CN114798369A - Coating machine drying oven and coating machine waste gas recovery system - Google Patents
Coating machine drying oven and coating machine waste gas recovery system Download PDFInfo
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- CN114798369A CN114798369A CN202210425773.9A CN202210425773A CN114798369A CN 114798369 A CN114798369 A CN 114798369A CN 202210425773 A CN202210425773 A CN 202210425773A CN 114798369 A CN114798369 A CN 114798369A
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- 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
Abstract
The application provides a coating machine oven and coating machine waste gas recovery system, the coating machine oven includes first box and second box, it has the stoving region of drying to the target product to inject in the first box, the internal air feed recovery unit that is equipped with of second box, be provided with stoving air inlet and waste gas outlet on the first box, air feed recovery unit retrieves the air inlet and supplies the wind including the air feed and retrieves the gas outlet, waste gas outlet retrieves the air inlet with the air feed and is linked together, it retrieves the gas outlet with the air feed to dry the air inlet and is linked together. The application discloses coating machine oven has stoving and organic gas recovery function simultaneously, has realized no tuber pipe ization, can reduce the construction period of tuber pipe construction and reduce equipment cost on the one hand, and on the other hand, every section oven can accurate control necessary circulation amount of wind, reduces because of the too big energy waste problem that causes of circulation amount of wind and required adjustment time when reducing equipment start, reduces the invalid running time of equipment, improves coating machine oven production efficiency.
Description
Technical Field
The application relates to the technical field of organic gas recovery, in particular to a coating machine drying oven and a coating machine waste gas recovery system.
Background
In the production process of the lithium battery, coating is a very important step, the device mainly used in the step is a coating machine, the oven is taken as the most important part of the coating machine and comprises a plurality of oven units, each oven unit is communicated with one another into a whole, the coated substrate moves forward in the oven in the same direction, is continuously baked and dried by high temperature in each oven unit in the advancing process, and the lithium battery pole piece is accompanied with the generation of high temperature N-methyl pyrrolidone (NMP) waste gas in the coating and drying process. 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 production of the lithium battery, and the standard emission is realized.
At present, a plurality of NMP recovery modes are provided in the coating process, and a traditional recovery mode is generally used as shown in figure 1, wherein a set of NMP recovery device is adopted to intensively treat N sections (usually 10-12 sections) of drying ovens on each coating machine production line. This approach has the following problems:
1. the concentration of NMP in each section of the oven cannot be accurately controlled;
2. in order to meet the requirement of maximum allowable concentration in the oven, the problems of excessive air exhaust and air supply and energy waste exist;
3. all the drying ovens are treated in a centralized manner, and the problems of wind resistance loss caused by overlarge wind pipes and long air supply distance exist;
4. the air quantity of each section of oven is adjusted complicatedly and the time consumption is overlong when the product is produced/replaced.
In view of the above problems, it is proposed to use one NMP recovery device for each oven or for every two ovens, as shown in fig. 2, but each NMP recovery device still needs to be connected to the oven through return air and supply air pipelines, although the above problems can be solved. The problems that the construction time is increased and the construction cost is increased due to the fact that the air duct is required to be constructed on site, and the problems that although the distance of the air duct is shortened, the air volume is reduced, the air supply and return resistance is greatly reduced, air return and air supply resistance loss exists and the like are caused.
In view of the above, it is desirable to provide 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 present application provides a novel windless tube-type coater oven, so as to achieve the technical effects of efficiently recovering organic gas and saving energy.
In order to achieve the above purpose, the technical solution adopted by the present application to solve the technical problem is:
in a first aspect, the application provides a coating machine oven, which comprises a first box body and a second box body, wherein a drying area for drying a target product is defined in the first box body, and an air supply recovery device is assembled in the second box body;
the air supply recovery device comprises an air supply recovery air inlet and an air supply recovery air outlet, the waste gas air outlet is communicated with the air supply recovery air inlet, and the drying air inlet is communicated with the air supply recovery air outlet.
In a specific embodiment, the air supply recovery device comprises an air supply assembly and a recovery assembly, the air supply 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 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 outlets include a first exhaust gas outlet and a second exhaust gas outlet, the first exhaust gas outlet is communicated with the recovery air inlet, the second exhaust 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.
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 outlets include 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 which are oppositely arranged, 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 waste gas outlet is arranged on the position of the first box body corresponding to the first drying area, and the second waste gas outlet is arranged on the position of the first box body corresponding to the second drying area.
In a specific embodiment, the drying air inlets include 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 particular embodiment, the volume of process air entering the recovery air inlet is less than the volume of process air entering the supply air inlet.
In a specific embodiment, the recycling assembly includes at least one heat exchanger, at least one condenser and at least one processing fan, wherein the heat exchanger, the condenser and the processing fan are connected in sequence to form an organic gas heat exchange-condensation recycling circulation flow path.
In a specific embodiment, the recovery assembly further comprises at least one demister disposed between the condenser and the treatment fan.
In a particular embodiment, the condenser comprises at least one of a cooling coil, a freezing coil, a heat pipe, a direct expansion coil.
In a particular 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 particular embodiment, said air supply means further comprise at least one filter
In a second aspect, the application further provides a system for recycling waste gas of a coating machine, the system comprises at least one layer of drying module, and each layer of drying module comprises a plurality of coating machine drying ovens.
The technical scheme provided by the embodiment of the application has the following beneficial effects:
the coating machine drying oven and the coating machine waste gas recovery system provided by the embodiment of the application comprise 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, an air supply recovery device is assembled in the second box body, a drying air inlet and a waste gas outlet are arranged on the first box body, the air supply recovery device comprises an air supply recovery air inlet and an air supply recovery air outlet, the waste 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 through coupling a recovery component of organic gases such as NMP (N-methyl pyrrolidone) in each coating machine drying oven, the coating machine drying oven has the functions of drying and organic gas recovery, so that the coating machine drying oven without air duct is realized, on one hand, the problem of long construction period caused by air duct construction can be reduced, and the equipment cost can be reduced, on the other hand, each section of the drying oven can accurately control the necessary circulating air volume, so that the problem of energy waste caused by overlarge air volume is solved, each section of the drying oven can independently and automatically and accurately adjust the air volume, the adjustment time required when the equipment is started is shortened, the invalid running time of the equipment is shortened, and the production cost is reduced;
further, according to the coater oven and the coater waste gas recovery system provided by the embodiment of the application, since the gas entering the recovery assembly is the gas with higher concentration of NMP 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 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 assembly in the process of recovering waste gases such as organic gas and the like and the usage amount of heat conduction oil for subsequent heating can be reduced, and therefore, the energy consumption is reduced, the operation cost is saved, the manufacturing cost of a lithium battery is reduced, and the carbon emission is reduced;
further, the coating machine oven and the coating machine waste gas recovery system that this application embodiment provided set up the condenser and adopt the straight coil pipe that expands to when guaranteeing that the leakage appears in the coil pipe, can not have the cooling water to flow into in the coating machine oven, cause the secondary harm.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of NMP recovery in a coating and drying exhaust treatment system of the prior art;
FIG. 2 is a schematic diagram of NMP recovery from another prior art coating drying exhaust treatment system;
fig. 3 is a schematic view of a coater oven provided in an embodiment of the present application;
FIG. 4 is a schematic diagram of a coater oven provided in the second embodiment of the present application;
fig. 5 is a schematic diagram of a coater oven provided in the third embodiment of the present application.
Detailed Description
In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The following describes a scheme of an embodiment of the present application in detail with reference to the drawings.
The coater oven in the present application includes, but is not limited to, a coater cathode oven, and the exhaust gas to be recycled includes, but is not limited to, organic gas such as NMP. For convenience of description, the coater oven in each preferred embodiment is described by taking a coater cathode oven as an example, and NMP as an example for exhaust gas, but it should be understood that the coater oven described in this application should not be limited to a coater electrode oven, and all production devices that require air supply and exhaust for generating organic gas in production, such as lithium battery coating ovens, printing, semiconductors, adhesive tape manufacturing, etc., can use the solution of this application, the coater cathode oven should not be construed as limiting the coater oven in this application, and NMP should not be construed as limiting the exhaust gas in this application, and other coating-related organic gases, such as toluene, N-Dimethylacetamide (DMAC), N-Dimethylformamide (DMF), can also be recycled by using the coater oven of this invention.
As described in the background art, the conventional coating machine oven generally only has a drying function, the recycling treatment of organic gases such as NMP and the like is usually realized by an external air pipe recycling device, and a large number of ventilation pipelines need to be connected outside the oven in such a setting mode, and the ventilation pipelines need to be constructed on site, which causes a series of problems such as increase of construction time, increase of construction cost, large air return and large air supply wind resistance. In view of one or more of the above problems, the present application provides a novel coater oven, which realizes an airless coater oven by integrally disposing an air supply assembly and a recovery assembly inside the oven.
Example one
Fig. 3 is a schematic view of a coater oven provided in an embodiment of the present disclosure, and referring to fig. 3, the coater oven generally includes a first tank 100, a second tank 200, and an air supply recovery device 300. Wherein, the air supply recovery device 300 is integrally disposed inside the second case 200. The first casing 100 defines a drying area 110 therein, and the drying area 110 is used for allowing the target product coated with the slurry to pass through, so as to dry the target product coated with the slurry and recover organic gases such as NMP generated in the drying process with the cooperation of the air supply recovery device 300. The first box 100 is provided with a drying air inlet 120 and an exhaust air outlet 130, and as a preferred example, the drying air inlet 120 and the exhaust air outlet 130 may be respectively opened on two opposite side walls of the first box 100 to form an air supply and exhaust loop. As an illustrative and non-limiting example, the target product in the present application includes, but is not limited to, a cathode sheet, and for convenience of description, the target product is the cathode sheet.
As further shown with reference to fig. 3, the supply air recovery device 300 includes a supply air 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 region 110 in the first box 100 to dry the cathode sheet 400 (i.e., the target product) coated with the slurry. The recycling assembly 320 is mainly used for recycling organic gases such as NMP generated in the process of drying the cathode plate coated with the slurry in the first box 100. In specific implementation, the air supply assembly 310 is provided with at least one air supply inlet 311 and at least one air supply outlet 312, and the recovery assembly 320 is provided with at least one recovery inlet 321 and at least one recovery outlet 322.
Generally, products such as the cathode plate 400 need only be coated with the slurry on one side and need not be coated on the other side. The cathode plate 400 includes a first surface 410 and a second surface 420, the first surface 410 and the second surface 420 are disposed opposite to each other, the first surface 410 needs to be coated with a slurry, and the second surface 420 does not need to be coated with a slurry. Therefore, in 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 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 therefore, when the recovery process of the organic gas such as NMP is performed, the recovery process of the gas in the region corresponding to the first surface 410 can be performed preferentially.
The gas entering the recovery assembly 320 is the gas with higher concentration of organic gases such as NMP, so that the processing air volume entering the recovery air inlet 321 of the recovery assembly 320 can be set to be smaller than the processing air volume entering the air supply air inlet 311 of the air supply assembly 310, the use amount of cooling water and chilled water required by the recovery assembly in the process of recovering the organic gases and the use amount of heat conduction oil for subsequent heating are reduced, the energy consumption is reduced, the operation cost is saved, the manufacturing cost of the lithium battery is reduced, and the carbon emission is reduced.
In specific implementation, as a preferred embodiment, drying area 110 in the present application may be divided into a first drying area 111 and a second drying area 112. Wherein first drying zone 111 corresponds to first surface 410 and second drying zone 112 corresponds to second surface 420. Correspondingly, the exhaust gas outlet 130 provided at the first casing 100 may include a first exhaust gas outlet 131 and a second exhaust gas outlet 132. First exhaust air outlet 131 is disposed at a position of first casing 100 corresponding to first drying region 111 to communicate with first drying region 111, and second exhaust air outlet 132 is disposed at a position of first casing 100 corresponding to second drying region 112 to communicate with second drying region 112.
Since the drying region 110 includes two portions, namely, the first drying region 111 and the second drying region 112, in order to improve the drying effect of the coater oven, the drying air inlet 120 includes a first drying air inlet 121 corresponding to the first drying region 111 and a second drying air inlet 122 corresponding to the second drying region 112, that is, the first drying air inlet 121 is disposed at a position of the first box 100 corresponding to the first drying region 111 to communicate with the first drying region 111, and the second drying air inlet 122 is disposed at a position of the first box 100 corresponding to the second drying region 112 to communicate with the second drying region 112. A first air supply and exhaust loop is formed in the first drying region 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 region 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 loop and the second air supply and exhaust loop are not two separate closed spaces in space, a part of air flowing in from the first drying air inlet 121 can flow out from the second exhaust air outlet 132, and a part of air flowing in from the second drying air inlet 122 can also flow out from the first exhaust air outlet 131, where the first air supply and exhaust loop and the second air supply and exhaust loop merely represent the positional relationship therebetween, and should not be understood as a limitation on the protection scope.
As a preferred embodiment, and with further reference to fig. 3, in the present example, the recovery assembly 320 includes a heat exchanger 323, a condenser 324, a process fan 325, and a demister 326. The heat exchanger 323, the condenser 324, the demister 326 and the treatment fan 325 are connected in sequence to form an organic gas heat exchange-condensation recovery circulation flow path, and the amount of air 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 a recovery gas inlet 321 of the recovery assembly 320, and is connected with the first waste gas outlet 131 on the first tank 100, the low-temperature gas outlet is communicated with the inlet of the condenser 324, the outlet of the condenser 324 is communicated with the inlet of the demister 326, the outlet of the demister 326 is communicated with the inlet of the processing fan 325, the outlet of the processing fan 325 is communicated with the low-temperature gas inlet, and the high-temperature gas outlet is a recovery gas outlet 322 of the recovery assembly 320, and is connected with the air supply gas inlet 311.
In the waste gas treatment process, high-temperature waste gas generated in the first drying region 111 enters a high-temperature gas inlet of the heat exchanger 323 from the first waste gas outlet 131, then exchanges heat with low-temperature waste gas flowing in from a low-temperature gas inlet of the heat exchanger 323, low-temperature waste gas converted from the high-temperature waste gas after heat exchange enters an inlet of the condenser 324 from a low-temperature gas outlet of the heat exchanger 323, NMP is condensed and recovered in the condenser 324, the low-temperature gas recovered by condensation flows into an inlet of the demister 326 from an outlet of the condenser 324, liquid such as condensate carried in the gas is removed by the demister 326, enters a treatment fan 325 from an outlet of the demister 326, enters a low-temperature gas inlet of the heat exchanger 323, is converted into high-temperature gas after heat exchange with the high-temperature gas in the heat exchanger 323, enters the air supply inlet 311 from the high-temperature gas outlet, and enters the first box 100 again after being heated by the air supply assembly 310, thereby forming an organic gas heat exchange-condensation recovery circulation flow path.
It should be noted that, in the embodiment of the present application, specific components included in the recovery assembly 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 also does not limit 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 320 in the present example includes 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 which 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 the heat exchangers in the present application are only preferred examples, and any other conventional heat exchanger in the prior art, such as shell-and-tube heat exchanger, double tube plate heat exchanger, ceramic heat exchanger, regenerative heat exchanger, etc., should be included in the scope of protection of the present application.
The condenser in the embodiment of the present application is preferably a combination of both cooling coil 324a and freezing coil 324 b. It should be understood here that this embodiment is only a preferred example, and a person skilled in the art can select at least one of the cooling coil, the freezing coil, the heat pipe, and the direct expansion coil as the 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 present 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 the drying oven of the coating machine, and secondary damage is caused.
As a preferred embodiment, in the present embodiment, the recycling assembly 320 may further include a pressure regulating device 327, and the pressure regulating device 327 is disposed between the processing fan 325 and the heat exchanger 323 to maintain the negative pressure exhaust.
In the air supply assembly 310 in the embodiment of the present application, the air supply assembly 310 includes a circulating fan 313, a heater 314, and a filter 315, where the circulating fan 313, the heater 314, and the filter 315 are connected in sequence, an inlet of the circulating fan 313 is an air supply inlet 311 of the air supply assembly 310, and an outlet of the filter 315 is an air supply outlet 312 of the air supply assembly 310. The circulation fan 313 can realize accurate control of the amount of air entering 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 specific number of the circulating fan 313, the heater 314, and the filter 315 is not limited in the embodiment of the present application, and a user may set the number according to actual needs.
Referring to fig. 3, in the embodiment of the present invention, an inlet of the circulation fan 313 is communicated with the second exhaust gas outlet 132 and the high temperature gas outlet of the heat exchanger 323, an outlet of the circulation fan 313 is communicated with an inlet of the heater 314, an outlet of the heater 314 is communicated with an inlet of the filter 315, and an outlet of the filter 315 is communicated with the first drying inlet 121 and the second drying 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, are sent to the inlet of the heater 314 through the circulating fan 313, are heated by the heater 314 and then enter the inlet of the filter 315 from the outlet of the heater 314, and after impurities such as dust and the like carried in the gas are filtered by the filter 315, enter the first drying air inlet 121 and the second drying air inlet 122 through the outlet of the filter 315, and then enter the first drying area 111 and the second drying area 112, so that an air supply and exhaust loop is formed 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.
As further shown in fig. 4, a part of the high-temperature exhaust gas generated in the first drying region 111 enters the high-temperature gas inlet of the heat exchanger 323 from the first exhaust gas outlet 131, and is subjected to organic gas recycling treatment through the organic gas heat exchange-condensation recycling circulation flow path formed by the heat exchanger 323, the condenser 324, the demister 326 and the treatment fan 325, and another part of the high-temperature exhaust gas generated in the first drying region 111 enters the circulation fan 313 from the first exhaust gas outlet 131 together with the high-temperature exhaust gas generated in the second drying region 112 and the high-temperature gas after heat exchange from the heat exchanger 320, and enters the first drying region 111 and the second drying region 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 region 111 and the second drying region 112, respectively. The specific exhaust gas treatment process and the air supply process can refer to the related contents in the first embodiment, and are not described in detail here.
EXAMPLE III
The third embodiment is a third preferred embodiment in the industry, and is different from the first embodiment in that, referring to fig. 5, the first waste gas outlet 131 is communicated with the inlet of the circulating fan 313, and the outlet of the circulating fan 313 is communicated with the high-temperature gas inlet of the heat exchanger 323, that is, the first waste gas outlet 131, the second waste gas outlet 132 and the recovery gas outlet 322 are communicated with 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 provided downstream of the circulation fan 313, and the circulation fan 313 can be 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 circulator 313 in this embodiment is merely a preferred example, and those skilled in the art can arrange the circulator 313 at any suitable position in the air supply assembly 310 according to actual needs, for example: the recycle blower 313 is disposed between the heater 314 and the filter 315, and returns part of the return air of the first exhaust gas outlet 131, the second exhaust gas outlet 132, and the recovery outlet 322 directly to the high-temperature gas inlet of the heat exchanger 323.
As further shown in fig. 5, the high-temperature exhaust gas generated in the first drying region 111, the high-temperature exhaust gas generated in the second drying region 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 exhaust gas enters the inlet of the heat exchanger 320 through the outlet of the circulation fan 313, the organic gas is subjected to 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 for the organic gas recovery treatment, and the other part of the high-temperature exhaust gas enters the inlet of the heater 314 through the outlet of the circulation fan 313, is treated by the heater 314 and the filter 315 and then enters the first drying region 111 and the second drying region 112, so as to form an air supply and exhaust loop in the first drying region 111 and the second drying region 112, respectively. The specific exhaust gas treatment process and the air supply process can refer to the related contents in the first embodiment, and are not described in detail here.
The application also provides a coater waste gas recovery system corresponding to the coater oven, and the system comprises at least one layer of drying module, wherein each layer of drying module comprises a plurality of coater ovens.
In the description of the present application, it is to be understood that the terms "vertical," "parallel," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (15)
1. The coating machine drying 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 assembled in the second box body;
the air supply recovery device comprises an air supply recovery air inlet and an air supply recovery air outlet, the waste gas air outlet is communicated with the air supply recovery air inlet, and the drying air inlet is communicated with the air supply recovery air outlet.
2. The coater oven of claim 1 wherein the air supply recovery device comprises an air supply assembly and a recovery assembly, the air supply recovery air inlet comprising an air supply air inlet of the air supply assembly and a recovery air inlet of the recovery assembly, and the air supply recovery air outlet comprising an air supply air outlet of the air supply assembly and a recovery air outlet of the recovery assembly.
3. The coater oven of claim 2, wherein the exhaust gas outlets comprise a first exhaust gas outlet and a second exhaust gas outlet, the first exhaust gas outlet being in communication with the recovery air inlet, the second exhaust gas outlet and the recovery air outlet being in communication with the air supply air inlet, and the air supply air outlet being in communication with the drying air inlet.
4. The coater oven of claim 2, wherein the exhaust gas outlets comprise 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.
5. The coater oven of claim 2, wherein the exhaust gas outlets comprise 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 in communication with the air supply inlet, the first exhaust gas outlet, the second exhaust gas outlet, and the recovery gas outlet are all in communication with the recovery air inlet, and the air supply outlet is in communication with the drying air inlet.
6. The coater oven of any one of claims 3 to 5, wherein the target product includes a first surface and a second surface which are oppositely disposed, the first surface is coated with the slurry to be dried, the drying region includes a first drying region and a second drying region, the first surface corresponds to the first drying region, the second surface corresponds to the second drying region, the first exhaust gas outlet is disposed at a position of the first box corresponding to the first drying region, and the second exhaust gas outlet is disposed at a position of the first box corresponding to the second drying region.
7. The coater oven of claim 6, wherein the drying air inlets include 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.
8. The coater oven of claim 6 wherein the amount of processing air entering the recovery air inlet is less than the amount of processing air entering the supply air inlet.
9. Coater oven according to any of the claims 2-5, wherein the recycling assembly comprises at least one heat exchanger, at least one condenser and at least one process fan, wherein the heat exchanger, the condenser and the process fan are connected in sequence to form an organic gas heat exchange-condensation recycling circulation flow path.
10. The coater oven of claim 9 wherein the recovery assembly further includes at least one demister disposed between the condenser and the process fan.
11. The coater oven of claim 9, wherein the heat exchanger comprises at least one of a corrugated plate gas-gas exchanger or a heat pipe heat exchanger.
12. Coater oven according to claim 9, wherein the condenser comprises one or a combination of cooling coils, freezing coils, heat pipes, direct expansion coils.
13. Coater oven according to any of the claims 2-5, wherein the air supply assembly comprises at least one circulation fan and at least one heater connected in series.
14. The coater oven of claim 13 wherein the air supply assembly further comprises at least one filter.
15. A coater exhaust gas recovery system comprising at least one layer of drying modules, each layer of drying modules comprising a plurality of coater ovens according to any one of claims 1 to 14.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210425773.9A CN114798369A (en) | 2022-04-21 | 2022-04-21 | Coating machine drying 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 CN114798369A (en) | 2022-04-21 | 2022-04-21 | Coating machine drying oven and coating machine waste gas recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114798369A true CN114798369A (en) | 2022-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210425773.9A Pending CN114798369A (en) | 2022-04-21 | 2022-04-21 | Coating machine drying oven and coating machine waste gas recovery system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114798369A (en) |
| WO (1) | WO2023202332A1 (en) |
Cited By (2)
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| CN116329049A (en) * | 2022-12-30 | 2023-06-27 | 三一技术装备有限公司 | Oven, coating equipment and lithium battery production system |
| WO2023202332A1 (en) * | 2022-04-21 | 2023-10-26 | 苏州兆和环能科技有限公司 | Drying oven for coating machine, and waste gas recovery system for coating machine |
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- 2022-04-21 CN CN202210425773.9A patent/CN114798369A/en active Pending
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2023202332A1 (en) | 2023-10-26 |
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