CN114798369B - Coating machine oven and coating machine waste gas recovery system - Google Patents
Coating machine oven and coating machine waste gas recovery system Download PDFInfo
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- CN114798369B CN114798369B CN202210425773.9A CN202210425773A CN114798369B CN 114798369 B CN114798369 B CN 114798369B CN 202210425773 A CN202210425773 A CN 202210425773A CN 114798369 B CN114798369 B CN 114798369B
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- 238000011084 recovery Methods 0.000 title claims abstract description 105
- 238000000576 coating method Methods 0.000 title claims abstract description 34
- 239000011248 coating agent Substances 0.000 title claims abstract description 32
- 239000002912 waste gas Substances 0.000 title claims abstract description 26
- 239000007789 gas Substances 0.000 claims abstract description 135
- 238000001035 drying Methods 0.000 claims abstract description 129
- 238000000034 method Methods 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 18
- 238000004064 recycling Methods 0.000 claims description 13
- 239000002002 slurry Substances 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 8
- 238000009833 condensation Methods 0.000 claims description 7
- 238000007710 freezing Methods 0.000 claims description 6
- 230000008014 freezing Effects 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 239000003595 mist Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000010276 construction Methods 0.000 abstract description 8
- 239000002699 waste material Substances 0.000 abstract description 4
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 27
- 238000012545 processing Methods 0.000 description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 229910052744 lithium Inorganic materials 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 2
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
Landscapes
- Drying Of Solid Materials (AREA)
Abstract
The application provides a coating machine oven and a coating machine waste gas recovery system, wherein the coating machine oven comprises a first box body and a second box body, a drying area for drying a target product is limited in the first box body, a wind supply recovery device is arranged in the second box body, a drying air inlet and a waste gas outlet are arranged on the first box body, the wind supply recovery device comprises a wind supply recovery air inlet and a wind supply recovery air outlet, the waste gas outlet is communicated with the wind supply recovery air inlet, and the drying air inlet is communicated with the wind supply recovery air outlet. The drying oven of the coating machine has the functions of drying and organic gas recovery, realizes the air-free pipe, can reduce the construction period of air pipe construction and equipment cost on one hand, and can accurately control necessary circulating air quantity on the other hand, reduce the problem of energy waste caused by overlarge circulating air quantity, reduce the adjustment time required by equipment starting, reduce the invalid running time of the equipment and improve the production efficiency of the drying oven of the coating machine on the other hand.
Description
Technical Field
The application relates to the technical field of organic gas recovery, in particular to a coater oven and a coater waste gas recovery system.
Background
In the production process of the lithium battery, coating is a very important step, equipment mainly used in the step is a coating machine, an oven is used as a most important part of the coating machine, the coating machine comprises a plurality of oven units, each oven unit is mutually communicated into a whole, a coated substrate advances in the oven in the same direction, the coated substrate is continuously baked at high temperature in each oven unit in the advancing process and is dried, and the lithium battery pole piece is accompanied by the generation of high-temperature N-methylpyrrolidone (NMP) waste gas in the process of coating and drying. NMP has the problems of high cost, harm to human health, influence on production safety and the like, and if the NMP is directly discharged, the NMP not only pollutes the environment, but also causes energy waste. Therefore, NMP waste gas generated in the coating process needs to be treated in the lithium battery production, so that standard emission is realized.
At present, various recovery modes of NMP generated in the coating process exist, the traditional common recovery mode is shown in fig. 1, and N-section (usually 10-12-section) ovens on each coating machine production line are intensively treated by adopting one NMP recovery device. This approach has the following problems:
1. the concentration of NMP in each section of oven cannot be precisely controlled;
2. In order to meet the requirement of the maximum allowable concentration in the oven, the problems of energy waste caused by overlarge air discharge and air supply quantity exist;
3. all ovens are processed in a centralized way, and the problems of windage loss caused by overlarge air pipes and long air supply distance exist;
4. And the air quantity adjustment of each section of oven is complex and the time is too long when the production/replacement of the product is started.
In order to solve the above problems, it is proposed to use one NMP recovery device for each oven or for every two ovens, and as shown in fig. 2, the above problems can be solved, but each NMP recovery device needs to be connected to the oven through a return air line and a supply air line. The air pipe is required to be constructed on site, so that the construction time is prolonged, the construction cost is increased, the distance of the air pipe is shortened, the air quantity is reduced, the air supply resistance and the air return resistance are greatly reduced, and the problems of air return loss, air supply windage loss and the like still exist.
In view of the foregoing, there is a need for a new coater oven to solve the above problems.
Disclosure of Invention
In order to solve one or more of the above technical problems in the prior art, the embodiment of the application provides a novel air-duct-free coater oven, so as to achieve the technical effects of efficiently recycling organic gas and saving energy.
In order to achieve the above purpose, the technical scheme adopted by the application for solving the technical problems is as follows:
In a first aspect, the application provides a coater oven, which comprises a first box body and a second box body, wherein a drying area for drying a target product is limited in the first box body, and a supply air recovery device is arranged in the second box body;
The drying air inlet and the waste gas outlet are formed in the first box body, the air supply recycling device comprises an air supply recycling air inlet and an air supply recycling air outlet, the waste gas outlet is communicated with the air supply recycling air inlet, and the drying air inlet is communicated with the air supply recycling air outlet.
In a specific embodiment, the air supply and recovery device comprises an air supply assembly and a recovery assembly, the air supply and recovery air inlet comprises an air supply air inlet of the air supply assembly and a recovery air inlet of the recovery assembly, and the air supply and recovery air outlet comprises an air supply air outlet of the air supply assembly and a recovery air outlet of the recovery assembly.
In a specific embodiment, the exhaust gas outlet includes a first exhaust gas outlet and a second exhaust gas outlet, the first exhaust gas outlet is in communication with the recovery air inlet, the second exhaust gas outlet and the recovery air outlet are in communication with the air supply air inlet, and the air supply air outlet is in communication with the drying air inlet.
In a specific embodiment, the exhaust gas outlet includes a first exhaust gas outlet and a second exhaust gas outlet, the first exhaust gas outlet is respectively communicated with the recovery air inlet and the air supply air inlet, the second exhaust gas outlet, the first exhaust gas outlet and the recovery air outlet are all communicated with the air supply air inlet, and the air supply air outlet is communicated with the drying air inlet.
In a specific embodiment, the exhaust gas outlet includes a first exhaust gas outlet and a second exhaust gas outlet, the first exhaust gas outlet, the second exhaust gas outlet and the recovery gas outlet are all communicated with the air supply inlet, the first exhaust gas outlet and the second exhaust gas outlet are all communicated with the recovery gas inlet, and the air supply outlet is communicated with the drying gas inlet.
In a specific embodiment, the target product includes a first surface and a second surface that are disposed opposite to each other, the first surface is coated with slurry to be dried, the drying area includes a first drying area and a second drying area, the first surface corresponds to the first drying area, the second surface corresponds to the second drying area, the first exhaust gas outlet is disposed at a position of the first box corresponding to the first drying area, and the second exhaust gas outlet is disposed at a position of the first box corresponding to the second drying area.
In a specific embodiment, the drying air inlet includes a first drying air inlet and a second drying air inlet, the first drying air inlet is disposed at a position of the first box corresponding to the first drying area, and the second drying air inlet is disposed at a position of the first box corresponding to the second drying area.
In a specific embodiment, the amount of processed air entering the recovery air inlet is less than the amount of processed air entering the supply air inlet.
In a specific embodiment, the recovery assembly comprises at least one heat exchanger, at least one condenser and at least one treatment fan, wherein the heat exchanger, the condenser and the treatment fan are sequentially connected to form an organic gas heat exchange-condensation recovery circulation flow path.
In a specific embodiment, the recovery assembly further comprises at least one mist eliminator disposed between the condenser and the process fan.
In a specific embodiment, the condenser comprises at least one of a cooling coil, a freezing coil, a heat pipe, a direct expansion coil.
In a specific embodiment, the condenser comprises a direct expansion coil.
In a specific embodiment, the air supply assembly comprises at least one circulating fan and at least one heater which are connected in sequence.
In a specific embodiment, the air supply member further comprises at least one filter
In a second aspect, the application also provides a waste gas recovery system of a coating machine, which comprises at least one layer of drying module, wherein each layer of drying module comprises a plurality of drying boxes of the coating machine.
The technical scheme provided by the embodiment of the application has the beneficial effects that:
According to the coater oven and the coater exhaust gas recovery system provided by the embodiment of the application, the coater oven comprises the first oven body and the second oven body, a drying area for drying target products is limited in the first oven body, the second oven body is internally provided with the air supply recovery device, the first oven body is provided with the drying air inlet and the exhaust gas outlet, the air supply recovery device comprises the air supply recovery air inlet and the air supply recovery air outlet, the exhaust gas outlet is communicated with the air supply recovery air inlet, the drying air inlet is communicated with the air supply recovery air outlet, and the recovery assembly of organic gas such as NMP (N-methyl pyrrolidone) is coupled in each section of coater oven, so that the coater oven has drying and organic gas recovery functions, on one hand, the problem of long construction period caused by air pipe construction can be reduced, the equipment cost can be reduced, on the other hand, each section of oven can accurately control necessary circulating air quantity, the problem of energy waste caused by overlarge air quantity can be reduced, each section of oven can be independently and accurately regulated, the required time for starting the equipment can be reduced, and the ineffective time can be reduced;
further, in the coating machine oven and the coating machine exhaust gas recovery system provided by the embodiments of the present application, because the gas entering the recovery component is the gas with higher NMP concentration on the slurry to be dried coated on the first surface of the target product, the processing air volume entering the recovery air inlet is set to be smaller than the processing air volume entering the air supply air inlet, so that the usage amount of cooling water and chilled water required by the recovery component in the process of recovering the exhaust gas such as organic gas, and the usage amount of heat conduction oil for subsequent heating can be reduced, thereby reducing energy consumption, saving operation cost, reducing manufacturing cost of lithium batteries, and reducing carbon emission;
Further, according to the coater oven and the coater waste gas recovery system provided by the embodiment of the application, the condenser is arranged to adopt the direct expansion coil, so that when leakage occurs in the coil, cooling water is prevented from flowing into the coater oven to cause secondary damage.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of NMP recovery in a coating and drying exhaust gas treatment system according to the prior art;
FIG. 2 is a schematic diagram of NMP recovery from another prior art coating and drying exhaust treatment system;
fig. 3 is a schematic diagram of an oven of a coater according to a first embodiment of the present application;
fig. 4 is a schematic diagram of an oven for a coater according to a second embodiment of the present application;
fig. 5 is a schematic diagram of an oven for a coater according to a third embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
The coater oven in the application comprises, but is not limited to, a coater cathode oven, and the waste gas to be recovered and treated comprises, but is not limited to, organic gases such as NMP and the like. For convenience of description, the coater oven in the following preferred embodiments will be described by taking the coater cathode oven as an example and taking NMP as an example as exhaust gas, but it should be understood that the coater oven in the present application should not be limited to the coater electrode oven, and any production device that generates exhaust gas such as organic gas in production and requires air supply and exhaust, such as lithium battery coating oven, printing, semiconductor, adhesive tape manufacturing, etc. may use the solution of the present application, the coater cathode oven should not be understood as limiting the coater oven in the present application, NMP should not be understood as limiting the exhaust gas in the present application, and other coating related organic gases such as toluene, N-Dimethylacetamide (DMAC), N-Dimethylformamide (DMF) may also be recovered by using the coater oven in the present application.
As described in the background art, the conventional coating machine oven generally only has a drying function, and recovery treatment of organic gases such as NMP (N-methyl pyrrolidone) and the like is generally realized by an external recovery device of an air pipe, so that a large number of ventilation pipes are connected outside the oven, and the ventilation pipes are required to be constructed on site, thereby causing a series of problems of increasing construction time, increasing construction cost, large air return and air supply wind resistance and the like. In view of one or more of the above problems, a new coater oven is created in the embodiments of the present application, which realizes a ductless coater oven by disposing an air supply assembly and a recovery assembly integrally inside the oven.
Example 1
Fig. 3 is a schematic diagram of a coater oven according to a first embodiment of the present application, and referring to fig. 3, the coater oven generally includes a first box 100, a second box 200, and an air supply recovery device 300. Wherein, the air supply recycling device 300 is integrally disposed inside the second casing 200. The first box 100 defines a drying area 110 inside, and the drying area 110 is used for allowing a target product after coating the slurry to pass through, so as to dry the target product after coating the slurry and recover organic gases such as NMP generated in the drying process under the cooperation of the air supply recovery device 300. The first casing 100 is provided with a drying air inlet 120 and a waste gas outlet 130, and as a preferred example, the drying air inlet 120 and the waste gas outlet 130 may be respectively formed on two opposite sidewalls of the first casing 100 to form an air supply and exhaust loop. As an illustrative, but non-limiting example, the target products of the present application include, but are not limited to, cathode sheets, which are all exemplified below for convenience of explanation.
With further reference to FIG. 3, the air supply recovery device 300 includes an air supply assembly 310 and a recovery assembly 320. The air supply assembly 310 is mainly used for supplying hot air with a certain temperature into the drying area 110 in the first box 100 to dry the cathode sheet 400 (i.e. the target product) after the slurry is coated. The recovery component 320 is mainly used for recovering and processing organic gases such as NMP generated in the process of drying the cathode pole piece coated with the slurry in the first box 100. In particular, at least one air inlet 311 and at least one air outlet 312 are provided on the air supply assembly 310, and at least one recovery air inlet 321 and at least one recovery air outlet 322 are provided on the recovery assembly 320.
Typically, the cathode sheet 400 and other products need only be coated with a slurry on one side and not on the other side. The cathode sheet 400 is configured to include a first surface 410 and a second surface 420, the first surface 410 and the second surface 420 being disposed opposite to each other, the first surface 410 being coated with a paste, and the second surface 420 being coated with no paste. Thus, during the drying process, the concentration of the organic gas such as NMP in the region corresponding to the first surface 410 coated with the slurry is slightly higher than the concentration of the organic gas such as NMP in the region corresponding to the second surface 420 not coated with the slurry, and thus, the gas in the region corresponding to the first surface 410 can be preferentially recovered and treated when the recovery treatment of the organic gas such as NMP is performed.
Because the gas entering the recovery component 320 is the gas with higher concentration of the organic gas such as NMP, the processing air quantity entering the recovery air inlet 321 of the recovery component 320 can be smaller than the processing air quantity entering the air supply air inlet 311 of the air supply component 310, so that the consumption of cooling water and freezing water required by the recovery component in the process of recovering the organic gas and the consumption of heat conduction oil for subsequent heating are reduced, the energy consumption is reduced, the running cost is saved, the manufacturing cost of the lithium battery is reduced, and the carbon emission is reduced.
In particular, as a preferred embodiment, the drying area 110 in the present application may be divided into a first drying area 111 and a second drying area 112. Wherein the first drying area 111 corresponds to the first surface 410, and the second drying area 112 corresponds to the second surface 420. Correspondingly, the exhaust gas outlet 130 provided on the first case 100 may include a first exhaust gas outlet 131 and a second exhaust gas outlet 132. The first exhaust gas outlet 131 is disposed at a position of the first casing 100 corresponding to the first drying area 111 to communicate with the first drying area 111, and the second exhaust gas outlet 132 is disposed at a position of the first casing 100 corresponding to the second drying area 112 to communicate with the second drying area 112.
Since the drying area 110 includes two parts, namely the first drying area 111 and the second drying area 112, in order to improve the drying effect of the coating machine oven, the drying air inlet 120 provided in the present application includes a first drying air inlet 121 provided corresponding to the first drying area 111 and a second drying air inlet 122 provided corresponding to the second drying area 112, that is, the first drying air inlet 121 is provided at a position of the first case 100 corresponding to the first drying area 111 so as to be in communication with the first drying area 111, and the second drying air inlet 122 is provided at a position of the first case 100 corresponding to the second drying area 112 so as to be in communication with the second drying area 112. A first air supply and exhaust loop is formed in the first drying area 111 through the first drying air inlet 121 and the first exhaust air outlet 131, and a second air supply and exhaust loop is formed in the second drying area 112 through the second drying air inlet 122 and the second exhaust air outlet 132. It should be understood that the first air supply and exhaust circuit and the second air supply and exhaust circuit are not two separate closed spaces in space, and a part of air flowing from the first drying air inlet 121 may flow out from the second air outlet 132, and a part of air flowing from the second drying air inlet 122 may also flow out from the first air outlet 131, where the first air supply and exhaust circuit and the second air supply and exhaust circuit merely represent a positional relationship therebetween, and are not understood as limiting the protection range.
With further reference to FIG. 3, as a preferred embodiment, the recovery assembly 320 includes a heat exchanger 323, a condenser 324, a process fan 325, and a mist eliminator 326. Wherein the heat exchanger 323, the condenser 324, the demister 326 and the treatment fan 325 are sequentially connected to form an organic gas heat exchange-condensation recovery circulation flow path, and the air volume in the circulation flow path can be controlled by the treatment fan 325. The heat exchanger 323 includes a high temperature gas inlet, a high temperature gas outlet, a low temperature gas inlet, and a low temperature gas outlet. The high temperature gas inlet is the recovery gas inlet 321 of the recovery component 320, which is connected with the first waste gas outlet 131 on the first box 100, the low temperature gas outlet is connected with the inlet of the condenser 324, the outlet of the condenser 324 is connected with the inlet of the demister 326, the outlet of the demister 326 is connected with the inlet of the treatment fan 325, the outlet of the treatment fan 325 is connected with the low temperature gas inlet, and the high temperature gas outlet is the recovery gas outlet 322 of the recovery component 320, which is connected with the air supply inlet 311.
In the exhaust gas treatment process, the high-temperature exhaust gas generated in the first drying area 111 enters the high-temperature gas inlet of the heat exchanger 323 from the first exhaust gas outlet 131, then exchanges heat with the low-temperature exhaust gas flowing into the low-temperature gas inlet of the heat exchanger 323, the low-temperature exhaust gas converted by the heat exchange of the high-temperature exhaust gas enters the inlet of the condenser 324 from the low-temperature gas outlet of the heat exchanger 323, is condensed and recovered in the condenser 324, the low-temperature gas after condensation and recovery flows into the inlet of the demister 326 from the outlet of the condenser 324, after liquid such as condensate carried in the gas is removed by the demister 326, the low-temperature gas enters the low-temperature gas inlet of the heat exchanger 323 from the outlet of the demister 326, is converted into high-temperature gas after heat exchange with the high-temperature gas in the heat exchanger 323, then enters the air supply inlet 311 from the high-temperature gas outlet, and then reenters the first box 100 after heat treatment by the air supply assembly 310, thus forming the organic gas heat exchange-condensation and recovery circulation flow path.
It should be noted that, in the embodiment of the present application, the specific components included in the recovery unit 320 are not limited, and a user may select one or more of the heat exchanger 323, the condenser 324, the processing fan 325, and the demister 326 according to actual needs. In addition, the embodiment of the present application is not limited to the specific number of the heat exchanger 323, the condenser 324, the processing fan 325, and the demister 326, and the user may set the number according to actual needs.
As a preferred embodiment, the heat exchanger 323 in the present embodiment comprises at least one of a corrugated-plate type gas-gas exchanger or a heat pipe heat exchanger. Preferably a corrugated-plate gas-gas exchanger, and is inclined at an angle of 45 deg. to the bottom surface of the housing. It should be understood herein that the type, number and arrangement of heat exchangers in the present application are only preferred examples, and any other conventional heat exchangers in the prior art, such as shell-and-tube heat exchangers, double tube plate heat exchangers, ceramic heat exchangers, regenerative heat exchangers, etc., are also contemplated as falling within the scope of the present application.
The condenser in embodiments of the present application is preferably a combination of both cooling coil 324a and freezing coil 324 b. It should be understood herein that this embodiment is only a preferred example, and one skilled in the art can select at least one of a cooling coil, a freezing coil, a heat pipe, a direct expansion coil as a condenser according to actual needs. The cooling coil and the freezing coil should not be considered as limiting the scope of protection of the condenser in the practice of the application.
The condenser in the embodiment of the application is further preferably a direct expansion coil, so that when leakage occurs in the coil, no cooling water flows into an oven of the coating machine to cause secondary damage.
As a preferred embodiment, the recovery assembly 320 may further include a pressure regulator 327, wherein the pressure regulator 327 is disposed between the process fan 325 and the heat exchanger 323 to maintain negative pressure exhaust.
In the embodiment of the present application, the air supply assembly 310 comprises a circulating fan 313, a heater 314 and a filter 315, wherein the circulating fan 313, the heater 314 and the filter 315 are sequentially connected, the inlet of the circulating fan 313 is the air supply inlet 311 of the air supply assembly 310, and the outlet of the filter 315 is the air supply outlet 312 of the air supply assembly 310. The circulation fan 313 can realize the accurate control of the amount of wind that gets into the heater 314. It should be noted that, in the embodiment of the present application, specific components included in the air supply assembly 310 are not limited, and a user may select one or more of the circulation fan 313, the heater 314, and the filter 315 according to actual needs. In addition, the embodiment of the present application is not limited to the specific number of the circulating fan 313, the heater 314 and the filter 315, and the user may set the number according to the actual requirement.
Referring further to fig. 3, in the embodiment of the present application, the inlet of the circulation fan 313 is connected to the second exhaust gas outlet 132 and the high temperature gas outlet of the heat exchanger 323, the outlet of the circulation fan 313 is connected to the inlet of the heater 314, the outlet of the heater 314 is connected to the inlet of the filter 315, and the outlet of the filter 315 is connected to the first drying air inlet 121 and the second drying air inlet 122 of the first casing 100. In the air supply process, the high-temperature exhaust gas generated in the second drying area 112 and the high-temperature gas from the heat exchanger 320 enter the inlet of the circulating fan 313, then enter the inlet of the heater 314 through the circulating fan 313, are heated by the heater 314, enter the inlet of the filter 315 from the outlet of the heater 314, filter the impurities such as dust carried in the gas through the filter 315, and enter the first drying air inlet 121 and the second drying air inlet 122 through the outlet of the filter 315, so as to enter the first drying area 111 and the second drying area 112, and form an air supply and exhaust loop in the first drying area 111 and the second drying area 112 respectively.
Example two
The second embodiment is another preferred embodiment in the industry, and is different from the first embodiment in that, referring to fig. 4, the first exhaust gas outlet 131 is communicated with the high temperature gas inlet of the heat exchanger 323 and the inlet of the circulating fan 313.
Referring further to fig. 4, a part of the high-temperature exhaust gas generated in the first drying area 111 enters the high-temperature gas inlet of the heat exchanger 323 from the first exhaust gas outlet 131, is subjected to the organic gas recovery treatment through the organic gas heat exchange-condensation recovery circulation flow path formed by the heat exchanger 323, the condenser 324, the demister 326 and the treatment fan 325, and the other part of the high-temperature exhaust gas generated in the first drying area 111 enters the circulation fan 313 inlet together with the high-temperature exhaust gas generated in the second drying area 112 from the first exhaust gas outlet 131 and the high-temperature gas after heat exchange from the heat exchanger 320, and enters the first drying area 111 and the second drying area 112 after being treated by the circulation fan 313, the heater 314 and the filter 315, so as to form an air supply and exhaust loop in the first drying area 111 and the second drying area 112, respectively. The specific exhaust gas treatment process and the air supply process can refer to the related matters in the first embodiment, and are not described in detail herein.
Example III
The third preferred embodiment in the industry is different from the first preferred embodiment in that, referring to fig. 5, the first exhaust gas outlet 131 is connected to the inlet of the circulating fan 313, the outlet of the circulating fan 313 is connected to the high temperature gas inlet of the heat exchanger 323, that is, the first exhaust gas outlet 131, the second exhaust gas outlet 132 and the recovery gas outlet 322 are connected to the recovery gas inlet through the circulating fan 313, so that part of the return air is returned to the high temperature gas inlet of the heat exchanger 323 of the recovery assembly 320. The return air returned to the high temperature gas inlet of the heat exchanger 323 is disposed downstream of the circulation fan 313, so that the circulation fan 313 is prevented from interfering with the inlet of the process fan 325 in the recovery unit 320. It should be understood that the installation position of the circulation fan 313 in the present embodiment is merely a preferred example, and those skilled in the art may set the circulation fan 313 at any suitable position in the air supply assembly 310 according to actual needs, for example: the circulation fan 313 is disposed between the heater 314 and the filter 315, and directly returns a portion of the return air of the first and second exhaust air outlets 131 and 132 and the recovery air outlet 322 to the high temperature gas inlet of the heat exchanger 323.
Referring to fig. 5, the high temperature exhaust gas generated in the first drying area 111, the high temperature exhaust gas generated in the second drying area 112 and the high temperature gas from the heat exchanger 320 enter the inlet of the circulation fan 313, a part of the high temperature gas enters the inlet of the heat exchanger 320 through the outlet of the circulation fan 313, the organic gas is recycled through the organic gas heat exchange-condensation recycling flow path formed by the heat exchanger 323, the condenser 324, the demister 326 and the treatment fan 325, the other part of the organic gas enters the inlet of the heater 314 through the outlet of the circulation fan 313, and the other part of the organic gas enters the first drying area 111 and the second drying area 112 after being processed by the heater 314 and the filter 315, so that an air supply and exhaust loop is formed in the first drying area 111 and the second drying area 112 respectively. The specific exhaust gas treatment process and the air supply process can refer to the related matters in the first embodiment, and are not described in detail herein.
The application also provides a waste gas recovery system of the coating machine corresponding to the drying oven of the coating machine, wherein the system comprises at least one layer of drying module, and each layer of drying module comprises a plurality of drying ovens of the coating machine.
In the description of the present application, it should be understood that the terms "vertical," "parallel," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
The foregoing description of the preferred embodiments of the application is not intended to limit the application to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the application are intended to be included within the scope of the application.
Claims (11)
1. The coating machine oven is characterized by comprising a first box body and a second box body, wherein a drying area for drying a target product is limited in the first box body, and an air supply recovery device is arranged in the second box body;
The first box body is provided with a drying air inlet and a waste gas outlet, the air supply recycling device comprises an air supply recycling air inlet and an air supply recycling air outlet, the waste gas outlet is communicated with the air supply recycling air inlet, and the drying air inlet is communicated with the air supply recycling air outlet;
the air supply and recovery device comprises an air supply assembly and a recovery assembly, wherein the air supply and recovery air inlet comprises an air supply air inlet of the air supply assembly and a recovery air inlet of the recovery assembly, and the air supply and recovery air outlet comprises an air supply air outlet of the air supply assembly and a recovery air outlet of the recovery assembly;
The waste gas outlet comprises a first waste gas outlet and a second waste gas outlet, the first waste gas outlet is communicated with the recovery air inlet, the second waste gas outlet and the recovery air outlet are communicated with the air supply air inlet, and the air supply air outlet is communicated with the drying air inlet;
the target product comprises a first surface and a second surface which are oppositely arranged, wherein the first surface is coated with slurry to be dried, organic gas to be recycled is generated in the drying process of the target product after the slurry is coated, the drying area comprises a first drying area and a second drying area, the first surface corresponds to the first drying area, the second surface corresponds to the second drying area, and the concentration of the organic gas in the first drying area is larger than that in the second drying area; the first waste gas outlet is arranged at the position of the first box body corresponding to the first drying area, and the second waste gas outlet is arranged at the position of the first box body corresponding to the second drying area;
the processed air quantity entering the recovery air inlet is smaller than the processed air quantity entering the air supply air inlet.
2. The coater oven of claim 1, wherein said first exhaust gas outlet is further in communication with said air supply inlet.
3. The coater oven of claim 2, wherein the first exhaust gas outlet, the second exhaust gas outlet, and the recovery gas outlet are all in communication with the recovery gas inlet.
4. The coater oven of claim 1, wherein the drying air inlet comprises a first drying air inlet and a second drying air inlet, the first drying air inlet being disposed at a position of the first housing corresponding to the first drying zone, the second drying air inlet being disposed at a position of the first housing corresponding to the second drying zone.
5. A coater oven as set forth in any one of claims 1 to 3 wherein said recovery assembly comprises at least one heat exchanger, at least one condenser and at least one process fan, wherein said heat exchanger, said condenser and said process fan are connected in sequence to form an organic gas heat exchange-condensation recovery circulation flow path.
6. The coater oven of claim 5, wherein the recovery assembly further comprises at least one mist eliminator disposed between the condenser and the process fan.
7. The coater oven of claim 5, wherein the heat exchanger comprises at least one of a corrugated plate type gas-gas exchanger or a heat pipe heat exchanger.
8. The coater oven of claim 5, wherein the condenser comprises one or a combination of cooling coils, freezing coils, heat pipes, direct expansion coils.
9. A coater oven as set forth in any one of claims 1 to 3 wherein said air supply assembly comprises at least one circulating fan and at least one heater connected in sequence.
10. The coater oven of claim 9, wherein said air supply assembly further comprises at least one filter.
11. A coater exhaust gas recovery system, characterized in that said system comprises at least one layer of drying modules, each layer of said drying modules comprising a number of coater ovens according to any one of claims 1 to 10.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210425773.9A CN114798369B (en) | 2022-04-21 | 2022-04-21 | Coating machine oven and coating machine waste gas recovery system |
| PCT/CN2023/084414 WO2023202332A1 (en) | 2022-04-21 | 2023-03-28 | Drying oven for coating machine, and waste gas recovery system for coating machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210425773.9A CN114798369B (en) | 2022-04-21 | 2022-04-21 | Coating machine oven and coating machine waste gas recovery system |
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| Publication Number | Publication Date |
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| CN114798369A CN114798369A (en) | 2022-07-29 |
| CN114798369B true CN114798369B (en) | 2024-06-04 |
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| CN202210425773.9A Active CN114798369B (en) | 2022-04-21 | 2022-04-21 | Coating machine oven and coating machine waste gas recovery system |
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| Country | Link |
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| CN (1) | CN114798369B (en) |
| WO (1) | WO2023202332A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114798369B (en) * | 2022-04-21 | 2024-06-04 | 苏州兆和环能科技有限公司 | Coating machine oven and coating machine waste gas recovery system |
| CN116329049B (en) * | 2022-12-30 | 2024-09-20 | 三一技术装备有限公司 | Oven, coating equipment and lithium battery production system |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102198337A (en) * | 2010-03-22 | 2011-09-28 | 杨峥雄 | Environment-friendly energy-saving exhaust gas treatment device and method |
| CN103223398A (en) * | 2013-04-21 | 2013-07-31 | 杨峥雄 | Vertical type gluing machine drying box and energy-saving method thereof |
| CN108773175A (en) * | 2018-06-15 | 2018-11-09 | 江阴市旭高机械有限公司 | Energy conservation and environmental protection heated oven |
| CN110698037A (en) * | 2019-11-15 | 2020-01-17 | 江苏博一环保科技有限公司 | Air-out drainage type sludge drying system based on heat pump technology |
| CN210113265U (en) * | 2019-05-21 | 2020-02-25 | 浙江威治环保科技有限公司 | Sludge drying device |
| CN210337223U (en) * | 2019-05-06 | 2020-04-17 | 上海界龙永发包装印刷有限公司 | Heating device of gravure printing machine |
| CN111544920A (en) * | 2020-05-19 | 2020-08-18 | 东莞欧赛莱机电科技有限公司 | NMP recovery system and lithium battery coating system |
| CN212227549U (en) * | 2020-06-09 | 2020-12-25 | 上海澈慧环保科技有限公司 | Device for condensation, dehumidification, drying and condensate recovery after evaporation |
| CN113842746A (en) * | 2021-09-17 | 2021-12-28 | 苏州兆和通风设备制造有限公司 | Organic gas recovery modular assembly and coating machine waste gas treatment system |
| CN114146879A (en) * | 2021-10-12 | 2022-03-08 | 苏州兆和环能科技有限公司 | Production equipment heat recovery humidity control module and heat recovery humidity control system applying same |
| CN216049027U (en) * | 2021-09-09 | 2022-03-15 | 四川砥弘科技有限公司 | Integrated heat pump with heat recovery and dehumidification functions and drying device applied to integrated heat pump |
| WO2022068970A1 (en) * | 2020-10-16 | 2022-04-07 | 青岛海尔空调器有限总公司 | Drying system and laundry treatment apparatus comprising same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005024160A (en) * | 2003-07-01 | 2005-01-27 | Tetsuji Moriguchi | Dehumidifying drier and dehumidifying drying method |
| CN216320933U (en) * | 2021-07-31 | 2022-04-19 | 苏州兆和环能科技有限公司 | Exhaust gas treatment unit and coating machine exhaust gas treatment system using same |
| CN114798369B (en) * | 2022-04-21 | 2024-06-04 | 苏州兆和环能科技有限公司 | Coating machine oven and coating machine waste gas recovery system |
-
2022
- 2022-04-21 CN CN202210425773.9A patent/CN114798369B/en active Active
-
2023
- 2023-03-28 WO PCT/CN2023/084414 patent/WO2023202332A1/en unknown
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102198337A (en) * | 2010-03-22 | 2011-09-28 | 杨峥雄 | Environment-friendly energy-saving exhaust gas treatment device and method |
| CN103223398A (en) * | 2013-04-21 | 2013-07-31 | 杨峥雄 | Vertical type gluing machine drying box and energy-saving method thereof |
| CN108773175A (en) * | 2018-06-15 | 2018-11-09 | 江阴市旭高机械有限公司 | Energy conservation and environmental protection heated oven |
| CN210337223U (en) * | 2019-05-06 | 2020-04-17 | 上海界龙永发包装印刷有限公司 | Heating device of gravure printing machine |
| CN210113265U (en) * | 2019-05-21 | 2020-02-25 | 浙江威治环保科技有限公司 | Sludge drying device |
| CN110698037A (en) * | 2019-11-15 | 2020-01-17 | 江苏博一环保科技有限公司 | Air-out drainage type sludge drying system based on heat pump technology |
| CN111544920A (en) * | 2020-05-19 | 2020-08-18 | 东莞欧赛莱机电科技有限公司 | NMP recovery system and lithium battery coating system |
| CN212227549U (en) * | 2020-06-09 | 2020-12-25 | 上海澈慧环保科技有限公司 | Device for condensation, dehumidification, drying and condensate recovery after evaporation |
| WO2022068970A1 (en) * | 2020-10-16 | 2022-04-07 | 青岛海尔空调器有限总公司 | Drying system and laundry treatment apparatus comprising same |
| CN216049027U (en) * | 2021-09-09 | 2022-03-15 | 四川砥弘科技有限公司 | Integrated heat pump with heat recovery and dehumidification functions and drying device applied to integrated heat pump |
| CN113842746A (en) * | 2021-09-17 | 2021-12-28 | 苏州兆和通风设备制造有限公司 | Organic gas recovery modular assembly and coating machine waste gas treatment system |
| CN114146879A (en) * | 2021-10-12 | 2022-03-08 | 苏州兆和环能科技有限公司 | Production equipment heat recovery humidity control module and heat recovery humidity control system applying same |
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| Publication number | Publication date |
|---|---|
| WO2023202332A1 (en) | 2023-10-26 |
| CN114798369A (en) | 2022-07-29 |
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