CN110523193B - Waste gas treatment method capable of circularly filtering mixed gas - Google Patents
Waste gas treatment method capable of circularly filtering mixed gas Download PDFInfo
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- CN110523193B CN110523193B CN201910862822.3A CN201910862822A CN110523193B CN 110523193 B CN110523193 B CN 110523193B CN 201910862822 A CN201910862822 A CN 201910862822A CN 110523193 B CN110523193 B CN 110523193B
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- 238000001914 filtration Methods 0.000 title claims abstract description 90
- 239000007789 gas Substances 0.000 title claims abstract description 71
- 238000011282 treatment Methods 0.000 title claims abstract description 57
- 239000002912 waste gas Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000005507 spraying Methods 0.000 claims abstract description 50
- 239000007921 spray Substances 0.000 claims description 38
- 230000005540 biological transmission Effects 0.000 claims description 19
- 239000003638 chemical reducing agent Substances 0.000 claims description 17
- 239000010410 layer Substances 0.000 claims description 16
- 238000009423 ventilation Methods 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 11
- 238000011221 initial treatment Methods 0.000 claims description 10
- 239000011229 interlayer Substances 0.000 claims description 10
- 239000010865 sewage Substances 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 7
- 238000000889 atomisation Methods 0.000 claims description 5
- 239000010812 mixed waste Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 abstract description 11
- 230000000694 effects Effects 0.000 description 18
- 238000010992 reflux Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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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Abstract
The invention discloses a waste gas treatment method capable of circularly filtering mixed gas, which comprises a circular spraying device, a circular filtering device, an auxiliary air inlet system and an exhaust control valve. The waste gas treatment method capable of circularly filtering the mixed gas can properly improve the treatment quality of the whole treatment process, is convenient for flexibly adjusting and treating the gases with different concentrations and flow rates, and improves the flexibility of the treatment process.
Description
Technical Field
The invention relates to the technical field of energy conservation and environmental protection, in particular to a waste gas treatment method capable of circularly filtering mixed gas.
Background
Along with the improvement of energy-saving and environment-friendly requirements and consciousness, when mixed gas of waste gas such as boiler waste gas is discharged, corresponding filtering treatment processes are generally required to be carried out on the mixed gas to reduce impurities in the discharged gas, so that atmospheric environment pollution caused by impurities such as dust is relieved, and except for partial chemical treatment modes and the like, the most common treatment modes generally comprise spraying dust fall and corresponding physical filtering measures.
In the existing waste gas treatment process, waste gas is generally treated step by step directly and sequentially through corresponding spraying dust fall and filtering mechanisms and the like, but the treatment effect of the steps one by step is general, and in order to improve the treatment filtering effect, an additional filtering treatment mechanism is often required to be added, for example, a treatment method for treating slag waste gas by using a circulating filtering device of Chinese patent publication No. CN109589722A, the treatment effect is improved through the cooperation of a primary spraying device, a secondary spraying device, a tertiary spraying device and the corresponding filtering devices, but the whole process is complex, the size of the device is large, the treatment efficiency is influenced, and when waste gas with different concentrations is treated, the filtering speed and the effect are not convenient to flexibly adjust.
Aiming at the problems, the innovative design is carried out on the basis of the original waste gas filtering treatment method.
Disclosure of Invention
The invention aims to provide a waste gas treatment method capable of circularly filtering mixed gas, and aims to solve the problems that the single-step treatment effect of waste gas filtration treatment is poor, a multi-filtration treatment device occupies a large area, the treatment efficiency is low, and the filtering speed and the effect of waste gas with different concentrations are inconvenient to flexibly adjust in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an exhaust gas treatment method capable of circularly filtering mixed gas, which comprises a circulating spray device, a circulating filtering device, an auxiliary air inlet system and an exhaust control valve, and comprises the following steps:
the method comprises the following steps that firstly, a circulating spray device and a corresponding sewage collecting and treating system thereof are sequentially started, a circulating filter device and an internal driving mechanism are started, and an auxiliary air inlet system is started to suck a large amount of waste gas mixed gas to be treated;
conveying a large amount of waste gas mixed gas into a circulating spraying device through an auxiliary gas inlet system for atomization spraying treatment, wherein the direction is from left to right, an internal spray head is vertically downward for continuous spraying, and primary treatment of waste gas is carried out;
thirdly, the mixed waste gas after primary treatment enters the circulating filter device under the drive of the auxiliary air inlet system and the fan blade driving structure in the circulating filter device, and is further filtered while circulating, so that secondary treatment of the waste gas is performed;
controlling the exhaust rate at the exhaust control valve according to the actual filtering treatment condition, shunting the mixed gas through an exhaust port of the circulating filter device and an outer layer circulating pipeline, and discharging partial waste gas after multi-layer filtering in the circulating filter device;
and step five, refluxing the shunted circulating gas to the circulating spraying device through a circulating pipeline of the circulating filtering device for spraying again, and repeating the steps from the first step to the fourth step for circulating treatment.
Preferably, the circulating filter device comprises a filtering inner pipe, an outer ventilation sleeve, a backflow interlayer, a backflow pipe, an inner movable filter barrel, a movable sealing ring, a movable paddle, a filter screen plate, a filter core, a transmission shaft and a motor reducer, and the left end and the right end of the circulating filter device are respectively connected with an air outlet and an air inlet of the circulating spray device.
Preferably, the whole circulating spraying device is of a horizontal structure, spray heads are uniformly distributed on the top of the inner side of the circulating spraying device, and a corresponding sewage collecting and treating system is arranged at the bottom of the circulating spraying device.
Preferably, the outer side of the filtering inner pipe is provided with an outer ventilation sleeve, a backflow interlayer is arranged between the filtering inner pipe and the outer ventilation sleeve, and the inside of the filtering inner pipe is communicated with the backflow pipe through the backflow interlayer.
Preferably, the auxiliary air inlet system and the exhaust control valve are respectively positioned at the outer side of an air inlet of the circulating spray device and an exhaust port of the circulating filter device, and an inner closed gas circulating structure is formed between the circulating spray device and the circulating filter device.
Preferably, the inner movable filter barrel is positioned at the inner side of the filtering inner pipe, the inner movable filter barrel and the filtering inner pipe are mutually attached and rotated through a movable sealing ring, and movable blades are uniformly distributed in the movable filter barrel.
Preferably, the movable paddle is of a spiral structure, a filter screen plate is arranged on the side surface of the movable paddle, and a filter core is filled in the inner side of the filter screen plate.
Preferably, the central axis of the transmission shaft and the central axis of the inner movable filter barrel are superposed with each other, and a motor reducer is arranged at the side end of the transmission shaft and is arranged at the outer end of the outer ventilation sleeve.
Compared with the prior art, the invention has the beneficial effects that: the waste gas treatment method capable of circularly filtering the mixed gas,
1. the flow-adjustable internal circulation type repeated filtering treatment can be carried out, in the process of matching the circulating spray device and the circulating filtering device, the gas in the circulating spray device and the circulating filtering device can be subjected to the internal circulation type repeated filtering treatment in the circulating spray device and the circulating filtering device through the matching of the driving of the movable paddle and the return pipe, and the flow rate of the discharged gas and the flow of the shunting repeated filtering gas can be flexibly adjusted by controlling the gas flow discharge rate of the gas discharge control valve, so that the effect and the speed of the gas filtering treatment can be flexibly adjusted;
2. be provided with the circulating filtration device who makes things convenient for the mist drive circulation and filter the reposition of redundant personnel simultaneously, in gaseous circulation filtering process, spiral movable blade can provide large tracts of land filtration processing through built-in filter core and the interior activity filter vat in the outside, spiral movable blade is when cooperation transmission shaft and motor reducer rotate simultaneously, can be convenient for drive the air current through movable blade and carry out fast circulation and filtration, the control adjustment of cooperation rear end exhaust control valve, make things convenient for partial air current to carry out the repeated filtration through backward flow intermediate layer and back flow to the outside reposition of redundant personnel, improve holistic treatment effect.
Drawings
FIG. 1 is a schematic overall flow diagram of the present invention;
FIG. 2 is a schematic view of an exhaust control valve control adjustment flow of the present invention;
FIG. 3 is a schematic view of the overall structure of the inner filtering pipe according to the present invention;
fig. 4 is a schematic view of the structure of the movable blade of the present invention.
In the figure: 1. filtering the inner tube; 2. an outer vent sleeve; 3. refluxing the interlayer; 4. a return pipe; 5. an inner movable filter barrel; 6. a movable sealing ring; 7. a movable paddle; 8. a filter screen plate; 9. a filter element; 10. a drive shaft; 11. and a motor reducer.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Example 1
Referring to fig. 1-4, the present invention provides a technical solution: an exhaust gas treatment method capable of circularly filtering mixed gas, which comprises a circulating spray device, a circulating filtering device, an auxiliary air inlet system and an exhaust control valve, and comprises the following steps:
the method comprises the following steps that firstly, a circulating spray device and a corresponding sewage collecting and treating system thereof are sequentially started, a circulating filter device and an internal driving mechanism are started, and an auxiliary air inlet system is started to suck a large amount of waste gas mixed gas to be treated;
conveying a proper amount of waste gas mixed gas into the circulating spraying device through the auxiliary gas inlet system for atomization spraying treatment, wherein the direction is from left to right, and the inner spray head is vertically downward for continuous spraying to perform primary treatment on the waste gas;
thirdly, the mixed waste gas after primary treatment enters the circulating filter device under the drive of the auxiliary air inlet system and the fan blade driving structure in the circulating filter device, and is further filtered while circulating, so that secondary treatment of the waste gas is performed;
step four, keeping the exhaust control valve in a normal semi-open state, shunting the mixed gas through an exhaust port of the circulating filter device and an outer layer circulating pipeline, and discharging partial waste gas after multi-layer filtering in the circulating filter device;
and step five, refluxing the shunted circulating gas to the circulating spraying device through a circulating pipeline of the circulating filtering device for spraying again, and repeating the steps from the first step to the fourth step for circulating treatment.
The circulating filter device comprises a filtering inner pipe 1, an outer ventilation sleeve 2, a backflow interlayer 3, a backflow pipe 4, an inner movable filter barrel 5, a movable sealing ring 6, a movable paddle 7, a filter screen plate 8, a filter core 9, a transmission shaft 10 and a motor speed reducer 11, and the left end and the right end of the circulating filter device are respectively connected with an air outlet and an air inlet of the circulating spray device, so that the internal circulation connection processing of the device is facilitated.
The whole circulating spraying device is of a horizontal structure, spray heads are uniformly distributed on the top of the inner side of the circulating spraying device, and a corresponding sewage collecting and treating system is arranged at the bottom of the circulating spraying device, so that the spraying contact area is conveniently increased.
The auxiliary air inlet system and the exhaust control valve are respectively positioned at the outer side of an air inlet of the circulating spray device and an exhaust port of the circulating filter device, and an inner closed gas circulating structure is formed between the circulating spray device and the circulating filter device, so that the internal circulation repeated filtering treatment of the whole process is facilitated.
The outside of filtering inner tube 1 is provided with outer sleeve pipe 2 of ventilating, and is provided with backward flow intermediate layer 3 between filtering inner tube 1 and the outer sleeve pipe 2 of ventilating to communicate each other through backward flow intermediate layer 3 between the inside of filtering inner tube 1 and the back flow 4, conveniently control the air current at the exhaust control valve and make, carry out reposition of redundant personnel to some gas and filter.
The inner movable filter vat 5 is located the inboard of filtering inner tube 1, and the inner movable filter vat 5 with filter between the inner tube 1 through the laminating rotation of activity sealing ring 6 each other to the inside evenly distributed of activity filter vat 5 has movable paddle 7, provides large tracts of land filtration processing through the active structure of activity filter vat 5 and movable paddle 7.
The movable paddle 7 is of a spiral structure, the side surface of the movable paddle 7 is provided with the filter screen plate 8, and the filter core 9 is filled in the inner side of the filter screen plate 8, so that the movable paddle 7 can conveniently and movably drive air flow and can synchronously and quickly filter the air flow.
The central axis of the transmission shaft 10 and the central axis of the inner movable filter barrel 5 are superposed with each other, a motor reducer 11 is arranged at the side end of the transmission shaft 10, the motor reducer 11 is arranged at the outer end of the outer ventilation sleeve 2, and the movable blades 7 can be directly driven to rotate through the transmission shaft 10.
Example 2
Referring to fig. 1-4, the present invention provides a technical solution: an exhaust gas treatment method capable of circularly filtering mixed gas, which comprises a circulating spray device, a circulating filtering device, an auxiliary air inlet system and an exhaust control valve, and comprises the following steps:
the method comprises the following steps that firstly, a circulating spray device and a corresponding sewage collecting and treating system thereof are sequentially started, a circulating filter device and an internal driving mechanism are started, and an auxiliary air inlet system is started to suck a large amount of waste gas mixed gas to be treated;
conveying a large amount of waste gas mixed gas into a circulating spraying device through an auxiliary gas inlet system for atomization spraying treatment, wherein the direction is from left to right, an internal spray head is vertically downward for continuous spraying, and primary treatment of waste gas is carried out;
thirdly, the mixed waste gas after primary treatment enters the circulating filter device under the drive of the auxiliary air inlet system and the fan blade driving structure in the circulating filter device, and is further filtered while circulating, so that secondary treatment of the waste gas is performed;
adjusting the exhaust control valve to an open state, so that most of the waste gas is conveniently and quickly discharged after being filtered by multiple layers in the circulating filter device, and a small amount of gas flow is used for shunting the mixed gas through an outer layer circulating pipeline, so that the quick treatment efficiency of the whole process is ensured;
and step five, refluxing a small amount of the shunted circulating gas to the circulating spraying device through a circulating pipeline of the circulating filtering device for spraying treatment again, and repeating the steps from the first step to the fourth step for circulating treatment.
The circulating filter device comprises a filtering inner pipe 1, an outer ventilation sleeve 2, a backflow interlayer 3, a backflow pipe 4, an inner movable filter barrel 5, a movable sealing ring 6, a movable paddle 7, a filter screen plate 8, a filter core 9, a transmission shaft 10 and a motor speed reducer 11, and the left end and the right end of the circulating filter device are respectively connected with an air outlet and an air inlet of the circulating spray device, so that the internal circulation connection processing of the device is facilitated.
The whole circulating spraying device is of a horizontal structure, spray heads are uniformly distributed on the top of the inner side of the circulating spraying device, and a corresponding sewage collecting and treating system is arranged at the bottom of the circulating spraying device, so that the spraying contact area is conveniently increased.
The auxiliary air inlet system and the exhaust control valve are respectively positioned at the outer side of an air inlet of the circulating spray device and an exhaust port of the circulating filter device, and an inner closed gas circulating structure is formed between the circulating spray device and the circulating filter device, so that the internal circulation repeated filtering treatment of the whole process is facilitated.
The outside of filtering inner tube 1 is provided with outer sleeve pipe 2 of ventilating, and is provided with backward flow intermediate layer 3 between filtering inner tube 1 and the outer sleeve pipe 2 of ventilating to communicate each other through backward flow intermediate layer 3 between the inside of filtering inner tube 1 and the back flow 4, conveniently control the air current at the exhaust control valve and make, carry out reposition of redundant personnel to some gas and filter.
The inner movable filter vat 5 is located the inboard of filtering inner tube 1, and the inner movable filter vat 5 with filter between the inner tube 1 through the laminating rotation of activity sealing ring 6 each other to the inside evenly distributed of activity filter vat 5 has movable paddle 7, provides large tracts of land filtration processing through the active structure of activity filter vat 5 and movable paddle 7.
The movable paddle 7 is of a spiral structure, the side surface of the movable paddle 7 is provided with the filter screen plate 8, and the filter core 9 is filled in the inner side of the filter screen plate 8, so that the movable paddle 7 can conveniently and movably drive air flow and can synchronously and quickly filter the air flow.
The central axis of the transmission shaft 10 and the central axis of the inner movable filter barrel 5 are superposed with each other, a motor reducer 11 is arranged at the side end of the transmission shaft 10, the motor reducer 11 is arranged at the outer end of the outer ventilation sleeve 2, and the movable blades 7 can be directly driven to rotate through the transmission shaft 10.
Example 3
Referring to fig. 1-4, the present invention provides a technical solution: an exhaust gas treatment method capable of circularly filtering mixed gas, which comprises a circulating spray device, a circulating filtering device, an auxiliary air inlet system and an exhaust control valve, and comprises the following steps:
the method comprises the following steps that firstly, a circulating spray device and a corresponding sewage collecting and treating system thereof are sequentially started, a circulating filter device and an internal driving mechanism are started, and an auxiliary air inlet system is started to suck a large amount of waste gas mixed gas to be treated;
conveying the high-concentration waste gas mixed gas into a circulating spraying device through an auxiliary gas inlet system for atomization spraying treatment, wherein the direction is from left to right, an internal spray head is vertically downward for continuous spraying, and primary treatment of waste gas is carried out;
thirdly, the mixed waste gas after primary treatment enters the circulating filter device under the drive of the auxiliary air inlet system and the fan blade driving structure in the circulating filter device, and is further filtered while circulating, so that secondary treatment of the waste gas is performed;
regulating at least the opening state of the exhaust control valve, reducing the outward exhaust rate, and shunting the mixed gas through an exhaust port of the circulating filter device and an outer layer circulating pipeline to enable most of the gas to be refluxed and repeatedly filtered, and discharging the residual waste gas after multi-layer filtering in the circulating filter device;
and step five, refluxing the shunted circulating gas to the circulating spraying device through a circulating pipeline of the circulating filtering device for spraying again, and repeating the steps from the first step to the fourth step for circulating treatment.
The circulating filter device comprises a filtering inner pipe 1, an outer ventilation sleeve 2, a backflow interlayer 3, a backflow pipe 4, an inner movable filter barrel 5, a movable sealing ring 6, a movable paddle 7, a filter screen plate 8, a filter core 9, a transmission shaft 10 and a motor speed reducer 11, and the left end and the right end of the circulating filter device are respectively connected with an air outlet and an air inlet of the circulating spray device, so that the internal circulation connection processing of the device is facilitated.
The whole circulating spraying device is of a horizontal structure, spray heads are uniformly distributed on the top of the inner side of the circulating spraying device, and a corresponding sewage collecting and treating system is arranged at the bottom of the circulating spraying device, so that the spraying contact area is conveniently increased.
The auxiliary air inlet system and the exhaust control valve are respectively positioned at the outer side of an air inlet of the circulating spray device and an exhaust port of the circulating filter device, and an inner closed gas circulating structure is formed between the circulating spray device and the circulating filter device, so that the internal circulation repeated filtering treatment of the whole process is facilitated.
The outside of filtering inner tube 1 is provided with outer sleeve pipe 2 of ventilating, and is provided with backward flow intermediate layer 3 between filtering inner tube 1 and the outer sleeve pipe 2 of ventilating to communicate each other through backward flow intermediate layer 3 between the inside of filtering inner tube 1 and the back flow 4, conveniently control the air current at the exhaust control valve and make, carry out reposition of redundant personnel to some gas and filter.
The inner movable filter vat 5 is located the inboard of filtering inner tube 1, and the inner movable filter vat 5 with filter between the inner tube 1 through the laminating rotation of activity sealing ring 6 each other to the inside evenly distributed of activity filter vat 5 has movable paddle 7, provides large tracts of land filtration processing through the active structure of activity filter vat 5 and movable paddle 7.
The movable paddle 7 is of a spiral structure, the side surface of the movable paddle 7 is provided with the filter screen plate 8, and the filter core 9 is filled in the inner side of the filter screen plate 8, so that the movable paddle 7 can conveniently and movably drive air flow and can synchronously and quickly filter the air flow.
The central axis of the transmission shaft 10 and the central axis of the inner movable filter barrel 5 are superposed with each other, a motor reducer 11 is arranged at the side end of the transmission shaft 10, the motor reducer 11 is arranged at the outer end of the outer ventilation sleeve 2, and the movable blades 7 can be directly driven to rotate through the transmission shaft 10.
Those not described in detail in this specification are within the skill of the art.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The waste gas treatment method capable of circularly filtering mixed gas comprises a circular spraying device, a circular filtering device, an auxiliary air inlet system and an exhaust control valve, and is characterized in that:
the auxiliary air inlet system and the exhaust control valve are respectively positioned at the outer side of a left-end air inlet of the circulating spray device and a right-end exhaust port of the circulating filter device, the left-end air inlet of the circulating filter device is connected with the right-end exhaust port of the circulating spray device, and a return pipe (4) is connected between the right end of the circulating filter device and the left-end air inlet of the circulating spray device and serves as a connecting branch;
the filter device comprises a filter inner pipe (1), an outer ventilation sleeve (2), a backflow interlayer (3), a backflow pipe (4), an inner movable filter barrel (5), a movable sealing ring (6), a movable paddle (7), a filter screen plate (8), a filter core (9), a transmission shaft (10) and a motor speed reducer (11);
the inner movable filter barrel (5) is positioned at the inner side of the inner filtering pipe (1), the inner movable filter barrel (5) and the inner filtering pipe (1) are mutually attached and rotate through a movable sealing ring (6), and movable blades (7) are uniformly distributed in the inner part of the movable filter barrel (5);
an outer ventilation sleeve (2) is arranged on the outer side of the filtering inner pipe (1), a backflow interlayer (3) is arranged between the filtering inner pipe (1) and the outer ventilation sleeve (2), and the inside of the filtering inner pipe (1) is communicated with the backflow pipe (4) through the backflow interlayer (3);
the movable paddle (7) is of a spiral structure, a filter screen plate (8) is arranged on the side surface of the movable paddle (7), and a filter core (9) is filled inside the filter screen plate (8);
the central axis of the transmission shaft (10) and the central axis of the inner movable filter barrel (5) are superposed with each other, a motor reducer (11) is arranged at the side end of the transmission shaft (10), and the motor reducer (11) is arranged at the outer end of the outer ventilation sleeve (2).
The waste gas treatment method capable of circularly filtering the mixed gas comprises the following steps:
the method comprises the following steps that firstly, a circulating spray device and a corresponding sewage collecting and treating system thereof are sequentially started, a circulating filter device and an internal driving mechanism motor reducer (11) are started to drive a fan blade structure movable blade (7), and an auxiliary air inlet system is started to suck a large amount of waste gas mixed gas to be treated;
conveying a large amount of waste gas mixed gas into a circulating spraying device through an auxiliary gas inlet system for atomization spraying treatment, wherein the direction is from left to right, an internal spray head is vertically downward for continuous spraying, and primary treatment of waste gas is carried out;
thirdly, the mixed waste gas after primary treatment enters the interior of the circulating filter device under the drive of an auxiliary air inlet system and a movable blade (7) of a blade driving structure in the circulating filter device, and is further filtered while circulating, so that secondary treatment of the waste gas is carried out;
controlling the exhaust rate at the exhaust control valve according to the actual filtering treatment condition, shunting the mixed gas through an exhaust port of the circulating filter device and a return pipe (4) of an outer layer circulating pipeline, and discharging partial waste gas after multi-layer filtering in the circulating filter device;
and step five, returning the shunted circulating gas to the circulating spraying device through a circulating pipeline return pipe (4) of the circulating filtering device for spraying again, and repeating the circulating treatment from the step one to the step four.
2. The method for treating exhaust gas capable of performing circulation filtration of mixed gas according to claim 1, wherein: an internal gas circulation structure is formed between the circulating spray device and the circulating filter device through a return pipe (4).
3. The method for treating exhaust gas capable of performing circulation filtration of mixed gas according to claim 1, wherein: the whole circulating spraying device is of a horizontal structure, spray heads are uniformly distributed on the top of the inner side of the circulating spraying device, and a corresponding sewage collecting and treating system is arranged at the bottom of the circulating spraying device.
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| CN205886486U (en) * | 2016-07-22 | 2017-01-18 | 杭州才联环保科技有限公司 | Spray paint waste gas treatment system |
| CN206198931U (en) * | 2016-11-09 | 2017-05-31 | 江苏中旗作物保护股份有限公司 | A kind of drop powder dedusting discharge duct for benzoyl area kind product |
| CN206247508U (en) * | 2016-11-25 | 2017-06-13 | 武汉力祯环保科技有限公司 | A kind of garbage transfer station sterilizing air cleaning unit |
| CN108554043A (en) * | 2018-01-22 | 2018-09-21 | 储成立 | A kind of emission-control equipment with filter core pre-washing function |
| CN109589722A (en) * | 2018-12-24 | 2019-04-09 | 扬州市顺达科技有限公司 | A kind of processing method using circulation filter processing clinker exhaust gas |
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