CN212915090U - Optical fiber perform sintering exhaust treatment system - Google Patents
Optical fiber perform sintering exhaust treatment system Download PDFInfo
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- CN212915090U CN212915090U CN202020874040.XU CN202020874040U CN212915090U CN 212915090 U CN212915090 U CN 212915090U CN 202020874040 U CN202020874040 U CN 202020874040U CN 212915090 U CN212915090 U CN 212915090U
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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
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/68—Halogens or halogen compounds
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- Analytical Chemistry (AREA)
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- Oil, Petroleum & Natural Gas (AREA)
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- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Treating Waste Gases (AREA)
Abstract
The application relates to an optical fiber perform sintering exhaust-gas treatment system, including venturi scrubbing tower (1), filler scrubbing tower (2), recycle tank (3), fan (4), tuber pipe (5) and chimney (6), venturi scrubbing tower (1) is fixed with filler scrubbing tower (2) bottom on recycle tank (3), tuber pipe (5) with venturi scrubbing tower (1) top intercommunication, fan (4) inlet end with the top intercommunication of filler scrubbing tower (2), fan (4) give vent to anger the end with chimney (6) intercommunication, it has the liquid that sprays in venturi scrubbing tower (1), the circulation has the alkali solution in filler scrubbing tower (2). The utility model discloses optical fiber perform sintering exhaust-gas treatment system absorption efficiency is high, adopts the two-stage absorption of venturi scrubbing tower, filler scrubbing tower, ensures that exhaust emissions is less than the strictest national emission standard.
Description
Technical Field
The application belongs to the field of optical fiber production and manufacturing, and particularly relates to an optical fiber preform sintering waste gas treatment system.
Background
The process mode of 'spraying alkaline washing chlorine/dynamic wave scrubber + absorption tower' is mainly adopted for treating waste gas after sintering in the optical fiber preform industry, but in the actual operation process, a plurality of problems exist, such as large occupied area, low absorption efficiency, easy blockage, inconvenience for safety and personnel health and the like. Normally, the pollutant in the gas is chlorine gas, and chlorine-containing waste gas and air from sintering, gas cabinets and the like are collected by an air pipe and discharged to a sintering waste gas treatment system. The waste gas flows from top to bottom in the kinetic wave reverse spraying section, and the alkali liquor is sprayed into the gas flow from bottom to top, so that the momentum of the alkali liquor and the momentum of the gas are balanced, and a layer of foam area is formed in the area where the gas passes through. The region is a strong turbulent region, the liquid surface of the region is updated quickly, so that the dynamic wave scrubber can effectively absorb the waste gas. Meanwhile, the waste gas can be cooled and dedusted. And the waste gas after temperature removal and dust removal enters an alkali liquor absorption tower. Chlorine-containing waste gas is absorbed again by alkali liquor in the alkali washing tower, and the waste gas reaching the standard is discharged through a chimney.
However, the prior art generally has low absorption efficiency. The prior art can not achieve the ideal unpicking and washing effect, and is not beneficial to safety and health. Because of the absence of venturi siphon effect, a stable negative pressure cannot be formed in the upstream ductwork, such as in the event of a failure of a blower or the like. Certain air suction quantity cannot be kept, and highly toxic gas in the air pipe can escape to the surrounding space, such as a workshop, so that great potential safety hazards and risks exist. The prior art is not energy-saving, environment-friendly, large in water consumption and uneconomical. The floor space is large, the operation is complex, the structural layout is wide, the field installation is complex, and the system operation is easy to block. A large amount of pollutants, whether gas or dust, cannot be removed, the load of the filler alkaline washing tower is greatly increased, the filler is easy to block, and the operation cost is high.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the sintering waste gas treatment system for the optical fiber perform rod is provided for solving the defects of the existing optical fiber perform rod industry in the sintering waste gas treatment technology.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides an optical fiber perform sintering exhaust treatment system, includes venturi scrubbing tower, filler scrubbing tower, circulation jar, fan, tuber pipe and chimney, venturi scrubbing tower and filler scrubbing tower bottom are fixed on the circulation jar, the tuber pipe with venturi scrubbing tower top intercommunication, the fan inlet end with the top intercommunication of filler scrubbing tower, the fan give vent to anger the end with the chimney intercommunication, it has the spray liquid to spray in the venturi scrubbing tower, circulation circular flow has the alkali solution in the filler scrubbing tower, under the fan drives, waste gas by the tuber pipe gets into and passes through in proper order after venturi scrubbing tower, circulation jar, filler scrubbing tower purify by chimney exhaust atmosphere.
In one embodiment, the spray assembly comprises a spray pump and a spray head communicated with the spray pump, and the spray head is fixed above the throat of the Venturi washing tower.
In one embodiment, the spray assembly further comprises a spray header secured within the packed scrubber.
In one embodiment, the liquid inlet end of the spray pump is communicated with the circulation tank, and the liquid outlet end of the spray pump is communicated with the spray pump.
In one embodiment, the alkali solution is a 30% strength alkali solution.
In one embodiment, the circulation tank is communicated with a regulating tank and a water source, a conductivity meter with a preset threshold value is further arranged in the circulation tank, when the conductivity meter measures that the concentration of soluble salt in the circulation tank reaches the threshold value, the circulation tank discharges a certain amount of liquid in the tank to the regulating tank, and the water source supplements the same amount of water to enter the circulation tank.
In one embodiment, the air pipe is provided with a pressure sensor, the pressure sensor is connected with the fan, and the fan adjusts the rotating speed according to the air pipe pressure measured by the pressure sensor.
In one embodiment, a PH detector is further disposed in the circulation tank.
In one embodiment, the top of the packing washing tower is also provided with an air detector.
The utility model has the advantages that: the utility model has high absorption efficiency, adopts two-stage absorption of a Venturi scrubbing tower and a filler scrubbing tower, and ensures that the exhaust emission is lower than the strictest national emission standard; the air-conditioning system is beneficial to safety and health, and can form stable negative pressure in an upstream air pipe under the condition of fan failure due to the Venturi siphon effect, so that a small amount of air draft is kept, and harmful gas in the air pipe cannot escape to surrounding spaces such as workshop plants and the like; the system can also be used as an emergency absorption device for chlorine, when a large amount of chlorine is discharged, the chlorine reacts with alkali to release a large amount of heat, so the chlorine cannot be directly absorbed by a packed tower, and the Venturi scrubbing tower is particularly suitable for removing a large amount of pollutants or particles with high concentration and heat release; the process control is perfect, water inlet, water discharge and alkali addition are all automatically controlled, and the wastewater discharge concentration is stable; the occupied area is small, the Venturi scrubbing tower and the filler scrubbing tower are all placed on the top of the alkali liquor circulating tank, the structural layout is compact, and the field installation is simple; the plugging is not easy, the Venturi scrubbing tower is used as pretreatment equipment, a large amount of pollutants, whether gas or dust, are removed, the load of the filler scrubbing tower is reduced, and the filler plugging is prevented.
Drawings
The technical solution of the present application is further explained below with reference to the drawings and the embodiments.
FIG. 1 is a schematic structural diagram of an exhaust gas treatment system for sintering an optical fiber preform according to an embodiment of the present disclosure;
FIG. 2 is a schematic flow chart illustrating a method for treating an exhaust gas from sintering an optical fiber preform according to an embodiment of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, unless otherwise specified, "a plurality" means two or more.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.
The technical solutions of the present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
FIG. 1 is a schematic structural diagram of an exhaust gas treatment system for sintering an optical fiber preform according to an embodiment of the present disclosure; FIG. 2 is a schematic flow chart illustrating a method for treating an exhaust gas from sintering an optical fiber preform according to an embodiment of the present invention.
Referring to fig. 1, an optical fiber perform sintering waste gas treatment system includes a venturi scrubber 11, a filler scrubber 22, a circulation tank 3, a blower 4, an air duct 5 and a chimney 6, wherein bottoms of the venturi scrubber 1 and the filler scrubber 2 are fixed on the circulation tank 3, the air duct 5 is communicated with the top of the venturi scrubber 1, an air inlet end of the blower 4 is communicated with the top of the filler scrubber 2, an air outlet end of the blower 4 is communicated with the chimney 6, spray liquid is sprayed in the venturi scrubber 1, and an alkali solution is circulated in the filler scrubber 2. Under the drive of a fan 4, chlorine-containing waste gas and air from sintering, a gas holder and the like are collected and discharged to the system through an air pipe 5, and the waste gas enters from the air pipe 5, is purified by a Venturi washing tower 1, a circulating tank 3 and a filler washing tower 2 in sequence and then is discharged out of the atmosphere through a chimney 6.
Normally, the pollutant in the exhaust gas is chlorine. The waste gas firstly enters the Venturi scrubbing tower 1, the gas pollutants and the sprayed liquid are in violent contact in a throat pipe of the Venturi scrubbing tower 1 to generate mass transfer, and a large amount of gas pollutants are absorbed into the sprayed liquid. The gas after primary purification enters the filler washing tower 2 to be absorbed and neutralized by the circulated alkali liquor again, and the sintering waste gas finally reaches the allowable discharge standard.
In order to realize liquid spraying, in one embodiment, the device further comprises a spraying assembly, wherein the spraying assembly comprises a spraying pump 7 and a spraying head 8 communicated with the spraying pump 7, and the spraying head 8 is fixed above the throat of the Venturi washing tower 1 so as to fully spray and purify the waste gas in the tower.
In one embodiment, the spray assembly further comprises a spray header 8 fixed in the packed washing tower 2, and the waste gas in the tower can be further purified through the spray header 8.
In one embodiment, the liquid inlet end of the spray pump 7 is communicated with the circulating tank 3, the liquid outlet end of the spray pump 7 is communicated with the spray pump 7, and the alkaline solution in the filler washing tower 2 is circulated.
In one embodiment, the alkali solution is a 30% strength alkali solution. The packed scrubber 2 uses high efficiency packing and the amount of 30% caustic solution added is controlled by ORP. The ORP value (oxidation-reduction potential) is an important index in water quality, and although the ORP value cannot independently reflect the quality of water quality, the ORP value can be integrated with other water quality indexes to reflect the ecological environment in an aquarium system. Briefly, it represents a reduced or oxidized state of the solution. In sewage treatment, the dosage is generally controlled by an ORP (oxidation-reduction potential) meter.
The concentration of the soluble salt generated by the neutralization reaction can be controlled by a conductivity meter. When the set point is reached, waste water is drained to the conditioning tank and fresh water is replenished to replenish the liquid level. For example, in one embodiment, the circulation tank 3 is communicated with a regulation tank and a water source, a conductivity meter with a preset threshold value is further arranged in the circulation tank 3, when the conductivity meter detects that the concentration of soluble salt in the circulation tank 3 reaches the threshold value, the circulation tank 3 discharges a certain amount of liquid in the tank to the regulation tank, and the water source replenishes the same amount of water into the circulation tank 3.
The purified gas passes through a fan 4 and then is discharged into the atmosphere through a chimney 6, and the tail gas meets the allowable discharge standard. The frequency of the guiding fan 4 is automatically adjusted according to the pressure of the upstream air duct 5. The system can also be used as an emergency treatment system in case of chlorine leakage.
In order to realize the automatic adjustment of the frequency of the fan 4, in one embodiment, a pressure sensor is mounted on the air pipe 5, the pressure sensor is connected with the fan 4, and the fan 4 adjusts the rotating speed according to the pressure of the air pipe 5 measured by the pressure sensor.
In order to facilitate the control of the dosage of the alkali solution, in one embodiment, a PH detector is further disposed in the circulation tank 3.
In order to monitor whether the system exhaust tail gas meets the allowable emission standard, in one embodiment, an air detector is further arranged at the top of the packing washing tower 2.
The embodiment also discloses a processing method of the optical fiber perform sintering waste gas processing system, the processing system comprises a venturi scrubber 1, a filler scrubber 2, a circulating tank 3, a fan 4, an air pipe 5 and a chimney 6, the bottoms of the venturi scrubber 1 and the filler scrubber 2 are fixed on the circulating tank 3, the air pipe 5 is communicated with the top of the venturi scrubber 1, the air inlet end of the fan 4 is communicated with the top of the filler scrubber 2, the air outlet end of the fan 4 is communicated with the chimney 6, spray liquid is sprayed in the venturi scrubber 1, an alkali solution is circulated in the filler scrubber 2, please refer to fig. 2, the processing method comprises the following steps:
step 10, collecting chlorine-containing waste gas and air through an air pipe 5 and discharging the chlorine-containing waste gas and the air to a Venturi scrubbing tower 1;
step 20, contacting the waste gas and the spray liquid in a Venturi throat pipe to finish primary purification;
step 30, the waste gas after primary purification enters the filler washing tower 2 through the circulating tank 3, and is absorbed and neutralized by the circulating alkali solution again, and the purified waste gas reaches the allowable emission standard;
and step 40, discharging the purified waste gas into the atmosphere through a chimney 6 after passing through a fan 4.
The utility model has the advantages that: the utility model has high absorption efficiency of the optical fiber perform sintering waste gas treatment system, and ensures that the exhaust emission is lower than the strictest national emission standard by adopting the two-stage absorption of the Venturi scrubbing tower 1 and the filler scrubbing tower 2; the device is beneficial to safety and health, and due to the venturi siphon effect, stable negative pressure can be formed in the upstream air pipe 5 under the condition that the fan 4 is in failure, a small amount of air draft is kept, and harmful gas in the air pipe 5 cannot escape to the surrounding space of a workshop or a factory building; the system can also be used as an emergency absorption device for chlorine, when a large amount of chlorine is discharged, the chlorine reacts with alkali to release a large amount of heat, so the chlorine cannot be directly absorbed by a packed tower, the Venturi scrubbing tower 1 is particularly suitable for removing a large amount of pollutants or particles with high concentration and heat release, and in addition, the alkali liquor circulating tank 3 is stored with enough alkali liquor to neutralize the absorbed chlorine; the process control is perfect, water inlet, water discharge and alkali addition are all automatically controlled, and the wastewater discharge concentration is stable; the occupied area is small, the Venturi scrubbing tower 1 and the filler scrubbing tower 2 are all placed on the top of the alkali liquor circulating tank 3, the structural layout is compact, and the field installation is simple; the Venturi scrubbing tower 1 is used as pretreatment equipment, a large amount of pollutants, such as gas or dust, are removed, the load of the filler scrubbing tower 2 is reduced, and the filler is prevented from being blocked.
In light of the foregoing description of the preferred embodiments according to the present application, it is to be understood that various changes and modifications may be made without departing from the spirit and scope of the invention. The technical scope of the present application is not limited to the contents of the specification, and must be determined according to the scope of the claims.
Claims (8)
1. The utility model provides an optical fiber perform sintering exhaust gas treatment system, its characterized in that, includes venturi scrubber (1), filler scrubber (2), circulation jar (3), fan (4), tuber pipe (5) and chimney (6), venturi scrubber (1) and filler scrubber (2) bottom are fixed on circulation jar (3), tuber pipe (5) with venturi scrubber (1) top intercommunication, fan (4) inlet end with the top intercommunication of filler scrubber (2), fan (4) give vent to anger the end with chimney (6) intercommunication, it has the spray liquid to spray in venturi scrubber (1), circulation has alkaline solution in filler scrubber (2), under fan (4) drive, waste gas by tuber pipe (5) get into and pass through in proper order venturi scrubber (1), circulation jar (3), And the purified filler washing tower (2) is discharged out of the atmosphere through the chimney (6).
2. The system for treating the exhaust gas generated by sintering the optical fiber preform according to claim 1, further comprising a spray assembly, wherein the spray assembly comprises a spray pump (7) and a spray head (8) communicated with the spray pump (7), and the spray head (8) is fixed above the throat of the venturi scrubber (1).
3. The system for treating exhaust gas from sintering of optical fiber preform according to claim 2, wherein the spray assembly further comprises a spray head (8) fixed inside the filler washing tower (2).
4. The system for treating exhaust gas from sintering of an optical fiber preform according to claim 1, wherein the alkali solution is 30% alkali solution.
5. The system for treating the sintering waste gas of the optical fiber preform rod according to claim 1, wherein the circulation tank (3) is communicated with a regulating tank and a water source, a conductivity meter with a preset threshold value is further arranged in the circulation tank (3), when the conductivity meter measures that the concentration of the soluble salt in the circulation tank (3) reaches the threshold value, the circulation tank (3) discharges a certain amount of liquid in the tank to the regulating tank, and the water source supplements the same amount of water to the circulation tank (3).
6. The system for treating the exhaust gas from the sintering of the optical fiber preform rod of claim 1, wherein the air pipe (5) is provided with a pressure sensor, the pressure sensor is connected with the blower (4), and the blower (4) adjusts the rotation speed according to the pressure of the air pipe (5) measured by the pressure sensor.
7. The system for treating exhaust gas from the sintering of optical fiber preform rod according to claim 1, wherein a pH detector is further disposed in the circulation tank (3).
8. The system for treating the exhaust gas from the sintering of the optical fiber preform according to claim 1, wherein an air detector is further disposed on the top of the filler washing tower (2).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN2020103855308 | 2020-05-09 | ||
| CN202010385530 | 2020-05-09 |
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| CN212915090U true CN212915090U (en) | 2021-04-09 |
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| CN202020874040.XU Active CN212915090U (en) | 2020-05-09 | 2020-05-22 | Optical fiber perform sintering exhaust treatment system |
| CN202010441673.6A Pending CN111644020A (en) | 2020-05-09 | 2020-05-22 | Optical fiber preform sintering waste gas treatment system and treatment method thereof |
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| CN217613822U (en) * | 2022-07-14 | 2022-10-21 | 中国华能集团清洁能源技术研究院有限公司 | Carbon dioxide absorption system |
| CN117398788A (en) * | 2023-10-27 | 2024-01-16 | 湖北中圣节水股份有限公司 | Industrial waste gas washing tower with tail probe and capable of monitoring pH value |
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| JP2010115602A (en) * | 2008-11-13 | 2010-05-27 | Babcock Hitachi Kk | Two-step wet desulfurization method and apparatus |
| CN102772986B (en) * | 2012-06-27 | 2014-07-16 | 北京至清时光环保工程技术有限公司 | Flue gas desulfurization and denitration integrated process |
| CN104587823B (en) * | 2015-01-27 | 2017-02-22 | 无锡翱翔环保机械有限公司 | Integrated device of dust removal, desulfurization and denitrification |
| CN205598843U (en) * | 2016-03-14 | 2016-09-28 | 清流亮剑环保技术开发有限公司 | Novel fountain desulfurization is removed dust device |
| CN106731605A (en) * | 2016-12-29 | 2017-05-31 | 临沂圣大环保工程有限公司 | Nitrate method phosphoric acid plant vent gas from reaction tank processing unit and method |
| CN210219812U (en) * | 2019-06-25 | 2020-03-31 | 中石化南京工程有限公司 | High concentration chlorine-containing organic waste gas treatment system |
| CN110479058A (en) * | 2019-09-03 | 2019-11-22 | 攀枝花攀钢集团设计研究院有限公司 | Sulfuric acid method titanium pigment acid hydrolysis tail gas purification device and method |
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- 2020-05-22 CN CN202020874040.XU patent/CN212915090U/en active Active
- 2020-05-22 CN CN202010441673.6A patent/CN111644020A/en active Pending
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| WO2021232576A1 (en) | 2021-11-25 |
| CN111644020A (en) | 2020-09-11 |
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