Views: 8 Author: China xicheng Publish Time: 2021-04-27 Origin: China xicheng
The implementation plan for the treatment of waste gas from the processing technology of the injection molding production workshop The plastic machine forms organic gases during the entire healing process of the injection molding process. The main components of which are fine dust particles, non-methane total diameters, and other harmful substances. The organic waste gas has a peculiar smell and is slightly toxic, extremely detrimental to health.
The plastic machine forms organic gas during the entire heating process of injection molding, and its main components are fine dust particles, non-methane total diameters, and other harmful substances. The organic waste gas has a peculiar smell and is slightly toxic, extremely detrimental to health. Unorganized emissions of styrene, toluene, organic gases, etc., will cause severe pollution to the environment and significant Harm to health. Therefore, the organic waste gas from the processing lines of plastic products factories cannot be handled carelessly. At this stage, the processing technology selected in the treatment of waste gas from injection molding processing mainly includes the following categories:
Charcoal absorption is the most commonly used recycling process at this stage. Its basic principle is to use absorbent (granular activated carbon and activated carbon fiber) porous materials to capture organic waste gas in organic waste gas. According to the activated carbon bed, the organic gas containing the organic waste gas is absorbed by the absorbent. The organic waste gas is purified and discharged into the atmosphere.
2. Photocatalytic reaction
The photocatalytic reaction process uses particular ultraviolet light waves to split the molecular structure of organic waste gas and cut off its molecular structure chain. According to the decomposition of water and oxygen in the air, it becomes ozone or free radicals with high activity. Furthermore, the molecular structure of organic waste gas is oxidized and converted into water and carbon dioxide. Adding a catalyst can increase the reaction rate and the efficiency of treating organic waste gas, thereby purifying waste gas.
The photocatalytic reaction process is a VOCs treatment method with a wide range of applications and a mature approach.
3. Plasma catalytic reaction
The plasma catalysis process has a wide range of applications and high purification treatment efficiency. It is especially suitable for multi-component malodorous gases that are difficult to treat by other methods, such as medical, medical, and other industries. But the one-time investment is enormous, and there are certain security risks.
The organic gas is excited by the plasma to dissociate the activity. The active organic waste gas undergoes high-energy radiation on the surface of the noble metal compound to produce a catalytic reaction chemical reaction with the oxygen in the organic waste gas. Finally, it converts into carbon dioxide and water, and other substances.
4. Incineration process
The incineration process includes high-temperature incineration and catalytic combustion. It is relatively mature and widely used in foreign countries. It is suitable for processing VOCs with high concentration and small air volume and requires high safety and airtightness of the entire process. When dealing with large air volume and low concentration VOCs, a relevant concentration process is necessary to pre-treat them.
The organic waste gas from the injection molding process contains many harmful components, such as acrylonitrile, non-methane total diameter, ethylene recording, etc. If it is not treated in time and effectively, it will cause a massive threat to the health of the staff in the production workshop. Also, Harm to the environment.