Since the development of the stereotypes machine industry, both the number of products, the number of enterprises, the production and sales volume and the market holdings have been growing rapidly and have undergone dizzying changes. The production process of the printing and dyeing industry is complex. In order to improve the appearance, surface characteristics and dyeing quality of the product, it is necessary to add a variety of textile auxiliaries and solvents. After dyeing and rinsing, textiles need to go through a heat setting process. Using the characteristics of thermoplasticity of the fabric, drying, tentering and heat treatment are carried out in the setting machine to achieve the purpose of setting. The exhaust gas of the dyeing and setting machine contains water vapor, volatiles and condensates of printing and dyeing auxiliaries and solvents, as well as fibers and dust carried by the fabric. It is a mixed fluid containing gas, liquid and solid pollutants. The specific gravity of the exhaust gas of the setting machine is slightly heavier than that of the clean air, and it has the characteristics of high temperature, high humidity, grease and complex composition.
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