Ammonia refining tower with circulating spraying structure

Abstract

The utility model discloses an ammonia refining tower with a circulating spraying structure, and relates to the technical field of chemical separation. The bottom of a first ring pipe is annularly distributed and connected with a plurality of first atomizing nozzles in a penetrating manner; the second ring pipe is arranged above the first ring pipe, and the diameter of the second ring pipe is smaller than that of the first ring pipe; the bottom of the second annular pipe is annularly distributed and connected with a plurality of second atomizing nozzles in a penetrating mode. The adding mechanism is arranged on the front side of the annular wall of the spray tower; the stirring mechanism is arranged in the spraying pipe; the circulating mechanism is connected with two ends of the distributive pipe respectively; the ammonia gas is uniformly scattered and sprayed out, so that poor spraying effect and waste of spraying liquid caused by excessive concentration of the ammonia gas are avoided; the multi-stage atomizing nozzles are used for spraying layer by layer, and ammonia gas is uniformly scattered and is in full contact with spraying liquid, so that the gas decomposition efficiency is improved; and through heating evaporation and alternate concentration, the spraying liquid can be recycled, so that the resource waste is reduced, the operation cost is reduced, and the operation efficiency and the stability are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical separation technical field, concretely relates to a kind of ammonia refining tower with circulating spray structure. BACKGROUND

[0002] Current traditional ammonia refining tower (such as packing tower, plate tower) there is mass transfer efficiency low, energy consumption is high, operation flexibility is poor and is prone to blockage etc., difficult to meet the demand of high-purity ammonia production.For solve these deficiencies, the introduction of circulating spray structure is particularly necessary.By atomizing liquid to increase gas-liquid contact area, circulating spray significantly improves mass transfer efficiency, while reducing energy consumption and plugging risk, therefore, present and propose a kind of ammonia refining tower with circulating spray structure. SUMMARY

[0003] The utility model discloses to the defects and deficiencies of prior art, provide a kind of ammonia refining tower with circulating spray structure, ammonia is evenly scattered and sprayed, avoid ammonia too concentrated and lead to bad spray effect, spray liquid is wasted;By multistage atomizing nozzle layer by layer spray, ammonia is evenly scattered and fully contacts spray liquid, improves gas decomposition efficiency;By heating evaporation and alternate concentration, spray liquid is recycled, reduces resource waste, reduces operating cost, improves operating efficiency and stability.

[0004] To achieve the above object, the utility model adopts the following technical scheme it contains spray tower, gas outlet pipe and air inlet pipe;The upper end of spray tower is connected with gas outlet pipe;The right side of the bottom of the ring wall of spray tower is connected with air inlet pipe;

[0005] It also contains:

[0006] No. 1 annular pipe, the bottom of the No. 1 annular pipe is annularly distributed and connected with a plurality of No. 1 atomizing nozzles;The right end of the No. 1 annular pipe is connected with a No. 1 water inlet pipe;The No. 1 water inlet pipe is arranged on the spray tower;

[0007] No. 2 annular pipe, the No. 2 annular pipe is arranged in the spray tower, the No. 2 annular pipe is arranged above the No. 1 annular pipe, and the diameter of the No. 2 annular pipe is smaller than that of the No. 1 annular pipe;The bottom of the No. 2 annular pipe is annularly distributed and connected with a plurality of No. 2 atomizing nozzles;The right end of the No. 2 annular pipe is connected with a No. 2 water inlet pipe;The No. 2 water inlet pipe is arranged on the spray tower;

[0008] Connecting pipe, the connecting pipe is connected with the right end of the No. 1 water inlet pipe and the No. 2 water inlet pipe;The bottom of the connecting pipe is connected with a feed pipe, and the feed pipe is connected with a spray liquid source;

[0009] Adding mechanism, the adding mechanism is arranged on the front side of the ring wall of the spray tower;

[0010] The stirring mechanism is arranged in the spray pipe.

[0011] The water pumping pipe is connected with the bottom of the spray tower.

[0012] The circulating mechanism is two in number and is connected with two ends of the water distribution pipe respectively.

[0013] The circulating pipe is connected with the upper end of the connecting pipe, and the other end of the circulating pipe is connected with the two circulating mechanisms respectively.

[0014] Preferably, the third atomizing nozzle is arranged above the second ring pipe, and the third water inlet pipe is connected with the third atomizing nozzle; the third water inlet pipe is arranged in the spray tower.

[0015] Preferably, the third ring pipe is connected with the air inlet pipe, the third ring pipe is arranged at the bottom of the spray tower and below the first ring pipe, the bottom of the third ring pipe is annularly distributed and connected with a plurality of air guide pipes, and the right end of the connecting pipe and the third water inlet pipe is connected.

[0016] Preferably, the adding mechanism comprises a tank, a first water pump, a fourth water inlet pipe and a fourth atomizing nozzle; the tank is fixed to the front side of the ring wall of the spray tower, the first water pump is arranged above the tank, and the first water pump is connected with an external power source; the water inlet end of the first water pump is connected with the tank through a pipe, the water outlet pipe of the first water pump is connected with the fourth water inlet pipe, the fourth water inlet pipe is arranged in the spray pipe, and the rear end of the fourth water inlet pipe is connected with the fourth atomizing nozzle.

[0017] Preferably, the stirring mechanism comprises a stirring rod, a rotating shaft and a stirring motor; the stirring rod is annularly distributed and rotatably connected with the inner bottom plate of the spray tower through the rotating shaft; the stirring motor is fixed to the ring wall of the spray tower through a support, and the stirring motor is connected with an external power source; the output shaft of the stirring motor is connected with the rotating shaft through a shaft and a bevel gear pair.

[0018] Preferably, the circulating mechanism comprises:

[0019] The box is arranged on the right side of the spray tower; the valve is arranged on the cover of the box, and the heating device is arranged in the box.

[0020] The second water pump is fixed to the left side wall of the box; the second water pump is connected with an external power source; the water inlet end of the second water pump is connected with the water distribution pipe; the water outlet end of the second water pump is connected with the drain pipe, and the drain pipe is arranged in the side wall of the box.

[0021] The filter screen is fixed in the connecting frame, the bottom of the connecting frame is arranged on the frame, and the frame is fixed in the box body;

[0022] The third water pump is fixed on the right side wall of the box body, the third water pump is connected with the external power supply, the water inlet end of the third water pump is connected with the bottom of the box body through a pipe, and the water outlet end of the third water pump is connected with the other end of the circulating pipe.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] 1. Ammonia is uniformly dispersed and sprayed, avoiding too much concentration of ammonia, which leads to poor spraying effect and waste of spraying liquid;

[0025] 2. The ammonia is uniformly dispersed and fully contacts the spraying liquid through multi-stage atomizing nozzles, improving the gas decomposition efficiency;

[0026] 3. The spraying liquid can be recycled through heating evaporation and alternating concentration, reducing resource waste, reducing operation cost, improving operation efficiency and stability. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is the southwest isometric view of the utility model.

[0028] Figure 2 It is the southeast isometric view of the utility model.

[0029] Figure 3 It is the sectional view of the spraying tower in the utility model.

[0030] Figure 4 It is the structure schematic view of the adding mechanism in the utility model.

[0031] Figure 5 It is the structure schematic view of the drain pipe, filter screen, connecting frame and frame in the utility model.

[0032] BRIEF DESCRIPTION OF DRAWINGS:

[0033] Spray tower 1, air outlet pipe 2, air inlet pipe 3, No. 1 ring pipe 4, No. 1 atomizing nozzle 5, No. 1 water inlet pipe 6, No. 2 ring pipe 7, No. 2 atomizing nozzle 8, No. 2 water inlet pipe 9, No. 3 atomizing nozzle 10, No. 3 water inlet pipe 11, No. 3 ring pipe 12, air guide pipe 13, connecting pipe 14, feed pipe 15, adding mechanism 16, tank body 16-1, No. 1 water pump 16-2, No. 4 water inlet pipe 16-3, No. 4 atomizing nozzle 16-4, stirring mechanism 17, stirring rod 17-1, rotating shaft 17-2, stirring motor 17-3, water suction pipe 18, water distribution pipe 19, circulating mechanism 20, box body 20-1, No. 2 water pump 20-2, water outlet pipe 20-3, filter screen 20-4, connecting frame 20-5, frame 20-6, No. 3 water pump 20-7, circulating pipe 21. DETAILED DESCRIPTION

[0034] The technical solutions in the utility model will be described below in connection with the drawings. The preferred embodiments described in the description are only examples, and all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0035] The specific embodiment adopts the following technical solutions:

[0036] Please refer to Figures 1-5 The embodiment comprises a spray tower 1, an air outlet pipe 2 and an air inlet pipe 3. The upper end of the spray tower 1 is connected with the air outlet pipe 2. The right side of the bottom of the ring wall of the spray tower 1 is connected with the air inlet pipe 3.

[0037] It also comprises:

[0038] A No. 1 ring pipe 4 is arranged in the spray tower 1. A plurality of No. 1 atomizing nozzles 5 are arranged in the bottom of the No. 1 ring pipe 4. The right end of the No. 1 ring pipe 4 is connected with a No. 1 water inlet pipe 6. The No. 1 water inlet pipe 6 is arranged on the spray tower 1.

[0039] A No. 2 ring pipe 7 is arranged in the spray tower 1. The No. 2 ring pipe 7 is arranged above the No. 1 ring pipe 4 and has a smaller diameter than the No. 1 ring pipe 4. A plurality of No. 2 atomizing nozzles 8 are arranged in the bottom of the No. 2 ring pipe 7. The right end of the No. 2 ring pipe 7 is connected with a No. 2 water inlet pipe 9. The No. 2 water inlet pipe 9 is arranged on the spray tower 1.

[0040] A No. 3 atomizing nozzle 10 is arranged above the No. 2 ring pipe 7. The No. 3 atomizing nozzle 10 is connected with a No. 3 water inlet pipe 11. The No. 3 water inlet pipe 11 is arranged on the spray tower 1.

[0041] The third annular pipe 12 is connected with the air inlet pipe 3, and is arranged at the bottom of the spray tower 1 and below the first annular pipe 4; the bottom of the third annular pipe 12 is annularly distributed and connected with a plurality of air guide pipes 13;

[0042] The connecting pipe 14 is connected with the right ends of the first water inlet pipe 6, the second water inlet pipe 9 and the third water inlet pipe 11; the bottom of the connecting pipe 14 is connected with the feed pipe 15, and the feed pipe 15 is connected with a spray liquid source;

[0043] The adding mechanism 16 is arranged on the front side of the annular wall of the spray tower 1; the adding mechanism 16 comprises a tank 16-1, a first water pump 16-2, a fourth water inlet pipe 16-3 and a fourth atomizing nozzle 16-4; the tank 16-1 is fixed on the front side of the annular wall of the spray tower 1, the first water pump 16-2 is arranged above the tank 16-1, the first water pump 16-2 is connected with an external power supply, and the specific type of the first water pump 16-2 is directly purchased, installed and used according to actual use requirements; the water inlet end of the first water pump 16-2 is connected with the tank 16-1 through a pipe, the water outlet pipe of the first water pump 16-2 is connected with the fourth water inlet pipe 16-3, the fourth water inlet pipe 16-3 is arranged on the spray pipe, and the rear end of the fourth water inlet pipe 16-3 is connected with the fourth atomizing nozzle 16-4;

[0044] The stirring mechanism 17 is arranged in the spray pipe; the stirring mechanism 17 comprises a stirring rod 17-1, a rotating shaft 17-2 and a stirring motor 17-3; the number of the stirring rods 17-1 is several, and each stirring rod 17-1 is annularly distributed and screwed on the inner bottom plate of the spray tower 1 through the rotating shaft 17-2; the stirring motor 17-3 is fixed on the annular wall of the spray tower 1 through a support, the stirring motor 17-3 is connected with an external power supply, and the specific type of the stirring motor 17-3 is directly purchased, installed and used according to actual use requirements; the output shaft of the stirring motor 17-3 is connected with the rotating shaft 17-2 through a shaft and a bevel gear pair;

[0045] The water pumping pipe 18 is connected with the bottom of the spray tower 1; the other end of the water pumping pipe 18 is connected with a water distribution pipe 19, and the water distribution pipe 19 has a "C" shape structure;

[0046] The circulating mechanism 20 is two in number and connected with the two ends of the water distribution pipe 19 respectively; each of the circulating mechanisms 20 comprises:

[0047] The box 20-1 is arranged on the right side of the spray tower 1; a gas valve is arranged on the cover of the box 20-1, and a heating device is arranged in the box 20-1;

[0048] The second water pump 20-2 is fixed on the left side wall of the box 20-1 by bolts, and is connected with an external power source; the specific type of the second water pump 20-2 is directly purchased from the market according to actual use requirements; the water inlet end of the second water pump 20-2 is connected with the water distribution pipe 19; and the water outlet end of the second water pump 20-2 is connected with a drain pipe 20-3 which is arranged on the side wall of the box 20-1;

[0049] The filter screen 20-4 is arranged in the box 20-1, and the outlet of the drain pipe 20-3 is arranged above the filter screen 20-4; the filter screen 20-4 is fixed in a connecting frame 20-5, and the bottom of the connecting frame 20-5 is arranged on a frame 20-6 which is fixed in the box 20-1;

[0050] The third water pump 20-7 is fixed on the right side wall of the box 20-1, and is connected with an external power source; the specific type of the third water pump 20-7 is directly purchased from the market according to actual use requirements; and the water inlet end of the third water pump 20-7 is connected with the bottom of the box 20-1 through a pipe;

[0051] The circulating pipe 21 is connected with the upper end of the connecting pipe 14, and the other end of the circulating pipe 21 is connected with the water outlet ends of the two third water pumps 20-7.

[0052] When the utility model is used, a settling agent is added into the tank 16-1, the stirring motor 17-3 is started to rotate the stirring rod 17-1, the first water pump 16-2 is started to pump out the settling agent and spray the settling agent on the bottom of the spray tower 1 through the fourth atomizing nozzle 16-4; the spray liquid is introduced from the feed pipe 15, and is sprayed out through the first atomizing nozzle 5, the second atomizing nozzle 8 and the third atomizing nozzle 10 in sequence through the connecting pipe 14, the first water inlet pipe 6, the second water inlet pipe 9 and the third water inlet pipe 11;

[0053] Air is introduced into the air inlet pipe 3, and is uniformly dispersed and sprayed out under the action of the air guide pipe 13, so that the first atomizing nozzle 5, the second atomizing nozzle 8 and the third atomizing nozzle 10 are distributed in layers to fully spray the ammonia gas; and after the ammonia gas is decomposed, clean gas is discharged through the air outlet pipe 2;

[0054] The reacted spray liquid falls at the bottom of the spray tower 1, is decomposed by a settling agent, so that the reacted spray liquid forms a precipitate, the second water pump 20-2 is started alternately to pump out the liquid at the bottom of the spray tower 1, is sprayed on the filter screen 20-4 through the drain pipe 20-3, so that the precipitate is blocked, the heating device in the box 20-1 is started to heat and evaporate the liquid in the box 20-1, so that the liquid in the box 20-1 is concentrated, the required pH value of the spray is met, at this time, the second water pump 20-2 is closed, the third water pump 20-7 and another second water pump 20-2 are started, the liquid in the box 20-1 is pumped out into the circulating pipe 21, and the two boxes 20-1 are alternately concentrated, cooperating with the feed pipe 15, so that the spray liquid is continuously used in circulation.

[0055] Compared with the prior art, the utility model has the advantages that:

[0056] 1、Set up the third ring pipe 12, so that the ammonia gas is evenly scattered and sprayed, avoid that the ammonia gas is too concentrated and causes the poor spraying effect and the waste of the spray liquid;

[0057] 2、The first atomizing nozzle 5, the second atomizing nozzle 8 and the third atomizing nozzle 10 are distributed layer by layer, and the ammonia gas is evenly scattered and fully contacts the spray liquid through multistage atomizing nozzles, so that the gas decomposition efficiency is improved;

[0058] 3、Set up the circulating mechanism 20, through heating and evaporation and alternate concentration, the spray liquid can be recycled, resource waste is reduced, and operation cost is reduced;

[0059] 4、Through the automatic switching of the second water pump 20-2, the third water pump 20-7 and the heating device, the system can realize continuous operation, and the operation efficiency and stability are improved.

[0060] For those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, and equivalent replacement of part of technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. An ammonia refining tower with a circulating spray structure, comprising a spray tower (1), an air outlet pipe (2) and an air inlet pipe (3); the upper end of the spray tower (1) is connected with the air outlet pipe (2); the right side of the bottom of the ring wall of the spray tower (1) is connected with the air inlet pipe (3); characterized in that It also comprises: a No. 1 ring pipe (4), which is arranged in the spray tower (1), a plurality of No. 1 atomizing nozzles (5) are arranged in the bottom of the No. 1 ring pipe (4) in a ring shape; the right end of the No. 1 ring pipe (4) is connected with a No. 1 water inlet pipe (6); the No. 1 water inlet pipe (6) is arranged on the spray tower (1); a No. 2 ring pipe (7), which is arranged in the spray tower (1), the No. 2 ring pipe (7) is arranged above the No. 1 ring pipe (4), and the diameter of the No. 2 ring pipe (7) is smaller than that of the No. 1 ring pipe (4); a plurality of No. 2 atomizing nozzles (8) are arranged in the bottom of the No. 2 ring pipe (7) in a ring shape; the right end of the No. 2 ring pipe (7) is connected with a No. 2 water inlet pipe (9); the No. 2 water inlet pipe (9) is arranged on the spray tower (1); a connecting pipe (14), which is connected with the right ends of the No. 1 water inlet pipe (6) and the No. 2 water inlet pipe (9); the bottom of the connecting pipe (14) is connected with a feed pipe (15), and the feed pipe (15) is connected with a spray liquid source; an adding mechanism (16), which is arranged on the front side of the ring wall of the spray tower (1); a stirring mechanism (17), which is arranged in the spray pipe; a water suction pipe (18), which is connected with the bottom of the spray tower (1); the other end of the water suction pipe (18) is connected with a water distribution pipe (19), and the water distribution pipe (19) has a "C" shape structure; two circulating mechanisms (20), which are respectively connected with the two ends of the water distribution pipe (19); a circulating pipe (21), which is connected with the upper end of the connecting pipe (14), and the other end of the circulating pipe (21) is respectively connected with the two circulating mechanisms (20).

2. The ammonia rectification tower with a circulating spray structure according to claim 1, characterized in that: a No. 3 atomizing nozzle (10) is arranged above the No. 2 ring pipe (7), and a No. 3 water inlet pipe (11) is connected with the No. 3 atomizing nozzle (10); the No. 3 water inlet pipe (11) is arranged on the spray tower (1).

3. The ammonia rectification tower with a circulating spraying structure according to claim 1, characterized in that: a No. 3 ring pipe (12) is connected with the air inlet pipe (3), the No. 3 ring pipe (12) is arranged in the bottom of the spray tower (1) and below the No. 1 ring pipe (4); a plurality of air guide pipes (13) are arranged in the bottom of the No. 3 ring pipe (12) in a ring shape; the right ends of the connecting pipe (14) and the No. 3 water inlet pipe (11) are connected.

4. The ammonia rectification tower with a circulating spraying structure according to claim 1, characterized in that: The adding mechanism (16) comprises a tank (16-1), a first water pump (16-2), a fourth water inlet pipe (16-3) and a fourth atomizing nozzle (16-4); the tank (16-1) is fixed to the front side of the ring wall of the spray tower (1), the first water pump (16-2) is arranged above the tank (16-1), and the first water pump (16-2) is connected with an external power source; the water inlet end of the first water pump (16-2) is connected with the tank (16-1) through a pipe, the water outlet pipe of the first water pump (16-2) is connected with the fourth water inlet pipe (16-3), the fourth water inlet pipe (16-3) is arranged on the spray pipe, and the rear end of the fourth water inlet pipe (16-3) is connected with the fourth atomizing nozzle (16-4).

5. The ammonia rectification tower with a circulating spray structure according to claim 1, characterized in that: The stirring mechanism (17) comprises stirring rods (17-1), rotating shafts (17-2) and stirring motors (17-3); the number of the stirring rods (17-1) is several, and the stirring rods (17-1) are annularly distributed and rotatably connected to the inner bottom plate of the spray tower (1) through the rotating shafts (17-2); the stirring motor (17-3) is fixed to the ring wall of the spray tower (1) through a support, the stirring motor (17-3) is connected with an external power source, and the output shaft of the stirring motor (17-3) is connected with the rotating shaft (17-2) through a shaft and a bevel gear pair.

6. The ammonia rectification tower with a circulating spray structure according to claim 1, characterized in that: The circulating mechanism (20) comprises: a box (20-1), which is arranged on the right side of the spray tower (1); a gas valve is arranged on the cover of the box (20-1), and a heating device is arranged in the box (20-1); a second water pump (20-2), which is fixed to the left side wall of the box (20-1); the second water pump (20-2) is connected with an external power source; the water inlet end of the second water pump (20-2) is connected with the water distribution pipe (19); the water outlet end of the second water pump (20-2) is connected with a drain pipe (20-3), and the drain pipe (20-3) is arranged on the side wall of the box (20-1); a filter screen (20-4), which is arranged in the box (20-1) and above the outlet of the drain pipe (20-3); the filter screen (20-4) is fixed in a connecting frame (20-5), and the bottom of the connecting frame (20-5) is arranged on a frame (20-6) fixed in the box (20-1); a third water pump (20-7), which is fixed to the right side wall of the box (20-1); the third water pump (20-7) is connected with an external power source, the water inlet end of the third water pump (20-7) is connected with the bottom of the box (20-1) through a pipe, and the water outlet end of the third water pump (20-7) is connected with the other end of the circulating pipe (21).

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