CN219647108U - Device for absorbing ammonia gas - Google Patents
Device for absorbing ammonia gas Download PDFInfo
- Publication number
- CN219647108U CN219647108U CN202221300465.5U CN202221300465U CN219647108U CN 219647108 U CN219647108 U CN 219647108U CN 202221300465 U CN202221300465 U CN 202221300465U CN 219647108 U CN219647108 U CN 219647108U
- Authority
- CN
- China
- Prior art keywords
- absorption
- pipe
- ammonia
- spray
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 190
- 238000010521 absorption reaction Methods 0.000 claims abstract description 125
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 86
- 239000007788 liquid Substances 0.000 claims abstract description 86
- 239000007921 spray Substances 0.000 claims abstract description 69
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 44
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 44
- 238000011084 recovery Methods 0.000 claims abstract description 17
- 238000009826 distribution Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 47
- 238000000034 method Methods 0.000 description 8
- 238000003860 storage Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000013505 freshwater Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- HGINCPLSRVDWNT-UHFFFAOYSA-N Acrolein Chemical compound C=CC=O HGINCPLSRVDWNT-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- IKHGUXGNUITLKF-XPULMUKRSA-N acetaldehyde Chemical compound [14CH]([14CH3])=O IKHGUXGNUITLKF-XPULMUKRSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- -1 hydroxide ions Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Gas Separation By Absorption (AREA)
Abstract
The utility model discloses a device for absorbing gas ammonia, which comprises an absorption tank, wherein the absorption tank is used for containing absorption liquid; the spray absorption pipe is provided with a closed cavity structure, the top of the spray absorption pipe is connected with a spray liquid supply pipe, and the bottom of the spray absorption pipe is connected with a spray liquid recovery pipe; the middle part of the spray absorption pipe is connected with an air ammonia supply pipe. The device for absorbing the gas ammonia fully utilizes the equipment and facilities such as the existing safety valve tail gas concentrated absorption tank, the ammonia water pump, the ammonia water discharge pipe and the like. Simple structure, convenient manufacture and small occupied area. The structural design is reasonable, and is suitable for overhauling the recovery of exhaust gas ammonia. The upper air inlet is used for exhausting air downwards, the porous air is exhausted below the liquid level, the gas-liquid contact time and the contact area are increased to the maximum extent, and the absorption efficiency is increased; meanwhile, the ammonia water circulation avoids the reduction of the absorption effect due to the overhigh local ammonia water concentration in the absorption tank, and improves the ammonia gas absorption amount of water in unit volume.
Description
Technical Field
The utility model relates to the technical field of ammonia recovery, in particular to a device for absorbing ammonia gas.
Background
Liquid ammonia, also known as anhydrous ammonia, is a colorless liquid with a strong pungent odor. Ammonia is an important chemical raw material, and for convenience in transportation and storage, gaseous ammonia is usually pressurized or cooled to obtain liquid ammonia. Liquid ammonia is easy to dissolve in water, ammonium ions NH4+ and hydroxide ions OH-are formed after the liquid ammonia is dissolved in water, and the solution is alkaline. Liquid ammonia is often stored in pressure-resistant cylinders or tanks and cannot coexist with acetaldehyde, acrolein, boron, and the like. The liquid ammonia is widely applied in industry, has corrosiveness and is easy to volatilize, so that the occurrence rate of chemical accidents is very high. The liquid ammonia storage tank type equipment is used for storing and transporting liquid ammonia. The method is widely applied to the fields of chemical industry, construction, aerospace, biology, gas, medical treatment and the like.
The liquid ammonia storage tank is in order to guarantee the security when in actual use and need to examine and repair regularly, and Wen Yean storage tank has 2 stages to produce gas ammonia in examining and repairing: a small amount of low-temperature liquid ammonia remains in the tank before overhauling to gasify and discharge the gaseous ammonia; and (3) discharging ammonia during the period of replacing nitrogen with ammonia after maintenance and before use.
The liquid ammonia storage tank is inspected and repaired once in 2-3 years, a complex absorption device is uneconomical to set on site, most of enterprises at present directly guide gas ammonia into a tail gas centralized absorption tank of a safety valve for simple absorption, the absorption efficiency is low, the on-site ammonia smell is large, a small amount of gas ammonia is discharged in an unorganized manner, and resources are wasted to pollute the environment.
Therefore, how to provide a simple absorption device for gas and ammonia, and to improve the absorption efficiency of gas and ammonia are technical problems that the skilled person is urgent to solve.
Disclosure of Invention
The utility model provides a device for absorbing gaseous ammonia.
The utility model provides the following scheme:
an apparatus for absorbing gaseous ammonia, comprising:
the absorption tank is used for containing absorption liquid;
the spray absorption pipe is provided with a closed cavity structure, the top of the spray absorption pipe is connected with a spray liquid supply pipe, and the bottom of the spray absorption pipe is connected with a spray liquid recovery pipe; the middle part of the spray absorption pipe is connected with a gas ammonia supply pipe;
the liquid inlet end of the ammonia water pump is connected with the absorption tank, and the liquid outlet end of the ammonia water pump is connected with the spray liquid supply pipe;
wherein, spray liquid recovery pipe keep away from spray the one end of absorption pipe extends to the bottom of absorption pond.
Preferably: the device also comprises a gas ammonia guiding assembly, wherein the gas ammonia guiding assembly comprises a gas ammonia guiding pipe and a gas ammonia distributing pipe which are connected; the gas ammonia guiding pipe is connected with the spray absorption pipe, and the gas ammonia distribution pipe is positioned below the liquid level in the absorption tank.
Preferably: the connection position of the gas ammonia guide pipe and the spray absorption pipe is lower than the connection position of the gas ammonia supply pipe and the spray absorption pipe.
Preferably: the gas-ammonia distribution pipe is provided with a plurality of exhaust holes.
Preferably: the absorption tank also comprises an absorption liquid filling pipeline, wherein the absorption liquid filling pipeline is used for adding fresh absorption liquid into the absorption tank.
Preferably: the absorption liquid filling pipeline is positioned above the liquid level in the absorption tank.
Preferably: the liquid outlet end of the ammonia water pump is connected with an ammonia water discharge pipe.
Preferably: the spray liquid supply pipe is provided with a first stop valve, and the ammonia water discharge pipe is provided with a second stop valve.
According to the specific embodiment provided by the utility model, the utility model discloses the following technical effects:
by means of the utility model, a device for absorbing gaseous ammonia may be realized, which in one implementation may comprise an absorption cell for containing an absorption liquid; the spray absorption pipe is provided with a closed cavity structure, the top of the spray absorption pipe is connected with a spray liquid supply pipe, and the bottom of the spray absorption pipe is connected with a spray liquid recovery pipe; the middle part of the spray absorption pipe is connected with a gas ammonia supply pipe; the liquid inlet end of the ammonia water pump is connected with the absorption tank, and the liquid outlet end of the ammonia water pump is connected with the spray liquid supply pipe; wherein, spray liquid recovery pipe keep away from spray the one end of absorption pipe extends to the bottom of absorption pond. The device for absorbing the gas ammonia fully utilizes the equipment and facilities such as the existing safety valve tail gas concentrated absorption tank, the ammonia water pump, the ammonia water discharge pipe and the like. Simple structure, convenient manufacture and small occupied area. The structural design is reasonable, and is suitable for overhauling the recovery of exhaust gas ammonia. The upper air inlet is used for exhausting air downwards, the porous air is exhausted below the liquid level, the gas-liquid contact time and the contact area are increased to the maximum extent, and the absorption efficiency is increased; meanwhile, the ammonia water circulation avoids the reduction of the absorption effect due to the overhigh local ammonia water concentration in the absorption tank, and improves the ammonia gas absorption amount of water in unit volume.
Of course, it is not necessary for any one product to practice the utility model to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an apparatus for absorbing gaseous ammonia according to an embodiment of the present utility model.
In the figure: the device comprises an absorption tank 1, a spray absorption pipe 2, a spray liquid supply pipe 3, a spray liquid recovery pipe 4, a gas ammonia supply pipe 5, an ammonia water pump 6, a gas ammonia guide pipe 7, a gas ammonia distribution pipe 8, an absorption liquid filling pipeline 9, an ammonia water external discharge pipe 10, a first stop valve 11 and a second stop valve 12.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the utility model, fall within the scope of protection of the utility model.
Examples
Referring to fig. 1, an apparatus for absorbing gaseous ammonia according to an embodiment of the present utility model, as shown in fig. 1, may include:
an absorption tank 1, wherein the absorption tank 1 is used for containing absorption liquid;
the spray absorption pipe 2 is provided with a closed cavity structure, the top of the spray absorption pipe 2 is connected with a spray liquid supply pipe 3, and the bottom of the spray absorption pipe 2 is connected with a spray liquid recovery pipe 4; the middle part of the spray absorption pipe 2 is connected with an air ammonia supply pipe 5;
the liquid inlet end of the ammonia water pump 6 is connected with the absorption tank 1, and the liquid outlet end of the ammonia water pump 6 is connected with the spray liquid supply pipe 3;
wherein, the one end of the spray liquid recovery pipe 4 far away from the spray absorption pipe 2 extends to the bottom of the absorption tank 1.
According to the device for absorbing gas and ammonia provided by the embodiment of the utility model, the gas and ammonia supply pipe can be connected with the gas and ammonia discharge pipe of the liquid ammonia storage tank, gasified ammonia in the liquid ammonia storage tank can be guided into the spray absorption pipe, the ammonia water pump continuously supplies liquid in the absorption tank to the spray absorption pipe from the top of the spray absorption pipe, the ammonia can be absorbed after the spray liquid contacts with the ammonia, the spray liquid after absorbing the ammonia can be guided into the absorption tank through the spray liquid recovery pipe, and the ammonia water in the absorption liquid in the absorption tank can be uniformly distributed through the cyclic utilization of the ammonia water pump. And good ammonia absorption effect can be obtained.
In the actual use process, most of the gas ammonia can be absorbed in the spray absorption pipe, and a situation that a part of the gas ammonia cannot be absorbed possibly occurs, in order to ensure that the gas ammonia is absorbed as much as possible, the embodiment of the utility model can also provide a gas ammonia guiding assembly, wherein the gas ammonia guiding assembly comprises a gas ammonia guiding pipe 7 and a gas ammonia distribution pipe 8 which are connected; the gas ammonia guiding pipe 7 is connected with the spray absorption pipe 2, and the gas ammonia distributing pipe 8 is positioned below the liquid level in the absorption tank 1. The gas ammonia guiding component can guide the residual gas ammonia in the spray absorption pipe into the absorption tank, and the gas ammonia is absorbed by the liquid in the absorption tank.
In order to improve the guiding and absorbing effect of the residual gas ammonia, the embodiment of the utility model can also provide that the connection position of the gas ammonia guiding pipe and the spraying and absorbing pipe is lower than the connection position of the gas ammonia supplying pipe and the spraying and absorbing pipe. The gas-ammonia distribution pipe is provided with a plurality of exhaust holes.
An absorption liquid filling pipe 9 is also included, and the absorption liquid filling pipe 9 is used for adding fresh absorption liquid into the absorption tank 1. The fresh absorption liquid may be fresh water. The absorption liquid filling pipeline is positioned above the liquid level in the absorption tank.
Further, the liquid outlet end of the ammonia water pump is connected with an ammonia water discharge pipe 10. The spray liquid supply pipe 3 is provided with a first stop valve 11, and the ammonia water discharge pipe 10 is provided with a second stop valve 12. Through the arrangement, one part of liquid in the absorption tank can be discharged, and the other part of liquid can reduce the saturation of ammonia water after being mixed with fresh absorption liquid, so that the absorption effect of ammonia gas is improved.
A simple apparatus for absorbing gaseous ammonia comprising: the device comprises an absorption tank, an ammonia water pump, an ammonia water outlet pipe, a spray liquid supply pipe, a spray absorption liquid recovery pipe, a gas ammonia supply pipe, a gas ammonia distribution pipe and an absorption liquid filling pipeline.
The spray absorption pipe and the gas-ammonia distribution pipe can effectively increase the gas-liquid contact time and the gas-liquid contact area. The ammonia gas is firstly contacted with water in the spray absorption pipe to be absorbed and dissolved in the water to flow into the absorption tank, and the unabsorbed ammonia gas enters the absorption tank to be contacted with water through a plurality of holes on a horizontal exhaust pipe buried in the water to be absorbed.
The liquid pipe for spraying and sucking is buried in the deep position of the liquid level of the absorption tank, and fresh water is added from the liquid level of the partial open position, so that the phenomenon of overhigh concentration at the upper part in the vertical direction caused by lighter specific gravity of ammonia water than water is overcome.
The ammonia water pump and the spray liquid supply pipe enable absorption liquid to circulate, so that the phenomenon of uneven distribution in the horizontal direction in the absorption tank is overcome, namely, the concentration of ammonia water is lower with the spray absorption liquid recovery pipe and the gas ammonia distribution pipe as the center along with the distance from the pipe orifice. The condition that the local ammonia water concentration in the absorption tank is too high can be effectively changed by increasing circulation, so that the ammonia water concentration in the absorption tank tends to be consistent. After a period of time, a part of ammonia water is discharged through an outlet outer pipe of the ammonia water pump, and fresh water is supplemented to the absorption tank through an absorption liquid filling pipeline.
In a word, the device for absorbing gas and ammonia provided by the utility model fully utilizes equipment and facilities such as the existing safety valve tail gas centralized absorption tank, an ammonia water pump, an ammonia water discharge pipe and the like. Simple structure, convenient manufacture and small occupied area. The structural design is reasonable, and is suitable for overhauling the recovery of exhaust gas ammonia. The upper air inlet is used for exhausting air downwards, the porous air is exhausted below the liquid level, the gas-liquid contact time and the contact area are increased to the maximum extent, and the absorption efficiency is increased; meanwhile, the ammonia water circulation avoids the reduction of the absorption effect due to the overhigh local ammonia water concentration in the absorption tank, and improves the ammonia gas absorption amount of water in unit volume.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model are included in the protection scope of the present utility model.
Claims (8)
1. An apparatus for absorbing gaseous ammonia, comprising:
the absorption tank is used for containing absorption liquid;
the spray absorption pipe is provided with a closed cavity structure, the top of the spray absorption pipe is connected with a spray liquid supply pipe, and the bottom of the spray absorption pipe is connected with a spray liquid recovery pipe; the middle part of the spray absorption pipe is connected with a gas ammonia supply pipe;
the liquid inlet end of the ammonia water pump is connected with the absorption tank, and the liquid outlet end of the ammonia water pump is connected with the spray liquid supply pipe;
wherein, spray liquid recovery pipe keep away from spray the one end of absorption pipe extends to the bottom of absorption pond.
2. The apparatus for absorbing gaseous ammonia of claim 1, further comprising a gaseous ammonia guiding assembly comprising an associated gaseous ammonia guiding tube and gaseous ammonia distribution tube; the gas ammonia guiding pipe is connected with the spray absorption pipe, and the gas ammonia distribution pipe is positioned below the liquid level in the absorption tank.
3. The apparatus for absorbing gaseous ammonia according to claim 2, wherein the connection position of the gaseous ammonia guiding pipe and the spray absorbing pipe is lower than the connection position of the gaseous ammonia supplying pipe and the spray absorbing pipe.
4. The apparatus for absorbing gaseous ammonia according to claim 2, wherein the gaseous ammonia distribution pipe is formed with a plurality of exhaust holes.
5. The apparatus for absorbing gaseous ammonia of claim 1, further comprising an absorption liquid filling line for adding fresh absorption liquid into the absorption tank.
6. The apparatus for absorbing gaseous ammonia of claim 5, wherein the absorption liquid filling line is located above a liquid level within the absorption tank.
7. The device for absorbing gaseous ammonia according to claim 1, wherein the ammonia water pump has a liquid outlet connected to an ammonia water outlet pipe.
8. The apparatus for absorbing gaseous ammonia according to claim 7, wherein the spray liquid supply pipe is provided with a first shut-off valve, and the aqueous ammonia exo-calandria is provided with a second shut-off valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221300465.5U CN219647108U (en) | 2022-05-27 | 2022-05-27 | Device for absorbing ammonia gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221300465.5U CN219647108U (en) | 2022-05-27 | 2022-05-27 | Device for absorbing ammonia gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219647108U true CN219647108U (en) | 2023-09-08 |
Family
ID=87856341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221300465.5U Active CN219647108U (en) | 2022-05-27 | 2022-05-27 | Device for absorbing ammonia gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219647108U (en) |
-
2022
- 2022-05-27 CN CN202221300465.5U patent/CN219647108U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |