| 摘要 |
The invention refers to a method and an arrangement for cleaning of porous materials, in particular textiles, in liquid carbon dioxide which by rapid, intermittent pressure drops is brought into boiling. Various ways of lowering and then again icreasing the pressure in the chamber in which the cleaning takes place are described. The arrangement for carrying out the method comprises a pressure chamber (1) in which the goods (2) to be washed is treated, an adjacent container (13, 14) for the control of the carbon dioxide pressure in the pressure chamber (1), suitably a storage tank (7) for liquid carbon dioxide, a compressor (20) for supplying high-pressure gas into the pressure chamber, when necessary, a pump (10) for the transport of liquid carbon dioxide and the required connecting conduits between the volume vessels mentioned and, stop valves in these conduits.
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