1. To remove oligomers, wash the tank with NaOH or acidic sulfite detergent. 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). The gloss of the chrome plating layer disappears completely. The overflow dyeing machine is very corrosive. 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 cleaning effect.
3. Removal of agglomerated dyes, tars and greases, where there is an overflow dyeing machine, can be reduced and cleaned using traditional vat preservation technology with sulphuric acid powder, liquid caustic soda, emulsifier, etc.
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