Recovery Mechanism
Chemical recovery processes in textile finishing plants continuously extract dissolved organic impurities from alkaline mercerizing solutions. Through continuous lye purification, mills reclaim sodium hydroxide for reuse in yarn treatment without stopping production. This closed-loop recycling reduces fresh chemical consumption and lowers effluent treatment costs.
Process Efficiency
Intermittent batch treatment systems often cause undesirable variations in the concentration of the recovered alkaline bath. By contrast, continuous lye purification maintains a steady state of chemical composition and temperature throughout the treatment cycle. Constant bath characteristics lead to highly uniform processing of cellulose fibers.
Contaminant Removal
Dextrans and hemicelluloses dissolved during mercerization must be kept below threshold levels to avoid affecting the viscosity of the process bath. Standard operations employing continuous lye purification extract these polymeric contaminants before they can recrystallize or deposit back onto the processed yarn. The continuous extraction avoids the gradual build-up of organic residues that interferes with subsequent dyeing stages.
This system operates via membrane or centrifugal mechanisms to handle high flow rates.
Yarn Quality
Consistent concentration of sodium hydroxide guarantees even swelling of cotton fibers across different production lots. Implementation of continuous lye purification prevents the patchy dye absorption that occurs when hemicellulose residues remain in the mercerizing bath. Treated fibers show superior luster and higher tensile strength.
