As we all know, the textile industry has played a huge role in promoting the economic development of various countries, but it is undeniable that the development of the textile industry has also seriously affected the surrounding environment of various countries. The production of various toxic and harmful gases in the textile industry has a great impact on people’s health. If reasonable measures are not taken in time, it will have an unimaginable impact on the surrounding environment.
Textile stenter smoke mainly comes from two aspects: one is the chemical fiber spinning process, and the other is the waste gas produced by textile pretreatment and functional finishing processes. Waste gas mainly includes: singeing machine waste gas and setting machine waste gas, etc. Heat setting machine treatment is an important part of the textile pretreatment process. During the thermoforming process, various dye additives and coating additives on the textile will be released or volatilized. , so a large amount of VOCs will eventually be released from the exhaust pipe mouth. These organic gases are mainly formaldehyde, polyphenols, aromatic hydrocarbons, etc.
In the functional finishing process of textiles, waste gas mainly comes from the hot-melt dyeing process of polyester disperse dyes. High temperature causes the volatilization of discoloration gases of some small molecule dyes. However, the easy-iron and flame-retardant finishing of cotton fabrics both go through the baking process. Due to the addition of Some chemical additives will release formaldehyde and ammonia during baking.
So how should the waste gas from textile printing and dyeing factories be treated to meet environmental emission standards and avoid complaints from nearby residents? Our company recommends the use of electrostatic equipment to purify exhaust gas.
Combination of washing method and electrostatic collection method
The principle of the washing method is: through full contact between the liquid and the oil fume gas, the oil fume components in the liquid enter the liquid phase, and ultimately achieve the purpose of oil and gas separation. This technology comes from dust removal technology.
The principle of the electrostatic collection method is: after the particles enter the electric field, the electric charge is brought to the particles, which is called charging, and then the particles are attracted to the oil collector by electrostatic attraction through the electrostatic field , thereby achieving the purpose of separating the particles from the smoke.