Coating machine drying oven and coating machine waste gas recovery system

A coating machine and oven technology, which is applied to the device for coating liquid on the surface, coating, surface pretreatment, etc., can solve the problems of complicated air volume adjustment, energy waste, and time-consuming in the saving oven, and reduce ineffectiveness. The effect of reducing the operating time, reducing the long construction period and reducing equipment costs

Pending Publication Date: 2022-07-29
SUZHOU ZHAOHE ENVIRONMENT & ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. The concentration of NMP in each oven cannot be precisely controlled;
[0005] 2. In order to meet the requirements of the maximum allowable concentration in the oven, there is a problem of excessive exhaust and supply air volume, resulting in energy waste;
[0006] 3. Centralized treatment of all ovens, there is a problem of wind resistance loss caused by excessive air ducts and long air supply distances;
[0007] 4. The air volume adjustment of each section of the oven is complicated and time-consuming when starting production / replacing products
[0008] In view of the problems existing in the above-mentioned recovery methods, although it is currently proposed to use an NMP recovery device corresponding to each oven or every two ovens, such as figure 2 As shown, although this setting can solve some of the above problems, each NMP recovery device still needs to be connected to the oven through the return air and supply air pipelines
This brings about the need for on-site construction of the air duct, resulting in increased construction time and increased construction costs. Although the distance of the air duct is shortened, the air volume is reduced, and the resistance of the air supply and return air will be greatly reduced, there are still problems. Wind, air supply wind resistance loss and other issues

Method used

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  • Coating machine drying oven and coating machine waste gas recovery system
  • Coating machine drying oven and coating machine waste gas recovery system
  • Coating machine drying oven and coating machine waste gas recovery system

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Experimental program
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Effect test

Embodiment 1

[0043] image 3 It is a schematic diagram of the principle of the coating machine oven provided in the first embodiment of the present application, refer to image 3 As shown, the coating machine oven generally includes a first box body 100 , a second box body 200 and a supply air recovery device 300 . Wherein, the air supply recovery device 300 is integrated and disposed inside the second box body 200 . A drying area 110 is defined inside the first box body 100 , and the drying area 110 is used to allow the target product after coating the slurry to pass through, so as to realize the target product after coating the slurry with the cooperation of the air supply recovery device 300 Drying and recycling of organic gases such as NMP generated during the drying process. The first box body 100 is provided with a drying air inlet 120 and an exhaust gas outlet 130. As a preferred example, the drying air inlet 120 and the exhaust gas outlet 130 can be respectively opened on the opp...

Embodiment 2

[0059] The second embodiment is another preferred embodiment in the industry, and the difference from the first embodiment is that refer to Figure 4 As shown, the first exhaust gas outlet 131 is in communication with the high temperature gas inlet of the heat exchanger 323 and the inlet of the circulating fan 313 .

[0060] Further reference Figure 4 As shown, 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, and passes through the heat exchanger 323, the condenser 324, the mist eliminator 326 and the processing fan 325. The formed organic gas heat exchange-condensation recovery circulation flow path is processed for organic gas recovery, and another part of the high-temperature exhaust gas generated in the first drying area 111 is generated from the first exhaust gas outlet 131 and the high-temperature exhaust gas generated in the second dry...

Embodiment 3

[0062] The third embodiment is the third preferred embodiment in the industry, and the difference from the first embodiment is that refer to Figure 5 As shown, the first exhaust 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 exhaust gas outlet 131, the second exhaust gas outlet 132 and the recovery outlet The air ports 322 are all communicated with the recovery air 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 component 320 . Disposing the return air returning to the high temperature gas inlet of the heat exchanger 323 downstream of the circulation fan 313 can prevent the circulation fan 313 from interfering with the inlet of the treatment fan 325 in the recovery assembly 320 . However, it should be u...

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Abstract

The invention provides a coating machine oven and a coating machine waste gas recovery system.The coating machine oven comprises a first oven body and a second oven body, a drying area for drying a target product is defined in the first oven body, an air supply recovery device is assembled in the second oven body, a drying air inlet and a waste gas outlet are formed in the first oven body, and the drying air inlet is communicated with the waste gas outlet. 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, and the drying air inlet is communicated with the air supply recovery air outlet. The coating machine drying oven has the drying function and the organic gas recycling function at the same time, no air pipe is achieved, on one hand, the construction period of air pipe construction can be shortened, the equipment cost can be reduced, on the other hand, necessary circulating air volume can be accurately controlled through each section of drying oven, and the drying efficiency is improved. And the problem of energy waste caused by overlarge circulating air volume is reduced, the adjustment time required for starting the equipment is shortened, the invalid running time of the equipment is shortened, and the production efficiency of the coating machine drying oven is improved.

Description

technical field [0001] The present application relates to the technical field of organic gas recovery, and in particular, to a coating machine oven and a coating machine waste gas recovery system. Background technique [0002] In the lithium battery production process, coating is a very important step. The main equipment used in this step is the coating machine, and the oven, as the most important part of the coating machine, includes multiple oven units. Connected and integrated, the coated substrate advances in the same direction in the oven, and is continuously baked and dried at high temperature in each oven unit during the advancing process, while the lithium battery pole piece is in the process of coating and drying , it will be accompanied by the generation of high temperature N-methylpyrrolidone (NMP) waste gas. NMP has problems such as high cost, endangering human health, and affecting production safety. If it is directly discharged, it will not only pollute the en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D3/02
CPCB05D3/0254
Inventor 汪龙明姚伟德陈玉龙金伟力
Owner SUZHOU ZHAOHE ENVIRONMENT & ENERGY TECH CO LTD
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