BORSIG Organic Solvent Nanofiltration unit

In bulk chemistry huge amounts of solvents with high purity requirements are produced. Purifying such a solvent from a small amount of higher molecular weighted impurities by rectification is an energy-intensive and sometimes even not economic process. OSN enable to produce a highly purified solvent by retaining the impurities

Homogeneous catalysts are high value raw materials. Their recovery from reaction mixtures is quite complex and often goes along with catalyst deactivation and material losses. OSN provides a non-thermal tool for recovery of the active catalyst complex.

OSN allows for concentration of crystalline mother liquors and simultaneous recovery of the solvent. No phase change such as evaporation or condensation is required. The solvent is recovered in the liquid phase. Energy savings and improved solvent management are the benefits.

Extraction processes require high amounts of solvents which have to be removed afterwards by evaporation processes. OSN membranes offer an attractive and economic alternative for solvent recovery e.g. from hexane-oil-miscella, without undergoing a phase change.

Fragrances derived from natural oils are used in the food and cosmetic industry.

For some products there are high sensory and optic requirements. OSN membranes enable the removal of colour molecules, which can cause undesired colouring of the end-product.