CN221286926U

CN221286926U - Stripping deamination tower

Info

Publication number: CN221286926U
Application number: CN202323139945.5U
Authority: CN
Inventors: 宁洪良; 张雷; 李占利; 汪金玲; 胡金明
Original assignee: Hebei Tian Li Hai Flavor And Fragrance Co ltd
Current assignee: Hebei Tian Li Hai Flavor And Fragrance Co ltd
Priority date: 2023-11-21
Filing date: 2023-11-21
Publication date: 2024-07-09
Anticipated expiration: 2033-11-21

Abstract

The utility model discloses a stripping deamination tower, which belongs to the technical field of ammonia recovery devices and comprises a skirt, wherein the bottom of the skirt is provided with a grounding plate, the top of the skirt is sequentially provided with a cylinder I, a cylinder II, a cylinder III, a cylinder IV, a cylinder V, a cylinder VI, a cylinder VII, a cylinder VIII and a cylinder IX, the top of the cylinder IX is provided with an upper end enclosure, and the bottom of the cylinder I is provided with a lower end enclosure; the inside of barrel II, barrel IV, barrel VI and barrel VIII all is provided with the filler, and the top of filler is provided with the distributor, and the inside of barrel III, barrel V and barrel VII all is provided with the collector. According to the utility model, ammonia in the air-released mixed gas is led to the deamination stripping tower through the pipeline, the ammonia is recycled by the stripping device, the rest of waste gas is discharged after being treated by the treatment facility, the environmental pollution is reduced, and the production cost is saved.

Description

Stripping deamination tower

Technical Field

The utility model relates to the technical field of ammonia recovery devices, in particular to a stripping deamination tower.

Background

Ammonia is a toxic gas with pungent odor, is widely applied to chemical production, and has important significance in recycling ammonia in mixed gas by emptying and inorganically discharging part of the gas besides the reacted ammonia in industrial production. The existing ammonia treatment device mostly adopts the modes of acid washing and water washing to treat the discharged ammonia gas, on one hand, the recovered liquid cannot be directly subjected to water treatment, the ammonia nitrogen content is higher, the absorbed ammonium chloride needs to be evaporated to become solid ammonium chloride, certain steam consumption is required, certain equipment is required to be put into treating the ammonium chloride, and the recovery cannot be completely and thoroughly achieved by adopting the method.

Disclosure of utility model

The utility model aims to provide a stripping deamination tower, which solves the problems that part of gas is discharged through a vent and an unorganized discharge to the atmosphere besides the reacted ammonia gas in industrial production, and the recovery of the existing ammonia gas treatment device cannot be completely and thoroughly achieved.

In order to solve the technical problems, the utility model adopts the following technical scheme:

The utility model relates to a stripping deamination tower, which comprises a skirt, wherein the bottom of the skirt is provided with a grounding plate, the top of the skirt is sequentially provided with a cylinder I, a cylinder II, a cylinder III, a cylinder IV, a cylinder V, a cylinder VI, a cylinder VII, a cylinder VIII and a cylinder IX, the top of the cylinder IX is provided with an upper end socket, and the bottom of the cylinder I is provided with a lower end socket; the inside of the cylinder II, the cylinder IV, the cylinder VI and the cylinder VIII are provided with fillers, a distributor is arranged above the fillers, and collectors are arranged inside the cylinder III, the cylinder V and the cylinder VII;

The top surface of upper head is provided with top of the tower thermometer mouth, gaseous phase pipe and top of the tower manometer mouth, be provided with back flow mouth and back flow on barrel IX's the lateral wall, be provided with inlet and feed liquor pipe on barrel VI's the left side wall and be located the top of distributor, be provided with first takeover on barrel VI's the right side wall and be located the top of distributor, be located barrel VII is inside the below of collector is provided with the distributor liquid mouth down, the distributor liquid mouth extends to in the barrel VI, be provided with the thermometer mouth in the tower on barrel IV's the lateral wall, be provided with the second takeover on barrel III's the lateral wall, be provided with reboiler export and third takeover on barrel I's the left side wall, be provided with bottom of the tower thermometer mouth and bottom of the tower manometer mouth on barrel I's the right side wall, the bottom of lower head is provided with the reboiler import.

Furthermore, grid plates are arranged on the upper side and the lower side of the filler, and supporting rings are arranged on the bottom surface of the grid plate below.

Still further, the packing is provided as pall ring packing.

Still further, the bottom surface of supporting ring is provided with a plurality of gusset, a plurality of gusset is circumference equipartition.

Still further, the reboiler inlet includes a vertical tube, an elbow, and a horizontal tube, the top surface of the vertical tube is connected to the lower head, and the elbow is connected between the vertical tube and the horizontal tube.

Still further, a support plate is provided inside the horizontal tube.

Compared with the prior art, the utility model has the beneficial technical effects that:

according to the utility model, ammonia in the air-released mixed gas is led to the deamination stripping tower through the pipeline, the ammonia is recycled by the stripping device, the rest of waste gas is discharged after being treated by the treatment facility, the environmental pollution is reduced, and the production cost is saved. The utility model can realize the complete recovery of tail gas ammonia, can recover 0.5 ton of gaseous ammonia every day, and can realize zero emission.

Drawings

The utility model is further described with reference to the following description of the drawings.

FIG. 1 is a schematic diagram of the structure of a stripping deamination column of the present utility model;

FIG. 2 is a schematic diagram of the structure of the stripping deamination column A of the present utility model;

FIG. 3 is a cross-sectional view of the stripping deamination column of the present utility model in the B-B direction;

Fig. 4 is an enlarged view at X in fig. 1.

Reference numerals illustrate: 1. a ground plate; 2. a skirt; 3. a cylinder I; 4. a cylinder II; 5. a cylinder III; 6. a cylinder IV; 7. a cylinder V; 8. a cylinder VI; 9. a cylinder VII; 10. a cylinder VIII; 11. a cylinder IX; 12. an upper end enclosure; 13. a lower end enclosure; 14. a support ring; 1401. rib plates; 15. a grid plate; 16. a filler; 17. a distributor; 18. a collector; 19. a top temperature meter port; 20. a gas phase tube; 21. a top pressure gauge port; 22. a return port; 23. a return pipe; 24. a liquid outlet of the distributor; 25. a first connection pipe; 26. a liquid inlet; 27. a liquid inlet pipe; 28. a thermometer port in the tower; 29. a second connection pipe; 30. a reboiler outlet; 31. a third connection pipe; 32. a temperature meter port at the bottom of the tower; 33. a pressure gauge port at the bottom of the tower; 34. a reboiler inlet; 3401. a vertical tube; 3402. an elbow; 3403. a horizontal tube; 35. a support plate.

Detailed Description

As shown in fig. 1-4, the stripping deamination tower comprises a skirt 2, wherein the bottom of the skirt 2 is connected with a grounding plate 1, the grounding plate 1 is connected to the ground through 16-M42 foundation bolts, the top of the skirt 2 is sequentially connected with a cylinder I3, a cylinder II4, a cylinder III5, a cylinder IV 6, a cylinder V7, a cylinder VI 8, a cylinder VII 9, a cylinder VIII 10 and a cylinder IX 11, the top of the cylinder IX 11 is welded with an upper seal head 12, and the bottom of the cylinder I3 is welded with a lower seal head 13; the inside of barrel II4, barrel IV 6, barrel VI 8 and barrel VIII 10 all is provided with filler 16, the distributor 17 is installed to the top of filler 16, barrel III5 barrel V7 and the inside of barrel VII 9 all installs collector 18.

The top surface of upper head 12 is provided with top of the tower thermometer mouth 19, gaseous phase pipe 20 and top of the tower manometer mouth 21, be provided with backward flow mouth 22 and back flow 23 on the lateral wall of barrel IX 11, be provided with inlet 26 and feed liquor pipe 27 on the left side wall of barrel VI 8 and be located the top of distributor 17, be provided with first takeover 25 on the right side wall of barrel VI 8 and be located the top of distributor 17, be located barrel VII 9 inside the below of collector 18 is provided with distributor liquid outlet 24, the distributor liquid outlet 24 extends to in the barrel VI 8, be provided with in the tower thermometer mouth 28 on the lateral wall of barrel IV 6, be provided with second takeover 29 on the lateral wall of barrel III5, be provided with reboiler export 30 and third takeover 31 on the left side wall of barrel I3, be provided with bottom of the tower thermometer mouth 32 and bottom of the tower manometer mouth 33 on the right side wall of barrel I3, the bottom of reboiler 13 is provided with import 34.

Specifically, as shown in fig. 1 and 4, taking a cylinder II4 as an example, a supporting ring 14 is connected to the inner wall of the cylinder II4, a plurality of rib plates 1401 are connected to the bottom surface of the supporting ring 14, and the rib plates 1401 are uniformly distributed circumferentially; in the embodiment, the number of the rib plates 1401 is sixteen, the grid plates 15 are arranged on the top surface of the supporting ring 14, the packing 16 is arranged on the top surface of the grid plates 15, one grid plate 15 is arranged on the top surface of the packing 16, and the distributor 17 is arranged above the grid plates 15 above; the packing 16 in this embodiment is a pall ring packing.

The reboiler inlet 34 comprises a vertical pipe 3401, an elbow 3402 and a horizontal pipe 3403, wherein the top surface of the vertical pipe 3401 is connected to the lower head 13, and the elbow 3402 is connected between the vertical pipe 3401 and the horizontal pipe 3403; the horizontal tube 3403 is internally connected with a support plate 35, the support plate 35 comprises a middle support ring, and three support rods are connected to the outer circumferential surface of the support ring.

The working process of the utility model is as follows:

Step one, the circulating cooling water of the condenser at the top of the tower is completely opened, a liquid inlet valve is opened, a feed pump is started, the ammonia water absorbed by the water is pumped to a liquid inlet 26 and a liquid inlet pipe 27, so that the ammonia water enters the deamination tower, and when the liquid level of a liquid storage tank of the tower kettle reaches about 50%, the liquid inlet valve is closed, and liquid inlet is stopped. ("tower bottom liquid storage tank" refers to the section of inner cavity from the liquid inlet to the tower bottom)

Step two, the aqueous ammonia absorbed by water is subjected to primary liquid distribution through a distributor 17 in the cylinder VI 8, so that the aqueous ammonia is fully contacted with a filler 16 in the cylinder VI 8, and primary treatment is carried out;

The ammonia water after primary treatment is collected by a collector 18 in the cylinder V7; the ammonia water liquid enters the cylinder IV 6, and is subjected to secondary liquid distribution through a distributor 17 in the cylinder IV 6, so that the ammonia water liquid is fully contacted with a filler 16 in the cylinder IV 6, and secondary treatment is performed;

The ammonia water liquid after the second treatment is collected by a collector 18 in the cylinder III 5; the ammonia water liquid enters the cylinder II4, and is distributed for the third time through a distributor 17 in the cylinder II4, so that the ammonia water liquid is fully contacted with a filler 16 in the cylinder II4, and the third treatment is carried out;

The ammonia water liquid after the third treatment enters the cylinder I3, enters the reboiler through the reboiler inlet 34 and then returns to the cylinder I3 through the reboiler outlet 30, the third connecting pipe 31 is communicated with the return pipe 23 through a pipeline, a circulating pump is arranged on the pipeline, the circulating pump is used for bedding the ammonia water liquid in the cylinder I3 into the cylinder IX 11, the ammonia water liquid is subjected to fourth liquid distribution through the distributor 17 in the cylinder VIII 10, so that the ammonia water liquid is fully contacted with the filler 16 in the cylinder VIII 10, and the fourth treatment is performed;

The ammonia water liquid subjected to the fourth treatment enters the cylinder VII 9, is collected by a collector 18 in the cylinder VII 9, and then enters a distributor 17 in the cylinder VI 8 through a distributor liquid outlet 24, so that a liquid circulation is formed; the tower kettle liquid pump is arranged outside the tower, the inlet of the pump is connected with the bottom of the tower kettle, the outlet of the pump is connected with the liquid inlet for circulation, and filtrate circulates among the reboiler, the deamination tower and the tower kettle liquid storage tank by starting the tower kettle liquid pump, and the circulation quantity is controlled at 20m ³/h.

And thirdly, opening a steam valve of the reboiler to preheat the system.

And step four, detecting the PH value of the material after the temperature of the tower top reaches 85-90 ℃ for about 1 hour, and removing the reboiler to pump the material into the storage tank through the reboiler inlet 34 when the PH=7-8, so as to enter the evaporation process.

And fifthly, condensing the ammonia-containing gas at the top of the tower through a condenser, and enabling ammonia gas to be used in a workshop, wherein ammonia water liquid is recycled at the top of the tower.

The above embodiments are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope defined by the claims of the present utility model without departing from the design spirit of the present utility model.

Claims

1. A stripping deamination column, characterized by: the novel high-strength stainless steel skirt comprises a skirt (2), wherein a grounding plate (1) is arranged at the bottom of the skirt (2), a barrel I (3), a barrel II (4), a barrel III (5), a barrel IV (6), a barrel V (7), a barrel VI (8), a barrel VII (9), a barrel VIII (10) and a barrel IX (11) are sequentially arranged at the top of the skirt (2), an upper seal head (12) is arranged at the top of the barrel IX (11), and a lower seal head (13) is arranged at the bottom of the barrel I (3); the novel high-pressure water heater is characterized in that the inside of the cylinder II (4), the cylinder IV (6), the cylinder VI (8) and the cylinder VIII (10) is provided with a filler (16), a distributor (17) is arranged above the filler (16), and collectors (18) are arranged inside the cylinder III (5), the cylinder V (7) and the cylinder VII (9);

The top surface of upper head (12) is provided with overhead thermometer mouth (19), gaseous phase pipe (20) and, overhead manometer mouth (21), be provided with back flow mouth (22) and back flow (23) on the lateral wall of barrel IX (11), be provided with inlet (26) and feed liquor pipe (27) on the left side wall of barrel VI (8) and be located the top of distributor (17), be provided with first takeover (25) on the right side wall of barrel VI (8) and be located the top of distributor (17), be located inside of barrel VII (9) the below of collector (18) is provided with distributor liquid outlet (24), distributor liquid outlet (24) extend to in barrel VI (8), be provided with temperature table mouth (28) in the tower on the lateral wall of barrel IV (6), be provided with second takeover (29) on the lateral wall of barrel III (5), be provided with on the left side wall of barrel I (3) reboiler export (30) and third (31) on the lateral wall of barrel I (3) bottom (32) are provided with pressure table mouth (33).

2. The stripping deamination column of claim 1, wherein: grid plates (15) are arranged on the upper side and the lower side of the filler (16), and supporting rings (14) are arranged on the bottom surface of the grid plates (15) below.

3. The stripping deamination column of claim 2, wherein: the packing (16) is arranged as pall ring packing.

4. The stripping deamination column of claim 2, wherein: the bottom surface of the support ring (14) is provided with a plurality of rib plates (1401), and the rib plates (1401) are uniformly distributed circumferentially.

5. The stripping deamination column of claim 1, wherein: the reboiler inlet (34) comprises a vertical pipe (3401), an elbow (3402) and a horizontal pipe (3403), wherein the top surface of the vertical pipe (3401) is connected to the lower end socket (13), and the elbow (3402) is connected between the vertical pipe (3401) and the horizontal pipe (3403).

6. The stripping deamination column of claim 5, wherein: a support plate (35) is provided inside the horizontal pipe (3403).