CN115006950A - 360-degree dry fog spraying and dedusting method - Google Patents
360-degree dry fog spraying and dedusting method Download PDFInfo
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- CN115006950A CN115006950A CN202210834922.7A CN202210834922A CN115006950A CN 115006950 A CN115006950 A CN 115006950A CN 202210834922 A CN202210834922 A CN 202210834922A CN 115006950 A CN115006950 A CN 115006950A
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000005507 spraying Methods 0.000 title claims abstract description 28
- 239000000428 dust Substances 0.000 claims abstract description 143
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 75
- 239000007788 liquid Substances 0.000 claims description 39
- 239000003595 mist Substances 0.000 claims description 31
- 239000003795 chemical substances by application Substances 0.000 claims description 27
- 238000000889 atomisation Methods 0.000 claims description 26
- 230000001105 regulatory effect Effects 0.000 claims description 21
- 230000009471 action Effects 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 14
- 239000012530 fluid Substances 0.000 claims description 12
- 238000005192 partition Methods 0.000 claims description 12
- 238000013178 mathematical model Methods 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 8
- 230000003116 impacting effect Effects 0.000 claims description 7
- 238000009690 centrifugal atomisation Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 4
- -1 and meanwhile Substances 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 claims description 3
- 238000012417 linear regression Methods 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 claims description 3
- 230000005514 two-phase flow Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 239000000779 smoke Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 230000000241 respiratory effect Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000006399 behavior Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
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- 239000000203 mixture Substances 0.000 description 2
- 238000000917 particle-image velocimetry Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
- B01D47/08—Spray cleaning with rotary nozzles
Abstract
The invention relates to the field of dry fog dust removal, and discloses a 360-degree dry fog spraying dust removal method, which comprises the following steps of S1: establish dry fog dust shaker, and carry out rotatory setting through the motor between dust removal barrel in the dust shaker and the base, make it can carry out 360 degrees water smoke dust removals, S2: dividing the area to be dedusted around the deduster into a plurality of areas, and performing step-by-step dedusting according to the dust concentration, S3: according to the region division, after the dust removal sequence is specified, the dust remover can be started to carry out dust removal, and the dust removal method can achieve a further water saving effect by removing dust in a subarea mode and using different water amounts according to regions with different dust concentrations.
Description
Technical Field
The invention relates to the field of dry fog dust removal, in particular to a 360-degree dry fog spraying dust removal method.
Background
The dry fog dust remover can directly make atomized fog particles reach 1-10 microns, so that fine fog particles can float in the air and evaporate a part of the fog particles while floating, the humidity of local air is saturated, surrounding dust is driven to increase the humidity until the fog particles are mutually adsorbed, agglomerated and reduced, however, high-pressure spray dust removal is mostly used in China in the past, the dust removal effect is achieved to a certain extent, when water spray is sprayed for dust removal, the water spray amount used for places with different dust concentrations is consistent, so that the water spray amount is too much for places with lower dust concentration, waste is caused, and therefore a 360-degree dry fog spray dust removal method is provided.
Disclosure of Invention
The purpose of the invention is: aiming at the defects of the prior art, a 360-degree dry fog spraying dust removal method is provided to solve the problems.
According to the above purpose, the technical scheme of the invention is as follows: a360-degree dry fog spraying and dust removing method is characterized in that: the method comprises the following steps: s1: establishing a dry fog dust remover, and rotationally arranging a dust removing gun barrel and a base in the dust remover through a motor to enable the dust remover to remove dust by water fog at 360 degrees;
s2: dividing a region to be dedusted around the deduster into a plurality of regions, and performing step-by-step dedusting according to the dust concentration;
s3: and (4) according to the region division, after the dust removal sequence is specified, the dust remover can be started to carry out dust removal work.
Further, the operation step of the dry fog dust remover in the step S3 includes: s21: opening a compressed air regulating valve on a compressed air regulating supply pipeline, and allowing compressed air with the pressure of 0.3-0.7 MPa to enter the Venturi type rotational flow ejector after passing through the regulating valve, the compressed air filter and the compressed air check valve;
s22: opening a regulating valve on a water supply pressurization regulating supply pipeline, pressurizing water in an underground water supply system by an explosion-proof type water supply pressurization pump after passing through the regulating valve and a water supply filter, and feeding the water into a mixer through a water supply check valve;
s23: opening a dedusting agent regulating valve on a dedusting agent quantitative adding pipeline, enabling a dedusting agent with the concentration of 0.1% -0.5% prepared in a dedusting agent storage tank to pass through a dedusting agent filter, an explosion-proof dedusting agent quantitative adding pump and a dedusting agent check valve and then enter a mixer, and enabling the dedusting agent entering the mixer to fully mix with pressurized water and then enter a Venturi type rotational flow ejector of a two-fluid atomizing nozzle;
s24: simultaneously, compressed air and pressurized water containing a dedusting agent entering the Venturi type rotational flow ejector form water mist of gas-liquid two-fluid atomization under the action of the two-fluid atomization nozzle;
s25: the water mist forms a water mist jet flow with rotational flow strength and rigidity after passing through the Venturi type rotational flow ejector, the water mist jet flow collides, intercepts and captures underground dust, and meanwhile, dust-containing air flow is sucked into the Venturi type rotational flow ejector again by negative pressure to form secondary dust fall.
Furthermore, in the step S24, the water mist venturi-type rotational flow ejector is strengthened, and the method includes the following steps: s31: establishing a mathematical model of crushing and atomizing of liquid under the action of centrifugal force and transverse wind flow, and establishing a mathematical model of crushing and atomizing of liquid drops impacting an ultrasonic vibration wall surface;
s32: crushing and atomizing by utilizing the centrifugal force and the action of transverse wind flow to obtain a fog group, further analyzing the factors such as the incident speed, the initial kinetic energy, the particle size and the wall surface hydrophobicity of the primary atomized liquid drop, and further crushing by utilizing the atomizing mechanism of impacting the ultrasonic vibration wall surface to obtain a micro fog group;
s33: and constructing a respiratory tiny dust with different properties and a micro mist with different properties on a gas-liquid-solid three-phase coupling dust-settling mechanism experiment platform to obtain a respiratory dust-settling rule.
More specifically, the change in centrifugal force in S31 is determined by changing the parameters of the duct within the blade, including diameter, shape, number, length, and rotational speed of the blade.
More specifically, the method for establishing the mathematical model of the crushing and atomizing of the liquid under the action of the centrifugal force and the transverse wind flow in S31 includes: centrifugal atomization conditions under different parameters are obtained by changing the diameter, the shape, the number, the length and the rotating speed of blades in the blades, crushing atomization data under different parameter conditions are collected, influence relations between atomization granularity and speed and input condition parameters are obtained through a linear regression method, a liquid-solid and liquid-gas two-phase flow coupling computational fluid dynamics CFD method is used for establishing a liquid drop movement model and a secondary atomization model in the pipeline, and liquid drop crushing mechanisms and crushing influence factors under the action of centrifugal force and a transverse wind flow field are analyzed.
Further, the distributing and dedusting in S2 includes the following steps: s61: dividing an annular sector to be dedusted into a plurality of areas;
s62: acquiring a part with the maximum dust concentration in each area;
s63: the controller controls the direction of the air outlet of the dust remover, so that the air outlet of the dust remover is aligned to the subarea with the largest dust concentration on the air inlet side for water mist spraying, and the long-range micro mist flow formed by the air outlet of the dust remover is aligned to the subarea with the largest dust concentration on the air outlet side for dust settling.
Further, the dividing the region in S61 includes the following steps: s71: dividing each area into an upwind side intercepting surface, a middle intercepting surface and a downwind side intercepting surface;
s72: dividing the middle section into a partition I, a partition II, a partition III and a partition IV;
s73: and the I subarea, the II subarea, the III subarea and the IV subarea are respectively provided with a dust concentration sensor, the dust concentration sensors transmit data to the controller, and the start and stop of the wet type filter dust collector and the micro-mist spray water quantity of the dust collector are controlled by monitoring the dust concentration of each subarea.
Compared with the prior art, the invention has the advantages and beneficial effects that:
1. compared with the traditional high-pressure spraying, the 360-degree dry fog spraying dust removal method has the characteristics of small average fog drop particle size (less than 12um to 30 percent), uniform distribution, low water consumption and energy conservation and consumption reduction, and the centrifugal atomization is realized by utilizing the high-speed rotation of a fan, so that the larger the centrifugal force is, the smaller the diameter of the liquid silk thrown out is, and the smaller the liquid drop formed by the liquid silk finally thrown out is; in addition, the increase of the rotating speed of the fan is beneficial to reducing the diameter of the fog drops, and the existence of the transverse wind flow is also beneficial to the distortion, deformation and splitting of the liquid drops and the atomization of the liquid drops into smaller liquid drops. By changing the diameter, shape, number, length, blade rotating speed and other factors of the pipeline in the blade, the centrifugal atomization effect under different parameter conditions can be obtained. The method is characterized in that impact atomization is carried out, spreading and growing behaviors of liquid drops when the liquid drops impact a solid surface are influenced by factors such as contact angles, liquid drop viscosity, liquid drop radius, impact speed and hydrophilicity and hydrophobicity of the wall surface, an ultrasonic atomization theory is combined, an atomization mode that the liquid drops impact the ultrasonic vibration wall surface is adopted, vibration with different wavelengths is generated by controlling vibration frequency, and the vibration is overlapped with impact capillary waves to promote atomization of the liquid drops, so that a micro mist group with smaller central particle size of the mist drops is obtained. The ultrasonic atomization has the advantages that the generation of fine water mist is beneficial to the capture of respiratory dust, and the dust capture efficiency is higher than that of fog drops with large particle size; has the characteristics of water consumption saving, simple subsequent treatment and running cost saving.
2. The invention relates to a 360-degree dry fog spraying dust removal method, which comprises the steps of controlling the start and stop of a dust remover and the micro fog spraying water amount of the dust remover by monitoring the dust concentration of each subarea, collecting the dust concentration of corresponding positions by each sensor and transmitting data to a controller, selecting the subarea with the highest dust concentration in a dust concentration sensor by the controller by judging the data of all the sensors, and controlling a spraying cylinder of a dust remover to align to the subarea with the highest dust concentration by the controller to spray water fog for dust removal; the problem of the water waste that the fixed water yield leads to using to the low dust district when spraying for traditional dry fog dust collecting equipment, this equipment uses different water yields through the dust concentration in different regions, has reached water-saving effect.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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.
A360-degree dry fog spraying and dust removing method comprises the following steps: s1: establishing a dry fog dust remover, and rotationally arranging a dust removing gun barrel and a base in the dust remover through a motor to enable the dust remover to remove dust by water fog at 360 degrees;
s2: dividing a region to be dedusted around the deduster into a plurality of regions, and performing step-by-step dedusting according to the dust concentration;
s3: and (4) according to the region division, after the dust removal sequence is specified, the dust remover can be started to carry out dust removal work.
The operation steps of the dry fog dust remover in the S3 comprise: s21: opening a compressed air regulating valve on a compressed air regulating supply pipeline, and allowing compressed air with the pressure of 0.3-0.7 MPa to enter the Venturi type rotational flow ejector after passing through the regulating valve, the compressed air filter and the compressed air check valve;
s22: opening a regulating valve on a water supply pressurization regulating supply pipeline, pressurizing water in an underground water supply system by an explosion-proof type water supply pressurization pump after passing through the regulating valve and a water supply filter, and feeding the water into a mixer through a water supply check valve;
s23: opening a dedusting agent regulating valve on a dedusting agent quantitative adding pipeline, enabling the dedusting agent with the concentration of 0.1-0.5% which is prepared in a dedusting agent storage tank to enter a mixer after passing through a dedusting agent filter, an explosion-proof dedusting agent quantitative adding pump and a dedusting agent check valve, and enabling the dedusting agent entering the mixer to enter a Venturi type rotational flow ejector of a two-fluid atomizing nozzle after being fully mixed with pressurized water;
s24: simultaneously, compressed air and pressurized water containing a dedusting agent entering the Venturi type rotational flow ejector form water mist of gas-liquid two-fluid atomization under the action of the two-fluid atomization nozzle;
s25: the water mist forms a water mist jet flow with rotational flow strength and rigidity after passing through the Venturi type rotational flow ejector, the water mist jet flow collides, intercepts and captures underground dust, and meanwhile, dust-containing air flow is sucked into the Venturi type rotational flow ejector again by negative pressure to form secondary dust fall; adopt rotation type atomizing efflux, guaranteed water smoke fluidic intensity and rigidity, set up venturi type whirl ejector, rotatory efflux water smoke when with dust collision, interception dust fall, the dusty air current will be sucked once more and get into the ejector to form the secondary dust fall, improved dust collection efficiency. The venturi ejector uses positive pressure air generated by a blower or an air compressor to generate suction force when flowing through the ejector, so as to suck away materials above the ejector and enable the materials to convey powder, particles and bulk materials in a positive pressure pneumatic conveying system. During transport, the venturi ejector pushes the mixture of solid material and air, thereby providing sufficient pressure to compensate for the pressure drop in the downstream conduit.
In the S24, the water mist Venturi type rotational flow ejector is strengthened, and the method comprises the following steps: s31: establishing a mathematical model of crushing and atomizing of liquid under the action of centrifugal force and transverse wind flow, and establishing a mathematical model of crushing and atomizing of liquid drops impacting an ultrasonic vibration wall surface;
s32: crushing and atomizing by utilizing the centrifugal force and the action of transverse wind flow to obtain a fog group, further analyzing the factors such as the incident speed, the initial kinetic energy, the particle size and the wall surface hydrophobicity of the primary atomized liquid drop, and further crushing by utilizing the atomizing mechanism of impacting the ultrasonic vibration wall surface to obtain a micro fog group;
s33: a gas-liquid-solid three-phase coupling dust-settling mechanism experiment platform for respirable dust with different properties and micro mist with different properties is constructed, and a respirable dust-settling rule is obtained.
The centrifugal force is varied by varying the diameter, shape, number, length, blade speed, etc. of the channels within the blades.
The method for establishing the crushing and atomizing mathematical model of the liquid under the action of the centrifugal force and the transverse wind flow in the S31 comprises the following steps: the method comprises the steps of obtaining centrifugal atomization conditions under different parameters by changing the diameter, the shape, the number, the length and the rotating speed of blades in the blades, acquiring crushing atomization data under different parameter conditions by using a drop spectrometer, a high-speed camera, a PIV (particle image velocimetry), an anemometer and the like, obtaining influence relations of atomization granularity, speed and input condition parameters by using a linear regression method, establishing a liquid drop motion model and a secondary atomization model in the pipeline by using a liquid-solid and liquid-gas two-phase flow coupling Computational Fluid Dynamics (CFD) method, and analyzing a liquid drop crushing mechanism and crushing influence factors under the action of centrifugal force and a transverse wind flow field.
Compared with the traditional high-pressure spraying, the centrifugal atomizing spray has the characteristics of small average droplet particle size (less than 12um to 30 percent), uniform distribution, low water consumption, energy conservation and consumption reduction, and utilizes the high-speed rotation of a fan, the larger the centrifugal force is, the smaller the diameter of a liquid filament is thrown out, and the smaller the droplet formed by the final throwing out is, in addition, the improvement of the rotating speed of the fan is favorable for reducing the diameter of the droplet, and the existence of transverse airflow is also favorable for the distortion, deformation and splitting of the droplet and the atomizing into smaller droplets; by changing the diameter, shape, number, length, blade rotating speed and other factors of the pipeline in the blade, the centrifugal atomization effect under different parameter conditions can be obtained. Impact atomization, wherein the spreading growth behavior of liquid drops when impacting a solid surface is influenced by factors such as contact angle, liquid drop viscosity, liquid drop radius, impact speed, hydrophilicity and hydrophobicity of the wall surface, an ultrasonic atomization theory is combined, an atomization mode that the liquid drops impact the ultrasonic vibration wall surface is adopted, vibration with different wavelengths is generated by controlling vibration frequency, and the vibration is superposed with impact capillary waves to promote liquid drop atomization, so that a micro fog group with smaller central particle size of the fog drops is obtained, the ultrasonic atomization has the advantages of generation of micro water fog, and is beneficial to capture of respiratory dust, and the dust capture efficiency of the micro water fog is higher than that of the fog drops with large particle size; has the characteristics of water consumption saving, simple subsequent treatment and running cost saving.
The dust distribution and removal in the S2 comprises the following steps: s61: dividing an annular sector to be dedusted into a plurality of areas;
s62: acquiring a part with the maximum dust concentration in each area;
s63: the controller controls the direction of the air outlet of the dust remover, so that the air outlet of the dust remover is aligned to the subarea with the largest dust concentration on the air inlet side for water mist spraying, and the long-range micro mist flow formed by the air outlet of the dust remover is aligned to the subarea with the largest dust concentration on the air outlet side for dust settling. Dividing the region in S61 includes the following steps S71: dividing each region into an upwind side truncation surface, a middle truncation surface and a downwind side truncation surface;
s72: dividing the middle section into a partition I, a partition II, a partition III and a partition IV;
s73: the dust concentration sensors are arranged in the I subarea, the II subarea, the III subarea and the IV subarea, the dust concentration sensors transmit data to the controller, the start and stop of the dust remover and the micro-mist spraying water quantity of the dust remover are controlled by monitoring the dust concentration of each subarea, each sensor acquires the dust concentration at the corresponding position and transmits the data to the controller, the controller judges the data of all the sensors and selects the subarea with the highest dust concentration in the dust concentration sensors, and the controller controls the spraying cylinder of the dust remover to align to the subarea with the highest dust concentration for spraying water mist for dust removal; the problem of the water waste that the fixed water yield leads to using to the low dust district when spraying for traditional dry fog dust collecting equipment, this equipment uses different water yields through the dust concentration in different regions, has reached water-saving effect.
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 (7)
1. A360-degree dry fog spraying and dust removing method is characterized in that: the method comprises the following steps: s1: establishing a dry fog dust remover, and rotationally arranging a dust removing gun barrel and a base in the dust remover through a motor to enable the dust remover to remove dust by water fog at 360 degrees;
s2: dividing a region to be dedusted around the deduster into a plurality of regions, and performing step-by-step dedusting according to the dust concentration;
s3: and (4) according to the region division, after the dust removal sequence is specified, the dust remover can be started to carry out dust removal work.
2. The 360-degree dry fog spraying dust removal method according to claim 1, characterized in that: the operation steps of the dry fog dust remover in the S3 comprise: s21: opening a compressed air regulating valve on a compressed air regulating supply pipeline, wherein compressed air with the pressure of 0.3-0.7 MPa enters the Venturi type rotational flow ejector after passing through the regulating valve, the compressed air filter and the compressed air check valve;
s22: opening a regulating valve on a water supply pressurization regulating supply pipeline, pressurizing water in an underground water supply system by an explosion-proof type water supply pressurization pump after passing through the regulating valve and a water supply filter, and feeding the water into a mixer through a water supply check valve;
s23: opening a dedusting agent regulating valve on a dedusting agent quantitative adding pipeline, enabling the dedusting agent with the concentration of 0.1-0.5% which is prepared in a dedusting agent storage tank to enter a mixer after passing through a dedusting agent filter, an explosion-proof dedusting agent quantitative adding pump and a dedusting agent check valve, and enabling the dedusting agent entering the mixer to enter a Venturi type rotational flow ejector of a two-fluid atomizing nozzle after being fully mixed with pressurized water;
s24: simultaneously, compressed air and pressurized water containing a dedusting agent entering the Venturi type rotational flow ejector form water mist of gas-liquid two-fluid atomization under the action of the two-fluid atomization nozzle;
s25: the water mist forms a water mist jet flow with rotational flow strength and rigidity after passing through the Venturi type rotational flow ejector, the water mist jet flow collides, intercepts and captures underground dust, and meanwhile, dust-containing air flow is sucked into the Venturi type rotational flow ejector again by negative pressure to form secondary dust fall.
3. The 360-degree dry fog spraying dust removal method according to claim 2, characterized in that: in the step S24, the water mist venturi type swirl flow ejector is strengthened, and the method includes the following steps: s31: establishing a mathematical model of crushing and atomizing of liquid under the action of centrifugal force and transverse wind flow, and establishing a mathematical model of crushing and atomizing of liquid drops impacting an ultrasonic vibration wall surface;
s32: crushing and atomizing by utilizing the centrifugal force and the action of transverse wind flow to obtain a fog group, further analyzing the factors such as the incident speed, the initial kinetic energy, the particle size and the wall surface hydrophobicity of the primary atomized liquid drop, and further crushing by utilizing the atomizing mechanism of impacting the ultrasonic vibration wall surface to obtain a micro fog group;
s33: a gas-liquid-solid three-phase coupling dust-settling mechanism experiment platform for respirable dust with different properties and micro mist with different properties is constructed, and a respirable dust-settling rule is obtained.
4. The 360-degree dry fog spraying dust removal method according to claim 3, characterized in that: the change in centrifugal force in S31 is dependent on changing duct parameters within the blade including diameter, shape, number, length and blade rotational speed.
5. The 360-degree dry fog spraying dust removal method according to claim 3, characterized in that: the method for establishing the crushing and atomizing mathematical model of the liquid in the S31 under the action of the centrifugal force and the transverse wind flow comprises the following steps: centrifugal atomization conditions under different parameters are obtained by changing the diameter, the shape, the number, the length and the rotating speed of blades in the blades, crushing atomization data under different parameter conditions are collected, influence relations between atomization granularity and speed and input condition parameters are obtained through a linear regression method, a liquid-solid and liquid-gas two-phase flow coupling computational fluid dynamics CFD method is used for establishing a liquid drop movement model and a secondary atomization model in the pipeline, and liquid drop crushing mechanisms and crushing influence factors under the action of centrifugal force and a transverse wind flow field are analyzed.
6. The 360-degree dry fog spraying dust removal method as claimed in claim 1, wherein: the distributing and dedusting in the S2 comprises the following steps: s61: dividing an annular sector to be dedusted into a plurality of areas;
s62: acquiring a part with the maximum dust concentration in each area;
s63: the controller controls the direction of the air outlet of the dust remover, so that the air outlet of the dust remover is aligned to the subarea with the largest dust concentration on the air inlet side for water mist spraying, and the long-range micro mist flow formed by the air outlet of the dust remover is aligned to the subarea with the largest dust concentration on the air outlet side for dust settling.
7. The 360-degree dry fog spraying dust removal method of claim 6, wherein: the dividing the region in S61 includes the following steps: s71: dividing each region into an upwind side truncation surface, a middle truncation surface and a downwind side truncation surface;
s72: dividing the middle section into a partition I, a partition II, a partition III and a partition IV;
s73: and the I subarea, the II subarea, the III subarea and the IV subarea are respectively provided with a dust concentration sensor, the dust concentration sensors transmit data to the controller, and the start and stop of the wet type filter dust collector and the micro-mist spray water quantity of the dust collector are controlled by monitoring the dust concentration of each subarea.
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| CN110030029A (en) * | 2019-05-20 | 2019-07-19 | 神华神东煤炭集团有限责任公司 | A kind of micro- mist purification method of negative pressure pumping dirt and system for mining height workface face |
| CN210356475U (en) * | 2019-07-27 | 2020-04-21 | 北京怀胜城市建设开发有限公司 | Dust fall ware for building engineering |
| CN111859821A (en) * | 2020-06-24 | 2020-10-30 | 重庆工程职业技术学院 | Dust removal method based on centrifugal jet atomization and ultrasonic vibration atomization |
| CN113908646A (en) * | 2021-11-23 | 2022-01-11 | 中电建铁路建设投资集团有限公司 | Construction raise dust zone control system and control method |
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