PCI MEMBRANES

Dyestuff Processing With Membrane Filtration

Membrane technology is becoming widely accepted in the dyestuffs industry, in particular for reactive, acid and direct dyes, as a way of producing high quality products, maximising yields and capacity, and saving raw materials.

Membrane technology is becoming widely accepted in the dyestuffs industry, in particular for reactive, acid and direct dyes, as a way of producing high quality products, maximising yields and capacity, and saving raw materials.Nanofiltration membranes are used for two purposes; desalting and concentration. Desalting is the process that removes salts in the manufacture of both powder and liquid dyestuffs. The dye, retained by the membrane, is desalted and concentrated, increasing its strength by reducing the inorganics content.

Plant capacity can be increased using nanofiltration prior to drying in the production of powder dyes. In the manufacture of liquid dyes the solubility of the dye is enhanced by almost complete desalting which helps to improve the stability of the product.

Benefits of Nanofiltration

PCI Membranes nanofiltration membranes are used to effectively remove both monovalent and divalent salts. Diafiltration water is normally used to allow a high level of desalting to be achieved.

PCI Membranes works closely and confidentially with its customers to optimise the process to achieve an acceptable balance between the quantity of diafiltration water used for a certain level of desalting against the dye passage through the membrane.

PCI Membranes has installed over 4000m2 of membranes in dye production plants across Europe, Asia and the Americas.



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