Petrochemical additives

Good lubrication is necessary for a long life; oil additives reduce the viscosity of the lubricants and so reduce wear and fuel consumption.

Clarifying decanters and clarifying self-cleaning disc stack separators are used for the production of petrochemical additives in an area that can almost be described as traditional: after a precipitation reaction. This reaction is used to remove impurities from the carrier liquid, usually an organic solvent. The previously dissolved and unwanted components of the petrochemical additive can then be removed by centrifugal force.

Depending on the pre-concentration, the separation process either uses decanters or separators or, frequently, uses a 2-stage process with decanters and separators. In general: if the solution has a high solid content, a decanter is ideal; these machines are more solids oriented than separators. If the valuable phase, which is discharged after the first separation stage, still contains unwanted suspended solids, the user can install a polishing separator which removes extremely fine particles from the decanter overflow. The clarified liquid phase, with the dissolved additives, is treated in further processes.