A condensation vapor degreaser for cleaning soiled parts includes two separate paths for connecting a solvent chamber to a condenser. A primary path connects the solvent chamber directly to the condenser. A secondary path extends through a cleaning chamber. The primary path is opened and the secondary path is closed to permit the parts to be inserted or removed from the cleaning chamber while generating solvent vapors in the solvent chamber.
5690751 - Vapor phase cleaning - Owned by The Dow Chemical Company (Midland, MI) EMO Oberflachentechnik GmbH (Bretten-Golshausen,DE)
In a process for cleaning one or more articles in the vapor phase of an organic solvent the solvent vapor is fed into a cleaning chamber (1) wherein an absolute pressure of 200 mbar or less is maintained and the cleaning is conducted at a temperature at or above the flash point of the organic solvent. A preferred apparatus for conducting the cleaning process contains a cleaning chamber (1), two storage tanks (2 and 3), an evaporator (4), a heating device (5) and a condenser (6). These devices are connected by means of a conduit system which is equipped with a vacuum pump (7), two pumps (8 and 9) and valves (12, 13, 14, 15, 16, 17, 18, 19, 20, 21 and 22). Inlet air (11) can be fed into the cleaning chamber (1). Waste gas (10) can be removed from the apparatus by means of the vacuum pump (7).
The present invention relates to compositions and methods of removal of contaminants from textiles and related fabrics and garments utilizing compositions which pose no significant risk to groundwater and which are substantially biodegradable. Compositions according to the present invention are substantially non-toxic, substantially bio-degradable liquids at room temperature or higher and are effective in removing substantial quantities of contaminants from fabrics, especially including garments. The present compositions contain at least one dibasic ester, an alcohol, water and at least one surfactant.
