Learning Points│How to Remove Cylinder from Printing and Dyeing Processes [Dyeing Factory Experience]

In life, we will encounter a variety of scales that affect our lives. In the process of printing and dyeing, we will encounter more different components and different types of cylinder scale, which will seriously affect product quality and even affect the safety of production.

The main component of inorganic salt scale is carbonate of calcium and magnesium ions

Hazard: a. Affect heat exchange and reduce heat utilization.

b. Make the boiler unevenly heated, causing the boiler to be damaged or even explode.

c. Form a hard block in the cylinder to scratch the fabric and sew the yarn.

The main ingredients are polyester oligomers and polyacrylates.

Hazard: The oligomers, slurries, and dyes collect in the jar, causing a color and color point on the surface of the fabric.

Acid cleaning method: a. Selecting organic acid as the scale remover can remove the dirt and clean the equipment, which will cause little damage to the equipment.

b. Descaling conditions: Temperature is about 110°C, 50-120min.

a. Selecting fatty alcohol ethers as scale remover. The scale remover has good solubilizing, emulsifying and carrying capacity, and can disperse and emulsify oligomers and slurries to achieve descaling purposes.

b. Descaling conditions: temperature 120 °C, 50-120min.

Pre-treatment, dyeing adding chelating dispersant, can be combined with calcium and magnesium ions to prevent the production of inorganic salt cylinder scale, but also can be dispersed, emulsified oligomers, slurries, to prevent the generation of such cylinder scale.