CN112915732A - Ammonia purification treatment device - Google Patents
Ammonia purification treatment device Download PDFInfo
- Publication number
- CN112915732A CN112915732A CN202110304799.3A CN202110304799A CN112915732A CN 112915732 A CN112915732 A CN 112915732A CN 202110304799 A CN202110304799 A CN 202110304799A CN 112915732 A CN112915732 A CN 112915732A
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- Prior art keywords
- section
- spray
- ammonia gas
- ammonia
- treatment device
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- 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
- B01D53/1493—Selection of liquid materials for use as absorbents
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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
- B01D47/14—Packed scrubbers
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- 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
- B01D53/1418—Recovery of products
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- 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
- B01D53/1431—Pretreatment by other processes
- B01D53/145—Pretreatment by separation of solid or liquid material
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- 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
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- 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
Abstract
The invention relates to the technical field of waste gas treatment, in particular to an ammonia gas purification treatment device which comprises an integrated collecting pipe, a spray tower, a centrifugal fan and a discharge cylinder, wherein one end of the integrated collecting pipe is communicated with the lower part of an inner cavity of the spray tower, the top of the spray tower is communicated with the centrifugal fan, the centrifugal fan is communicated with the discharge cylinder, filler is arranged in the middle of the inner cavity of the spray tower, a spray head is arranged at the upper part of the inner cavity of the spray tower and is arranged on a spray header, the other end of the spray header is connected with a water tank, the water tank is positioned at the bottom of the inner cavity of the spray tower, a water pump is also arranged on the spray header, the other end of the integrated collecting pipe is communicated with a crystallization section, a suction filtration section, a polymerization section, a hydrolysis. The integrated ammonia gas collection and spray water washing are adopted, so that the problem that the ammonia gas in a workshop exceeds the standard in the dicyandiamide production process is solved.
Description
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to an ammonia gas purification treatment device.
Background
In the production process of dicyandiamide, a small amount of ammonia gas is generated in hydrolysis decalcification and polymerization processes, wherein a slurry preparation tank, a circulation tank, a belt filter, a polymerization pot and a crystallization pot all belong to semi-closed states, a small amount of ammonia gas is volatilized disorderly, the ammonia gas concentration is higher and higher in a relatively closed environment of a workshop, the ammonia gas in the workshop exceeds the standard and is pungent and unpleasant, the physical health of workers participating in production work in the environment is threatened, and the ammonia gas is dissipated to the external environment through an exhaust port and a door and window, so that certain pollution is caused to the environment.
In the prior art, in the production process of a dicyandiamide workshop, no ammonia gas collecting device is used in the production process, ammonia gas is randomly dissipated into the air, and the ammonia gas content in the hydrolysis decalcification, filtration, polymerization, suction filtration and crystallization processes reaches about 100 ppm. Particularly, in summer, the temperature of a workshop is high, ammonia gas is strong in pungent smell, the health of workers participating in production work for a long time is threatened, the workshop is subjected to ventilation treatment by opening a window and an axial flow fan at present, so that the concentration of the ammonia gas in partial working procedures of the workshop is relieved, the effect is poor, the ammonia gas is discharged outwards for a long time, the smell of the ammonia gas around the workshop is high, and certain pollution is caused to the environment.
Disclosure of Invention
The invention provides an ammonia purification treatment device for solving the problems in the prior art, which adopts integrated ammonia collection and spray water washing to solve the problem that ammonia in a workshop exceeds the standard in the production process of dicyandiamide.
The invention is realized by the following technical scheme: the utility model provides an ammonia purification unit, includes collecting pipe, spray column, centrifugal fan, a discharge tube, collecting pipe one end intercommunication spray column inner chamber lower part, spray column top intercommunication centrifugal fan, a centrifugal fan intercommunication discharge tube, spray column inner chamber middle part sets up the filler, spray column inner chamber upper portion sets up the shower head, the shower head sets up on spray header, the pond is connected to the spray header other end, the pond is located spray column inner chamber bottom, spray header still is provided with the water pump.
According to the invention, ammonia gas in a workshop is sucked from an integrated collecting pipe by a centrifugal fan, the ammonia gas is introduced into a spray tower for spray treatment, the ammonia gas is sprayed and then flows reversely in the spray tower, finally enters a water tank and is dissolved in water, the concentration of ammonia water reaches about 20%, the ammonia water can be transported for recycling, and residual gas in the spray tower enters the centrifugal fan and is finally discharged through a discharge cylinder; the invention can recycle the ammonia gas in the workshop, and the residual gas is discharged through the discharge cylinder, thereby reducing the ammonia gas concentration in the workshop and realizing the energy recycling.
The upper part of the inner cavity of the spray tower is provided with a spray head, the spray head is arranged on a spray water pipe, the other end of the spray water pipe is connected with a water tank, the water tank is positioned at the bottom of the inner cavity of the spray tower, the spray water pipe is also provided with a water pump, the water pump pumps out water in the water tank, and then the spray head sprays ammonia gas; the middle part of the inner cavity of the spray tower is provided with a filler, the dust impurities in the gas phase can be removed after the ammonia gas containing dust passes through the filler, the spray head sprays water onto the filler, the ammonia gas flows down along the surface of the filler, the gas phase and the liquid phase on the surface of the filler are in close contact with each other for mass transfer, and finally the ammonia gas flows into a water tank.
Further, the other end of the integrated collecting pipe is communicated with a crystallization working section, a suction filtration working section, a polymerization working section, a hydrolysis carbonization working section and a belt filter.
The integrated collecting pipe can be connected with a plurality of sections for collecting ammonia gas.
Further, the crystallization section, the suction filtration section, the polymerization section, the hydrolysis carbonization section and the belt filter are all provided with gas collecting hoods, and the integrated collecting pipe is communicated with the crystallization section, the suction filtration section, the polymerization section, the hydrolysis carbonization section and the belt filter through the gas collecting hoods.
The arrangement of the gas collecting hood can enhance the ammonia gas collecting effect.
Further, the bottom of the inner cavity of the spray tower is connected with an ammonia water concentration measuring instrument.
The ammonia water concentration measuring instrument can detect the concentration of ammonia water and transport the recyclable ammonia water out in time.
Further, a water outlet is arranged at the bottom of the inner cavity of the spray tower, and a valve switch is arranged on the water outlet.
The bottom of the inner cavity of the spray tower is provided with a water outlet, and a valve switch can be opened when the recycled ammonia water needs to be discharged.
Further, a pressing plate is arranged on the filler.
A packing press plate is installed above the packing to restrict the movement of the packing with the updraft.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. according to the ammonia purification treatment device, ammonia is recycled through collection and treatment of ammonia, the recycling rate is high, and the economic benefit is increased;
2. the ammonia gas purification treatment device disclosed by the invention solves the problem that ammonia gas is inorganically diffused to threaten human health for a long time in the production process of dicyandiamide in a production workshop;
3. the ammonia purification treatment device provided by the invention can be used for solving the problem of continuous environmental pollution caused by dissipated ammonia, and achieving the purpose of green production.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
reference numbers and corresponding part names in the drawings:
1-crystallization section, 2-suction filtration section, 3-polymerization section, 4-hydrolysis carbonization section, 5-belt filter, 6-integrated collecting pipe, 7-spray tower, 8-spray water pipe, 9-spray head, 10-filler, 11-water tank, 12-water pump, 13-centrifugal fan, 14-discharge cylinder and 15-pressing plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
The utility model provides an ammonia purification unit, includes collecting pipe 6, spray column 7, centrifugal fan 13, a discharge tube 14, collecting pipe 6 one end intercommunication 7 inner chambers lower parts of spray column, 7 top intercommunications of spray column centrifugal fan 13, centrifugal fan 13 intercommunication discharge tube 14, 7 inner chambers middle parts of spray column set up filler 10, 7 inner chambers upper portions of spray column set up shower head 9, shower head 9 sets up on spray header 8, pond 11 is connected to the 8 other ends of spray header, pond 11 is located 7 inner chambers bottom of spray column, spray header 8 still is provided with water pump 12.
More specifically, the other end of the integrated collecting pipe 6 is communicated with a crystallization section 1, a suction filtration section 2, a polymerization section 3, a hydrolysis carbonization section 4 and a belt filter 5.
More specifically, the crystallization workshop 1, the suction filtration workshop section 2, the polymerization workshop section 3, the hydrolysis carbonization workshop section 4 and the belt filter 5 are all provided with a gas collecting hood, and the integrated collecting pipe 6 is communicated with the crystallization workshop section 1, the suction filtration workshop section 2, the polymerization workshop section 3, the hydrolysis carbonization workshop section 4 and the belt filter 5 through the gas collecting hood.
More specifically, the bottom of the inner cavity of the spray tower 7 is connected with an ammonia water concentration measuring instrument.
More specifically, the bottom of the inner cavity of the spray tower 7 is provided with a water outlet, and the water outlet is provided with a valve switch.
More specifically, a pressing plate 15 is provided on the packing 10.
The working principle is as follows: as shown in fig. 1, a centrifugal fan 13 works to suck ammonia gas in a crystallization section 1, a suction filtration section 2, a polymerization section 3, a hydrolysis carbonization section 4 and a belt filter 5 into an integrated collecting pipe 6 through a gas collecting hood, then the ammonia gas enters a spray tower 7, the ammonia gas containing dust can remove dust impurities in gas phase after passing through a filler 10, meanwhile, a water pump 12 pumps water in a water tank 11 out for spraying by a spray head 9, the spray head 9 sprays water onto the filler 10 and flows down along the surface of the filler 10 to form liquid phase on the surface of the filler 10, the ammonia gas on the surface of the filler 10 is gas phase, a filler pressing plate 15 is arranged above the filler 10 to limit the movement of the filler 10 along with ascending gas flow, the gas phase and the liquid phase are in close contact with each other to carry out mass transfer, a mixed liquid is finally formed to enter the water tank 11, an ammonia water concentration measuring instrument detects ammonia water, opening a valve switch of a water outlet, and conveying ammonia water for recycling; the residual gas in the spray tower 7 enters a centrifugal fan 13 and is finally discharged through a discharge cylinder 14.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. The utility model provides an ammonia purification unit, its characterized in that, includes collecting pipe (6), spray column (7), centrifugal fan (13), emission cylinder (14), collecting pipe (6) one end intercommunication spray column (7) inner chamber lower part, spray column (7) top intercommunication centrifugal fan (13), centrifugal fan (13) intercommunication emission cylinder (14), spray column (7) inner chamber middle part sets up filler (10), spray column (7) inner chamber upper portion sets up shower head (9), shower head (9) set up on spray header (8), pond (11) are connected to spray header (8) other end, pond (11) are located spray column (7) inner chamber bottom, spray header (8) still are provided with water pump (12).
2. The ammonia gas purification treatment device according to claim 1, wherein the other end of the integrated collecting pipe (6) is communicated with the crystallization section (1), the suction filtration section (2), the polymerization section (3), the hydrolysis carbonization section (4) and the belt filter (5).
3. The ammonia gas purification treatment device according to claim 2, wherein the crystallization section (1), the suction filtration section (2), the polymerization section (3), the hydrolysis carbonization section (4) and the belt filter (5) are all provided with a gas collecting hood, and the integrated collecting pipe (6) is communicated with the crystallization section (1), the suction filtration section (2), the polymerization section (3), the hydrolysis carbonization section (4) and the belt filter (5) through the gas collecting hood.
4. The ammonia gas purification treatment device according to claim 1, wherein the bottom of the inner cavity of the spray tower (7) is connected with an ammonia water concentration measuring instrument.
5. The ammonia gas purification treatment device according to claim 1, wherein a water outlet is arranged at the bottom of the inner cavity of the spray tower (7), and a valve switch is arranged on the water outlet.
6. An ammonia gas purification treatment device as defined in claim 1, characterized in that a pressure plate (15) is provided on the packing (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110304799.3A CN112915732A (en) | 2021-03-23 | 2021-03-23 | Ammonia purification treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110304799.3A CN112915732A (en) | 2021-03-23 | 2021-03-23 | Ammonia purification treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112915732A true CN112915732A (en) | 2021-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110304799.3A Pending CN112915732A (en) | 2021-03-23 | 2021-03-23 | Ammonia purification treatment device |
Country Status (1)
| Country | Link |
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| CN (1) | CN112915732A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115228902A (en) * | 2022-07-21 | 2022-10-25 | 洋耳科技(杭州)有限公司 | Skid-mounted hazardous waste and solid waste treatment equipment and method |
| CN115286011A (en) * | 2022-07-21 | 2022-11-04 | 宁夏嘉峰化工有限公司 | Efficient and energy-saving cyanamide recovery process and system |
-
2021
- 2021-03-23 CN CN202110304799.3A patent/CN112915732A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115228902A (en) * | 2022-07-21 | 2022-10-25 | 洋耳科技(杭州)有限公司 | Skid-mounted hazardous waste and solid waste treatment equipment and method |
| CN115286011A (en) * | 2022-07-21 | 2022-11-04 | 宁夏嘉峰化工有限公司 | Efficient and energy-saving cyanamide recovery process and system |
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