CN108392910B - Comprehensive recovery system for phosphorization tail gas of filter shell - Google Patents
Comprehensive recovery system for phosphorization tail gas of filter shell Download PDFInfo
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- CN108392910B CN108392910B CN201810103072.7A CN201810103072A CN108392910B CN 108392910 B CN108392910 B CN 108392910B CN 201810103072 A CN201810103072 A CN 201810103072A CN 108392910 B CN108392910 B CN 108392910B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
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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
- B01D53/002—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 condensation
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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
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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
- B01D53/1406—Multiple stage absorption
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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
- B01D53/1456—Removing acid components
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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
- B01D2257/402—Dinitrogen oxide
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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
- B01D2257/404—Nitrogen oxides other than dinitrogen oxide
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- 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
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/10—Capture or disposal of greenhouse gases of nitrous oxide (N2O)
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
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- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention discloses a comprehensive recovery system for phosphorized tail gas of a filter shell, which relates to the technical field of filter production and mainly comprises a dust removal device, a recovery tower, a primary absorption tower, a secondary absorption tower, a first nozzle, a second nozzle, a first pinhole plate, a packing layer, a lye tank and the like. According to the invention, dust in the phosphated tail gas is removed through the dust removal device, so that the tail gas conveying pipeline is prevented from being blocked due to long-term use, and the subsequent tail gas treatment is facilitated; then acid spraying treatment is carried out on the phosphatized tail gas through a recovery tower, and since acid mist in the phosphatized tail gas is recovered by adopting an acid solution, the recovered solution can be recycled for phosphating the filter shell, so that the production cost and resources are saved; removing residual acid mist and nitrogen dioxide in the recovered and treated phosphatized tail gas through a primary absorption tower; finally removing nitric oxide in the tail gas through a secondary absorption tower; the tail gas is purified thoroughly, and the purified tail gas meets the national emission standard.
Description
Technical Field
The invention relates to the technical field of filter production, in particular to a comprehensive recovery system for phosphated tail gas of a filter shell.
Background
The surface of the shell needs to be phosphated in the production process of the filter to form a phosphating film, so that the metal shell is protected and the metal is prevented from being corroded. When the filter shell is phosphorized, the shell needs to be immersed into a phosphorizing liquid, and a large amount of acid mist is generated in the phosphorizing process because the phosphorizing liquid is an acidic dilute aqueous solution. In addition, nitrogen oxides are generated in the process of phosphorization, have certain toxicity, are not beneficial to the health of production personnel, and have great harm effect on the environment, and are one of main substances for forming acid rain, important substances for forming photochemical smog in the atmosphere and an important factor for consuming O3. Consequently need discharge again after the bonderizing tail gas treatment, current bonderizing tail gas cleanup unit mostly sprays tail gas, can not retrieve volatile acid gas, has caused the wasting of resources, and tail gas purifying effect is poor, is unfavorable for the environmental protection. The invention aims to solve the technical problem of how to design a comprehensive recycling system for phosphorized tail gas of a filter shell, which has a good purifying effect and can recycle acid mist.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the comprehensive recovery system for the phosphorized tail gas of the filter shell, which has a good purification effect and can recover acid mist.
The invention solves the technical problems through the following technical means:
a comprehensive recycling system for phosphorized tail gas of a filter shell comprises a dust removal device, a recycling tower, a primary absorption tower and a secondary absorption tower, wherein the dust removal device comprises a dust removal box body, the lower part of the dust removal box body is provided with an ash bucket, the side wall of the ash bucket is provided with a dust removal device air inlet, a transversely arranged baffle is arranged in the dust removal box body, the baffle divides the dust removal box body into an upper chamber and a lower chamber, a plurality of filter bags are arranged on the lower surface of the baffle, a dust removal device air outlet is arranged at the upper end of the dust removal box body and communicated with the upper chamber, the dust removal device air outlet is connected with an induced draft fan through a pipeline, a recycling tower air inlet is arranged on the recycling tower, the induced draft fan is communicated with the recycling tower air inlet through a pipeline, a condensing coil is arranged on the recycling tower, and an acidic solution spray, the acid solution spray head is communicated with an external liquid supply pipe, a plurality of first perforated plates which are arranged up and down are arranged in the recovery tower, the air inlet of the recovery tower is positioned at the lower part of the first perforated plate at the lowest end, the bottom of the recovery tower is connected with a collector, the top of the recovery tower is provided with a gas outlet of the recovery tower, the first-stage absorption tower is provided with a first-stage absorption tower air inlet, the gas outlet of the recovery tower is connected with the first-stage absorption tower air inlet through a pipeline, the inside of the first-stage absorption tower is provided with a clear water spray head which is communicated with an external water supply system, the inside of the first-stage absorption tower is also provided with a packing layer, the packing layer is positioned at the lower part of the clear water spray head, the bottom of the first-stage absorption tower is provided with a first liquid collecting tank, the air inlet, the upper end of the fixed plate is provided with a lye tank, both ends of the fixed plate are provided with a plurality of air passing pipes, one end of the air passing pipe is communicated with the lower surface of the fixing plate, the other end of the air passing pipe is sunk into the bottom of the alkali lye tank, the top end of the first-stage absorption tower is provided with a first-stage absorption tower air outlet, the second-stage absorption tower is provided with a second-stage absorption tower air inlet, the gas outlet of the first-stage absorption tower is connected with the gas inlet of the second-stage absorption tower through a pipeline, a urea spray head is arranged in the second-stage absorption tower, the urea spray head is communicated with an external urea solution supply pipe, a plurality of second needle hole plates which are arranged up and down are arranged at the lower part of the urea spray head of the secondary absorption tower, the bottom of the second-stage absorption tower is provided with a second liquid collecting tank, the air inlet of the second-stage absorption tower is positioned between the second needle hole plate at the lowest end and the second liquid collecting tank, and the top of the second-stage absorption tower is provided with an air outlet.
Preferably, a filter casing bonderizing tail gas integrated recovery system, the baffle on be provided with a plurality of air vents, every air vent on all correspond install the breather pipe of a vertical setting, the lower extreme and the filter bag intercommunication of breather pipe, the upper end and the last cavity intercommunication of breather pipe.
Preferably, the comprehensive recycling system for phosphorized tail gas of the filter shell is characterized in that the packing layer is a PP multi-face hollow ball packing layer, and third perforated plates are arranged on the upper surface and the lower surface of the packing layer.
Preferably, a filter casing bonderizing tail gas integrated recovery system, the tower body of one-level absorption tower and second grade absorption tower all comprises by a plurality of sections that supreme connect gradually through the flange down, just the tower body is polyvinyl chloride, polypropylene or glass steel material, all cover on the inner wall of first collecting tank and second collecting tank and have the polyurea anticorrosive coating.
Preferably, the comprehensive recycling system for phosphorized tail gas of the filter shell is characterized in that the acidic solution spray head, the clear water spray head and the urea spray head are all spiral spray heads.
The invention has the advantages that: according to the comprehensive recovery system for the phosphorized tail gas of the filter shell, the dust in the phosphorized tail gas is removed through the dust removal device, so that the tail gas conveying pipeline is prevented from being blocked due to long-term use, and meanwhile, the subsequent tail gas treatment is facilitated; then acid spraying treatment is carried out on the phosphatized tail gas through a recovery tower, and since acid mist in the phosphatized tail gas is recovered by adopting an acid solution, the recovered solution can be recycled for phosphating the filter shell, so that the production cost and resources are saved; removing residual acid mist and nitrogen dioxide in the recovered and treated phosphatized tail gas through a primary absorption tower; finally removing nitric oxide in the tail gas through a secondary absorption tower; the tail gas is thoroughly purified and meets the national emission standard after purification
Furthermore, the packing layer is a PP multi-face hollow ball packing layer, the contact area of liquid and tail gas in the packing layer is increased, the tail gas and the liquid are fully contacted in the packing layer, the absorption effect of the liquid is improved, the second pinhole plates are arranged on the upper surface and the lower surface of the packing layer, the lower pinhole plate has a gas distribution effect on the tail gas, the upper pinhole plate plays a water distribution effect, the tail gas and the liquid are uniformly distributed in the packing layer, and the absorption capacity of the liquid is enhanced.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic view of the structure of the lye tank of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model provides a filter casing bonderizing tail gas comprehensive recovery system, includes dust collector, recovery tower 1, one-level absorption tower 2 and second grade absorption tower 3, dust collector include dust removal box 4, the lower part of dust removal box 4 is provided with ash bucket 5, the lateral wall of ash bucket 5 is provided with dust collector air inlet 6, the inside of dust removal box 4 is provided with a baffle 7 that transversely sets up, baffle 7 divide into upper chamber 8 and lower chamber 9 with the dust removal box, install a plurality of filter bags 10 on the lower surface of baffle 7, the upper end of dust removal box 4 is provided with dust collector gas outlet 11, dust collector gas outlet 11 and upper chamber 8 intercommunication, dust collector gas outlet 11 pass through pipeline and draught fan 12 and connect, recovery tower 1 on be provided with recovery tower air inlet 13, draught fan 12 pass through pipeline and recovery tower air inlet 13 intercommunication, the recycling tower is characterized in that a condensing coil pipe 14 is arranged on the recycling tower 1, an acid solution spray head 15 is arranged in the recycling tower 1, the acid solution spray head 15 is communicated with an external liquid supply pipe, a plurality of first perforated plates 16 which are arranged up and down are arranged in the recycling tower 1, a recycling tower air inlet 13 is positioned at the lower part of the first perforated plate 16 at the lowest end, the bottom of the recycling tower 1 is connected with a collector 17, a recycling tower air outlet 18 is arranged at the top of the recycling tower 1, a primary absorption tower air inlet 19 is arranged on the primary absorption tower 2, the recycling tower air outlet 18 is connected with the primary absorption tower air inlet 19 through a pipeline, a clear water spray head 20 is arranged in the primary absorption tower 2, the clear water spray head 20 is communicated with an external water supply system, a packing layer 21 is also arranged in the primary absorption tower 2, and the packing layer 21 is positioned, the bottom of the first-level absorption tower 2 is provided with a first liquid collecting tank 22, the first-level absorption tower air inlet 19 is positioned between a packing layer 21 and the first liquid collecting tank 22, the inside of the first-level absorption tower 2 is also provided with a fixing plate 23, the upper end of the fixing plate 23 is provided with a lye tank 24, both ends of the fixing plate 23 are provided with a plurality of air passing pipes 25, one end of each air passing pipe 25 is communicated with the lower surface of the fixing plate 23, the other end of each air passing pipe 25 sinks into the bottom of the lye tank 24, the top end of the first-level absorption tower 2 is provided with a first-level absorption tower air outlet 26, the second-level absorption tower 3 is provided with a second-level absorption tower air inlet 27, the first-level absorption tower air outlet 26 is connected with the second-level absorption tower air inlet 27 through a pipeline, the second-, the second-stage absorption tower 3 is provided with a plurality of second needle hole plates 29 which are arranged up and down at the lower part of the urea spray nozzle 28, the bottom of the second-stage absorption tower 3 is provided with a second liquid collecting tank 30, the second-stage absorption tower air inlet 27 is positioned between the second needle hole plate 29 at the lowest end and the second liquid collecting tank 30, and the top of the second-stage absorption tower 3 is provided with an air outlet 31.
The phosphorization tail gas of the filter enters a lower chamber of the dust removal device from an air inlet of the dust removal device, enters an upper chamber after being filtered by a filter bag, is conveyed to a recovery tower through an induced draft fan, an acid solution is sprayed on the phosphorization tail gas through an acid solution spray head in the recovery tower to absorb acid mist in the phosphorization tail gas, a condensation pipe is arranged outside the recovery tower to facilitate the recovery of the acid mist, the sprayed solution is collected by a collector, the phosphorization tail gas treated by the recovery tower enters a primary absorption tower, the phosphorization tail gas is firstly subjected to tertiary absorption in the primary absorption tower, the first stage is the spray absorption of water flowing out from a pinhole plate at the lower part of a filling layer on the tail gas, the second stage is the absorption of water in the filling layer on the phosphorization tail gas, the third stage is the spray absorption of clear water spray nozzle on the tail gas, and after the tertiary absorption of the phosphorization tail gas by water, the contents, the phosphorization tail gas after three-stage absorption is introduced into a lye tank, acid mist and nitrogen dioxide in the phosphorization tail gas are thoroughly removed, the tail gas purified by a primary absorption tower is introduced into a secondary absorption tower, and nitric oxide in the phosphorization tail gas is thoroughly removed by absorbing the nitric oxide in the phosphorization tail gas through a urea solution sprayed by a second nozzle, so that the phosphorization tail gas is thoroughly purified; according to the filter housing phosphorization tail gas treatment system, dust in the phosphorization tail gas is removed through the dust removal device, the tail gas conveying pipeline is prevented from being blocked due to long-time use, and meanwhile, the subsequent tail gas treatment is facilitated; then removing acid mist and nitrogen dioxide in the tail gas through a primary absorption tower; finally removing nitric oxide in the tail gas through a secondary absorption tower; the tail gas is purified thoroughly, and the purified tail gas meets the national emission standard.
Preferably, the partition plate 7 is provided with a plurality of vent holes (not shown in the figure), each vent hole is correspondingly provided with a vertically arranged vent pipe 32, the lower end of the vent pipe 32 is communicated with the filter bag 10, and the upper end of the vent pipe 32 is communicated with the upper chamber 8.
The upper cavity and the lower cavity are communicated through the vent pipe, the filter bag is installed on the vent pipe, the structure is simple, blockage cannot occur, and the filtering effect is good.
Preferably, the packing layer 21 is a PP multi-surface hollow sphere packing layer, and the upper and lower surfaces of the packing layer 21 are provided with third perforated plates 33.
The packing layer is a PP multi-face hollow ball packing layer, the contact area of liquid and tail gas in the packing layer is increased, the tail gas and the liquid are fully contacted in the packing layer, the absorption effect of the liquid is improved, third needle hole plates are arranged on the upper surface and the lower surface of the packing layer, the lower needle hole plate has a gas distribution effect on the tail gas, the upper needle hole plate plays a water distribution effect, the tail gas and the liquid are uniformly distributed in the packing layer, and the absorption capacity of the liquid is enhanced.
Preferably, the tower bodies of the first-stage absorption tower 2 and the second-stage absorption tower 3 are composed of a plurality of sections which are sequentially connected through flanges from bottom to top, the tower bodies are made of polyvinyl chloride, polypropylene or glass fiber reinforced plastic, and polyurea anti-corrosion layers are coated on the inner walls of the first liquid collecting tank and the second liquid collecting tank.
The tower body is high in strength and good in corrosion resistance, the inner walls of the first liquid collecting tank and the second liquid collecting tank are coated with polyurea anti-corrosion layers, the corrosion resistance effect of the liquid collecting tanks is enhanced, and the service life of equipment is prolonged.
Preferably, the acid solution nozzle 15, the clean water nozzle 20 and the urea nozzle 28 are all spiral nozzles.
The clear water shower nozzle and urea shower nozzle all establish to spiral shower nozzle, can improve the homogeneity and the area of spraying of hydrojet, and then improve the area of contact of bonderizing tail gas and spun liquid, strengthen the absorption effect of liquid.
According to the comprehensive recovery system for the phosphorized tail gas of the filter shell, the dust in the phosphorized tail gas is removed through the dust removal device, so that the tail gas conveying pipeline is prevented from being blocked due to long-term use, and meanwhile, the subsequent tail gas treatment is facilitated; then acid spraying treatment is carried out on the phosphatized tail gas through a recovery tower, and since acid mist in the phosphatized tail gas is recovered by adopting an acid solution, the recovered solution can be recycled for phosphating the filter shell, so that the production cost and resources are saved; removing residual acid mist and nitrogen dioxide in the recovered and treated phosphatized tail gas through a primary absorption tower; finally removing nitric oxide in the tail gas through a secondary absorption tower; the tail gas is thoroughly purified and meets the national emission standard after being purified; furthermore, the packing layer is a PP multi-face hollow ball packing layer, the contact area of liquid and tail gas in the packing layer is increased, the tail gas and the liquid are fully contacted in the packing layer, the absorption effect of the liquid is improved, the second pinhole plates are arranged on the upper surface and the lower surface of the packing layer, the lower pinhole plate has a gas distribution effect on the tail gas, the upper pinhole plate plays a water distribution effect, the tail gas and the liquid are uniformly distributed in the packing layer, and the absorption capacity of the liquid is enhanced.
It is noted that, in this document, relational terms such as first and second, and the like, if any, 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. Also, 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 an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. The utility model provides a recovery system is synthesized to filter casing bonderizing tail gas which characterized in that: including dust collector, recovery tower, one-level absorption tower and second grade absorption tower, dust collector include the dust removal box, the lower part of dust removal box is provided with the ash bucket, the lateral wall of ash bucket is provided with the dust collector air inlet, the inside of dust removal box is provided with the baffle of a horizontal setting, the baffle divide into cavity and lower cavity with the dust removal box, install a plurality of filter bags on the lower surface of baffle, the upper end of dust removal box is provided with the dust collector gas outlet, dust collector gas outlet and upper cavity intercommunication, the dust collector gas outlet pass through the pipeline and the draught fan is connected, the recovery tower on be provided with the recovery tower air inlet, the draught fan pass through pipeline and recovery tower air inlet intercommunication, the recovery tower on be provided with the condensation coil pipe, the recovery tower in be provided with the acid solution shower nozzle, acid solution shower nozzle and outside feed pipe intercommunication, the device comprises a recovery tower, a plurality of first pinhole plates arranged up and down are arranged in the recovery tower, a recovery tower air inlet is positioned at the lower part of the first pinhole plate at the lowest end, the bottom of the recovery tower is connected with a collector, a recovery tower air outlet is arranged at the top of the recovery tower, a primary absorption tower air inlet is arranged on the primary absorption tower, the recovery tower air outlet is connected with a primary absorption tower air inlet through a pipeline, a clear water spray head is arranged inside the primary absorption tower and communicated with an external water supply system, a packing layer is also arranged inside the primary absorption tower and positioned at the lower part of the clear water spray head, a first liquid collecting tank is arranged at the bottom of the primary absorption tower, the primary absorption tower air inlet is positioned between the packing layer and the first liquid collecting tank, a fixed plate is also arranged inside the primary absorption tower, and an alkaline solution tank is arranged, the both ends of fixed plate all set up a plurality of trachea of crossing, cross tracheal one end and the lower surface intercommunication of fixed plate, cross tracheal other end and sink into the lye tank bottom, the top of one-level absorption tower is provided with one-level absorption tower gas outlet, be provided with the second grade absorption tower air inlet on the second grade absorption tower, the one-level absorption tower gas outlet passes through the pipeline and is connected with the second grade absorption tower air inlet, be provided with the urea shower nozzle in the second grade absorption tower, urea shower nozzle and outside urea solution supply pipe intercommunication, the second grade absorption tower is provided with the second pinhole board that sets up from top to bottom in urea shower nozzle lower part position, the bottom of second grade absorption tower is provided with the second collecting tank, the second grade absorption tower air inlet be located between second pinhole board and the second collecting tank of lower extreme, the top of second grade absorption tower is provided with.
2. The comprehensive recovery system for phosphorized tail gas of the filter shell according to claim 1, characterized in that: the partition board is provided with a plurality of vent holes, each vent hole is correspondingly provided with a vertically arranged vent pipe, the lower end of each vent pipe is communicated with the filter bag, and the upper end of each vent pipe is communicated with the upper chamber.
3. The comprehensive recovery system for phosphorized tail gas of the filter shell according to claim 1, characterized in that: the packing layer is a PP multi-face hollow ball packing layer, and third pinhole plates are arranged on the upper surface and the lower surface of the packing layer.
4. The comprehensive recovery system for phosphorized tail gas of the filter shell according to claim 1, characterized in that: the tower body of one-level absorption tower and second grade absorption tower all comprises by a plurality of sections that supreme connect gradually through the flange down, just the tower body is polyvinyl chloride, polypropylene or glass steel material, all cover on the inner wall of first collecting tank and second collecting tank and have the polyurea anticorrosive coating.
5. The comprehensive recovery system for phosphorized tail gas of the filter shell according to claim 1, characterized in that: the acid solution spray head, the clear water spray head and the urea spray head are all spiral spray heads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810103072.7A CN108392910B (en) | 2018-02-01 | 2018-02-01 | Comprehensive recovery system for phosphorization tail gas of filter shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810103072.7A CN108392910B (en) | 2018-02-01 | 2018-02-01 | Comprehensive recovery system for phosphorization tail gas of filter shell |
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| Publication Number | Publication Date |
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| CN108392910A CN108392910A (en) | 2018-08-14 |
| CN108392910B true CN108392910B (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810103072.7A Active CN108392910B (en) | 2018-02-01 | 2018-02-01 | Comprehensive recovery system for phosphorization tail gas of filter shell |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113230801A (en) * | 2021-05-14 | 2021-08-10 | 吕存英 | Dust clearance system based on artificial intelligence |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5512072A (en) * | 1994-12-05 | 1996-04-30 | General Electric Environmental Services, Inc. | Flue gas scrubbing apparatus |
| KR20030088226A (en) * | 2002-05-13 | 2003-11-19 | (주)대성그린테크 | Biofilter system for offensive odor and volatile oraganic compounds treatment |
| CN203155025U (en) * | 2013-03-19 | 2013-08-28 | 彭兰娟 | Smoke dust removal device |
| CN203564953U (en) * | 2013-09-07 | 2014-04-30 | 天津万广科技有限公司 | Acid mist purification tower |
-
2018
- 2018-02-01 CN CN201810103072.7A patent/CN108392910B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5512072A (en) * | 1994-12-05 | 1996-04-30 | General Electric Environmental Services, Inc. | Flue gas scrubbing apparatus |
| KR20030088226A (en) * | 2002-05-13 | 2003-11-19 | (주)대성그린테크 | Biofilter system for offensive odor and volatile oraganic compounds treatment |
| CN203155025U (en) * | 2013-03-19 | 2013-08-28 | 彭兰娟 | Smoke dust removal device |
| CN203564953U (en) * | 2013-09-07 | 2014-04-30 | 天津万广科技有限公司 | Acid mist purification tower |
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| Publication number | Publication date |
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| CN108392910A (en) | 2018-08-14 |
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