Process for the separation of mixtures of substances
Extraction and cleaning processes
Carbonated cleaning solution
Cleaning process using phase shifting of dense phase gases
Method and apparatus for dry cleaning as well as method and device for recovery of solvent therein Patent #: 5123176
ApplicationNo. 912932 filed on 07/13/1992
US Classes:68/5C, In chamber34/72, With means to treat gas or vapor68/18C, Using condenser68/18F, Using filter68/18RWith solvent recovery
ExaminersPrimary: Coe, Philip R.
Attorney, Agent or Firm
Foreign Patent References
International ClassesD06F 043/02
AbstractA dry cleaning system particularly suited for employing supercritical CO2 as the cleaning fluid consisting of a sealable cleaning vessel containing a rotatable drum adapted for holding soiled substrate, a cleaning fluid storage vessel, and a gas vaporizer vessel for recycling used cleaning fluid is provided. The drum is magnetically coupled to a motor so that it an be rotated during the cleaning process. The system is adapted for automation which permits increased energy efficiency as the heating and cooling effect associated with CO2 gas condensation and expansion can be channeled to heat and cool various parts of the system.