When the engraving machine and processing equipment are working, a certain amount of dust and waste gas will be emitted. The main components of the waste gas are soot, volatile benzene and benzene series, non methane total hydrocarbons and other organic waste gases, which have a certain impact on the surrounding environment. In order to protect the interests of employees, it is necessary to improve the working environment and the surrounding environment.
1、 Pollutants and their hazards
Main pollutants: soot and volatile organic waste gas.
Forming and hazardous pollutants:
(1) Smoke and dust: in the process of engraving machine equipment processing, the atomized dust particles formed by the dust generated by raw materials such as wood, leather, leather, PVC and so on at high temperature are sticky, easy to be adsorbed by people or objects in contact, and are also potential carcinogens, polluting the entire atmospheric environment.
(2) Volatile organic waste gas: wood, leather, leather, PVC and other raw materials volatilize during the high-temperature processing of the carving machine, forming organic waste gas. They are colorless and very irritating. They diffuse in the atmosphere with the flow of air. They can breathe directly through the human body or affect the human body.
2、 Treatment process
At present, the treatment processes for the organic waste gas produced by the engraving machine mainly include: isolation method, combustion method, absorption method, condensation method, plasma low-temperature catalytic oxidation method and adsorption method.
Isolation method: in the process of exhaust gas emission, the treatment effect is achieved through special filter materials and mechanical isolation.
Advantages: high processing efficiency, no technical requirements, simple operation.
Disadvantages: organic matter cannot be effectively removed.
Combustion method: the organic waste gas is directly burned, and the high temperature heating method is adopted to achieve the purpose of purifying the waste gas.
Advantages: high purification efficiency, more than 95%.
Disadvantages: it is easy to produce NOx and other secondary pollution under high temperature, which requires a lot of heat energy and consumes a lot of energy.