CN214289909U - Air draft system for producing alkaline etching solution - Google Patents
Air draft system for producing alkaline etching solution Download PDFInfo
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- CN214289909U CN214289909U CN202120055826.3U CN202120055826U CN214289909U CN 214289909 U CN214289909 U CN 214289909U CN 202120055826 U CN202120055826 U CN 202120055826U CN 214289909 U CN214289909 U CN 214289909U
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- ammonia recovery
- recovery subsystem
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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
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The utility model provides an exhaust system for production of alkaline etching liquid, including the production groove, be arranged in ammonia recovery unit and the tail gas exhaust pipe that contain among the ammonia tail gas that produces and send goods in-process, ammonia recovery unit include two and more than two ammonia recovery subsystems, each ammonia recovery subsystem interconnect, ammonia recovery unit's the first ammonia recovery subsystem the access opening pass through tuber pipe one and be connected with the production groove, ammonia recovery unit's last ammonia recovery subsystem's delivery outlet and tail gas exhaust pipe be connected, be equipped with infinitely variable speed fan behind first ammonia recovery subsystem. After the infinitely variable transmission capable of infinitely variable speed is mounted on the fan, in the production process, the air draft intensity can be adjusted at will according to the production and loading requirements, the requirement for full absorption of tail gas is met, ammonia gas as a production raw material is not wasted, the production cost is reduced, the practicability is high, and the whole system is energy-saving and environment-friendly.
Description
Technical Field
The utility model relates to an etching solution production technical field especially relates to an exhaust system for production of alkaline etching solution.
Background
Use liquid ammonia as raw and other materials in the alkaline etching liquid production process, ammonia is a gas that volatility is extremely strong and have pungent smell, and the ammonia leaks and can cause comparatively serious environmental pollution in the air, to this, the applicant has researched and developed a recycle system who contains ammonia tail gas, and the patent number is: CN201720121750.3, entitled "a tertiary ammonia-containing tail gas recycle system", adopts tertiary tail gas absorption system to carry out tail gas treatment in the process of producing alkaline etching solution, can reach fine effect. The whole production process of the alkaline etching solution is long, generally lasts for about 4 hours, the ammonia concentration in the production tank gradually rises during the production process, but due to the existence of the tail gas recycling device, the production tank is always in a negative pressure state in the production process, so that the ammonia loss is serious, the waste of raw materials is caused, and the production cost is increased.
The liquid medicine of alkaline etching liquid is transferred from storing the bucket to the tank of delivery car in the in-process of loading through the pump machine, leads to a large amount of volatilizees of ammonia because of the motion of liquid medicine. In order to collect leaked ammonia gas, a delivery hole is formed in a delivery tank of some transport vehicles to be in butt joint with a delivery pipe of a storage tank, so that a cover on the top of the delivery tank does not need to be opened in the process of loading the transport vehicles, and excessive ammonia gas is prevented from volatilizing.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides an exhaust system for production of alkaline etching solution has effectively solved current apparatus for producing technical problem such as ammonia loss is big, manufacturing cost is high, the loading in-process ammonia easily leaks, easily causes environmental pollution.
The utility model provides an exhaust system for production of alkaline etching liquid, including production groove, ammonia recovery unit and tail gas exhaust pipe, ammonia recovery unit include two and the ammonia recovery subsystems more than two, each ammonia recovery subsystem interconnect, ammonia recovery unit's the first ammonia recovery subsystem's of access mouth pass through tuber pipe one and be connected with the production groove, ammonia recovery unit's last ammonia recovery subsystem's delivery outlet and tail gas exhaust pipe be connected, be equipped with infinitely variable speed fan behind first ammonia recovery subsystem, first ammonia recovery subsystem in the absorption liquid that uses be the clear water, the absorption liquid that uses in the ammonia recovery subsystem except that first ammonia recovery subsystem is dilute hydrochloric acid.
Preferably, the air volume adjusting value of the infinitely variable speed fan to the whole air suction system is 0-10000 (cubic meter per hour).
Preferably, the continuously variable transmission fan comprises a fan and a continuously variable transmission, and the continuously variable transmission is mounted on the fan.
Preferably, a first absorption device for absorbing exposed gas in the loading process of the transport vehicle is arranged between the production tank and the first ammonia gas recovery subsystem.
Preferably, the first absorption device comprises a first air suction pipe and an air suction opening, the air suction opening is horn-shaped, one end of the first air suction pipe is connected with the first air pipe, and the other end of the first air suction pipe is connected with the air suction opening in a matching mode.
Preferably, the diameter of the first air suction pipe is 180 cm-220 cm, the maximum caliber of the air suction opening is 750 cm-850 cm, and the minimum diameter of the air suction opening is matched with the diameter of the first air suction pipe.
Preferably, the first air pipe has a diameter of 400 cm-450 cm.
Preferably, the number of the ammonia recovery subsystems is four, the ammonia recovery subsystems are a first ammonia recovery subsystem, a second ammonia recovery subsystem, a third ammonia recovery subsystem and a fourth ammonia recovery subsystem respectively, and the four ammonia recovery subsystems are connected in sequence.
Preferably, a second absorption device for absorbing exposed gas in the loading process of the transport vehicle is arranged between the first ammonia gas recovery subsystem and the second ammonia gas recovery subsystem.
Preferably, the second absorption device is a second exhaust pipe, and the diameter of the second exhaust pipe is 250-350 cm.
The utility model provides an exhaust system for alkaline etching solution production, which can adjust the exhaust intensity arbitrarily according to the requirements of production and loading in the production process after a continuously variable transmission is arranged on a fan, can meet the requirement of full absorption of tail gas, can not waste ammonia gas as a production raw material, reduces the production cost and has strong practicability; different absorption devices are arranged aiming at different transport vehicles, especially for transport vehicles which are not modified, the top cover of the transport vehicle can be effectively covered by the arrangement of the horn-shaped air suction opening, the tail gas is effectively prevented from leaking, the tail gas can be recycled, and the maximum utilization of resources is realized under the condition of avoiding environmental pollution; the four-level ammonia recovery subsystem can absorb ammonia gas generated in the production and loading processes with the maximum efficiency, and the whole system is energy-saving and environment-friendly.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.
Fig. 1 is a schematic view of the overall structure of the present invention.
Wherein: 1, a production tank; 2 an ammonia gas recovery device; 3, a tail gas exhaust pipe; 4 ammonia recovery subsystem; 41 an absorption tower; 411 air inlet holes; 412 an outlet hole; 413 an air outlet; 414 liquid inlet hole; 415 a multi-faceted ball; 416 a viewing aperture; 42 auxiliary grooves; 421 liquid medicine concentration detector; 422 a liquid medicine output component; 4221 liquid medicine output pump; 4222 a liquid medicine output pipe; 43 circulating pump; 5, a first air pipe; a stepless speed change fan 6; 61 fan; 62 continuously variable transmission; 7 a first absorption device; 71 an exhaust pipe I; 72 air suction openings; a second absorption means 8.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example one
As shown in attached figure 1, the utility model provides an air draft system for producing alkaline etching solution, which comprises a production tank 1, an ammonia gas recovery device 2 and a tail gas exhaust pipe 3, the ammonia recovery device is used for collecting ammonia tail gas generated in the production tank and comprises two or more ammonia recovery subsystems 4 which are connected with each other, the inlet of the first ammonia recovery subsystem of the ammonia recovery device is connected with the production tank through a first air pipe 5, the diameter of the first air pipe is 400 cm-450 cm, in this embodiment, the diameter of the first air pipe is 420cm, the outlet of the last ammonia recovery subsystem of the ammonia recovery device is connected with the exhaust gas pipe, and the exhaust port of the exhaust gas pipe 3 is 15 meters above the ground, so that the arrangement of the exhaust gas pipe meets the requirements in the industry. In this embodiment, the ammonia recovery subsystem is four, is first ammonia recovery subsystem, second ammonia recovery subsystem, third ammonia recovery subsystem and fourth ammonia recovery subsystem respectively, and four ammonia recovery subsystems connect gradually, and the access mouth of first ammonia recovery subsystem passes through tuber pipe one and is connected with the production tank promptly, the delivery outlet and the tail gas exhaust pipe of fourth ammonia recovery subsystem be connected.
An infinitely variable speed fan 6 is arranged between the first ammonia recovery subsystem and the second ammonia recovery subsystem, the absorption liquid used in the first ammonia recovery subsystem is clear water, the absorption liquid used in the ammonia recovery subsystems except the first ammonia recovery subsystem is dilute hydrochloric acid, namely the absorption liquid used in the second ammonia recovery subsystem, the third ammonia recovery subsystem and the fourth ammonia recovery subsystem is dilute hydrochloric acid. In the system, the continuously variable transmission fan 6 comprises a fan 61 and a continuously variable transmission 62, the continuously variable transmission is mounted on the fan, the air draft of the whole air draft system can be dynamically and continuously controlled through the arrangement of the continuously variable transmission, and the air volume adjusting value of the continuously variable transmission fan to the whole air draft system is 0-10000 (square meters per hour). In the using process, the air suction amount can be controlled by adjusting the infinitely variable speed fan according to the requirements of production and loading processes, so that the loss of the raw material ammonia gas is reduced.
And a first absorption device 7 for absorbing exposed gas in the loading process of the transport vehicle is arranged between the production tank and the first ammonia gas recovery subsystem. This first absorbing device 7 includes first exhaust column 71 and suction opening 72, the suction opening be the loudspeaker form, the one end and the tuber pipe of first exhaust column be connected, the other end and the suction opening accordant connection of first exhaust column, the top cap that the suction opening can effectual cover haulage vehicle effectively prevents that tail gas from leaking. The diameter of the first air suction pipe is 180 cm-220 cm, in this embodiment, the diameter of the first air suction pipe is 200cm, the maximum caliber of the air suction opening is 800cm, and the minimum diameter of the air suction opening is matched with the diameter of the first air suction pipe.
And a second absorption device 8 for absorbing the exposed gas in the loading process of the transport vehicle is arranged between the first ammonia gas recovery subsystem and the second ammonia gas recovery subsystem, the second absorption device is a second exhaust pipe, the diameter of the second exhaust pipe is 250 cm-350 cm, and in the embodiment, the diameter of the second exhaust pipe is 300 cm. The first absorption device and the second absorption device can be arranged independently or simultaneously, and different absorption devices can be selected according to different structures of the carrying vehicles in the using process. For example, for the transport tank of the transport vehicle, which is provided with a cargo inlet for butt joint with a cargo outlet pipe of the storage tank, only the second absorption device is arranged, and the second absorption device is adopted for gas absorption of the transport vehicle; when the cover of the transport tank top must be opened during the loading process of the transport vehicle, the first absorption device is adopted to absorb gas for the transport vehicle.
Alkaline etching solution produces in the production tank, this production tank includes and just is used for adding the production tank water injection pipe of water injection toward the production tank with the outside pipeline intercommunication, an ammonia filler pipe that is used for making ammonia and liquid medicine mix toward the ammonia of injecting into the production tank, a production tank liquid suction pipe that is used for taking out the etching solution in the production tank from the production tank, a material charge door for adding the manufacturing raw materials in the production tank, a material that is used for stirring in the production tank makes the material can be abundant with the agitator that water mixes and be used for the blast pipe of the tail gas discharge production tank that contains ammonia in the production tank. The three-stage ammonia-containing tail gas recycling system further comprises a PLC control system. The PLC control system is connected with the stirrer and controls the stirrer to work through the PLC control system. The stirrer can be realized by adopting the existing stirrer sold in the market.
The ammonia gas recovery subsystem 4 includes an absorption tower 41 for absorbing ammonia gas in the ammonia-containing tail gas, a sub-tank 42 communicating with the absorption tower 41, and a circulation pump 43 disposed between the sub-tank and the absorption tower. The absorption tower 41 is provided with a closed absorption chamber therein. The absorption tower 41 comprises an air inlet hole 411 and an outlet hole 412 which are arranged at the lower part of the absorption tower, an air outlet hole 413 which is arranged at the top of the absorption tower, an air inlet hole 414 which is arranged at the upper side wall of the absorption tower and a multi-surface ball 415 which is filled in the absorption tower 41. The air inlet holes 411, the liquid outlet holes 412, the air outlet holes 413 and the liquid inlet holes 414 are all communicated with an absorption cavity in the absorption tower. The absorption chamber inside the absorption tower 41 is filled with the polyhedral balls 415, the contact time and the stroke of the absorption liquid and the ammonia-containing tail gas in the absorption tower are increased through the polyhedral balls, and the contact time of the collected ammonia-containing tail gas and the absorption liquid is increased, so that ammonia in the ammonia-containing tail gas can be fully absorbed by the absorption liquid, and the purification efficiency of the ammonia-containing tail gas is improved.
In order to enable the ammonia gas absorbed by the absorption liquid in the absorption tower to be recycled, the liquid outlet 412 of the absorption tower is communicated with the auxiliary groove 42 through a pipeline, the auxiliary groove 42 is communicated with the circulating pump 43 through a pipeline, and the circulating pump 43 is communicated with the liquid inlet of the absorption tower 41, so that the absorption liquid after absorbing the ammonia gas can be recycled. The auxiliary tank 2 is a liquid medicine tank or a liquid medicine barrel used for storing and absorbing ammonia gas, so that the absorption liquid after absorbing ammonia gas can be temporarily stored in the auxiliary tank. The absorption liquid used in the first ammonia recovery subsystem is clear water, and the absorption liquid used in the second ammonia recovery subsystem, the third ammonia recovery subsystem and the fourth ammonia recovery subsystem is dilute hydrochloric acid. The PCL control system is connected with the circulating pump 43 and controls the circulating pump 43 to work through the PCL control system.
In order to increase the practicability of the four ammonia recovery subsystems, the auxiliary tank 42 further comprises a liquid medicine concentration detector 421 and a liquid medicine output assembly 422, and the liquid medicine concentration detector 421 and the liquid medicine output assembly 422 are both connected with the PLC control system. The liquid medicine concentration detector 421 can be implemented by any of the existing and commercially available liquid medicine concentration detectors for detecting the concentration of liquid. The liquid medicine output assembly 422 comprises a liquid medicine output pump 4221 and a liquid medicine output pipe 4222 which are communicated with the auxiliary groove. The liquid medicine output pipe 4222 of the first ammonia recovery subsystem is communicated with a production tank water injection pipe of the production tank; the liquid medicine output pipe 4222 of the second ammonia recovery subsystem is communicated with the liquid inlet hole 414 of the first ammonia recovery subsystem; the liquid medicine output pipe 4222 of the third ammonia recovery subsystem is communicated with the liquid inlet hole 414 of the second ammonia recovery subsystem; and the liquid medicine output pipe 4222 of the fourth ammonia recovery subsystem is communicated with the liquid inlet hole 414 of the third ammonia recovery subsystem. And the liquid medicine output pumps 4221 in the first ammonia recovery subsystem, the second ammonia recovery subsystem, the third ammonia recovery subsystem and the fourth ammonia recovery subsystem are all connected with the PLC control system. And the liquid medicine output pipes 4222 in the first ammonia gas recovery subsystem, the second ammonia gas recovery subsystem, the third ammonia gas recovery subsystem and the fourth ammonia gas recovery subsystem are respectively provided with a control valve. Control valves on liquid medicine output pipelines in the first ammonia recovery subsystem, the second ammonia recovery subsystem, the third ammonia recovery subsystem and the fourth ammonia recovery subsystem are connected with a PLC control system, when the liquid medicine concentration detector 4421 detects that liquid medicine in absorption liquid of the first ammonia recovery subsystem or the second ammonia recovery subsystem or the third ammonia recovery subsystem or the fourth ammonia recovery subsystem reaches a set rated concentration, the PLC control system controls the control valves to be opened, and controls a liquid medicine output pump to pump the liquid medicine reaching the set rated concentration away from the auxiliary tank, and the liquid medicine enters the production tank or the upper ammonia recovery subsystem 4 for recycling, so that the utilization rate of ammonia is improved.
In order to more conveniently add the absorption liquid for absorbing ammonia into the absorption tower, a liquid inlet hole 414 in the absorption tower is communicated with an external liquid supply pipeline for providing the ammonia absorption liquid into the absorption tower, and the external liquid supply pipeline is provided with an absorption tower control valve connected with the PLC control system, so that when the absorption liquid of the ammonia recovery subsystem 4 reaches the rated concentration and is pumped out of the ammonia recovery subsystem 4, the PLC control system can control the absorption tower control valve to work, so that new absorption liquid can be timely supplemented into the ammonia recovery subsystem 4 to absorb ammonia in the ammonia-containing tail gas.
In order to facilitate observation of the absorption condition of the ammonia-containing tail gas and the absorption liquid absorbed in the absorption tower and monitoring of the working state of the absorption tower, a transparent observation hole 416 is arranged in the middle of the absorption tower 41. The plurality of observation holes 416 are uniformly arranged on the side wall of the absorption tower 41 at equal intervals and communicated with the absorption chamber in the absorption tower.
The utility model provides an exhaust system for alkaline etching solution production, which can adjust the exhaust intensity arbitrarily according to the requirements of production and loading in the production process after a continuously variable transmission is arranged on a fan, can meet the requirement of full absorption of tail gas, can not waste ammonia gas as a production raw material, reduces the production cost and has strong practicability; different absorption devices are arranged aiming at different transport vehicles, especially for transport vehicles which are not modified, the top cover of the transport vehicle can be effectively covered by the arrangement of the horn-shaped air suction opening, the tail gas is effectively prevented from leaking, the tail gas can be recycled, and the maximum utilization of resources is realized under the condition of avoiding environmental pollution; the four-level ammonia recovery subsystem can absorb ammonia gas generated in the production and loading processes with the maximum efficiency, and the whole system is energy-saving and environment-friendly.
The absorption liquid used in the first ammonia recovery subsystem of the four ammonia recovery subsystems is clear water, and the absorption liquid used in the second ammonia recovery subsystem, the third ammonia recovery subsystem and the fourth ammonia recovery subsystem is dilute hydrochloric acid, so that ammonia in the ammonia-containing tail gas can be completely absorbed by the water and the dilute hydrochloric acid, and part of ammonia reacts with the hydrochloric acid to produce ammonium chloride which can be recycled, thereby effectively improving the high ammonia recovery utilization rate, saving the production cost and realizing zero pollution of tail gas emission in the production process of the etching solution; in addition, the absorption tower is filled with the polyhedral balls, so that the contact time of ammonia and absorption liquid in the absorption tower body can be effectively prolonged, the air inlet is arranged at the bottom of the absorption tower body, the liquid inlet hole of the absorption liquid is arranged at the upper end of the absorption tower body, the contact time of the collected ammonia-containing tail gas and the absorption liquid can also be effectively prolonged, the ammonia in the ammonia-containing tail gas can be fully absorbed by water or dilute hydrochloric acid, and the purification efficiency of the ammonia-containing tail gas is improved; meanwhile, the absorption liquid absorbing the ammonia in the ammonia-containing tail gas is pumped into the etching liquid production tank or the previous ammonia recovery subsystem through the liquid medicine output assembly for recycling, so that the absorption liquid can be recycled, the utilization efficiency is improved, the consumption of the absorption liquid is reduced, the production cost is reduced, the economic benefit is improved, the energy-saving and environment-friendly requirements advocated by the nation are met, and the ammonia recovery system is convenient to popularize and use.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An air draft system for producing alkaline etching solution is characterized in that: including production groove (1), ammonia recovery unit (2) and tail gas exhaust pipe (3), ammonia recovery unit include two and ammonia recovery subsystems (4) more than two, each ammonia recovery subsystem interconnect, ammonia recovery unit's the first ammonia recovery subsystem the access mouth pass through tuber pipe one (5) and be connected with the production groove, ammonia recovery unit's last ammonia recovery subsystem the delivery outlet be connected with the tail gas exhaust pipe, be equipped with infinitely variable speed fan (6) behind first ammonia recovery subsystem, first ammonia recovery subsystem in the absorption liquid that uses be the clear water, the absorption liquid that uses in the ammonia recovery subsystem except that first ammonia recovery subsystem is dilute hydrochloric acid.
2. The air draft system for alkaline etching solution production of claim 1, wherein: the air quantity adjusting value of the infinitely variable speed fan to the whole air suction system is 0-10000 (cubic meter per hour).
3. The air draft system for alkaline etching solution production of claim 1, wherein: the continuously variable speed fan (6) comprises a fan (61) and a continuously variable transmission (62), and the continuously variable transmission is installed on the fan.
4. The air draft system for alkaline etching solution production of claim 1, wherein: and a first absorption device (7) for absorbing exposed gas in the loading process of the transport vehicle is arranged between the production tank and the first ammonia gas recovery subsystem.
5. The air draft system for alkaline etching solution production of claim 4, wherein: the first absorption device (7) comprises a first exhaust pipe (71) and an exhaust opening (72), the exhaust opening is horn-shaped, one end of the first exhaust pipe is connected with the first air pipe, and the other end of the first exhaust pipe is connected with the exhaust opening in a matched mode.
6. The air draft system for alkaline etching solution production of claim 5, wherein: the diameter of the first air suction pipe is 180 cm-220 cm, the maximum caliber of the air suction opening is 750 cm-850 cm, and the minimum diameter of the air suction opening is matched with the diameter of the first air suction pipe.
7. The air draft system for alkaline etching solution production of claim 1, wherein: the diameter of the first air pipe is 400-450 cm.
8. The air draft system for producing the alkaline etching solution according to any one of claims 1 to 7, wherein: the number of the ammonia recovery subsystems is four, the ammonia recovery subsystems are respectively a first ammonia recovery subsystem, a second ammonia recovery subsystem, a third ammonia recovery subsystem and a fourth ammonia recovery subsystem, and the four ammonia recovery subsystems are sequentially connected.
9. The air draft system for alkaline etching solution production of claim 8, wherein: and a second absorption device (8) for absorbing the exposed gas in the loading process of the transport vehicle is arranged between the first ammonia gas recovery subsystem and the second ammonia gas recovery subsystem.
10. The air draft system for alkaline etching solution production of claim 9, wherein: the second absorption device is a second exhaust pipe, and the diameter of the second exhaust pipe is 250-350 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120055826.3U CN214289909U (en) | 2021-01-08 | 2021-01-08 | Air draft system for producing alkaline etching solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120055826.3U CN214289909U (en) | 2021-01-08 | 2021-01-08 | Air draft system for producing alkaline etching solution |
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| Publication Number | Publication Date |
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| CN214289909U true CN214289909U (en) | 2021-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120055826.3U Active CN214289909U (en) | 2021-01-08 | 2021-01-08 | Air draft system for producing alkaline etching solution |
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2021
- 2021-01-08 CN CN202120055826.3U patent/CN214289909U/en active Active
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