CN113952814A - Deamination tower for preventing ammonia from escaping - Google Patents
Deamination tower for preventing ammonia from escaping Download PDFInfo
- Publication number
- CN113952814A CN113952814A CN202111432223.1A CN202111432223A CN113952814A CN 113952814 A CN113952814 A CN 113952814A CN 202111432223 A CN202111432223 A CN 202111432223A CN 113952814 A CN113952814 A CN 113952814A
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- Prior art keywords
- water
- ammonia
- pipe
- tank body
- gas
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/16—Apparatus having rotary means, other than rotatable nozzles, for atomising the cleaning liquid
- B01D47/18—Apparatus having rotary means, other than rotatable nozzles, for atomising the cleaning liquid with horizontally-arranged shafts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
- B01D47/022—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath by using a liquid curtain
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1412—Controlling the absorption process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
- B01D53/185—Liquid distributors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/266—Drying gases or vapours by filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/30—Controlling by gas-analysis apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/10—Inorganic absorbents
- B01D2252/103—Water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/406—Ammonia
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention relates to the technical field of waste gas treatment, in particular to a deamination tower for preventing ammonia from escaping, which comprises a tank body, wherein the upper part and the lower part of the side wall of the tank body are respectively provided with an air inlet and an air outlet; make the layer that sprays form a high density water curtain through the water pump pressurization, the gas that gets into the jar body forms a looks contrary looks molten state with the water curtain under the pressure differential effect, makes the ammonia in the gas dissolve in aqueous, descends to the tower bottom, then through defogging layer secondary filter, realizes discharging behind the gas-water separation, effectively reduces the ammonia and is excessive, also reduces simultaneously and sprays the water loss, has reduced the circulating water extravagant, has realized high quality except that ammonia.
Description
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to a deamination tower for preventing ammonia from escaping.
Background
In the production process of other chemical plants such as cement plants, a small amount of ammonia is usually generated along with the production process, in the relatively closed environment of a workshop, the ammonia is volatilized disorderly, the ammonia concentration is higher and higher, the physical health of workers in the workshop is seriously threatened, and once the ammonia is dissipated to the external environment through an exhaust port and a door window of the workshop, the environment is polluted.
According to the ammonia purification treatment device disclosed by the application number 2021103047993, ammonia is sucked into the integrated collecting pipe through the gas collecting hood and then enters the spray tower, the ammonia removes dust impurities in the ammonia through the filler, the water pump pumps water in the water tank out for the spray header to spray, the spray header sprays water onto the filler, the ammonia in the gas is removed through the water flowing down on the surface of the filler and along the surface of the filler, and the rest gas is discharged through the discharge cylinder.
The inventor of the application discovers that: the amount of water flowing down on the surface of the filler and along the surface of the filler is difficult to control and is distributed unevenly, so that ammonia in gas cannot be fully contacted with water, the ammonia absorption effect is poor, and the deamination quality is poor; and a large amount of water mist can be carried in discharged gas, spray water is consumed quickly, frequent replenishment is needed, and the labor and material cost of deamination is increased.
Disclosure of Invention
The invention aims to solve the problems, and provides the deamination tower which has stable performance, lower operation energy consumption and high deamination quality and can prevent ammonia from escaping.
The invention solves the problems and adopts the technical scheme that:
the utility model provides a prevent deamination tower of ammonia escape, includes a jar body, and air inlet, gas vent have been seted up respectively to the upper portion and the lower part of jar side wall, and jar internal being provided with sprays the layer, sprays the level and is located between air inlet and gas vent, and the position that the jar body is located the air inlet downside is as water storage portion, and the outside of jar body is provided with the circulating pipe that the intercommunication sprayed layer and water storage portion, is provided with circulating water pump on the circulating pipe, still is provided with in the jar body and removes the fog layer, and the fog layer is located and sprays between layer and the gas vent.
Compared with the prior art, the invention adopting the technical scheme has the outstanding characteristics that:
pressurizing by a circulating water pump to enable the spraying layer to form a high-density water curtain, enabling gas entering the tank body from the gas inlet to form a reverse phase melting state with the water curtain under the action of pressure difference, enabling ammonia and dust impurities in the gas to be dissolved in water, enabling the water containing the ammonia and dust to fall to the bottom of the tower, and discharging the gas from which the ammonia and the dust are removed after gas-water separation through the demisting layer; the deaminizing tower does not need to be filled with materials to remove dust impurities in sucked gas, and ammonia gas and the dust impurities in the gas can be removed through a high-density water curtain, so that the cost is saved; the spraying water quantity can be controlled through the circulating water pump, and the water curtain can be uniformly distributed through the high-density water curtain formed by the spraying layer, so that ammonia in the gas is fully contacted with the water, and the absorption effect and the deamination quality of the ammonia are improved; the problems that ammonia gas overflows along with circulating water and the circulating water is consumed too fast are avoided through the fog removing layer, the consumption of spraying water is reduced, the waste of the circulating water is reduced, and the operation cost of the system is reduced.
Preferably, the further technical scheme of the invention is as follows:
a liquid level meter and an ammonia water concentration measuring instrument are arranged on the side wall of the water storage part, a water injection pipe and a drain pipe are respectively arranged at the upper part and the lower part of the water storage part, an automatic water replenishing valve is arranged on the water injection pipe, and a stop valve is arranged on the drain pipe; the ammonia content in water is monitored by an ammonia water concentration measuring instrument, water is drained and injected in time, the liquid level in the water tank is monitored by a liquid level meter, and then the water injection of the water replenishing valve is controlled.
The air inlet and the air outlet are both provided with a metal expansion joint and an electric louver valve; during maintenance, the electric louver valve is used for isolating, and the electric louver valve can be used for controlling the gas flow of the gas inlet and the gas outlet.
An electric butterfly valve, a check valve and a pressure gauge are arranged on the pipe body of the circulating water pipe close to the water outlet of the circulating water pump, and an electric butterfly valve is arranged on the pipe body of the circulating water pipe close to the water inlet of the circulating water pump; through electric butterfly valve and manometer, can monitor and control out the water flow, can prevent through the check valve that water refluxes.
Two access doors are arranged on the side wall of the tank body, and the two access doors are respectively positioned at the lower part and the upper part of the tank body; is convenient for cleaning the tank body and maintaining the device.
The outer wall of the tank body is provided with an annular rib, and the inner wall of the tank body is provided with a support shaped like a Chinese character 'mi'; the structure of the deamination tower is more stable.
An ammonia gas detection alarm device is arranged on the exhaust port; and when the content of ammonia in the exhaust gas exceeds the standard, an alarm signal is sent out, so that the abnormality of the equipment can be found in time and the operation parameters of the equipment can be adjusted.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a deamination tower according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a spraying layer at a height of 14m in the deamination tower in the embodiment of the invention;
fig. 3 is a schematic diagram of a spraying layer structure at the height of 16 meters in the deamination tower in the embodiment of the invention.
In the figure: a tank body 1; an air inlet 101; an exhaust port 102; a water storage part 2; a water injection pipe 201; a drain pipe 202; an automatic water replenishing valve 203; a shut-off valve 204; a spray layer 3; a nozzle 301; a circulating water pump 4; a defogging layer 5; a liquid level meter 6; an ammonia water concentration measuring instrument 7; a metal expansion joint 8; an electric louver valve 9; an electric butterfly valve 10; a check valve 11; an access door 12; a water circulation pipe 13.
Detailed Description
The invention will be further illustrated by the following examples, which are intended only for a better understanding of the present invention and therefore do not limit the scope of the invention.
As shown in fig. 1 to 3, a deamination tower for preventing ammonia from escaping comprises a tank body 1 with a height of 22m, wherein the upper part and the lower part of the side wall of the tank body 1 are respectively provided with an air inlet 101 and an air outlet 102, the upper part of the inner cavity of the tank body 1 is provided with an upper spraying layer 3 and a lower spraying layer 3, the two spraying layers 3 are respectively distributed at the height positions of 14m and 16m of the tank body 1, the two spraying layers 3 are both positioned between the air inlet 101 and the air outlet 102, the part of the tank body 1 positioned below the air inlet 101 is used as a water storage part 2, circulating water is injected into the water storage part 2, a circulating water pipe 13 communicating the spraying layers 3 and the water storage part 2 is arranged outside the tank body 1, a circulating water pump 4 is arranged on the circulating water pipe 13, the circulating water pump 4 can pump the circulating water into the spraying layers 3 from the water storage part 2 below the tank body 1, the upper part of the inner cavity of the tank body 1 is also provided with two demisting layers 5, and the demisting layers 5 are positioned between the spraying layer 3 and the exhaust port 102; wherein, the demisting layer 5 is made of a baffle type demister; the two spraying layers 3 can be synchronously controlled by a set of circulating water pipe 13 and circulating water pump 4, and can also be respectively controlled by two sets of circulating water pipes 13 and circulating water pumps 4; 64 spray nozzles 301 are distributed on the spray layer 3 with the height of 14m, 4 spray pipelines are arranged, 12, 20 and 12 spray nozzles 301 are respectively arranged on each pipeline, the spray nozzles 301 on each pipeline are vertically staggered, and the spray nozzles 301 arranged on the middle two spray pipelines are all arranged to form an included angle of 75 degrees with the horizontal plane at an acute angle; the spray layer 3 with the height of 16m is provided with 92 spray nozzles 301, 4 spray pipelines are arranged, and each spray pipeline is respectively provided with 16, 30 and 16 spray nozzles 301.
A liquid level meter 6 and an ammonia water concentration measuring instrument 7 are arranged on the side wall of the water storage part 2, a water injection pipe 201 and a water discharge pipe 202 are respectively arranged at the upper end and the lower end of the water storage part 2, an automatic water replenishing valve 203 is arranged on the water injection pipe 201, a stop valve 204 is arranged on the water discharge pipe 202, in implementation, the automatic control of the liquid level of the water storage part 2 can be realized through a PLC controller, specifically, the PLC controller is respectively connected with the liquid level meter 6, the ammonia water concentration measuring instrument 7, the automatic water replenishing valve 203 and the stop valve 204, the liquid level meter 6 sends the monitored liquid level data to the PLC controller, the ammonia water concentration measuring instrument 7 sends the monitored concentration data to the PLC controller, the PLC controller determines that the stop valve 204 is opened for draining water after the concentration data exceeds the set concentration, and after the liquid level is reduced to a preset value, the stop valve 204 is closed, the automatic water replenishing valve 203 is opened for water replenishing, and when the liquid level is increased to the preset value, the automatic water replenishing valve 203 is closed.
A metal expansion joint 8 and an electric louver valve 9 are arranged outside the air inlet 101 and the air outlet 102; the electric louver valve 9 is used for closing the air inlet 101 and the air outlet 102 during maintenance, and the air flow of the air inlet 101 and the air outlet 102 can be controlled by controlling the opening degree of the electric louver valve 9.
An electric butterfly valve 10 for controlling water flow, a check valve 11 for avoiding water backflow and a pressure gauge for detecting water pressure are installed at one end of the circulating water pipe 13 close to the water outlet of the circulating water pump 4, and the electric butterfly valve 10 is installed at one end of the circulating water pipe 13 close to the water inlet of the circulating water pump 4; the water yield and the water outlet pressure can be adjusted by adjusting the opening degree of the electric butterfly valve 10 at the water outlet in the production process, the check valve 11 is closed to prevent water in the spraying layer from flowing backwards when the production is stopped, and the electric butterfly valve 10 at the water inlet is closed to prevent water in the tank body from flowing outwards when the circulating water pump 4 is overhauled.
In order to facilitate cleaning and maintenance of the device, two access doors 12 with the diameter of 0.8m are respectively arranged on the lower part and the upper part of the side wall of the tank body 1, the access door 12 on the upper part is positioned above the spraying layer 3, and the access door on the lower part is positioned on the side wall of the water storage part.
The section 1-9 m of the tank body 1 is made of a steel plate with the thickness of 10mm, the section 9-22 m of the tank body 1, an air inlet pipeline and an air outlet pipeline are made of steel plates with the thickness of 8mm, the outer wall of the tank body 1 is provided with a ring rib, and the inner wall of the tank body 1 is provided with a support shaped like a Chinese character 'mi'.
An ammonia gas detection alarm device is arranged on the exhaust port 102; and when the content of the ammonia in the discharged gas exceeds the standard, the ammonia detection alarm device sends out an alarm signal.
When the device is used, the spraying layer 3 forms a high-density water curtain by pressurizing through the circulating water pump 4, gas entering the tank body 1 forms a reverse phase melting state with the water curtain under the action of pressure difference, ammonia and dust in the gas are completely dissolved in water, the water with the ammonia and the dust freely falls to the bottom of the tower, and finally the gas from which the ammonia and the dust are removed is discharged after gas-water separation is realized through the defogging layer 5.
The device can greatly reduce ammonia gas overflow and realize that the ammonia escape is less than 5mg/nm3Meanwhile, the consumption of spraying water can be reduced through the demisting layer 5, high-quality ammonia removal is realized, the waste of circulating water is reduced, and the energy consumption of system operation is reduced; automatic discharge and water injection can be realized through the water injection and drainage unit, the working efficiency is improved, and the labor cost is reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, which is defined in the appended claims.
Claims (7)
1. The utility model provides a prevent deamination tower of ammonia escape, includes a jar body, and air inlet, gas vent have been seted up respectively to the upper portion and the lower part of jar side wall, and jar internal being provided with sprays the layer, sprays the level and is located between air inlet and the gas vent, and the position that the jar body is located the air inlet downside is as water storage portion, and the outside of jar body is provided with the circulating pipe that the intercommunication sprayed layer and water storage portion, is provided with circulating water pump, its characterized in that on the circulating pipe: still be provided with the defogging layer in the jar body, the defogging layer is located and sprays between layer and the gas vent.
2. The ammonia slip prevention deamination tower as claimed in claim 1, wherein: be provided with level gauge and aqueous ammonia concentration measurement appearance on the lateral wall of water storage portion, the upper portion and the lower part of water storage portion are provided with water injection pipe and drain pipe respectively, install automatic water supply valve on the water injection pipe, install the stop valve on the drain pipe.
3. The ammonia slip prevention deamination tower as claimed in claim 1, wherein: and the air inlet and the air outlet are respectively provided with a metal expansion joint and an electric louver valve.
4. The ammonia slip prevention deamination tower as claimed in claim 1, wherein: an electric butterfly valve, a check valve and a pressure gauge are arranged on the pipe body of the circulating water pipe close to the water outlet of the circulating water pump, and an electric butterfly valve is arranged on the pipe body of the circulating water pipe close to the water inlet of the circulating water pump.
5. The ammonia slip prevention deamination tower as claimed in claim 1, wherein: the lateral wall of the tank body is provided with two access doors which are respectively positioned at the lower part and the upper part of the tank body.
6. The ammonia slip prevention deamination tower as claimed in claim 1, wherein: the outer wall of the tank body is provided with a ring rib, and the inner wall of the tank body is provided with a support shaped like a Chinese character 'mi'.
7. The ammonia slip prevention deamination tower as claimed in claim 1, wherein: and an ammonia gas detection alarm device is arranged on the exhaust port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111432223.1A CN113952814A (en) | 2021-11-29 | 2021-11-29 | Deamination tower for preventing ammonia from escaping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111432223.1A CN113952814A (en) | 2021-11-29 | 2021-11-29 | Deamination tower for preventing ammonia from escaping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113952814A true CN113952814A (en) | 2022-01-21 |
Family
ID=79472357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111432223.1A Withdrawn CN113952814A (en) | 2021-11-29 | 2021-11-29 | Deamination tower for preventing ammonia from escaping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113952814A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040031470A (en) * | 2002-10-07 | 2004-04-13 | 주식회사 포스코 | Spraying Apparatus for Ammonia Collecting Tower |
| US20050053536A1 (en) * | 2003-09-05 | 2005-03-10 | Chein Hung Min | Method and apparatus for treating waste gas containing acid and/or base |
| CN103446865A (en) * | 2013-07-03 | 2013-12-18 | 四川大学 | Nitrophosphate tail gas deamination device and nitrophosphate tail gas deamination process |
| CN103566742A (en) * | 2013-10-25 | 2014-02-12 | 常州大学 | Device for removing high-concentration ammonia nitrogen in chemical waste gas |
| CN207076267U (en) * | 2017-07-18 | 2018-03-09 | 广东绿神器环保设备科技有限公司 | A kind of band can load and unload the spray column of cyclic water tank |
| CN109173615A (en) * | 2018-10-15 | 2019-01-11 | 山东环达环保科技有限公司 | Coke-oven plant's ammonia slot exhaust gas treating method and device |
| CN208975474U (en) * | 2018-08-30 | 2019-06-14 | 东营市金凤凰化工股份有限公司 | Ammonia reabsorbs device in ortho-aminobenzoic acid production |
| CN111530237A (en) * | 2020-05-09 | 2020-08-14 | 中国联合工程有限公司 | Ammonia gas recovery structure and ammonia gas recovery method for fly ash curing workshop |
-
2021
- 2021-11-29 CN CN202111432223.1A patent/CN113952814A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040031470A (en) * | 2002-10-07 | 2004-04-13 | 주식회사 포스코 | Spraying Apparatus for Ammonia Collecting Tower |
| US20050053536A1 (en) * | 2003-09-05 | 2005-03-10 | Chein Hung Min | Method and apparatus for treating waste gas containing acid and/or base |
| CN103446865A (en) * | 2013-07-03 | 2013-12-18 | 四川大学 | Nitrophosphate tail gas deamination device and nitrophosphate tail gas deamination process |
| CN103566742A (en) * | 2013-10-25 | 2014-02-12 | 常州大学 | Device for removing high-concentration ammonia nitrogen in chemical waste gas |
| CN207076267U (en) * | 2017-07-18 | 2018-03-09 | 广东绿神器环保设备科技有限公司 | A kind of band can load and unload the spray column of cyclic water tank |
| CN208975474U (en) * | 2018-08-30 | 2019-06-14 | 东营市金凤凰化工股份有限公司 | Ammonia reabsorbs device in ortho-aminobenzoic acid production |
| CN109173615A (en) * | 2018-10-15 | 2019-01-11 | 山东环达环保科技有限公司 | Coke-oven plant's ammonia slot exhaust gas treating method and device |
| CN111530237A (en) * | 2020-05-09 | 2020-08-14 | 中国联合工程有限公司 | Ammonia gas recovery structure and ammonia gas recovery method for fly ash curing workshop |
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Application publication date: 20220121 |