CN221432618U - Spray type neutralization washing tower - Google Patents
Spray type neutralization washing tower Download PDFInfo
- Publication number
- CN221432618U CN221432618U CN202420068597.2U CN202420068597U CN221432618U CN 221432618 U CN221432618 U CN 221432618U CN 202420068597 U CN202420068597 U CN 202420068597U CN 221432618 U CN221432618 U CN 221432618U
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- CN
- China
- Prior art keywords
- washing tower
- spray type
- spray
- neutralization
- heat transfer
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- 238000005406 washing Methods 0.000 title claims abstract description 62
- 239000007921 spray Substances 0.000 title claims abstract description 61
- 238000006386 neutralization reaction Methods 0.000 title claims abstract description 43
- 239000007788 liquid Substances 0.000 claims abstract description 38
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims abstract description 17
- 230000003472 neutralizing effect Effects 0.000 claims abstract description 10
- 238000010926 purge Methods 0.000 claims abstract description 4
- 238000004140 cleaning Methods 0.000 claims description 7
- 230000007797 corrosion Effects 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 241000736911 Turritella communis Species 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 2
- 238000000926 separation method Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 8
- 238000005201 scrubbing Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000003595 mist Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000003518 caustics Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 231100001010 corrosive Toxicity 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Landscapes
- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
Abstract
The utility model discloses a spray type neutralization washing tower. The washing tower mainly comprises a gas distributor, a spray type mass and heat transfer device, an anti-wall flow ring, a bubble cap tray, a corrugated plate demister and a shell. The gas distributor is positioned at the lower part of the washing tower, the spray type mass transfer and heat transfer device is positioned at the middle part of the washing tower, the bubble cap tray is positioned at the upper part of the washing tower, the wave-shaped plate demister is positioned at the top of the washing tower, a neutralizing gas inlet, a neutralizing gas outlet, a circulating washing liquid inlet, a supplementary washing liquid inlet, an ammonium nitrate solution outlet, a steam purging port and a manhole are arranged on the shell. The spray type neutralization washing tower adopts a spray type mass transfer and heat transfer device to wash and purify, and solves the problems that the traditional filling material is easy to corrode to cause blockage to increase resistance, and gas and washing liquid are easy to drift to cause poor washing effect. The defogging adopts the wave plate defroster, and its separation channel smoothness is difficult for blockking up and separation efficiency is high.
Description
Technical Field
The utility model belongs to the field of industrial ammonium nitrate, and relates to the technology of washing, absorbing, demisting and the like of neutralizing gas in an ammonium nitrate device and a washing tower.
Background
In the existing ammonium nitrate device, the neutralization gas generated by the neutralization reactor needs to be washed and defogged so as to recycle ammonium nitrate and free ammonia entrained in the neutralization gas and prevent liquid drops from being carried downstream. The neutralization and washing tower for carrying out the neutralization and gas washing and demisting work is generally a metal or ceramic packed tower, and in the actual production process, the following problems often occur: 1. when the car is started and stopped, the air flow fluctuates greatly, so that the packing is damaged by impact. 2. Because the ammonium nitrate solution has high temperature and high acidity, metal or ceramic filler is easy to corrode and lose mass transfer function, and the corrosive substances can generate larger resistance to reduce production load after being blocked; 3. the metal corrosives can cause product pollution to reddish after being brought into the ammonium nitrate solution; the ceramic enamel and the scraps can cause pipeline blockage and pump mechanical seal damage after entering the ammonium nitrate solution. 4. The adoption of the packed tower can easily lead the gas-liquid two-phase to flow away from a short circuit, so that the gas-liquid contact area is reduced, and the washing effect is poor. 5. The original neutralization washing tower adopts a silk screen demister to demist, and tiny silk screens are easy to corrode, lose demisting function and form blockage. These problems have caused significant trouble for the production of the enterprise.
Disclosure of Invention
The utility model aims to solve the problems and the defects of the prior art, and provides a spray type neutralization washing tower, which adopts a spray type mass and heat transfer device to wash and purify, and solves the problems that the traditional filling is easy to corrode to cause blockage to increase resistance, and gas and washing liquid are easy to drift to cause poor washing effect and the like. The defogging adopts the wave plate defroster, and its separation channel smoothness is difficult for blockking up and separation efficiency is high.
The technical scheme of the utility model is as follows: a spray-type neutralizing scrubber mainly comprises a gas distributor, a spray-type mass and heat transfer device, an anti-wall flow ring, a bubble cap tray, a corrugated plate demister and a shell. The gas distributor is positioned at the lower part of the washing tower, the spray type mass transfer and heat transfer device is positioned at the middle part of the washing tower, the bubble cap tray is positioned at the upper part of the washing tower, the wave-shaped plate demister is positioned at the top of the washing tower, a neutralizing gas inlet, a neutralizing gas outlet, a circulating washing liquid inlet, a supplementary washing liquid inlet, an ammonium nitrate solution outlet, a steam purging port and a manhole are arranged on the shell.
The gas distributor is positioned at the lower part of the spray type neutralization washing tower and is connected with a neutralization gas inlet pipe, and 1 or more round holes are uniformly formed in the gas distributor.
The spray type mass transfer and heat transfer device is vertically arranged at one stage or more, each stage of spray type mass transfer and heat transfer device consists of 1 or more nozzles and spray pipes, and the spray angle of the nozzles is designed to be 90-150 degrees.
The wall flow preventing ring is positioned between the spray type mass and heat transfer devices and welded on the inner annular wall of the spray type neutralizing washing tower shell.
The bubble cap tray is positioned at the upper part of the spray type mass transfer and heat transfer device and consists of one layer of bubble cap tray and more than one layer of bubble cap tray.
The wave plate demister is positioned at the top of the spray type neutralizing washing tower, is made of corrosion-resistant stainless steel, consists of one or more wave plates, is installed or detached from a manhole, and is matched with a cleaning pipe and a liquid discharge pipe.
After the scheme is adopted, the utility model has the following advantages:
The spray type mass and heat transfer device of the spray type neutralization washing tower consists of a nozzle and a spray pipe, wherein the nozzle and the spray pipe can be made of thicker corrosion-resistant materials, are not easy to corrode and abrade, and can effectively avoid the problems of pipeline blockage, pump mechanical seal damage, redness of product pollution and the like caused by filler corrosion.
The spray type mass and heat transfer device adopts a nozzle to atomize the circulating washing liquid into fine fog drops, the specific surface area of the fog drops is more than ten times of that of the filler in the same volume, the gas phase and the liquid phase can be fully contacted, the washing absorption effect is greatly enhanced, and the process index is optimized. Meanwhile, the spray type mass transfer and heat transfer mode can uniformly cover the section of the tower, so that the problem that the gas-liquid contact area is reduced due to the fact that gas-liquid of the packed tower is easy to approach is avoided.
3. The spray type mass and heat transfer device adopts multi-stage arrangement, and can adjust the flow of circulating washing liquid according to the change of technological parameters, thereby ensuring the minimization of raw material and power consumption. Every two adjacent stages are also provided with wall flow preventing rings, so that the phenomenon of liquid wall flow is overcome, and the washing effect is improved.
4. The supplementary washing liquid of the spray type neutralization washing tower flows down from the bubble cap tray layer by layer, and the high-concentration fresh absorbing liquid can thoroughly absorb trace ammonium nitrate and free ammonia in the neutralized gas, so that the neutralized gas is purified to the greatest extent.
5. The neutralized gas after washing, absorption and neutralization is entrained with partial water vapor and trace ammonium nitrate, so that the original silk screen demister is easy to corrode and block in actual production, and the demisting function of the original silk screen demister is lost. The demister adopts a viscous gas wave-shaped plate demister which is used by other units in the ammonium nitrate device, the smooth resistance of a channel is reduced, the structure is reasonable, the separation efficiency is high, the separation element adopts thickened corrosion-resistant stainless steel, and the service life can be longer than 15 years.
Drawings
FIG. 1 is a main view of a spray neutralization scrubber according to the present utility model
Description of the embodiments
The utility model will be further described with reference to the accompanying drawings. Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to limit the utility model; for the purpose of better illustrating embodiments of the utility model, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
As can be seen from fig. 1, the spray neutralization scrubber mainly consists of a gas distributor (1), a spray mass and heat transfer device (2), a wall flow prevention ring, a bubble cap tray (5), a corrugated plate demister (7) and a shell (4). The gas distributor (1) is located the lower part of scrubbing tower, and spray type mass transfer heat transfer device (2) are located the middle part of scrubbing tower, bubble cap tray (5) are located the upper portion of scrubbing tower, wave plate defroster (7) are located the top of scrubbing tower, be equipped with neutralization gas import (a) on casing (4), neutralization gas export (b), circulation scrubbing liquid import (c 1/c2/c 3), supplementary scrubbing liquid import (f), ammonium nitrate solution export (d), steam purge mouth (g) and manhole (e).
The neutralization gas from the previous working section enters from the neutralization gas inlet (a), firstly, the neutralization gas enters into the spray type neutralization washing tower through a gas distributor (1) connected with the neutralization gas inlet (a) pipe, and a plurality of small round holes are uniformly distributed on the gas distributor (1) so that the neutralization gas is uniformly and stably introduced into the spray type neutralization washing tower. The washing liquid circulation pump conveys the washing liquid to a circulation washing liquid inlet (c 1/c2/c 3) of each stage of spray type mass transfer heat transfer device (2), each stage of spray type mass transfer heat transfer device (2) consists of a nozzle (10) and a spray pipe (9), 1 or more than 1 nozzle is arranged on the spray pipe (9), the spray angle of the nozzle (10) is designed to be 90-150 degrees, the circulation washing liquid is atomized into fine mist drops through the nozzles (10), the specific surface area of the mist drops is ten times that of a filler in the same volume, the gas phase and the liquid phase are fully contacted, and the washing absorption effect is greatly enhanced. Meanwhile, the spray type mass transfer and heat transfer mode can uniformly cover the section of the tower, so that the problem that the gas-liquid contact area is reduced due to the fact that gas-liquid of the packed tower is easy to approach is avoided. The spray type mass and heat transfer device (2) adopts multi-stage arrangement, and can adjust the flow of circulating washing liquid according to the change of process parameters. And an anti-wall flow ring is welded on the inner annular wall of the spray type neutralization washing tower shell (4) along the middle of each two adjacent spray type mass transfer and heat transfer devices (2) to prevent washing liquid from forming wall flow.
And a bubble cap tray is arranged at the upper part of the spray type neutralization washing tower, unused acid condensate enters from a complementary washing liquid inlet (f), a small amount of ammonia in the neutralization gas is further neutralized through the layer-by-layer washing of a plurality of layers of bubble cap trays (5), and the condensate after absorption is supplemented into ammonium nitrate solution for continuous recycling.
After the neutralization gas is washed and purified, most of ammonium nitrate and free ammonia are absorbed and purified, and the neutralization gas containing trace ammonium nitrate fog particles and water vapor continues to move upwards and passes through a corrugated plate demister (7) at the top of the equipment. The corrugated plate demister (7) is made of corrosion-resistant stainless steel and is installed or detached from the manhole (e). Mist particles and water vapor carried in the steam collide with a plurality of corrugated plates and are adhered to the surfaces of the corrugated plates, larger liquid drops are gradually formed in the forward movement process along with the airflow, when the mist particles and the water vapor move to the wave crest of the corrugated plates, the mist particles and the water vapor are separated under the assistance of an arc-shaped gas-liquid separation groove under the action of steering centrifugal force and gravity, and the separated liquid drops are discharged from a liquid discharge pipe (8); the multi-waveform structure of the waveform plate demister (7) repeatedly removes foam in the middle and gas, thoroughly removes fog particles and water vapor in the middle and gas, and clean middle and gas enters the next working section from the middle and gas outlet (b). Cleaning liquid enters from a steam blowing port (g) of the equipment, the matched cleaning pipe (6) conveys the cleaning liquid to a cleaning unit of the corrugated plate demister (7), and the nozzles (10) on the cleaning pipe (6) can comprehensively and thoroughly remove attachments on the plate, so that the corrugated plate demister (7) can quickly recover a gas-liquid separation function.
Claims (6)
1. A spray neutralization scrubber, characterized in that: the spray type neutralization washing tower mainly comprises a gas distributor (1), a spray type mass transfer heat transfer device (2), a wall flow prevention ring (3), a bubble cap tray (5), a corrugated plate demister (7) and a shell (4), wherein the gas distributor (1) is positioned at the lower part of the washing tower, the spray type mass transfer heat transfer device (2) is positioned at the middle part of the washing tower, the bubble cap tray (5) is positioned at the upper part of the washing tower, the corrugated plate demister (7) is positioned at the top of the washing tower, a neutralization gas inlet (a), a neutralization gas outlet (b), a circulating washing liquid inlet (c 1/c2/c 3), a supplementary washing liquid inlet (f), an ammonium nitrate solution outlet (d), a steam purging port (g) and a manhole (e) are arranged on the shell (4).
2. A spray neutralization scrubber as defined in claim 1 wherein: the gas distributor (1) is positioned at the lower part of the spray type neutralization washing tower and is connected with a neutralization gas inlet (a) pipe, and 1 or more round holes are uniformly formed in the gas distributor.
3. A spray neutralization scrubber as defined in claim 1 wherein: the spray type mass transfer and heat transfer device (2) is vertically arranged at one stage or more, each stage of spray type mass transfer and heat transfer device (2) consists of 1 or more nozzles (10) and spray pipes (9), and the spray angle of the nozzles is designed to be 90-150 degrees.
4. A spray neutralization scrubber as defined in claim 1 wherein: the wall flow preventing ring is positioned between the spray type mass and heat transfer devices (2) and welded on the inner annular wall of the spray type neutralizing washing tower shell (4).
5. A spray neutralization scrubber as defined in claim 1 wherein: the bubble cap tray (5) is positioned at the upper part of the spray type mass and heat transfer device (2) and consists of one layer of bubble cap tray (5) and more than one layer of bubble cap tray.
6. A spray neutralization scrubber as defined in claim 1 wherein: the wave plate demister (7) is positioned at the top of the spray type neutralizing washing tower, is made of corrosion-resistant stainless steel, consists of one or more wave plates, is installed or detached from a manhole (e), and is matched with a cleaning pipe (6) and a liquid discharge pipe (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420068597.2U CN221432618U (en) | 2024-01-11 | 2024-01-11 | Spray type neutralization washing tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420068597.2U CN221432618U (en) | 2024-01-11 | 2024-01-11 | Spray type neutralization washing tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221432618U true CN221432618U (en) | 2024-07-30 |
Family
ID=92063229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420068597.2U Active CN221432618U (en) | 2024-01-11 | 2024-01-11 | Spray type neutralization washing tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221432618U (en) |
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2024
- 2024-01-11 CN CN202420068597.2U patent/CN221432618U/en active Active
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