The waste gas generated by textile printing and dyeing factories mainly comes from two major aspects due to different processes: one is generated by the spinning process of chemical fibers, and the other is produced by the pre- or post-processing of textiles.
For example, the process used in the spinning of viscose fiber and chemical fiber is an example. First, the original materials need to be made into a spinning solution. In the process of making the spinning solution, carbon disulfide needs to be added, so during the spinning process, carbon disulfide will be released. A lot of harmful gases are emitted, which are mainly harmful gas substances with hydrogen sulfide, carbon disulfide and sulfur dioxide as the main components. In this article, the editor of Botonair will take you to understand which method is used to produce waste gas from printing and dyeing factories?
The main types of waste gas produced in printing and dyeing factory waste gas include: singeing machine waste gas, setting machine waste gas, and boiler waste gas, among which the waste gas generated by boilers is the focus. Heat setting machine treatment is an important part of the textile treatment process before heat setting.
During heat setting, many dye auxiliaries, coating auxiliaries and other substances on textiles will be released, so a large amount of VOCs (volatile organic compounds) will be released at the outlet of the exhaust pipe. The components of these organic gases mainly include formaldehyde, polyphenols, aromatic hydrocarbons and other organic gases.
During the functional finishing process of textiles, waste gas mainly comes from two links. In the hot-melt dyeing process of polyester disperse dyes, the high temperature causes some small-molecule dyes to sublime and emit waste gas. The easy-iron and flame-retardant finishing of cotton fabrics all go through the baking process. Due to the addition of some chemical additives, formaldehyde and other aldehyde gases and ammonia will be released during baking.
The other waste gas generated by printing and dyeing factories is mainly dust particles, and the pungent gas is caused by the volatilization of dyeing materials. Such as Yuanming powder, alkali, etc., if the ventilation effect is good, they will not cause much harm to the body.
How to specifically deal with the waste gas generated by printing and dyeing factories? Or if your company encounters problems in exhaust gas treatment, or if the exhaust gas treatment equipment installed by the machine cannot meet the emission requirements, you are welcome to get in touch with us.
Please feel free to contact with me: Lala +86 18675196188 sales@botonair.com