The low-concentration exhaust gas from the rear oven is sent to the fresh air inlet of the front oven as fresh air, and is generally not passed into the first 2-3 high-concentration ovens. This method can reduce the exhaust volume of the coating machine.
The low-concentration exhaust gas from the coating head/glue preparation room is sent into the fresh air inlet of the oven by a fan and used as fresh air for the oven (generally not passed into the high-concentration ovens in the first two sections). This method can reduce the exhaust volume of the coating head and glue preparation room, and avoid the low-concentration exhaust gas from entering the RTO to dilute the total concentration.
For example, a coating machine has 8 ovens, the total exhaust volume of the ovens is 10,000 m3/h, and the average temperature of the ovens is 140°C (the average temperature of the high and low temperature zones of the 8 ovens). Then the energy consumption of the oven of a coating machine is
| Coating product classification | Oven length | Reference exhaust air volume | Exhaust air temperature |
| Advertising consumables | 24 m～40m | 9000m³/h～ 10000m³/h | 60℃～80℃ |
| Anodized aluminum (transfer paper) | 12 m～24m | 8000m³/h～ 10000m³/h | 60℃～70℃ |
| Reflective film, reflective material | 24 m～72m | 7000m³/h～ 10000m³/h | 70℃～80℃ |
| Solar backplane film | 20 m～32m | 8000m³/h～ 10000m³/h | 70℃～80℃ |
| Aluminum-plastic film | 24 m～32m | 9000m³/h～ 12000m³/h | 70℃～80℃ |
| Tape | 16 m～28m | 10000m³/h～ 12000m³/ | 60℃～80℃ |
| Release film | 20 m～36m | 9000m³/h～ 10000m³/h | 60℃～100℃ |
| Protective film | 24 m～36m | 9000m³/h～ 10000m³/h | 70℃～80℃ |
| Lithium battery separator | about 28m | about 35000m³/h | 40℃～60℃ |
| Photosensitive film | about 60m | about 50000m³/h | 70℃～80℃ |
| Substance | Molecular formula | Molecular weight | Lower explosion limit (%) | Density Kg/L | Heating value Kcal/kg | Safe concentration (25%LEL) |
| Ethyl acetate EAC | C4H8O2 | 88 | 2.2 | 895 | 6101 | 21.6 g/m³ |
| Toluene | C6H5CH3 | 92 | 1.2 | 870 | 10138 | 12.3 g/m³ |
| Butanone | CH3COCH2H5 | 72 | 1.7 | 810 | 8098 | 13.6 g/m³ |
| Propyl acetate | C5H10O2 | 102 | 2 | 888 | 6770 | 22.7 g/m³ |
| Xylene | C8H10 | 106 | 1.2 | 870 | 10295 | 14.2 g/m³ |
| Methanol | CH3OH | 32 | 6 | 792 | 5688 | 21.4 g/m³ |
| Acetone | CH3COCH3 | 58 | 2.5 | 785 | 7363 | 16.2 g/m³ |
| Cyclohexane | C6H12 | 84 | 1.1 | 947 | 10012 | 10.3 g/m³ |
| Cyclohexanone | C6H10O | 98 | 1.1 | 950 | 8584 | 12.0 g/m³ |
| Ethanol | C2H6O | 46 | 3.3 | 790 | 7098 | 16.9 g/m³ |
| Isopropanol | C3H8O | 60 | 2 | 786 | 7902 | 13.4 g/m³ |
| 120# solvent oil | Mixture of n-heptane, isoheptane, cycloheptane, etc. | 1.1 | 766 | 10695 | 8.8 g/m³ |
The concentration of organic gases in the air is usually expressed in g/m3. Taking ethyl acetate as an example
The main products are: diffusion film, prism film, micro-transparent film, solar film and other functional films.
The project is divided into two phases, the first phase is 40,000 air volume RTO, and the second phase is 50,000 air volume RTO.
| Production line | Product width (mm) | Production line speed (m/min) | Oven |
| T2、T3 | 1520 | 13 | 5节 |
| W3 | 1520 | 20 | 5节 |
| W4 | 1520 | 20 | 5节 |
| Production line | Product width (mm) | Production line speed (m/min) | Oven |
| T4 | 1520 | 13 | 5节 |
| T5 | 1520 | 13 | 5节 |
| W5 | 1520 | 13 | 12节 |
| W6 | 1520 | 13 | 12节 |
The main products are: transfer paper, transfer film, anodized aluminum, polyester film, window film, protective film, etc.
Main products: Wet-process lithium battery separato
Production equipment exhaust situation
Wet-process lithium battery separator coating line (Japan line)
Main products: Lithium battery aluminum plastic film
Production equipment exhaust situation
Project features:
· Front-end LEL real-time concentration detection to ensure safety
· Pipeline fire dampers to ensure safety
· Gas collection boxes for unified collection
· Emissions that meet standards