CN220758620U - Ammonia water preparation facilities suitable for pressurized system - Google Patents
Ammonia water preparation facilities suitable for pressurized system Download PDFInfo
- Publication number
- CN220758620U CN220758620U CN202322542587.6U CN202322542587U CN220758620U CN 220758620 U CN220758620 U CN 220758620U CN 202322542587 U CN202322542587 U CN 202322542587U CN 220758620 U CN220758620 U CN 220758620U
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- China
- Prior art keywords
- ammonia
- ammonia water
- water
- distribution device
- spray distribution
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- 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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- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 title claims abstract description 89
- 235000011114 ammonium hydroxide Nutrition 0.000 title claims abstract description 89
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 106
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 238000010521 absorption reaction Methods 0.000 claims abstract description 29
- 238000009826 distribution Methods 0.000 claims abstract description 26
- 239000007921 spray Substances 0.000 claims abstract description 26
- 238000010612 desalination reaction Methods 0.000 claims abstract description 9
- 238000011033 desalting Methods 0.000 claims description 9
- 238000011049 filling Methods 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 22
- 238000012856 packing Methods 0.000 description 13
- 239000007788 liquid Substances 0.000 description 12
- 239000000945 filler Substances 0.000 description 3
- 238000003795 desorption Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The utility model discloses an ammonia water preparation device suitable for a pressurizing system, which aims to solve the problems that the existing equipment needs more equipment in the process of preparing ammonia water, the energy consumption is large, the production cost is extremely high, the concentration of the prepared ammonia water is low, the conversion rate is low, the production cost is high, the waste of ammonia resources is caused, the ammonia content of discharged tail gas exceeds the standard, and serious pollution is caused to the environment; the dilute ammonia water tank is connected with the ammonia water spray distribution device, the top in the water seal tank is provided with the desalination spray distribution device, the water seal tank is connected with the desalination spray distribution device in the ammonia absorption tower, ammonia resource product loss is reduced for enterprises, high-concentration ammonia water products are prepared, ammonia carried by the exhaust gas is efficiently treated and recovered, energy conservation and emission reduction are realized, and ecological environment is protected.
Description
Technical Field
The utility model belongs to the field of coal chemical production, and particularly relates to an ammonia water preparation device suitable for a pressurizing system.
Background
The existing ammonia water preparation technology mainly produces ammonia water by a method of contacting ammonia gas with water. The ammonia water liquid after the ammonia gas is contacted with water and absorbed also contains some impurities and unreacted gases, the materials are required to be separated, the separation method mainly comprises heating desorption and compression desorption, the two methods are both required to perform certain heat exchange, a concentrator usually adopts a multistage heat exchanger and a vacuum evaporator to operate, the concentration process also requires certain subsequent treatment operations such as filtration, boiling, precipitation and the like to remove the impurities, the process for preparing the ammonia water requires more equipment, the energy consumption is large, the production cost is extremely high, the concentration of the ammonia water prepared by the method is low, the conversion rate is low, and the production cost is increased. The ammonia escape phenomenon is serious, so that the waste of ammonia resources is caused, the ammonia content of the discharged tail gas exceeds the standard, and serious pollution is caused to the environment.
Disclosure of Invention
In order to solve the problems of more equipment, high energy consumption, extremely high production cost, low concentration of the prepared ammonia, low conversion rate, high production cost, waste of ammonia resources, excessive ammonia content in the discharged tail gas and serious pollution to the environment in the process of preparing the ammonia by using the existing equipment.
The technical scheme of the utility model is as follows: the ammonia water preparation device suitable for the pressurization system comprises a dilute ammonia water tank, an ammonia absorption tower, an ammonia water cooler, an ammonia water circulating pump, a water seal tank, an ammonia water spray distribution device, a desalting water pump and a desalting spray distribution device;
the ammonia gas absorption tower is internally and sequentially provided with a desalting spray distribution device, a primary filling area, an ammonia water spray distribution device, a secondary filling area and an ammonia gas distributor from top to bottom, wherein pure ammonia gas is introduced into the ammonia gas distributor from the outside, and the bottom of the ammonia gas absorption tower is connected with the upper part of a dilute ammonia water tank;
the top of the dilute ammonia water tank is provided with a single-suction vacuum valve, one path of the lower part of the dilute ammonia water tank is connected with an ammonia water spraying and distributing device through an ammonia water cooler and an ammonia water circulating pump, and the other path of the lower part of the dilute ammonia water tank discharges concentrated ammonia water;
the top of the water seal tank is provided with a desalting spray distribution device, the bottom of the water seal tank is provided with a non-condensable gas distributor, the top of the dilute ammonia water tank is connected with the non-condensable gas distributor at the top of the ammonia absorption tower, and the bottom of the water seal tank is connected with the desalting spray distribution device in the ammonia absorption tower through a desalted water pump.
The lower part of the dilute ammonia water tank is provided with a densimeter and a thermometer.
Advantages of the utility model
The utility model provides an ammonia water preparation device suitable for a pressurizing system, solves the problems of the existing ammonia water preparation device, reduces ammonia resource product loss for enterprises, provides an ultra-clean ammonia water preparation device, has enough contact area and contact time between gas and liquid in a tower, has little ammonia escape, and can efficiently treat and recycle ammonia carried by exhaust gas, thereby realizing energy conservation and emission reduction and protecting ecological environment.
After the ammonia water preparation device adopting the pressurizing system is adopted, non-condensable gas is emptied to be NH 3 The content is less than 5mg/m 3 。
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
reference numerals illustrate: 1. an ammonia absorption tower; 2. an ammonia water cooler; 3. a dilute ammonia water tank; 4. an ammonia water circulating pump; 5. a densitometer; 6. a thermometer; 7. ammonia water spraying and distributing device; 8. a water seal groove; 9. a desalting water pump; 10. desalted water spraying and distributing device; 11. an ammonia gas distributor; 12. a noncondensable gas distributor; 13. a primary packing region; 14. a secondary packing region; 15. a single suction vacuum valve.
Detailed Description
As shown in fig. 1: the ammonia water preparation device suitable for the pressurization system comprises a dilute ammonia water tank 3, and further comprises an ammonia gas absorption tower 1, an ammonia water cooler 2, an ammonia water circulating pump 4, a water seal tank 8, an ammonia water spray distribution device 7, a desalted water pump 9 and a desalting spray distribution device 10;
a desalting spray distribution device 10, a primary filling area 13, an ammonia water spray distribution device 7, a secondary filling area 14 and an ammonia gas distributor 11 are sequentially arranged in the ammonia gas absorption tower 1 from top to bottom, pure ammonia gas is introduced into the ammonia gas distributor 11 from the outside, and the bottom of the ammonia gas absorption tower 1 is connected with the upper part of a dilute ammonia water tank 3;
a single-suction vacuum valve 15 is arranged at the top of the dilute ammonia water tank 3, one path of the lower part of the dilute ammonia water tank 3 is connected with an ammonia water spray distribution device 7 through an ammonia water cooler 2 and an ammonia water circulating pump 4, and the other path of the lower part of the dilute ammonia water tank discharges concentrated ammonia water;
the top in the water seal tank 8 is equipped with desalination spray distribution device 10, and the bottom is equipped with noncondensable gas distributor 12, noncondensable gas distributor 12 is connected with ammonia absorption tower 1 top in dilute ammonia water tank 3 top, desalination spray distribution device 10 in ammonia absorption tower 1 is connected through desalination pump 9 to water seal tank 8 bottom.
The lower part of the dilute ammonia tank 3 is provided with a densimeter 5 and a thermometer 6.
The working description: as shown in fig. 1, pure ammonia from an ammonia distillation system is pressed into the middle part of an ammonia absorption tower 1 by a fan, and the pure ammonia enters a primary filling area 13 at a constant speed through a gas distributor 11 to be in contact reaction with desalted water.
The device adopts desalted water as absorption liquid, and the temperature is about 30 ℃. Desalted water from the desalted water pipeline enters from the upper part of the water seal tank 8, is sent to a desalted water spray distribution device 10 at the upper part of a primary filling area 13 of the ammonia absorption tower 1 through a desalted water pump 9, is subjected to primary spraying, so that two phases of gas and liquid are fully contacted, absorbed and mixed once, and falls into the bottom of the tower along with the gravity action of the absorbed liquid by utilizing the related principles of hydrodynamics.
The desalted water absorbs pure ammonia gas as an exothermic process, the released solution heat heats the ammonia water, the temperature is about 50 ℃, the temperature in the ammonia gas absorption tower 1 is prevented from being overhigh, the temperature is reduced by the ammonia water cooler 2 and then reaches the dilute ammonia water tank 3, the temperature is controlled to be about 30 ℃, the cooled ammonia water is circularly sent to the ammonia water spraying distribution device 7 at the upper part of the second-level packing layer 14 at the top of the ammonia gas absorption tower 1 by the ammonia water circulating pump 4 for spraying, the second-level spraying is carried out, the gas-liquid two-phase contact reaction is carried out again, and the concentration of the ammonia water is continuously increased after the ammonia gas is repeatedly absorbed. The ammonia water concentration is controlled in the required range by controlling the feeding proportion of ammonia and desalted water, firstly introducing water and then introducing air, controlling the ammonia water concentration in the required range, controlling the ammonia water temperature at about 30 ℃ by a thermometer 6, and discharging ammonia water product when the densimeter 5 reaches 0.887 g/L.
The non-condensable gas entering the tower along with the pure ammonia gas is discharged to a non-condensable gas distributor 12 of the water seal tank 8 through a non-condensable gas exhaust pipe at the top of the ammonia gas absorption tower 1. Meanwhile, ammonia water enters the noncondensable gas in the dilute ammonia water tank 3, and is continuously sucked into the noncondensable gas distributor 12 at the bottom of the liquid level of the water seal tank 8 through the noncondensable gas exhaust pipe at the top of the dilute ammonia water tank 3, ammonia entrained in the noncondensable gas is again contacted and absorbed with desalted water in the water seal tank 8, ammonia is thoroughly intercepted, and clean gas is emptied from the high position of the emptying pipe at the top of the water seal tank 8, so that the environmental protection requirement of zero emission is realized.
The top packing of the ammonia absorption tower 1 is placed on the supporting plate in a random manner. A packing pressing plate is arranged above the packing to prevent the packing from being blown by the upward air flow. The absorption liquid of the ammonia absorption tower 1 is sprayed onto the filler from the top of the tower through an ammonia water spray distribution device 7 and a desalination spray distribution device 10 and flows down along the surface of the filler. Pure ammonia gas is fed from the middle part of the ammonia gas absorption tower 1, and after being dispersed by the ammonia gas distributor 11, the pure ammonia gas continuously passes through the packing layer in countercurrent with liquid, and on the surface of the packing, gas-liquid two phases are in close contact for mass transfer.
When the liquid moves downwards along the packing layer, wall flow phenomenon is sometimes presented, and the wall flow effect forms uneven dispersion of gas-liquid two phases in the packing layer, so that the mass transfer power is reduced. Therefore, the packing layer of the device is divided into two sections, a re-dispersing device is arranged in the center, and the re-dispersing device sprays the re-dispersed filler layer onto the base packing layer. As the air inlet pipe and the air outlet pipe of the ammonia absorption tower 1 are small, micro-positive pressure is generated in the tower, thereby achieving the purpose of high-efficiency absorption.
The utility model provides an ammonia water preparation device suitable for a pressurizing system, solves the problems of the existing ammonia water preparation device, reduces ammonia resource product loss for enterprises, and provides an ultra-clean ammonia water preparation device which not only can prepare high-concentration ammonia water products, but also can treat and recycle ammonia carried by exhaust gas efficiently, thereby realizing energy conservation and emission reduction and protecting ecological environment.
Claims (2)
1. The utility model provides an aqueous ammonia preparation facilities suitable for pressurization system, includes thin ammonia water pitcher (3), its characterized in that: the device also comprises an ammonia absorption tower (1), an ammonia water cooler (2), an ammonia water circulating pump (4), a water seal tank (8), an ammonia water spray distribution device (7), a desalted water pump (9) and a desalted spray distribution device (10);
a desalting spray distribution device (10), a primary filling area (13), an ammonia water spray distribution device (7), a secondary filling area (14) and an ammonia gas distributor (11) are sequentially arranged in the ammonia gas absorption tower (1) from top to bottom, pure ammonia gas is introduced into the ammonia gas distributor (11) from the outside, and the bottom of the ammonia gas absorption tower (1) is connected with the upper part of a dilute ammonia water tank (3);
a single-suction vacuum valve (15) is arranged at the top of the dilute ammonia water tank (3), one path of the dilute ammonia water tank (3) is connected with an ammonia water spraying and distributing device (7) through an ammonia water cooler (2) and an ammonia water circulating pump (4), and the other path of the dilute ammonia water tank discharges concentrated ammonia water;
the top is equipped with desalination spray distribution device (10) in water seal tank (8), and the bottom is equipped with noncondensable gas distributor (12), noncondensable gas distributor (12) are connected at thin ammonia water pitcher (3) top and ammonia absorption tower (1) top, desalination spray distribution device (10) in ammonia absorption tower (1) are connected through desalination water pump (9) in water seal tank (8) bottom.
2. An ammonia water producing device suitable for use in a pressurized system as defined in claim 1, wherein: the lower part of the dilute ammonia water tank (3) is provided with a densimeter (5) and a thermometer (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322542587.6U CN220758620U (en) | 2023-09-19 | 2023-09-19 | Ammonia water preparation facilities suitable for pressurized system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322542587.6U CN220758620U (en) | 2023-09-19 | 2023-09-19 | Ammonia water preparation facilities suitable for pressurized system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220758620U true CN220758620U (en) | 2024-04-12 |
Family
ID=90610515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322542587.6U Active CN220758620U (en) | 2023-09-19 | 2023-09-19 | Ammonia water preparation facilities suitable for pressurized system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220758620U (en) |
-
2023
- 2023-09-19 CN CN202322542587.6U patent/CN220758620U/en active Active
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