CN106621669B - Waste gas treatment method for recycling paint mist - Google Patents
Waste gas treatment method for recycling paint mist Download PDFInfo
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- CN106621669B CN106621669B CN201710000430.7A CN201710000430A CN106621669B CN 106621669 B CN106621669 B CN 106621669B CN 201710000430 A CN201710000430 A CN 201710000430A CN 106621669 B CN106621669 B CN 106621669B
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- coating cloud
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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
Abstract
The invention provides a waste gas treatment method for paint mist recovery, which comprises the use of an atomization absorption device, wherein the atomization absorption device comprises an air inlet, an air outlet, a mist making device and a treatment cavity, the air inlet is connected with an external waste gas discharge port, the mist making device makes liquid mist by oleophylic paint atomization liquid and sends the liquid mist into the treatment cavity or forms the liquid mist in the treatment cavity, the oleophylic paint atomization liquid is paint thinner or oleophylic paint material, when paint mist waste gas enters the treatment cavity, paint mist particles are contacted with the oleophylic paint atomization liquid mist and form large-particle-size adhesive colloidal particles, the colloidal particles are separated from the waste gas under the action of gravity or inertia force including centrifugal force to form paint liquid which can be extracted or flow out, the paint liquid is collected and recovered by a collection device of the atomization absorption device, and the treated waste gas is discharged from the air outlet or sent to a subsequent treatment process for continuous treatment; the invention improves the contact action surface and action time of the recovery device to paint mist liquid drops through atomization treatment, and can effectively improve the treatment effect of waste gas and the recovery efficiency of paint mist.
Description
Technical field
The present invention relates to environment protection treating technical field, especially a kind of waste gas processing method of coating cloud recycling.
Background technique
In the various occasions using spraying paint, such as container, automobile and other mechanical equipment Workplaces, in its spraying paint
It will be generated in process and largely contain paint particle and dust, if being directly discharged in atmosphere without processing, will seriously polluted big
Human health is damaged in compression ring border, and recycling is not added in its coating cloud particle, then causes the waste of paint precious resources.Due to paint
Mist particle is small, viscosity is big, easy coherent substance surface, and traditional coating cloud particle disposal method is there are coating cloud intercepting efficiency is low, place
Reason is not thorough, and is caused to block adsorbent gap when subsequent VOCs waste gas purification, is reduced sorbent life；The coating cloud or paint slag of interception
Paint cannot be directly recycled, causes cost recovery high, some, which is even directly burnt, results in waste of resources and generate secondary pollution etc..
The shortcomings that existing common processing method to coating cloud is that method is drenched with filtrate filtering or water, both methods is
Small with the contact action face of coating cloud drop, action time is short, therefore interception filter efficiency is low, and it is past to reach good interception effect
Toward the biggish cost of needs, and traditional spray column removes coating cloud and is easy to produce contaminated wastewater, how to solve these problems, is one
A research direction.
Summary of the invention
The present invention proposes a kind of waste gas processing method of coating cloud recycling, promotes recyclable device to coating cloud by atomization process
The contact action face of drop and action time can effectively promote the treatment effect of exhaust gas and the recovery efficiency of coating cloud.
The present invention uses following technical scheme.
A kind of waste gas processing method of coating cloud recycling, the interior use including atomization absorption device of the waste gas processing method,
The atomization absorption device includes air inlet, gas outlet, mist device processed and processing chamber, the air inlet and external exhaust gas discharge outlet
It is connected, the mist device processed is sent into processing chamber with close paint atomizing liquid manufacture liquid mist or forms liquid mist, the parent in processing chamber
Paint atomizing liquid is paint thinner or oleophylic paint material, when coating cloud exhaust gas enters processing chamber, coating cloud particle in exhaust gas with
Oleophylic paint liquid mist contacts and is formed large-sized sticky colloidal particle, and colloidal particle is used in gravity or including centrifugal force
Property power under the action of separated from exhaust gas, form the paint solution that can extract out or flow out, paint solution is atomized the collection device of absorption plant
Recycling is collected, the exhaust gas after atomization process is discharged or send to subsequent processing process through gas outlet and continues with.
The atomization absorption device can be installed additional turbulator by portion in the device or be filled by installing thick intercept additional in air inlet
It sets to strengthen coating cloud absorbability；The thick blocking apparatus includes the coarse filtration of baffle plate, cyclone dust collectors or built-in filter packing
Structure；The turbulator is used to make to be promoted the agglomeration speed of coating cloud particle in exhaust gas into the exhaust gas formation turbulent flow of processing chamber,
Paint thinner spray equipment is set in turbulator or thick blocking apparatus to strengthen the mobility for the paint solution separated from exhaust gas.
The baffle plate includes V-type baffle plate or labyrinth type baffle plate or spiral spiral board.
The oleophylic paint liquid mist is with paint thinner or oleophylic paint material (such as thinner or water paint aqueous solution)
Material production.
The waste gas processing method is divided into following steps by waste gas flow direction.
A1, paint spray booth exhaust gas be withdrawn and delivered to atomization absorption device.
A2, the mist device processed are sent into processing chamber with close paint atomizing liquid manufacture liquid mist or form liquid mist in processing chamber,
Parent's paint atomizing liquid is paint thinner or oleophylic paint material, the coating cloud when coating cloud exhaust gas enters processing chamber, in exhaust gas
Particle contacts with oleophylic paint liquid mist and forms large-sized sticky colloidal particle, and colloidal particle exists in gravity or including centrifugal force
It is separated from exhaust gas under the action of interior inertia force, forms the paint solution that can be extracted out or flow out, paint solution is further processed into recycling
Paint re-uses, or reuses again as oleophylic paint atomized liquid for atomization absorption device.
A3, the exhaust gas direct emission that atomization absorption device is discharged enter later process；Exhaust gas is regarded between subsequent various processes
Mobility status, the optional blower that sets pressurize to overcome exhaust flow impedance to exhaust gas.
A4, exhaust gas are further filtered under Action of Wind pressure by paint-fog filter.
A5, through paint-fog filter, treated that exhaust gas enters that atomization postprocessing working procedures continue with.
Paint-fog filter, filtering body and filtering body cleaning device, the coating cloud mistake are equipped in the atomization postprocessing working procedures
It is equipped with exhaust steam passage in filter to be connected with the gas outlet of atomization absorption device, the filtering body is logical set on exhaust gas in a manner of extensible
In road, filtering body is formed with the material insoluble in paint solvent；Coating cloud particulate matter when exhaust gas passes through exhaust steam passage, in exhaust gas
It is filtered and stayed in and form paint particle in filtering body by filtering body；The filtering body is substituted and was sent by fixed frequency timing
Filter body cleaning device is cleaned to restore the filter capacity of filtering body, and exhaust gas after filtering is discharged from the outlet of exhaust steam passage.
When filtering body is cleaned in filtering body cleaning device, filtering body cleaning device is cleaned and is dissolved with paint solvent
Paint particle in filtering body makes paint particle become paint solution.
The paint solution that the filtering body cleaning device generates is admitted to paint room and fresh paint is deployed to realize recycling, or
It is to be admitted to after short oil varnish processing unit is concentrated to be recycled.
The exit of the paint-fog filter exhaust steam passage be equipped with detection device, when the waste gas component that detection device measures not
When meeting discharge standard, the exhaust gas being discharged through exhaust steam passage is sent back to atomization absorption device again and is handled again.
When the waste gas component that detection device measures meets discharge standard, the exhaust gas row directly up to standard through exhaust steam passage discharge
It puts or directly returns to paint spray booth cyclical breathing, perhaps using VOCs be emitted into extraneous or paint spray booth or again by fine mistake
Filter is again filtered the fine particle in exhaust gas.
The filtering body is sent into the cleaning of filtering body cleaning device through manual mode or mechanical mode of movement；The mechanical conveying
Mode includes one of drawer-type movable, chain conveying, netted conveying and crawler type conveying or a variety of, by being continuously conveyed or
The mode circulation conveying filtering body of intermittent delivery.
The use of the atomization absorption device includes to the used aloned mode of atomization absorption device or multiple being applied in combination
Mode, the multiple mode that is applied in combination is that multiple atomization absorption device groups are combined into atomization absorption array, the atomization absorption
The combination of atomization absorption device in array includes series connection and parallel connection.
It include the use of atomization absorption device, the atomization absorption device packet in the present invention, in the waste gas processing method
It includes air inlet, gas outlet, mist device processed and processing chamber, the air inlet to be connected with external exhaust gas discharge outlet, the mist device processed
Processing chamber is sent into close paint atomizing liquid manufacture liquid mist or forms liquid mist in processing chamber, and parent's paint atomizing liquid is that paint is dilute
Agent or oleophylic paint material are released, when coating cloud exhaust gas enters processing chamber, the coating cloud particle in exhaust gas contacts simultaneously with oleophylic paint liquid mist
Large-sized sticky colloidal particle is formed, colloidal particle is under the action of gravity or the inertia force including centrifugal force from exhaust gas
Middle separation forms the paint solution that can be extracted out or flow out；The atomization absorption device can install turbulator or logical additional by portion in the device
It crosses and installs thick blocking apparatus additional in air inlet to strengthen coating cloud absorbability；The design reduces exhaust gas flow velocity by turbulator, and
To interact with coating cloud exhaust gas with oleophylic paint liquid mist, the exhaust gas of paint spray booth is after blower introduces atomization absorption device, exhaust gas
In a large amount of coating cloud microparticles and device in atomized liquid between come into full contact with, agglomerate and absorb, fine coating cloud particle pass through and parent
The atomized liquid of paint forms gluey that partial size is greater than 5 μm of high viscosities after contacting, collide, agglomerate and absorb under the action of turbulent flow
Grain, these colloidal particles are under the action of gravity and inertia force, first in atomization absorption device and after air separation and collection, by
Discharging pump extraction is voluntarily flowed out by gravity, realizes the first time recycling of coating cloud；Due to the oleophylic paint in oleophylic paint liquid mist
Liquid is in the form of droplets, to greatly improve the contact action area between recovery process and coating cloud exhaust gas, and due to turbulator
The flow velocity of exhaust gas is reduced, so that the time of contact between recovery process and coating cloud exhaust gas is improved, when the paint solution droplet in exhaust gas
After in conjunction with oleophylic paint liquid mist drop, paint solution droplet particle becomes larger, so as to more absorb oleophylic paint liquid mist formed it is good
Property circulation, the recovery efficiency of coating cloud is effectively promoted；Simultaneously after atomization process, even if it is micro- still to remain coating cloud in exhaust gas
Drop, droplet size also can generally be increased, and compared with conventional process mode, being atomized that treated, coating cloud exhaust gas is easier quilt
It intercepts and filters, be conducive to subsequent handling and coating cloud is further processed.
In the present invention, the atomization absorption device can be installed additional turbulator by portion in the device or by installing additional in air inlet
Thick blocking apparatus is to strengthen coating cloud absorbability；The thick blocking apparatus includes that baffle plate, cyclone dust collectors or built-in filtering are filled out
The coarse filtration structure of material；The turbulator is used to that the exhaust gas into processing chamber to be made to form turbulent flow to promote the solidifying of coating cloud particle in exhaust gas
Paint thinner spray equipment is set in poly- speed, turbulator or thick blocking apparatus to strengthen the paint solution separated from exhaust gas
Mobility；The bulky grain paint solution that the design can be such that turbulator intercepts is in flow regime, avoids blocking rapids because paint solution is dry
Device is flowed, the recycling that the device intercepts paint solution is also beneficial to.
In the present invention, paint-fog filter, filtering body and filtering body cleaning device, institute are equipped in the atomization postprocessing working procedures
It states in paint-fog filter and is connected equipped with exhaust steam passage with the gas outlet of atomization absorption device, the filtering body is set in a manner of extensible
In in exhaust steam passage, filtering body is formed with the material insoluble in paint solvent；Paint when exhaust gas passes through exhaust steam passage, in exhaust gas
Mist particulate matter is filtered and stayed in and form paint particle in filtering body by filtering body；The filtering body is pressed fixed frequency timing and is substituted
And it is sent into the cleaning of filtering body cleaning device to restore the filter capacity of filtering body, exhaust gas after filtering is from the outlet of exhaust steam passage
Discharge；The filtering body is sent into the cleaning of filtering body cleaning device through manual mode or mechanical mode of movement；The machinery conveying side
Formula include drawer-type movable, chain conveying, it is netted conveying and crawler type conveying one of or it is a variety of, by be continuously conveyed or
It has a rest the mode circulation conveying filtering body of conveying；The design uses secondary interception, due to the drop after atomization process, in coating cloud
It becomes large-sized, it is easier to intercept, therefore using the interception way of recycling of filtering type, can be promoted while keeping treatment effect
Exhaust-gas treatment speed, and the design allows the filter material of recyclable device to be multiplexed, and has both saved cost, but also the filtering of filter material
Interdiction capability can be kept for a long time, be conducive to the processing capacity for promoting recyclable device.
In the present invention, when filtering body is cleaned in filtering body cleaning device, filtering body cleaning device is with paint solvent
The paint particle on simultaneously dissolution filter body is cleaned, paint particle is made to become paint solution；What the filtering body cleaning device generated
Paint solution is admitted to paint room and fresh paint and deploys to realize recycling, or is admitted to after short oil varnish processing unit is concentrated
It is recycled；It is directly used in paint when the paint concentration of the paint solution of the recycling of atomization absorption device is high and is back to spray painting,
When the paint concentration of paint solution is low then as the oleophylic paint liquid mist materials'use of atomization absorption device, return is handled after being atomized
Chamber is absorbed again to improve the concentration collected and expected and facilitate subsequent use；The paint solution of recycling is directly used in scene by the design
Production both improves recovery efficiency, and due to recycling paint solution with live fresh paint at the same model of same brand is belonged to, also keeps away
Different brands or the mixed painting process quality risk being likely to occur of different model paint solution are exempted from.
Detailed description of the invention
The present invention is described in more detail with reference to the accompanying drawings and detailed description:
Attached drawing 1 is processing flow schematic diagram of the invention；
Attached drawing 2 is schematic diagram of the invention；
Attached drawing 3 is the schematic illustration of waste gas processing method of the invention；
Attached drawing 4 is the schematic diagram of waste gas processing method preferred embodiment one of the invention；
Attached drawing 5 is the schematic diagram of waste gas processing method preferred embodiment two of the invention；
Attached drawing 6 is the schematic diagram of waste gas processing method preferred embodiment three of the invention；
Attached drawing 7 is the schematic diagram of waste gas processing method preferred embodiment four of the invention；
In figure: 1- paint spray booth；2- painting nozzle；4- filtering body；5- filtering body conveyer belt；6- filtering body cleaning device；10- oil
Qi Huishou storage tank；11- fine filter；12-VOCs processing equipment；13- air inlet；15- exhaust steam passage；17- workpiece；21- is received
Acquisition means；22- paint thinner spray equipment；23- paint thinner storage tank；24- paint recycling storage tank；25- atomization absorption
Device；26- paint-fog filter；28- turbulator；The gas outlet of 29- atomization absorption device；The processing chamber of 30- atomization absorption device；
31- paint solution storage tank.
Specific embodiment
As shown in Figure 1, 2, a kind of waste gas processing method of coating cloud recycling, the interior waste gas processing method includes atomization absorption
The use of device 25, the atomization absorption device 25 includes air inlet 13, gas outlet 29, mist device processed and processing chamber 30, described
Air inlet 13 is connected with external exhaust gas discharge outlet, the mist device processed with close paint atomizing liquid manufacture liquid mist be sent into processing chamber or
Liquid mist is formed in processing chamber, parent's paint atomizing liquid is paint thinner or oleophylic paint material, when coating cloud exhaust gas enters processing
When chamber, the coating cloud particle in exhaust gas contacts with oleophylic paint liquid mist and forms large-sized sticky colloidal particle, and colloidal particle exists
It is separated from exhaust gas under the action of gravity or inertia force including centrifugal force, forms the paint solution that can be extracted out or flow out, paint solution
The collection device 21 for being atomized absorption plant collects recycling, and the exhaust gas after atomization process is discharged or is sent to subsequent through gas outlet 29
Treatment process continues with.
The atomization absorption device can be installed additional turbulator by portion in the device or by installing thick interception additional in air inlet 13
Device is to strengthen coating cloud absorbability；The thick blocking apparatus includes the thick of baffle plate, cyclone dust collectors or built-in filter packing
Filter structure；The turbulator 28 is used to that the exhaust gas into processing chamber to be made to form turbulent flow to promote the cohesion speed of coating cloud particle in exhaust gas
It spends, paint thinner spray equipment 22 is set in turbulator or thick blocking apparatus to strengthen the stream for the paint solution separated from exhaust gas
Dynamic property.
The baffle plate includes V-type baffle plate or labyrinth type baffle plate or spiral spiral board.
The oleophylic paint liquid mist is with paint thinner or oleophylic paint material (such as thinner or water paint aqueous solution) material
Material production.
The waste gas processing method is divided into following steps by waste gas flow direction.
A1, paint spray booth exhaust gas be withdrawn and delivered to atomization absorption device.
A2, the mist device processed are sent into processing chamber with close paint atomizing liquid manufacture liquid mist or form liquid mist in processing chamber,
Parent's paint atomizing liquid is paint thinner or oleophylic paint material, the coating cloud when coating cloud exhaust gas enters processing chamber, in exhaust gas
Particle contacts with oleophylic paint liquid mist and forms large-sized sticky colloidal particle, and colloidal particle exists in gravity or including centrifugal force
It is separated from exhaust gas under the action of interior inertia force, forms the paint solution that can be extracted out or flow out, paint solution is further processed into recycling
Paint re-uses, or reuses again as oleophylic paint atomized liquid for atomization absorption device.
A3, the exhaust gas direct emission that atomization absorption device is discharged enter later process；Exhaust gas is regarded between subsequent various processes
Mobility status, the optional blower that sets pressurize to overcome exhaust flow impedance to exhaust gas.
A4, exhaust gas are further filtered under Action of Wind pressure by paint-fog filter.
A5, through paint-fog filter, treated that exhaust gas enters that atomization postprocessing working procedures continue with.
Paint-fog filter 26, filtering body 4 and filtering body cleaning device 6, the paint are equipped in the atomization postprocessing working procedures
It is equipped with exhaust steam passage 15 in mist resistant filter 26 to be connected with the gas outlet of atomization absorption device 25, the filtering body 4 is with extensible side
Formula is set in exhaust steam passage 15, and filtering body 4 is formed with the material insoluble in paint solvent；When exhaust gas passes through exhaust steam passage 15,
Coating cloud particulate matter in exhaust gas is filtered and stayed in filtering body 4 and form paint particle by filtering body 4；The filtering body 4 is by solid
Determine frequency timing to substitute and be sent into the cleaning of filtering body cleaning device 6 to restore the filter capacity of filtering body 4, exhaust gas after filtering
It is discharged from the outlet of exhaust steam passage 15.
When filtering body 4 is cleaned in filtering body cleaning device 6, filtering body cleaning device 6 is cleaned simultaneously with paint solvent
Paint particle on dissolution filter body 4 makes paint particle become paint solution.
The paint solution that the filtering body cleaning device 6 generates is admitted to paint room and fresh paint is deployed to realize recycling,
Or it is admitted to after short oil varnish processing unit is concentrated and is recycled.
The exit of the paint-fog filter exhaust steam passage be equipped with detection device, when the waste gas component that detection device measures not
When meeting discharge standard, the exhaust gas being discharged through exhaust steam passage is sent back to atomization absorption device 25 again and is handled again.
When the waste gas component that detection device measures meets discharge standard, the exhaust gas row directly up to standard through exhaust steam passage discharge
Put or directly return to 1 cyclical breathing of paint spray booth, perhaps using VOCs processing equipment 12 be emitted into extraneous or paint spray booth 1 or
The fine particle in exhaust gas is filtered again by fine filter 11 again.
The filtering body 4 is sent into filtering body cleaning device 6 through manual mode or mechanical mode of movement and is cleaned；The machinery is defeated
Sending mode includes one of drawer-type movable, chain conveying, netted conveying and crawler type conveying or a variety of, by being continuously conveyed
Or the mode circulation conveying filtering body 4 of intermittent delivery；Delivery of filtered body 4 is come with filtering body conveyer belt 5 in this example.
The use of the atomization absorption device includes to the used aloned mode of atomization absorption device or multiple being applied in combination
Mode, the multiple mode that is applied in combination is that multiple atomization absorption device groups are combined into atomization absorption array, the atomization absorption
The combination of atomization absorption device in array includes series connection and parallel connection.
In this example, the turbulator installed additional inside atomization absorption device is industry common device, and turbulator structure is similar to big
Turbulator used in diameter absorption tower.
Embodiment 1:
As shown in gas flow arrow in figure, the coating cloud exhaust gas in paint spray booth is expelled to 28 reduction of speed of turbulator and filters, so
The processing chamber 30 for entering atomization absorption device 25 afterwards, mixes with the oleophylic paint liquid mist in processing chamber 30, makes in coating cloud exhaust gas
Paint solution droplet becomes large scale drop and is settled down to processing chamber lower part, is collected device 21 and is drawn to paint solution storage tank, at atomization
Exhaust gas after reason still contains a small amount of coating cloud, send after gas outlet 29 is discharged to paint-fog filter 26 and is further processed.
Filtering body conveyer belt 5 is housed, filtering body conveyer belt 5 is equipped with filtering body in the exhaust steam passage in paint-fog filter 26
4, filtering body conveyer belt 5 moves, and substitutes the filtering body 4 in exhaust steam passage by fixed frequency timing and is sent into filtering body cleaning dress
6 cleanings are set to restore the filter capacity of filtering body 4, when filtering body 4 is cleaned in filtering body cleaning device 6, filtering body is clear
Cleaning device 6 cleans with paint solvent and adsorbs on dissolution filter body 4 paint particle of interception, so that paint particle is become paint molten
Liquid, paint solution are stored in paint recycling storage tank 10.
The exit of paint-fog filter exhaust steam passage is equipped with detection device, when the waste gas component that detection device measures meets row
When putting standard, the exhaust gas through exhaust steam passage discharge is discharged by VOCs processing equipment 12.
Embodiment 2:
When the requirement to coating cloud recovery utilization rate is conventional criteria, as shown in figure 3, the waste gas processing method presses exhaust gas
Flow direction is divided into following steps.
A1, paint spray booth exhaust gas be withdrawn and delivered to atomization absorption device.
A2, the mist device processed are sent into processing chamber with close paint atomizing liquid manufacture liquid mist or form liquid mist in processing chamber,
Parent's paint atomizing liquid is paint thinner or oleophylic paint material, the coating cloud when coating cloud exhaust gas enters processing chamber, in exhaust gas
Particle contacts with oleophylic paint liquid mist and forms large-sized sticky colloidal particle, and colloidal particle exists in gravity or including centrifugal force
It is separated from exhaust gas under the action of interior inertia force, forms the paint solution that can be extracted out or flow out, paint solution is further processed into recycling
Paint re-uses, or reuses again as oleophylic paint atomized liquid for atomization absorption device.
A3, the exhaust gas direct emission that atomization absorption device is discharged enter later process；Exhaust gas is regarded between subsequent various processes
Mobility status, the optional blower that sets pressurize to overcome exhaust flow impedance to exhaust gas.
A4, exhaust gas are further filtered under Action of Wind pressure by paint-fog filter.
A5, through paint-fog filter, treated that exhaust gas enters that atomization postprocessing working procedures continue with.
Embodiment 3:
When to coating cloud recovery utilization rate requirement standard with respect to embodiment 2 it is high when, using preferred embodiment one as shown in figure 4,
The paint solution that paint-fog filter generates is recycled, paint solution has following optional flow direction: 1, be admitted to paint room with
Fresh paint allotment is to realize recycling；2, it is admitted to after short oil varnish processing unit is concentrated and generates recycling paint recycling；3, straight
It takes back to be sent into paint-fog filter and dissolves paint further to increase the concentration of paint solution；4- is treated as close paint atomizing liquid
And it forms oleophylic paint solution mist and is used for atomization absorption device.
Embodiment 4:
When the clean-up effect to exhaust gas need to be strengthened, using preferred embodiment two as shown in figure 5, increasing on the basis of embodiment 3
Add filtering body cleaning device 6, and adds coarse filter device (such as turbulator 28) at the air inlet gas circuit of atomization absorption device.
Filtering body cleaning device 6 becomes paint particle with the paint particle on paint solvent cleaning and dissolution filter body 4
Paint solution；The filtering body cleaning device 6 has following optional flow direction in the resulting paint solution of cleaning process: 1, being sent
Enter paint room and fresh paint is deployed to realize recycling；2, it is admitted to after short oil varnish processing unit is concentrated and generates recycling paint again
It utilizes；3, direct loopback enters further to dissolve paint in paint-fog filter to increase the concentration of paint solution；4- is treated as parent
Paint atomizing liquid simultaneously forms oleophylic paint solution mist for the use of atomization absorption device；5- is treated as close paint atomizing liquid and fills to coarse filtration
It sets and is cleaned to form paint solution.
Resulting paint solution is processed into recycling paint and recycles after coarse filter device (such as turbulator 28) is cleaned.
Embodiment 5:
When the clean-up effect to exhaust gas need to be strengthened, when the requirement standard to coating cloud recovery utilization rate is higher with respect to embodiment 4,
Using preferred embodiment three as shown in fig. 6, on the basis of preferred embodiment two, increase special thin oil at filtering body cleaning device
It paints and handles filtering body cleaning device paint solution generated at processing, the filtering body cleaning device 6 is in cleaning process at this time
Resulting paint solution has following optional flow direction: 1, being admitted to paint room and fresh paint is deployed to realize recycling；2, it is sent
Enter to generate recycling paint after short oil varnish processing unit is concentrated to recycle；3, direct loopback enters further molten in paint-fog filter
Solution is painted to increase the concentration of paint solution；4- is treated as close paint atomizing liquid and forms oleophylic paint solution mist for atomization absorption dress
Set use；5- is treated as close paint atomizing liquid and is cleaned coarse filter device to form paint solution；6, added solvent
Filtering body cleaning device is inputted after forming oleophylic white spirit afterwards with the cleaning ability of intensive filtration body cleaning device.
Embodiment 6:
When the requirement to waste gas purification effect is higher than embodiment 5, using preferred embodiment four as shown in fig. 7, preferred
On the basis of scheme three, fine filter is added at the Waste gas outlet of paint mist filtering device and except VOCS treatment process.
Claims (9)
1. a kind of waste gas processing method of coating cloud recycling, it is characterised in that: include that atomization absorption fills in the waste gas processing method
The use set, the atomization absorption device include air inlet, gas outlet, mist device processed and processing chamber, the air inlet and external
Waste gas outlet is connected, and the mist device processed is sent into processing chamber with close paint atomizing liquid manufacture liquid mist or forms liquid in processing chamber
Mist, parent's paint atomizing liquid is paint thinner or oleophylic paint material, the paint when coating cloud exhaust gas enters processing chamber, in exhaust gas
Mist particle contacts with oleophylic paint liquid mist and is formed large-sized sticky colloidal particle, and colloidal particle is in gravity or including centrifugal force
It is separated from exhaust gas under the action of inertia force inside, forms the paint solution that can be extracted out or flow out, paint solution is atomized absorption plant
Collection device collects recycling, and the exhaust gas after atomization process is discharged or send to subsequent processing process through gas outlet and continues with；
It is directly used in paint when the paint concentration of the paint solution of the recycling of atomization absorption device is high and is back to spray painting, when paint solution
Then as the oleophylic paint liquid mist materials'use of atomization absorption device when paint concentration is low, processing chamber is returned after being atomized and is carried out again
Secondary absorption facilitates subsequent use to improve the concentration collected and expected；
The coating cloud exhaust gas is from external paint spray booth；The ingredient of atomization absorption device recycling paint solution and external paint spray booth scene are new
Paint at belonging to the same model of same brand.
2. a kind of waste gas processing method of coating cloud recycling according to claim 1, it is characterised in that: the atomization absorption dress
Turbulator can be installed additional or by installing thick blocking apparatus additional in air inlet to strengthen coating cloud absorbability by portion in the device by setting；Institute
State the coarse filtration structure that thick blocking apparatus includes baffle plate, cyclone dust collectors or built-in filter packing；The turbulator for make into
The exhaust gas for entering processing chamber forms turbulent flow to promote the agglomeration speed of coating cloud particle in exhaust gas, sets oil in turbulator or thick blocking apparatus
Lacquer diluent spray equipment is to strengthen the mobility of the paint solution separated from exhaust gas.
3. a kind of waste gas processing method of coating cloud recycling according to claim 2, it is characterised in that: the baffle plate includes
V-type baffle plate or labyrinth type baffle plate or spiral spiral board.
4. a kind of waste gas processing method of coating cloud recycling according to claim 1, it is characterised in that: the exhaust-gas treatment side
Method is divided into following steps by waste gas flow direction；
A1, paint spray booth exhaust gas be withdrawn and delivered to atomization absorption device；
A2, the mist device processed are sent into processing chamber with close paint atomizing liquid manufacture liquid mist or form liquid mist in processing chamber, described
Close paint atomizing liquid is paint thinner or oleophylic paint material, the coating cloud particle when coating cloud exhaust gas enters processing chamber, in exhaust gas
Large-sized sticky colloidal particle is contacted and formed with oleophylic paint liquid mist, and colloidal particle is in gravity or including centrifugal force
It is separated from exhaust gas under the action of inertia force, forms the paint solution that can be extracted out or flow out, paint solution is further processed into recycling paint
It re-uses, or is reused again as oleophylic paint atomized liquid for atomization absorption device；
A3, the exhaust gas direct emission that atomization absorption device is discharged enter later process；Exhaust gas flowing is regarded between subsequent various processes
Situation, the optional blower that sets pressurize to overcome exhaust flow impedance to exhaust gas；
A4, exhaust gas are further filtered under Action of Wind pressure by paint-fog filter；
A5, through paint-fog filter, treated that exhaust gas enters that atomization postprocessing working procedures continue with.
5. a kind of waste gas processing method of coating cloud recycling according to claim 4, it is characterised in that: the atomization post-processing
In-process is equipped with paint-fog filter, filtering body and filtering body cleaning device, is equipped with exhaust steam passage and mist in the paint-fog filter
The gas outlet for changing absorption plant is connected, and the filtering body is set in exhaust steam passage in a manner of extensible, and filtering body is insoluble in oil
The material of white spirit forms；When exhaust gas passes through exhaust steam passage, the coating cloud particulate matter in exhaust gas is filtered and stayed in by filtering body
Paint particle is formed in filtering body；The filtering body is substituted by fixed frequency timing and is sent into the cleaning of filtering body cleaning device with extensive
The filter capacity of multiple filtering body, exhaust gas after filtering are discharged from the outlet of exhaust steam passage.
6. a kind of waste gas processing method of coating cloud recycling according to claim 5, it is characterised in that: when filtering body is filtering
When being cleaned in body cleaning device, filtering body cleaning device is made with the paint particle on paint solvent cleaning and dissolution filter body
Paint particle becomes paint solution.
7. a kind of waste gas processing method of coating cloud recycling according to claim 6, it is characterised in that: the filtering body cleaning
The paint solution that device generates is admitted to paint room and fresh paint is deployed to realize recycling, or is admitted to short oil varnish processing unit
It is recycled after being concentrated.
8. a kind of waste gas processing method of coating cloud recycling according to claim 5, it is characterised in that: the filtering body is handled
Flowing mode or mechanical mode of movement are sent into the cleaning of filtering body cleaning device；The machinery mode of movement includes drawer-type movable, chain
Formula conveying, it is netted conveying and crawler type conveying one of or it is a variety of, be continuously conveyed or intermittent delivery by way of recycle it is defeated
Pass through filter body.
9. a kind of waste gas processing method of coating cloud recycling according to claim 1, it is characterised in that: the atomization absorption dress
The use set includes to the used aloned mode of atomization absorption device or multiple mode, the multiple side of being applied in combination being applied in combination
Formula is that multiple atomization absorption device groups are combined into atomization absorption array, the group of the atomization absorption device in the atomization absorption array
Conjunction mode includes series connection and parallel connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710000430.7A CN106621669B (en) | 2017-01-03 | 2017-01-03 | Waste gas treatment method for recycling paint mist |
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| CN201710000430.7A CN106621669B (en) | 2017-01-03 | 2017-01-03 | Waste gas treatment method for recycling paint mist |
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| CN106621669A CN106621669A (en) | 2017-05-10 |
| CN106621669B true CN106621669B (en) | 2019-04-02 |
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| CN201710000430.7A Active CN106621669B (en) | 2017-01-03 | 2017-01-03 | Waste gas treatment method for recycling paint mist |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114985122B (en) * | 2022-05-25 | 2024-03-22 | 江苏原创美妆有限公司 | Centrifugal recovery unit of UV coating cloud |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101455930A (en) * | 2008-12-08 | 2009-06-17 | 裴登明 | Paint mist purification device |
| CN102794245A (en) * | 2012-08-31 | 2012-11-28 | 张正泉 | Waste gas utilization system for paint spray booth |
| CN104069958A (en) * | 2014-07-08 | 2014-10-01 | 中节能天辰(北京)环保科技有限公司 | Dry-type paint mist trapping device and dry-type paint mist trapping method |
| CN204018101U (en) * | 2014-08-12 | 2014-12-17 | 南康蓝天木业有限公司 | A kind of paint spray booth coating cloud collection and purification device |
| CN204502683U (en) * | 2015-02-09 | 2015-07-29 | 北京华创朗润环境科技有限公司 | A kind of novel lacquer fog purifier |
| CN205760278U (en) * | 2016-05-16 | 2016-12-07 | 福建省天朗环保设备有限公司 | A kind of coating cloud recovering and purifying system |
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