CN106823703B - A kind of dehumanization method that can eliminate the generation of returnairshaft mouth white smoke phenomenon - Google Patents
A kind of dehumanization method that can eliminate the generation of returnairshaft mouth white smoke phenomenon Download PDFInfo
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- CN106823703B CN106823703B CN201710144122.1A CN201710144122A CN106823703B CN 106823703 B CN106823703 B CN 106823703B CN 201710144122 A CN201710144122 A CN 201710144122A CN 106823703 B CN106823703 B CN 106823703B
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- 238000007791 dehumidification Methods 0.000 claims abstract description 11
- 208000011580 syndromic disease Diseases 0.000 claims abstract description 9
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- 238000001816 cooling Methods 0.000 claims description 23
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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
- B01D53/26—Drying gases or vapours
- B01D53/265—Drying gases or vapours by refrigeration (condensation)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/80—Water
Abstract
The invention discloses the dehumanization method that one kind can eliminate the generation of returnairshaft mouth white smoke phenomenon, the high temperature of use is saturated distinguished and admirable dehumidification device containing doab (1), range of atomization (2), dehumidifying area (3), the area Chu Liu (4), idler wheel (19), guide rail (20)；Atmosphere temperature transducer (21) are installed in installation cover board (14), side installation electric gate valve (15), outside at the top of doab (1)；Hot air temperature sensor (21a) and air velocity transducer (22) is installed in range of atomization (2) import；Dehumidify area (3) installation filter screen (11), air temperature sensor (21b) after outlet installation dehumidifying；PLC control system (23) controls cover board (14), electric gate valve (15), motor-driven valve (7), spray pump (6).The present invention has the advantages that structure optimization, atomization are abundant, demisting efficiency is high, ventilation energy consumption is small, realizes the on-demand dehumidifying changed by wind-warm syndrome air quantity.
Description
Technical field
The invention belongs to mine ventilation environmental technology fields, and in particular to one kind makes underground mine returnairshaft high temperature be saturated wind
Stream condensation and dewfall avoids generating the dehumanization method of " white smoke " phenomenon in well head.
Background technique
Mine ventilation system it is fresh it is distinguished and admirable from earth's surface along downcast enter, enclosed with down-hole mining Work machine equipment, humidity
Hot and humid area occurs for the wet source of a variety of heat such as rock wall surface, ore autoxidation, so that underground air temperature gradually rises, humidity increases
Add.Generally, mine down-hole relative air humidity is close to 100% saturation state, and mine air temperature is close to dew-point temperature at this time,
As long as environment temperature is lower than mine air temperature, the vapor in air is by condensation and dewfall.Therefore, when underground hot-air is along return air
Well well head encounters the earth's surface cold air lower than own temperature when being discharged, mine is saturated the vapor in hot-air will be cold by cooling
But, condensation and dewfall, and returnairshaft air quantity is big, air velocity is high, moisture condensation droplet are broken point in the case where the impact of high-speed flow pushes
Solution flings well head at the more tiny water fog particle of partial size, forms the white water mist of return air well head, can go out wellhead ground may be up to
More than 50 rice seem " white smoke " on the visual field, and returnairshaft becomes underground " chimney ", cause mining area nearby residents it is uneasy whole-heartedly
Reason, if especially mine is in urban fringe, brings serious visual pollution.
The most of mines in China are far from city, and many places are in mountain area knob, thus it is this " smoldering " to be directed to return air well head
Phenomenon, the country are rarely reported.But as country is to the pay attention to day by day of environmental protection, " white smoke " pollution of returnairshaft well head is gradually drawn
The concern of people is played.According to literature search, " Modern Mineral " the 3rd phase in 2013 " design of returnairshaft waste air resolution " text
In research and analyse well head " white cigarette " phenomenon, it is indicated that " white cigarette " is substantially " white haze " and proposes resolution, select inertia force with
Distinguished and admirable cooling joint demisting technical solution.Several meters of high pylons are arranged in the technical solution above well head and cover closure well head is empty
Between, circular spray tube is arranged in closing well head space above, and demisting corrugated sheet is arranged in surrounding.But further analysis, the program are deposited
In following disadvantage:
1) it is only collected in the confined space above the pit shaft, atomization, the moisture for removing atomization again, is atomized insufficient, be not atomized
Hot-air meet low temperature cold air on the outside of demisting plate and still can largely haze, seem so more like towering " chimney ", demisting
Effect is poor, visual effect also declines；
2) when ventilating system returnairshaft air themperature increases or air quantity increases or wind-warm syndrome air quantity increases simultaneously, without corresponding
Auto-adjustment control measure, defogging effect are difficult to ensure；
3) summer atmospheric temperature higher season or returnairshaft hot air temperature and atmospheric temperature are not much different even higher than
Atmospheric temperature operating condition, returnairshaft well head be not in white water mist phenomenon, and device integrally closed well head upper space,
In the case where the pollutant discharge in compliance with the standard such as returnairshaft air-borne dust, earth's surface, Shi Bizeng is discharged yet by demisting plate in returnairshaft air
Add the ventilation resistance and ventilating system energy consumption of ventilating system returnairshaft；
4) device is constructed above vertical, and without effective distinguished and admirable partition measure, and returnairshaft hot-air continually emits
Out, site operation is difficult, is equally not easy to later maintenance management.
Summary of the invention
Well head " white smoke " vision formed the purpose of the present invention is to mine returnairshaft high temperature saturated air is dirty
Contaminate phenomenon and prior art there is fogging degrees that low, defogging effect is poor, ventilation energy consumption is high, construction risk is big, the later period
The technical problems such as maintenance management difficulty, and provide a kind of atomization sufficiently, demisting efficiency is high, ventilation energy consumption is small, can become by wind-warm syndrome air quantity
That changes can eliminate the dehumanization method of returnairshaft mouth white smoke phenomenon generation.
Above-mentioned purpose to realize the present invention, one kind of the present invention can eliminate removing for returnairshaft mouth white smoke phenomenon generation
Wet method uses following technical scheme:
The high temperature saturation wind that the dehumanization method that one kind of the present invention can eliminate the generation of returnairshaft mouth white smoke phenomenon uses
Stream dehumidification device is connect by spraying cooling system, doab, range of atomization, dehumidifying area, the area Chu Liu, sensor and with sensor
PLC control system combination is constituted；The doab is arranged in above return air well shaft, and doab is by along return air well shaft cylinder
Mouth is spaced the interior protection parapet of masonry from inside to outside, outer protecting wall group is encircled into, and cover board is equipped at the top of outer protecting wall, is prevented outside
Maintenance door is arranged in revetment side, and electric gate valve is arranged in the outer protecting wall other side, to surround sealing space, collects returnairshaft well
The hot-air being discharged in cylinder；Doab by electric gate valve and range of atomization connection, range of atomization, dehumidifying area, the area Chu Liu air duct shell
Body is linked in sequence, and bell mouth shape diffuser is arranged in the outlet in the area Chu Liu；Air duct shell is made of stainless steel plate, in order to
Heat transfer；The spraying cooling system is by water cooling pond, spray pump, motor-driven valve, spray supervisor, spray branch pipe, spray head connection
It constituting, the spray branch pipe includes vertical spray branch pipe, horizontal spray branch pipe, and vertical spray branch pipe is mounted in range of atomization,
Level spray branch pipe is mounted in doab and is located above interior protection parapet, and water cooling pond provides temperature and is lower than returnairshaft hot-air
Spray cold water cold source, spray pump variable frequency adjustment control water hydraulic pressure, spraying cooling water through spray supervisor, spray branch pipe respectively into
Enter doab, range of atomization, condensation atomization hot-air；The spray head is separately mounted to vertical spray branch using countercurrent spray mode
On pipe, horizontal spray branch pipe；It is provided with the road 2-4 filter screen in dehumidifying area, filter screen is formed using braided steel wire, the net of filter screen
Pore size is 0.1~5mm × 0.1~5mm.Water fog particle and dust particles after atomization are adsorbed by Multi-channel filtering net, adherency
In on the mesh of filter screen or directly falling off；The sensor includes atmosphere temperature transducer, hot air temperature sensor, removes
Air temperature sensor, air velocity transducer after wet；Atmosphere temperature transducer is installed on the outside of outer wellhead protecting wall, monitoring well head
Table atmospheric temperature；Hot air temperature sensor and air velocity transducer are mounted on range of atomization import, monitor return air well shaft respectively and go out
Hot air temperature, the air quantity of mouth；Air temperature sensor is mounted on the outlet of dehumidifying area after dehumidifying, monitors the Air Temperature after dehumidifying
Degree.PLC control system receives each sensor data collected, and adjusts, controls cover board, electric gate valve, motor-driven valve, spray
Pump.
Read automatically by PLC control system the temperature T0 of atmosphere temperature transducer, the temperature T1 of hot air temperature sensor,
The wind speed V of the temperature T2, air velocity transducer of air temperature sensor after dehumidifying.PLC control system multilevel iudge T0, T1, T2, V
Relationship between four parameters controls cover board, electric gate valve, motor-driven valve, spray pump by adjusting, and PLC control system is according to such as
Lower method realizes the on-demand dehumidifying changed by wind-warm syndrome, air quantity:
1) when T0-T1 >=0 °, i.e. returnairshaft hot air temperature is lower than Earth Surface Atmosphere temperature, and under the operating condition, returnairshaft heat is empty
Gas can be expelled directly out return air well shaft, and condensation and dewfall will not be occurred by contacting with atmospheric air.At this point, by PLC control system,
The cover board on doab is opened, electric gate valve is closed, simultaneously closes off spray pump and motor-driven valve, stops spray, keeps returnairshaft heat empty
Gas is expelled directly out above return air well shaft；
2) when 0 ° of T0-T1 <, i.e., returnairshaft hot air temperature is higher than earth's surface atmospheric temperature, under the operating condition, is controlled by PLC
System closes the cover board on doab, opens electric gate valve, opens spray pump and motor-driven valve in succession, start to spray, make returnairshaft
Hot-air enters range of atomization from doab, starts to carry out spraying cooling to hot-air and is atomized hot-air, and the mistake through the area that dehumidifies
The dehumidifying of strainer adsorption took, diffuser of the air through the area Chu Liu is finally discharged after dehumidifying, completes entire dehumidifying process.
Meanwhile in order to guarantee effect on moisture extraction, prevent because being spread when air themperature is higher than cold atmospheric cold air after dehumidifying
There is condensation and dewfall mist formation phenomenon in device, and returnairshaft air themperature should be as far as possible close to Earth Surface Atmosphere cold air after cool-down dehumidification
Temperature, but also to consider spraying cooling system water and spray pump energy consumption, therefore, according to the variation of the wind speed V of air velocity transducer
Range, that is, returnairshaft hot-air air quantity variation range, temperature T2 and atmospheric temperature provided with air temperature sensor after dehumidifying
Temperature difference relationship between the temperature T0 of sensor, the frequency shift shower water which passes through adjusting spraying cooling system spray pump
Amount control.PLC control system adjusts the frequency of control spray pump according to T0, T1, T2, V relationship:
When 0 ° of T0-T1 <, V≤5m/s adjusts the frequency of spray pump, makes T2-T0≤10 °；When 0 ° of T0-T1 <, 5 < V≤
10m/s adjusts the frequency of spray pump, makes T2-T0≤6 °；When 0 ° of T0-T1 <, 10 < V≤15m/s adjust the frequency of spray pump,
Make T2-T0≤3 °.
The range of atomization, dehumidifying area, the area Chu Liu air duct shell install and pass through using piecewise combination horizontal structure formula
Flanged joint, the rectangular cross-section structure of air duct shell；In air duct, the bottom of shell is equipped with idler wheel, and idler wheel is mounted on guide rail,
It can be moved on guide rail.
The interior protection parapet is columnar structured, 0.2~0.5m of nozzle apart from return air well shaft, highly 0.5~
1.5m；The outer protecting wall is square structure, is spaced interior protection parapet wall surface closest approach 1~3m of distance, 3~10m of height.
The cover board being equipped at the top of outer protecting wall is rotary type cover board, and cover board uses Electronic control, rotates angle [alpha] 0
~270 ° of ranges are adjustable.
The mesh size of the filter screen is that 0.3~3mm × 0.3~3mm is preferred, filter screen use diameter for 0.1~
The braided steel wire of 0.5mm, per pass filter screen is formed by stacking by multiple filtration net, superimposed with a thickness of 100~150mm.Often
The aperture of road filter screen is gradually increased from import to outlet along wind direction.
One kind of the present invention can eliminate the dehumanization method of returnairshaft mouth white smoke phenomenon generation using above technical scheme
Afterwards, it has the advantage that
(1) high, the saturation state feature according to the hot air temperature of mine return air well, is realized back using the device and method
The dehumidifying that cools of ventilating shaft air, and there is the distinguished and admirable effect that purifies, setting doab, range of atomization, dehumidifying area, four, the area Chu Liu
Area can more fully be pre-chilled cooling down hot-air and be atomized hot-air, and dehumidification efficiency is high, and good visual effect effectively disappears
In addition to visual pollution caused by " white smoke " in return air well head vertical direction；
(2) when summer atmospheric temperature higher season or returnairshaft hot air temperature and atmospheric temperature are not much different or even high
When atmospheric temperature operating condition, openable doab cover board closes electric flashboard, distinguished and admirable to be expelled directly out from well head, does not increase ventilation
System resistance overcomes closing well head upper space in the prior art and increases ventilating system resistance and energy yet by dehumidification device
The shortcomings that consumption；
(3) PLC control system is set, temperature sensor, air velocity transducer are added, is realized according to wind-warm syndrome, air quantity variation
On-demand dehumidifying；
(4) electric gate valve is arranged in range of atomization, dehumidifying area, the area Chu Liu horizontal configuration arrangement, range of atomization import, can be effective
Separate it is distinguished and admirable, be convenient for later maintenance management.
Detailed description of the invention
Fig. 1 is the structure arrangement schematic diagram that the high temperature that the present invention uses is saturated distinguished and admirable dehumidification device；
Fig. 2 is the A-A view in Fig. 1.
Appended drawing reference are as follows: the doab 1-；The range of atomization 2-；3- dehumidifying area；The area 4- Chu Liu；5- water cooling pond；6- spray pump；7- electricity
Dynamic valve；8- spray supervisor；9- vertical spray branch pipe；9 '-horizontal spray branch pipes；10- spray head；11- filter screen；12- diffuser；
13- flange；14- cover board；15- electric gate valve；16- maintenance door；Parapet is protected in 17-；The outer protecting wall of 18-；19- idler wheel；20- is led
Rail；21- atmosphere temperature transducer；21a- hot air temperature sensor；Air temperature sensor after 21b- dehumidifying；22- wind speed passes
Sensor；23-PLC control system；The air duct 24- shell；25- return air well shaft.
Specific embodiment
To further describe the present invention, returnairshaft spoken parts in an opera can be eliminated to one kind of the present invention with reference to the accompanying drawings and examples
The dehumanization method that color smog phenomenon generates is described in further details.
The high temperature for having the present invention shown in FIG. 1 to use is saturated the structure arrangement schematic diagram of distinguished and admirable dehumidification device and combines Fig. 2
Find out, the high temperature saturation that the dehumanization method that one kind of the present invention can eliminate the generation of returnairshaft mouth white smoke phenomenon uses is distinguished and admirable to be removed
Wet device is connect by spraying cooling system, doab 1, range of atomization 2, dehumidifying area 3, the area Chu Liu 4, sensor and with sensor
The combination of PLC control system 23 is constituted；The doab 1 is arranged in 25 top of return air well shaft, and doab 1 is by along returnairshaft
18 groups of interior protection parapet 17, the outer protecting wall that the nozzle of pit shaft 25 is spaced masonry from inside to outside is encircled into；It is pushed up in outer protecting wall 18
Portion is equipped with cover board 14, and cover board 14 is rotary type cover board, and cover board 14 uses Electronic control, and rotation angle [alpha] can in 0~270 ° of range
It adjusts.Maintenance door 16 is set in outer 18 side of protecting wall, electric gate valve 15 is set in outer 18 other side of protecting wall.The interior protection
Parapet 17 is columnar structured, 0.2~0.5m of nozzle apart from return air well shaft 25,0.5~1.5m of height；The outer protection
Wall 18 is square structure, is spaced interior protection 17 wall surface closest approach 1~3m of distance of parapet, 3~10m of height；Interior protection parapet 17 with
Spacing distance between outer protecting wall 18 as exit passageway, convenient for spraying cooling system in doab 1 installation with after
Phase maintenance management.Doab 1 by electric gate valve 15 and 2 connection of range of atomization, range of atomization 2, dehumidifying area 3, the area Chu Liu 4 air duct shell
Body 24 is installed using piecewise combination horizontal structure formula and is passed through flange 13 and is linked in sequence, and is convenient for system using sectionally assembled structure
Maintenance management is also convenient for lengthening range of atomization 2 and dehumidifying area 3 due to returnairshaft air quantity increases or wind-warm syndrome increases.Air duct shell 24
It is fabricated to using stainless steel plate, stainless steel plate thermal coefficient is big, is conducive to the atmosphere that lower temperature is carried out by steel plate and heat
The heat transfer of returnairshaft air, further decreases returnairshaft air themperature, to reduce spraying cooling system water and energy consumption；In air duct
The bottom of shell 24 is equipped with idler wheel 19, and idler wheel 19 is mounted on guide rail 20；The spraying cooling system is by water cooling pond 5, spray
Leaching pump 6, motor-driven valve 7, spray supervisor 8, spray branch pipe, spray head 10 connect and compose, and spray branch pipe is responsible for 8 top sets from spray,
Together every 1~2m installation, and per branch all the way one motor-driven valve 7 is set, adjusts control water spray.The spray branch pipe packet
Vertical spray branch pipe 9, horizontal spray branch pipe 9 ' are included, vertical spray branch pipe 9 is mounted in range of atomization 2, and level spray branch pipe 9 ' is pacified
In doab 1 and be located above interior protection parapet 17, the level installed in doab 1 spray branch pipe 9 ' and spray head 10 be for
Pretreatment purification hot-air；The spray head 10 is separately mounted to vertical spray branch pipe 9, horizontal spray using countercurrent spray mode
It drenches on branch pipe 9 '；It is provided with the road 2-4 filter screen 11 in dehumidifying area 3, filter screen 11 is formed using braided steel wire, the net of filter screen 11
Pore size is 0.3~3mm × 0.3~3mm；Together every 0.5~1m installation, the aperture of filter screen 11 is along distinguished and admirable side for filter screen 11
It is gradually increased to from import to outlet, to reduce filtration resistance, water fog particle and dust particles after atomization pass through Multi-channel filtering
The absorption of net 11 is adhered on the mesh of filter screen 11 or directly falls off, remove outgoing airflow in 90% or more moisture to
Reach dehumidifying purpose；Bell mouth shape diffuser 12 is arranged in the outlet in the area Chu Liu 4, into the dehumidifying in the area Chu Liu 4 after air themperature
Reduce with the temperature difference of ambient air temp, when contacting with atmosphere cold air, white water mist will not be generated, be finally reached dehumidifying,
Eliminate well head water mist phenomenon；After the sensor includes atmosphere temperature transducer 21, hot air temperature sensor 21a, dehumidifying
Air temperature sensor 21b, air velocity transducer 22；It is liftoff about that atmosphere temperature transducer 21 is installed on 18 outside of outer wellhead protecting wall
1.2m eminence, for monitoring the atmospheric temperature near well head；Hot air temperature sensor 21a and air velocity transducer 22 are mounted on mist
Change 2 import of area, is respectively used to hot air temperature, air quantity that monitoring return air well shaft 25 exports；Air temperature sensor after dehumidifying
21b is mounted on dehumidifying area 3 and exports, for monitoring the air themperature after dehumidifying.PLC control system 23 is connect with each sensor, is connect
Each sensor data collected are received, and adjust control cover board 14, electric gate valve 15, motor-driven valve 7, spray pump 6.
The dehumanization method that one kind of the present invention can eliminate the generation of returnairshaft mouth white smoke phenomenon is saturated using above-mentioned high temperature
Distinguished and admirable dehumidification device is read temperature T0, the hot air temperature sensor of atmosphere temperature transducer 21 by PLC control system 23 automatically
The wind speed V of the temperature T2 of air temperature sensor 21b, air velocity transducer 22, PLC control system 23 after the temperature T1 of 21a, dehumidifying
Relationship between tetra- parameters of multilevel iudge T0, T1, T2, V, by adjusting control cover board 14, electric gate valve 15, motor-driven valve 7, spray
Leaching pump 6, PLC control system 23 realize the on-demand dehumidifying changed by wind-warm syndrome, air quantity as follows:
1) when T0-T1 >=0 °, i.e. returnairshaft hot air temperature is lower than Earth Surface Atmosphere temperature
Under the operating condition, returnairshaft hot-air is expelled directly out return air well shaft 25, and contacting with atmospheric air will not condense
Moisture condensation closes electric gate valve 15, simultaneously closes off spray at this point, opening the cover board 14 on doab 1 by PLC control system 23
Pump 6 and each motor-driven valve 7 stop spray, are expelled directly out returnairshaft hot-air above return air well shaft 25, do not increase ventage
System resistance, has saved mine ventilation system fan energy consumption, has not also generated spray pump energy consumption；
2) when 0 ° of T0-T1 <, i.e., returnairshaft hot air temperature is higher than earth's surface atmospheric temperature
Under the operating condition, by PLC control system 23, the cover board 14 on doab 1 is closed, opens electric gate valve 15, in succession
Spray pump 6 and motor-driven valve 7 are opened, starts to spray, so that returnairshaft hot-air is entered range of atomization 2 from doab 1, starts to hot-air
It carries out spraying cooling and is atomized hot-air, and 11 adsorption took of filter screen through the area 3 that dehumidifies dehumidifies, air is through the area Chu Liu after dehumidifying
4 diffuser 12 is finally discharged, and completes entire dehumidifying process.
Because each mine ventilation system returnairshaft air quantity, wind-warm syndrome are different, Earth Surface Atmosphere temperature is also different, takes the dehumidification device
The misty degree of outlet depends on the temperature difference after dehumidified air quantity and dehumidifying between air themperature and atmospheric temperature, if air quantity is got over
The water capacity of condensation and dewfall again greatly is bigger, if along with the temperature difference is bigger, outlet air is in contact water generated with atmosphere
Mist will be more obvious.In order to guarantee effect on moisture extraction, prevent because when air themperature is higher than cold atmospheric cold air after dehumidifying in diffuser
12 there is condensation and dewfall mist formation phenomenon, and returnairshaft air themperature T2 should be as far as possible close to the cold sky of Earth Surface Atmosphere after cool-down dehumidification
Temperature degree T0, but also to consider 6 energy consumption of spraying cooling system water and spray pump, therefore, according to the wind speed V of air velocity transducer 22
Variation range, that is, returnairshaft hot-air air quantity variation range, the temperature T2 provided with air temperature sensor 21b after dehumidifying
Temperature difference relationship between the temperature T0 of atmosphere temperature transducer 21, the temperature difference is by adjusting spraying cooling system spray pump 6
The control of frequency shift water spray.When returnairshaft hot-air air quantity wind speed is big, the T2-T0 temperature difference is small, and diffuser exit 12 is empty to the cold
Depressed mist is not it is obvious that mist formation on the contrary is more obvious.T0, T1, T2, V relationship are as follows: when 0 ° of T0-T1 <, V≤5m/s, adjusting
The frequency for saving spray pump 6, makes T2-T0≤10 °；When 0 ° of T0-T1 <, 5 < V≤10m/s, the frequency of spray pump 6 is adjusted, T2- is made
T0≤6°；When 0 ° of T0-T1 <, 10 < V≤15m/s, the frequency of spray pump 6 is adjusted, T2-T0≤3 ° are made.
Claims (6)
1. the dehumanization method that one kind can eliminate the generation of returnairshaft mouth white smoke phenomenon, it is characterised in that: the height of use is had enough to eat and wear
With distinguished and admirable dehumidification device by spraying cooling system, doab (1), range of atomization (2), dehumidifying area (3), the area Chu Liu (4), sensor and
Composition is combined with the PLC control system (23) of sensor connection；The doab (1) is arranged on return air well shaft (25)
Side, doab (1) is by being spaced the interior protection parapet (17) of masonry, outer protecting wall from inside to outside along return air well shaft (25) nozzle
(18) group is encircled into, and is equipped with cover board (14) at the top of outer protecting wall (18), and maintenance door (16) are arranged in outer protecting wall (18) side,
In outer protecting wall (18) other side, electric gate valve (15) are set；Doab (1) is joined by electric gate valve (15) and range of atomization (2)
It is logical, range of atomization (2), dehumidifying area (3), air duct shell (24) sequential connection of the area Chu Liu (4), and set in the outlet of the area Chu Liu (4)
Set bell mouth shape diffuser (12)；The spraying cooling system is by water cooling pond (5), spray pump (6), motor-driven valve (7), spray
Supervisor (8), spray branch pipe, spray head (10) connect and compose, and the spray branch pipe includes vertical spray branch pipe (9), horizontal spray
Branch pipe (9 '), vertical spray branch pipe (9) are mounted in range of atomization (2), and level spray branch pipe (9 ') is mounted in doab (1) simultaneously
Above interior protection parapet (17)；The spray head (10) is separately mounted to vertical spray branch pipe using countercurrent spray mode
(9), on horizontal spray branch pipe (9 ')；It is provided with the road 2-4 filter screen (11) in dehumidifying area (3), filter screen (11) is compiled using steel wire
It knits, the mesh size of filter screen (11) is 0.1~5mm × 0.1~5mm；The sensor includes atmospheric temperature sensing
Air temperature sensor (21b), air velocity transducer (22) after device (21), hot air temperature sensor (21a), dehumidifying, big temperature
Degree sensor (21) is installed on the outside of outer wellhead protecting wall (18), hot air temperature sensor (21a) and air velocity transducer (22)
It is mounted on range of atomization (2) import, air temperature sensor (21b) is mounted on dehumidifying area (3) outlet after dehumidifying；
Read temperature T0, the hot air temperature sensor (21a) of atmosphere temperature transducer (21) automatically by PLC control system (23)
Temperature T1, after dehumidifying the temperature T2, air velocity transducer (22) of air temperature sensor (21b) wind speed V, PLC control system
(23) relationship between tetra- parameters of multilevel iudge T0, T1, T2, V, by adjusting control cover board (14), electric gate valve (15), electricity
Dynamic valve (7), spray pump (6), PLC control system (23) realize the on-demand dehumidifying changed by wind-warm syndrome, air quantity as follows:
1) when the cover board (14) on doab (1), closing electric gate valve are opened by PLC control system (23) in T0-T1 >=0 °
(15), spray pump (6) and motor-driven valve (7) are simultaneously closed off, spray is stopped, making returnairshaft hot-air above return air well shaft (25)
It is expelled directly out；
2) when 0 ° of T0-T1 <, by PLC control system (23), the cover board (14) on doab (1) is closed, opens electric gate valve
(15), spray pump (6) and motor-driven valve (7) are opened in succession, start to spray, enter returnairshaft hot-air from doab (1) and be atomized
Area (2) starts to carry out spraying cooling to hot-air and is atomized hot-air, and filter screen (11) adsorption took through dehumidifying area (3)
Dehumidifying, diffuser (12) of the air through the area Chu Liu (4) is finally discharged after dehumidifying, completes entire dehumidifying process.
2. one kind as described in claim 1 can eliminate the dehumanization method of returnairshaft mouth white smoke phenomenon generation, feature
Be: in 2) kind, PLC control system (23) adjusts control spray pump (6) according to T0, T1, T2, V relationship
Frequency:
When 0 ° of T0-T1 <, V≤5m/s, the frequency of spray pump (6) is adjusted, T2-T0≤10 ° are made；When 0 ° of T0-T1 <, 5 < V≤
10m/s adjusts the frequency of spray pump (6), makes T2-T0≤6 °；When 0 ° of T0-T1 <, 10 < V≤15m/s, adjust spray pump (6)
Frequency, make T2-T0≤3 °.
3. one kind as claimed in claim 1 or 2 can eliminate the dehumanization method of returnairshaft mouth white smoke phenomenon generation, special
Sign is: air duct shell (24) piecewise combination horizontal structure formula peace of the range of atomization (2), dehumidify area (3), the area Chu Liu (4)
It fills and passes through flange (13) connection；In air duct, the bottom of shell (24) is equipped with idler wheel (19), and idler wheel (19) is mounted on guide rail (20)
On.
4. one kind as claimed in claim 3 can eliminate the dehumanization method of returnairshaft mouth white smoke phenomenon generation, feature
Be: the interior protection parapet (17) is columnar structured, 0.2~0.5m of nozzle apart from return air well shaft (25), height
0.5~1.5m；The outer protecting wall (18) is square structure, is spaced interior protection parapet (17) wall surface closest approach 1~3m of distance,
Highly 3~10m.
5. one kind as claimed in claim 4 can eliminate the dehumanization method of returnairshaft mouth white smoke phenomenon generation, feature
Be: the cover board (14) being equipped at the top of outer protecting wall (18) is rotary type cover board, and cover board (14) uses Electronic control, rotation
Angle [alpha] is adjustable in 0~270 ° of range.
6. one kind as claimed in claim 5 can eliminate the dehumanization method of returnairshaft mouth white smoke phenomenon generation, feature
Be: the mesh size of the filter screen (11) is 0.3~3mm × 0.3~3mm, filter screen (11) use diameter for 0.1~
The braided steel wire of 0.5mm, per pass filter screen (11) are formed by stacking by multiple filtration net, it is superimposed with a thickness of 100~
150mm。
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| CN107703875A (en) * | 2017-11-03 | 2018-02-16 | 四川省达州钢铁集团有限责任公司 | One kind eliminates white cigarette control system and method |
| CN108579316A (en) * | 2018-07-05 | 2018-09-28 | 山东三融环保工程有限公司 | A kind of flue gas for wet desulfuration tower disappears white plumage governing system |
| CN114522517B (en) * | 2022-01-11 | 2023-03-17 | 北京京仪自动化装备技术股份有限公司 | Semiconductor waste gas treatment equipment and control method and device thereof |
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