 103, the spray head 104, the second cooling pipe 105, the first filter 106 and the third cooling pipe 107; the middle part of the inner surface of the absorption tank 2 is welded with the partition plate 101; the partition plate 101 is connected with the anti-deposition unit; the left part and the right part of the partition plate 101 are each communicated with one air guide pipe 102; the lower part of the inner surface of the absorption tank 2 is connected with the first cooling pipe 103; the middle part of the partition plate 101 is opened with the upper opening first annular groove 10101; the partition plate 101 is opened with the second annular groove 10102; the second annular groove 10102 is coaxial with the first annular groove 10101, and the diameter of the second annular groove 10102 is greater than that of the first annular groove 10101; the lower parts of the two air guide pipes 102 are commonly communicated with the second annular groove 10102; the second cooling pipe 105 is installed in the second annular groove 10102; the second cooling pipe 105 is close to the side wall close to the axis of the second annular groove 10102; a ring of spray heads 104 is installed at the lower part of the partition plate 101; the upper parts of each of the spray heads 104 are commonly communicated with the first annular groove 10101; the lower part of the second annular groove 10102 is annularly arrayed with a plurality of round holes 10103; each of the round holes 10103 is provided with one first filter 106; the partition plate 101 is opened with the third annular groove 10104; the third annular groove 10104 is coaxial with the second annular groove 10102, and the diameter of the third annular groove 10104 is smaller than that of the first annular groove 10101; the third cooling pipe 107 is installed in the third annular groove 10104; the third cooling pipe 107 is close to the side wall away from the axis of the second annular groove 10102.

[0039] The upper part of the partition plate 101 is provided with a bowl-shaped groove for guiding the ammonia water to the middle part.

[0040] The top of the air guide pipe 102 is sealed, and a plurality of air holes are formed in the upper part of the outer ring surface of the air guide pipe 102 to prevent liquid drops from falling into the air guide pipe 102.

[0041] According to Figure 2 and Figures 7-8 , the anti-fouling unit includes a power assembly 201, a gear 202, an inner tooth ring 203, a first connecting rod 204, a scraper 205, and a roller shaft 206; the right part of the partition plate 101 is provided with a fixing groove 10105; the power assembly 201 is installed in the fixing groove 10105; the power assembly 201 is a servo motor; the output shaft of the power assembly 201 is fixedly connected with the gear 202; the upper part of the partition plate 101 is rotatably connected with the inner tooth ring 203; the right part of the inner tooth ring 203 is engaged with the gear 202; the left part and the right part of the inner tooth ring 203 are each bolted with a first connecting rod 204; the two first connecting rods 204 are each welded with a scraper 205; each scraper 205 is located in the first annular groove 10101; each scraper 205 is rotatably connected with a roller shaft 206 on the left part and the right part; and each roller shaft 206 is in rolling connection with the first annular groove 10101.

[0042] According to Figure 2 and Figure 9 , the pump gas unit includes a disc 301, an air extraction cover 302, a blower 303, a main gas pipe 304, and a branch gas pipe 305; the inner surface of the upper part of the absorption tank 2 is connected with the disc 301; the disc 301 is provided with a plurality of leakage grooves 30101 in an annular array; the middle part of the disc 301 is fixedly connected with the air extraction cover 302; the air extraction cover 302 is connected with the water filtering unit; a plurality of air holes are formed in the sidewall of the air extraction cover 302; the air extraction cover 302 is installed with the blower 303; the lower part of the air extraction cover 302 is communicated with the main gas pipe 304; the lower part of the main gas pipe 304 is communicated with a plurality of branch gas pipes 305; and the bottom of each branch gas pipe 305 is lower than the bottom of the cylindrical first cooling pipe 103.

[0043] A ring-shaped wall is arranged at the edge of the upper surface of the disc 301 to prevent the squeezed water from flowing down from the edge of the disc 301.

[0044] The air holes in the air extraction cover 302 are inclined downward to prevent water from entering the air extraction cover 302 when the water is squeezed.

[0045] According to Figure 2 and Figures 10-11 , the anti-fouling unit includes a power assembly 201, a gear 202, an inner tooth ring 203, a first connecting rod 204, a scraper 205, and a roller shaft 206; the right part of the partition plate 101 is provided with a fixing groove 10105; the power assembly 201 is installed in the fixing groove 10105; the power assembly 201 is a servo motor; the output shaft of the power assembly 201 is fixedly connected with the gear 202; the upper part of the partition plate 101 is rotatably connected with the inner tooth ring 203; the right part of the inner tooth ring 203 is engaged with the gear 202; the left part and the right part of the inner tooth ring 203 are each bolted with a first connecting rod 204; the two first connecting rods 204 are each welded with a scraper 205; each scraper 205 is located in the first annular groove 10101; each scraper 205 is rotatably connected with a roller shaft 206 on the left part and the right part; and each roller shaft 206 is in rolling connection with the first annular groove 10101.As shown, the water filtering unit comprises an electric actuator 401, a second connecting rod 402, a supporting rod 403 and a circular ring 404, and a second filter 405; the upper part of the absorption tank 2 is provided with two electric actuators 401; the electric actuator 401 is an electric push rod; the telescopic parts of the two electric actuators 401 are connected with the second connecting rod 402; the second connecting rod 402 is fixed with two supporting rods 403; the two supporting rods 403 are located between the two electric actuators 401; the lower parts of the two supporting rods 403 are welded with the circular ring 404; the inner diameter of the circular ring 404 is larger than the diameter of the upper part of the air extraction cover 302; the outer surface of the air extraction cover 302 is movably connected with the second filter 405; the upper part of the second filter 405 is in contact with the circular ring 404.

[0046] The second filter 405 is a deformable water-absorbing cotton.

[0047] Working principle:

[0048] Spraying stage:

[0049] Referring to the drawings, wherein Figures 1 to 9 The specific implementation process is as follows:

[0050] First, fix the ammonia water absorption tower in the refined ammonia water workshop, lead the ammonia water of the refined regeneration system out through the conduit, then connect the ammonia water into the water conveying pipe 3, and then lead the ammonia water into the absorption tank 2. Since the temperature of the ammonia water is high at this time, the solubility of ammonia gas in the ammonia water decreases, and the ammonia gas escapes from the ammonia water and gathers in the upper part of the absorption tank 2. At this time, the ammonia water is located above the partition plate 101. Then control to open each spray head 104. Each spray head 104 sprays the pressurized ammonia water below the partition plate 101. The ammonia water sprayed by each spray head 104 forms an inverted bowl-shaped water curtain below the partition plate 101, and the lower part of the sprayed bowl-shaped water curtain is blocked by the inner wall of the absorption tank 2. Finally, the ammonia water collects at the bottom of the absorption tank 2. At this time, first close the drain pipe 4, and let the liquid level of the ammonia water rise until it rises above the lower pipe opening position of the air branch pipe 305. Then open the drain pipe 4, and make the water outlet speed of the drain pipe 4 consistent with the water inlet speed of the water conveying pipe 3, so as to ensure that the liquid level of the ammonia water below the partition plate 101 remains unchanged, and ensure the continuous cooling process of the ammonia water.

[0051] When the ammonia water is located above the partition plate 101, the second cooling pipe 105 and the third cooling pipe 107 are controlled at the same time to cool and lower the temperature of the ammonia water entering the first annular groove 10101. Then, the initially cooled ammonia water is sprayed out through the spray head 104, and the ammonia water becomes small droplets, which facilitates the secondary cooling of the ammonia water. The first cooling pipe 103 cools the ammonia water below the partition plate 101, and at the same time, the first cooling pipe 103 also cools the space below the partition plate 101, so that the droplets of the ammonia water sprayed by the spray head 104 are rapidly cooled.

[0052] As the ammonia water cooling process proceeds, the first annular groove 10101 and the nozzle 104, as the main components connecting the upper and lower parts of the partition plate 101, allow the ammonia water to flow within them. Impurities in the ammonia water also flow within the first annular groove 10101, adhering to its sidewalls and affecting the flow rate. At this point, the power assembly 201 is activated, causing its output shaft to rotate. This rotation synchronously drives the gear 202 to rotate the internal gear ring 203. The internal gear ring 203, through the first connecting rod 204, drives two scrapers 205 to rotate. Each scraper 205 then drives two rollers 206 to rotate. The rollers 206 revolve around the central axis of the internal gear ring 203. Because the scrapers 205... Located within the first annular groove 10101, each roller 206 contacts the side wall of the first annular groove 10101. Therefore, when the roller 206 revolves, it rolls relative to the side wall of the first annular groove 10101. At this time, the roller 206 rotates on its own axis, and the rotation and revolution of the roller 206 occur simultaneously. During the rotation of the roller 206, it contacts the impurities on the side wall of the first annular groove 10101 and separates the impurities from the side wall of the first annular groove 10101, preventing the impurities from accumulating on the side wall of the first annular groove 10101. At the same time, the scraper 205 is hollowed out in the middle to reduce the water pressure of the scraper 205 during rotation, and the bottom of the scraper 205 sweeps away the large amount of impurities accumulated at the nozzle 104, preventing the nozzle 104 from being blocked.

[0053] Pumping stage:

[0054] See the attached diagram, in which Figures 9 to 11 The specific implementation process shown is as follows:

[0055] Because the ammonia water newly injected into absorption tank 2 is at a high temperature, the ammonia gas escapes and accumulates at the top of absorption tank 2. At this time, the ammonia water at the bottom of absorption tank 2 has been cooled, and the solubility of ammonia gas in the ammonia water has greatly increased. Therefore, the blower 303 is started, and the blower 303 draws the ammonia gas from the top of absorption tank 2 into the exhaust hood 302. Then, it is introduced into the ammonia water below through the main air pipe 304 and each branch air pipe 305. Since the lower end of each branch air pipe 305 is below the liquid surface of the ammonia water, the ammonia gas exiting from the lower end of each branch air pipe 305 directly enters the ammonia water, increasing the contact area with the ammonia water and making the absorption of ammonia water more complete. Some of the ammonia gas that has not been absorbed escapes to the surface of the liquid. The ammonia gas has a lower density and floats upward. Then, during the upward floating process, the ammonia gas comes into contact with the inverted bowl-shaped water curtain of ammonia water, increasing the surface area of ​​the ammonia water droplets. At this time, the ammonia water has also undergone initial cooling. The solubility of ammonia also increases, so the rising ammonia dissolves fully in the ammonia water curtain. Then, as air is continuously supplied to the area below the partition plate 101, to avoid excessive air pressure below the partition plate 101, the air below the partition plate 101 enters the second annular groove 10102 through the round hole 10103 with the first filter element 106. The first filter element 106 filters out the water. Since the second annular groove 10102 is equipped with a second cooling pipe 105, the air is cooled down by the second cooling pipe 105 after entering the second annular groove 10102. Then, the air in the second annular groove 10102 is discharged back into the area above the partition plate 101 through two air guide pipes 102. At this time, the position of the air inlet at the top of the air guide pipe 102 is higher than the liquid level of the ammonia water above the partition plate 101, so the ammonia water above the partition plate 101 will not enter the air guide pipe 102.

[0056] During the downward transport of ammonia, the upper part of the absorption tank 2 contains water vapor in addition to ammonia. This water vapor, carried by the ammonia, enters the ammonia solution below, easily crowding out the ammonia and reducing the contact area between the ammonia and the ammonia solution, thus decreasing the efficiency of ammonia redissolving. Therefore, a second filter element 405 is added outside the extraction hood 302. The second filter element 405 absorbs the moisture in the air above the absorption tank 2, while the ammonia enters the extraction hood 302 through the second filter element 405. Since the ammonia solution in the upper part of the absorption tank 2 is at a higher temperature, the air above the absorption tank 2 also contains more moisture. After the ammonia absorption tower has been operating for a period of time, the moisture adsorbed in the second filter element 405 affects the air filtration efficiency. At this point, two electric actuators 401 are activated and retract. The synchronous second connecting rod 402 drives the two support rods 403 to move downwards. The two support rods 403 drive the ring 404 to move downwards. The ring 404 compresses the second filter element 405, causing the water in the second filter element 405 to be squeezed out. The squeezed-out water drips back into the ammonia water in the upper part of the absorption tank 2 along the trough 30101. The annular wall on the upper edge of the disc 301 effectively prevents the water squeezed out of the second filter element 405 from flowing down from the edge of the disc 301, so that the water enters the air guide pipe 102 and affects the internal air circulation. In addition, the air holes on the suction hood 302 are inclined downwards. Therefore, when squeezing water out of the second filter element 405, the water squeezed out of the second filter element 405 cannot enter the suction hood 302 through the downward inclined holes.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An ammonia water absorption tower with cooling function, comprising supports (1), an absorption tank (2), a water supply pipe (3), and a drain pipe (4); the four supports (1) are arranged in a ring array; the absorption tank (2) is fixedly connected to the upper part of the four supports (1); the water supply pipe (3) is connected to the upper part of the absorption tank (2); the drain pipe (4) is connected to the lower part of the absorption tank (2); Its features are, It also includes a spray unit, an anti-scaling unit, a pumping unit, and a water filtration unit; the spray unit is connected inside the absorption tank (2); the anti-scaling unit is connected to the upper part of the spray unit to prevent scale deposition; the pumping unit is connected inside the absorption tank (2); the pumping unit is connected to the spray unit; the spray unit cools the ammonia water in the upper part of the absorption tank (2) and sprays it downwards in an inverted bowl shape, the ammonia water accumulates in the lower part of the absorption tank (2) and continues to cool, the pumping unit blows the ammonia gas in the upper part of the absorption tank (2) downwards, the ammonia gas enters the ammonia water in the lower part of the absorption tank (2), and the overflowing ammonia gas is absorbed again through the sprayed ammonia water; the absorption tank (2) is connected to a water filtration unit; the lower part of the water filtration unit is connected to the pumping unit; The spray unit includes a partition plate (101), an air guide pipe (102), a first cooling pipe (103), a nozzle (104), a second cooling pipe (105), a first filter element (106), and a third cooling pipe (107); A partition plate (101) is fixedly connected to the middle of the inner surface of the absorption tank (2); the partition plate (101) is connected to the anti-scaling unit; a gas guide pipe (102) is connected to the left and right sides of the partition plate (101); a first cooling pipe (103) is connected to the lower part of the inner surface of the absorption tank (2); a first annular groove (10101) with an upper opening is opened in the middle of the partition plate (101); a second annular groove (10102) is opened in the partition plate (101); the second annular groove (10102) is coaxial with the first annular groove (10101), and the diameter of the second annular groove (10102) is larger than the diameter of the first annular groove (10101); the lower parts of the two gas guide pipes (102) are connected to the second annular groove (10102); a second cooling pipe (105) is installed in the second annular groove (10102); the second cooling pipe (105) is close to the second annular groove. On the side wall of the axial groove (10102); a ring of nozzles (104) is installed at the lower part of the partition plate (101); the upper part of each nozzle (104) is connected to the first annular groove (10101); a number of circular holes (10103) are arranged in a ring array at the lower part of the second annular groove (10102); each circular hole (10103) is provided with a first filter element (106) for filtering out water; a third annular groove (10104) is opened in the partition plate (101); the third annular groove (10104) is coaxial with the second annular groove (10102), and the diameter of the third annular groove (10104) is smaller than the diameter of the first annular groove (10101); a third cooling pipe (107) is installed in the third annular groove (10104); the third cooling pipe (107) is attached to the side wall away from the axis of the second annular groove (10102).

2. The ammonia water absorption tower with cooling function according to claim 1, characterized in that, The upper part of the partition plate (101) has a bowl-shaped groove.

3. An ammonia water absorption tower with cooling function according to claim 1, characterized in that, The top of the air duct (102) is sealed, and several air holes are opened on the upper part of the outer ring surface of the air duct (102).

4. An ammonia water absorption tower with cooling function according to claim 1, characterized in that, The anti-scaling unit includes a power assembly (201), a gear (202), an internal gear ring (203), a first connecting rod (204), a scraper (205), and a roller (206); A fixing groove (10105) is opened on the right side of the partition plate (101); a power component (201) is installed in the fixing groove (10105); a gear (202) is fixedly connected to the output shaft of the power component (201); an internal gear ring (203) is rotatably connected to the upper part of the partition plate (101); the right side of the internal gear ring (203) meshes with the gear (202); a first connecting rod (204) is fixedly connected to the left and right sides of the internal gear ring (203); a scraper (205) is fixedly connected to each of the two first connecting rods (204); each scraper (205) is located in the first annular groove (10101); a roller (206) is rotatably connected to the left and right sides of each scraper (205); each roller (206) is rollingly connected to the first annular groove (10101).

5. An ammonia water absorption tower with cooling function according to claim 4, characterized in that, The air pumping unit includes a disc (301), an air extraction hood (302), a blower (303), a main air pipe (304), and a branch air pipe (305); A disc (301) is connected to the upper part of the inner surface of the absorption tank (2); a number of perforated grooves (30101) are arranged in a ring on the disc (301); an exhaust hood (302) is fixed to the middle of the disc (301); the exhaust hood (302) is connected to the water filter unit; a number of ventilation holes are opened on the side wall of the exhaust hood (302); a blower (303) is installed inside the exhaust hood (302); a main air pipe (304) is connected to the lower part of the exhaust hood (302); a number of branch air pipes (305) are connected to the lower part of the main air pipe (304); the bottom of each branch air pipe (305) is lower than the bottom of the first cooling pipe (103) wound into a column.

6. An ammonia water absorption tower with cooling function according to claim 5, characterized in that, A ring wall is provided at the edge of the upper surface of the disc (301).

7. An ammonia water absorption tower with cooling function according to claim 5, characterized in that, The ventilation holes on the fume extractor (302) are angled downwards.

8. An ammonia water absorption tower with cooling function according to claim 5, characterized in that, The water filtration unit includes an electric actuator (401), a second connecting rod (402), a support rod (403), a ring (404), and a second filter element (405); The absorption tank (2) is equipped with two electric actuators (401) on the upper part; the telescopic parts of the two electric actuators (401) are connected to a second connecting rod (402); two support rods (403) are fixed on the second connecting rod (402); the two support rods (403) are located between the two electric actuators (401); the lower part of the two support rods (403) is fixed to a ring (404); the inner diameter of the ring (404) is larger than the upper diameter of the exhaust hood (302); a second filter element (405) is movably connected to the outer ring surface of the exhaust hood (302); the upper part of the second filter element (405) is in contact with the ring (404).

9. An ammonia absorption tower with cooling function according to claim 8, characterized in that, The second filter element (405) is deformable absorbent cotton.

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