Solvent degreasing in metal industry

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• Description of the process

• Solvent degreasing flowsheet

Literatur: BAT Surface Treatment of Metals & Plastics, 2006

• Typical parameters of the process

Process	Temperature [°C]	Heat transfer medium	Residence time	Chemicals	Concentration	Details	Literature
Cold cleaning				Chlorinated hydrocarbons (CHC), alcohols, terpenes, ketones, mineral spirits or hydrocarbons			BAT for the surface treatment of metals and plastics, August 2006
Vapour cleaning				Chlorinated hydrocarbones (CHC), hydrcarbones		vapourized solvent
Degreasing in emulsion	60-90			Aqueous solution with solvent (paraffin oil, benzole) and surface active- substance that lowers surface tension (triethanolaminoleate)		spray degreasing or use in washing drum	Oberflächenbehandlung von Aluminium; T.W. Jelinek; Eugen G. Leuze Verlag, D-88348, 1997

• Solvent degreasing

Literature: BAT for the Surface Treatment of Metals & Plastics, 2006

• Energy losses from the surface area of heated process solutions

LITERATURE: BAT for the Surface Treatment of Metals and Plastics, May 2005

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