How to clean the high temperature and high pressure overflow dyeing machine?
Feb 13, 2022
Long-term use of high-temperature and high-pressure dyeing machines will deposit dirt on the inner wall of the cylinder. Especially in the context of the printing and dyeing industry generally attaching importance to the control of sewage discharge, many printing and dyeing factories have caused dyes, oligomers, grease, and fiber debris in order to save water. A large amount of other substances are deposited on the bottom of the tank. The consequence is that the dyeing vat will rise and cool down slightly, and there will be flying spots during dyeing. In severe cases, the dyeing equipment will be blocked and the dyeing temperature will not rise. Depending on the purpose of the overflow tank, the main components of the sediment in the tank are also different, mainly dust, grease, agglomerated dyes, dispersants, oligomers, calcium salts, etc., and different methods are used to clean them according to different ingredients.
1. To remove oligomers, often use NaOH or acid sulfite detergent to wash the tank. You can also add a carrier to help dissolve the oligomers. Adding a high-temperature resistant dispersant can inhibit the precipitation of oligomers. Rapid cooling and high temperature drainage can prevent the deposition and aggregation of oligomers.
2. The removal of alkali scale, calcium salt and fiber debris can be cleaned with hydrochloric acid or sulfuric acid. The effect is very good, but it has a significant impact on stainless steel (corrosion-resistant stainless steel is generally used on the inner wall of the dyeing tank). big. It is recommended to use Transchem's TF-105F cylinder cleaning agent, which does not contain strong acid, is not corrosive to the cylinder body, and has an excellent cylinder cleaning effect.
3. Removal of agglomerated dyes, tars, and greases can be reduced and cleaned by traditional vat preservation technology with sulphuric acid powder, liquid caustic soda, emulsifiers, etc.
In addition, when cleaning the dyeing vat, you must add an appropriate amount of waste cloth to the vat to ensure that the high-speed water sprayed from the nozzle is washed through the waste cloth to the "dead corner" that is difficult to reach in normal circulation.