CN215916912U - Spray set of synthetic ammonia production usefulness - Google Patents
Spray set of synthetic ammonia production usefulness Download PDFInfo
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- CN215916912U CN215916912U CN202121663867.7U CN202121663867U CN215916912U CN 215916912 U CN215916912 U CN 215916912U CN 202121663867 U CN202121663867 U CN 202121663867U CN 215916912 U CN215916912 U CN 215916912U
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Abstract
The utility model discloses a spraying device for synthetic ammonia production, and belongs to the technical field of synthetic ammonia production equipment. The spraying device comprises a spraying mechanism, the spraying mechanism comprises a central water supply pipe and a plurality of spiral spray heads; the central water inlet pipe is uniformly branched into a plurality of branch water pipes along the circumferential direction, and each branch water pipe is fixedly connected with a spiral spray head; the lower end of the central water inlet pipe is fixedly connected with a spiral spray head; the nozzle of the spiral spray head is a hollow spiral conical nozzle; the spiral spray head comprises a plurality of layers of spray surfaces. The spiral spray nozzle can solve the problems of small spray range, large liquid drop and poor ammonia washing effect of the circular hole spray nozzle in the prior art, can ensure that the water mist fully contacts ammonia to improve the ammonia washing effect by large spray area, small liquid drop and more mist layers sprayed by the spiral spray nozzle, and has simple structure and convenient use.
Description
Technical Field
The utility model belongs to the technical field of synthetic ammonia production equipment, and particularly relates to a spraying device for synthetic ammonia production.
Background
At present, some process gases (also called purge gases) need to be discharged in the industrial synthetic ammonia production process, and the process gases contain H2、N2、NH3、CH4And Ar, wherein water and ammonia (NH)3) The absorption ratio of (1: 700), and absorbing ammonia gas with water to generate ammonia water, and returning the ammonia water to the production system for recycling. The equipment for recovering ammonia gas is an ammonia washing tower, ammonia gas enters the middle part of the ammonia washing tower and is in reverse contact with softened water sprayed by a spray head at the top of the tower, the softened water absorbs the ammonia gas and then becomes ammonia water, the ammonia water is discharged from the bottom of the tower and sent to a urea ammonia water tank, and the process gas after washing is discharged from the top of the ammonia washing tower and sent to the next procedure so as to recover other components in the gas. The softened water is converted into mist water under the action of the spray head so as to increase the contact area of the water and the ammonia gas and be beneficial to the absorption of the ammonia gas.
Among the prior art, the demineralized water shower nozzle that uses usually is a plurality of round hole shower nozzles, the shower nozzle is evenly placed downwards and is become the ring form, demineralized water sprays downwards and is reverse contact with the ammonia, but because round hole formula shower nozzle spun vaporific water smoke is the cake form, it is less to spray the water smoke scope, the water smoke liquid droplet is big, it is poor to the washing effect of ammonia, lead to often having the ammonia of effusion in washing ammonia tower exhaust process gas, it is not thorough to cause the ammonia to retrieve, it is extravagant to form the energy, simultaneously, the ammonia of effusion also influences the recovery effect of other gases in next process.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems of small range of water mist spraying, large water mist liquid drop and poor ammonia washing effect of a round hole nozzle in the prior art, and provides a spraying device for synthetic ammonia production, so as to change the traditional water mist generation method, increase the contact area of water mist and ammonia and enhance the ammonia absorption effect of water mist.
In order to achieve the technical purpose, the utility model adopts the following technical scheme:
a spray set for synthetic ammonia production comprises a spray mechanism, wherein the spray mechanism comprises a central water supply pipe and a plurality of spiral spray heads; the central water inlet pipe is uniformly branched into a plurality of branch water pipes along the circumferential direction, and each branch water pipe is fixedly connected with a spiral spray head; the lower end of the central water inlet pipe is fixedly connected with a spiral spray head; the nozzle of the spiral spray head is a hollow spiral conical nozzle, and the spiral spray head comprises a plurality of layers of spray surfaces.
Further, a nozzle of the spiral spray head is arranged vertically downwards; the spraying angle of each layer of spraying surface of the spiral spray head is 120 DEG
Furthermore, the spraying mechanism comprises 5 spiral spray heads, the central water inlet pipe is evenly branched into 4 branch water pipes along the circumferential direction, and the 4 branch water pipes are respectively and fixedly communicated with a first spiral spray head, a second spiral spray head, a third spiral spray head and a fourth spiral spray head; the lower end of the central water inlet pipe is fixedly communicated with a fifth spiral nozzle, and the fifth spiral nozzle is positioned below the centers of the first spiral nozzle, the second spiral nozzle, the third spiral nozzle and the fourth spiral nozzle.
Further, the fifth spiral spray head is located 20cm below the centers of the first, second, third and fourth spiral spray heads.
Furthermore, the nozzle size of the first spiral spray head, the second spiral spray head, the third spiral spray head and the fourth spiral spray head is 3/4 inches, and the spray surface is 4 layers.
Furthermore, the nozzle size of the fifth spiral spray head is 1 inch, and the spray surface is 5 layers.
Further, the spraying device also comprises an ammonia washing tower; the tower top of the ammonia washing tower is provided with a softened water inlet and a process gas outlet, the side wall of the ammonia washing tower is provided with a process gas inlet, and the bottom of the ammonia washing tower is provided with an ammonia water outlet; the spraying mechanism is positioned inside the top of the ammonia-washing tower and is communicated with a softened water inlet.
Furthermore, the process gas inlet is arranged in the middle of the side wall of the ammonia washing tower.
Compared with the prior art, the utility model has the following beneficial effects:
(1) in the spraying device, the nozzle size of 4 spiral nozzles of the first spiral nozzle, the second spiral nozzle, the third spiral nozzle and the fourth spiral nozzle is 3/4 inches, the spraying surfaces are respectively provided with 4 layers, the spraying angle of each layer of the spraying surface is 120 degrees, each spiral nozzle can form a 480-degree spraying surface, the 4 spiral nozzles are uniformly distributed around a central water inlet pipe at the top of the ammonia washing tower, the water mist range completely covers the circular inner wall of the ammonia washing tower, so that the circular hole nozzle is adopted to form the water quantity of one layer of circular spraying surface in the prior art, the 4 spiral nozzles respectively form 480-degree spraying surfaces, and the upper layer and the lower layer of the water mist are overlapped to form multilayer water mist to wash and absorb ammonia for many times, thereby effectively compensating the shortage of single-layer water mist, greatly increasing the contact area of the water mist and the ammonia gas and enhancing the absorption effect of softened water on the ammonia gas, the recovery rate of liquid ammonia and the washing effect of the process gas are increased;
(2) according to the spraying device, a fifth spiral spray head is further arranged at the position of 20cm downward from the centers of the 4 spiral spray heads of the first spiral spray head, the second spiral spray head, the third spiral spray head and the fourth spiral spray head, the size of a nozzle of the fifth spiral spray head is 1 inch, the spraying surfaces are provided with 5 layers, the spraying angle of each layer of the spraying surface is 120 degrees, and a 600-degree spraying surface can be formed; the fifth spiral nozzle is directly communicated with the central water inlet pipe 50 through a connector, the sprayed water mist is large in quantity and large in area and is used for pre-washing the process gas containing ammonia gas from bottom to top, and the ammonia gas which is not absorbed by the water mist of the fifth spiral nozzle continues to be washed, contacted and absorbed by the water mist sprayed by the 4 spiral nozzles from bottom to top, so that the washing effect is further improved; finally, the volume content of ammonia in the process gas after being washed by the five spiral spray heads is reduced to below 0.1% from 13%, so that the requirement of subsequent processes on the content of ammonia in the process gas is greatly met;
(3) according to the spraying device disclosed by the utility model, the process gas inlet is arranged in the middle of the side wall of the ammonia washing tower, so that ammonia gas in the process gas can be prevented from overflowing from the top of the ammonia washing tower after being absorbed by water mist before being absorbed due to the overhigh position of the process gas inlet; meanwhile, the phenomenon that other gases are easily entrained into ammonia water and discharged from the bottom of the ammonia washing tower due to the excessively low position of a process gas inlet can be avoided;
(4) the spray device provided by the utility model has the advantages that the water mist sprayed by the spiral spray head is large in area, multiple in water mist layers, multiple in liquid drops and small in liquid drop volume, the water mist can fully contact ammonia gas, the ammonia gas absorbing effect of water washing is good, and the spray device is not only suitable for absorbing ammonia gas by water, but also can be used in spray absorption occasions of other liquids on gas, such as water spray SO2And the NaOH aqueous solution absorbs HCL and the like, and the utility model has simple structure, convenient use and certain popularization value.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
in the figure: 1-a process gas inlet, 2-a softened water inlet, 3-a process gas outlet, 4-an ammonia washing tower, 5-a spraying mechanism, 50-a central water inlet pipe, 51-a first spiral spray nozzle, 52-a second spiral spray nozzle, 53-a third spiral spray nozzle, 54-a fourth spiral spray nozzle, 55-a fifth spiral spray nozzle and 6-an ammonia water outlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
With reference to fig. 1, the utility model provides a spray device for synthetic ammonia production, comprising a process gas inlet 1, a softened water inlet 2, a process gas outlet 3, an ammonia washing tower 4, a spray mechanism 5 and an ammonia water outlet 6; the softened water inlet 2 and the process gas outlet 3 are arranged at the top of the ammonia washing tower 4, the process gas inlet 1 is arranged at the middle part of the side wall of the ammonia washing tower 4, and the ammonia water outlet 6 is arranged at the bottom of the ammonia washing tower 4; the spraying mechanism 5 is positioned inside the top of the ammonia-washing tower 4 and is communicated with the softened water inlet 2.
The spraying mechanism 5 comprises a central water supply pipe 50 and 5 spiral spray heads, wherein 4 branch water pipes are uniformly branched from the central water inlet pipe 50 along the circumferential direction, each branch water pipe is fixedly connected with one spiral spray head through a connector, and the branch water pipes are connected with 4 spiral spray heads, namely a first spiral spray head 51, a second spiral spray head 52, a third spiral spray head 53 and a fourth spiral spray head 54; the lower end of the central water inlet pipe 50 is fixedly connected with a fifth spiral nozzle 55 through a connector, and the fifth spiral nozzle 55 is arranged 20cm below the centers of the 4 spiral nozzles; the nozzles of the spiral spray heads are all vertically arranged downwards, the nozzles of the spiral spray heads are all hollow spiral conical nozzles made of 316L stainless steel, and the single-layer spray face spray angle of the nozzles is 120 degrees; the nozzle sizes of the first spiral spray head 51, the second spiral spray head 52, the third spiral spray head 53 and the fourth spiral spray head 54 are 3/4 inches, and the spray surface is 4 layers; the nozzle size of the fifth spiral spray nozzle 55 is 1 inch, and the spray surface is 5 layers.
The working principle is as follows:
softened water enters a spraying mechanism 5 in an ammonia washing tower 4 through a softened water inlet 2 and then respectively reaches five spiral spray heads through a central water inlet pipe 50 and branch water pipes, the softened water flows along a spiral surface under the flow guiding action of a spiral conical nozzle, the softened water is tangent to the continuously reduced spiral surface and collides with the continuously reduced spiral surface under the impact action of large water volume water pressure, the softened water is changed into tiny liquid beads to form water mist, the water mist is centrifugally moved along the spiral surface to be thrown out to form spraying, the softened water which is not thrown out continuously flows along the spiral surface to be tangent to the spiral surface, collides with the spiral surface and is thrown out to form water mist, and the water mist is sprayed out until the softened water flows to the conical tip of the nozzle to form the water mist completely; the process gas containing ammonia enters the ammonia washing tower 4 through the process gas inlet 1 and volatilizes from bottom to top, and sequentially and reversely contacts the fifth spiral spray nozzle 55 and the softened water mist sprayed by the 4 spiral spray nozzles 51-54 at the upper end of the fifth spiral spray nozzle to realize the water washing and absorbing process of ammonia.
Specifically, the nozzle size of the fifth spiral nozzle 55 is 1 inch, the spraying surface has 5 layers, the spraying angle of each layer is 120 degrees, and a 600-degree spraying surface can be formed; meanwhile, the fifth spiral nozzle 55 is directly communicated with the central water inlet pipe 50 through a connector, the sprayed water mist is large in amount and large in area and is used for pre-washing the process gas containing ammonia gas from bottom to top, and the ammonia gas which is not absorbed by the water mist of the fifth spiral nozzle 55 continues to be washed and contacted with and absorbed by the water mist sprayed by the 4 spiral nozzles 51-54 from bottom to top.
4 spiral nozzle, first spiral nozzle 51, second spiral nozzle 52, third spiral nozzle 53 and fourth spiral nozzle 54's nozzle size is 3/4 cun promptly, and the face that sprays respectively has 4 layers, and every layer of spray angle is 120, and every spiral nozzle all can form 480 injection face, 4 spiral nozzle set up around the central inlet tube homodisperse at ammonia tower top, and the circular inner wall of ammonia tower is washed in the water smoke scope is covered completely, and four spiral nozzle form four layers 480 injection face altogether separately, thoroughly disperses into water fog with the big liquid drop in the demineralized water, has increased the area of contact of water smoke with the ammonia, strengthens the absorbing effect of demineralized water to the ammonia, has increased the rate of recovery of liquid ammonia and the washing effect of process gas.
Finally, the water mist sprayed out by the five spiral nozzles washes ammonia gas to form ammonia water, the ammonia water falls back to the bottom of the ammonia washing tower under the action of gravity, and the ammonia water is discharged out of the ammonia washing tower through an ammonia water outlet 6 and is sent to a urea ammonia water tank; the process gas after being washed by the five spiral spray heads is discharged from a process gas outlet 3 and enters the next process, and the volume content of ammonia in the process gas discharged after being washed by water can be reduced from 13% to below 0.1%, so that the requirement of the subsequent process on the content of ammonia in the process gas is greatly met.
The above description is only an example of the present application and is not intended to limit the present invention. Any modification, equivalent replacement, and improvement made within the scope of the application of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The spraying device for producing the synthetic ammonia is characterized by comprising a spraying mechanism (5), wherein the spraying mechanism (5) comprises a central water supply pipe (50) and a plurality of spiral spray heads; the central water inlet pipe (50) is uniformly branched into a plurality of branch water pipes along the circumferential direction, and each branch water pipe is fixedly connected with a spiral spray head; the lower end of the central water inlet pipe (50) is fixedly connected with a spiral spray head; the nozzle of the spiral spray head is a hollow spiral conical nozzle, and the spiral spray head comprises a plurality of layers of spray surfaces.
2. The spray device for producing synthetic ammonia according to claim 1, wherein the nozzles of the spiral spray heads are arranged vertically downward; the spraying angle of each layer of spraying surface of the spiral spray head is 120 degrees.
3. The spraying device for producing synthetic ammonia according to claim 1, wherein the spraying mechanism (5) comprises 5 spiral nozzles, the central water inlet pipe (50) is evenly branched into 4 branch water pipes along the circumferential direction, and the 4 branch water pipes are respectively and fixedly communicated with the first spiral nozzle (51), the second spiral nozzle (52), the third spiral nozzle (53) and the fourth spiral nozzle (54); the lower end of the central water inlet pipe (50) is fixedly communicated with a fifth spiral nozzle (55), and the fifth spiral nozzle (55) is positioned below the centers of the first spiral nozzle (51), the second spiral nozzle (52), the third spiral nozzle (53) and the fourth spiral nozzle (54).
4. A spray device for the production of synthetic ammonia according to claim 3, wherein the fifth spiral spray head (55) is located 20cm below the center of the first spiral spray head (51), the second spiral spray head (52), the third spiral spray head (53) and the fourth spiral spray head (54).
5. The spraying device for producing synthetic ammonia according to claim 3 or 4, wherein the first spiral nozzle (51), the second spiral nozzle (52), the third spiral nozzle (53) and the fourth spiral nozzle (54) have a nozzle size of 3/4 inches, and the spraying surface has 4 layers.
6. A spray assembly for synthetic ammonia production according to claim 3 or 4 wherein the fifth spiral spray head (55) has a nozzle size of 1 inch and a spray face of 5 layers.
7. A spray system for the production of synthetic ammonia according to claim 1, wherein the spray system further comprises an ammonia scrubber (4); the tower top of the ammonia washing tower (4) is provided with a softened water inlet (2) and a process gas outlet (3), the side wall of the ammonia washing tower (4) is provided with a process gas inlet (1), and the bottom of the ammonia washing tower (4) is provided with an ammonia water outlet (6); the spraying mechanism (5) is positioned inside the top of the ammonia washing tower (4) and is communicated with the softened water inlet (2).
8. The spraying device for producing synthetic ammonia according to claim 7, wherein the process gas inlet (1) is arranged in the middle of the side wall of the ammonia scrubber (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121663867.7U CN215916912U (en) | 2021-07-21 | 2021-07-21 | Spray set of synthetic ammonia production usefulness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121663867.7U CN215916912U (en) | 2021-07-21 | 2021-07-21 | Spray set of synthetic ammonia production usefulness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215916912U true CN215916912U (en) | 2022-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121663867.7U Active CN215916912U (en) | 2021-07-21 | 2021-07-21 | Spray set of synthetic ammonia production usefulness |
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| Country | Link |
|---|---|
| CN (1) | CN215916912U (en) |
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2021
- 2021-07-21 CN CN202121663867.7U patent/CN215916912U/en active Active
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