What is the alcohol freezing skid for continuous filtration? An innovation made possible by the adaptation of a fragrance-making process by the climate and electrical experts at Equans France. Let’s explain! To filter a fragrance, a manufacturer must mix and then cool a blend of alcohols, fragrances, and colorants. During this cooling process to -5 °C—known as “glaçage”—only the alcohol remains liquid. As a result, all other components that have not dissolved in this mixture solidify and can be removed through a filter. Free of residues and foreign matter, the mixture emerging from the filter is homogeneous, clear, and of high quality.

Previously, the filtration of fragrance mixtures was carried out in batch mode: a fixed amount of time had to be allocated for cleaning the pipes and filters before processing each fragrance, thereby preventing cross-contamination. Our expertise in HVAC and electrical engineering has enabled us to implement a new process that filters the mixture continuously as it is cooled. This continuous filtration process dedicates one filter and one tank per fragrance, thereby eliminating these “time-consuming” preparation periods. This innovation saves time, reduces costs and resource consumption, and provides flexibility and agility in production line management.