Condenser cold trap unit with separate fraction collection feature
US6286321A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 3, 2000 |
| Grant date | Sep 11, 2001 |
| Priority date | — |
| Expiry date | Jan 3, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D8/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A condenser cold trap unit for recovering as separate primary and secondary condensate fractions solvents contained in an effluent drawn from products being dried in a vacuum chamber includes inner and outer shell vessels, the inner shell vessel be disposed coaxially with the outer shell vessel inside said outer shell vessel with a space being present in the outer shell vessel under the bottom of the inner shell vessel and in a course surrounding the exterior of the inner shell vessel. A cover closes off the open tops of the two shell vessels and the interior space of the outer shell vessel is sealed from communication with outside atmosphere, and the interior space of the inner shell vessel is sealed from any communication with the interior space of the outer shell vessel. A common refrigeration coil encircles the exterior of the inner shell vessel and extends down therefrom to effect solvents condensing temperature levels cooling in both shell vessels. Fittings on the cover allows for connection of the outer vessel condensing chamber with outlet from the drying chamber and for passing effluent subjected to primary solvent fraction condensing in the outer vessel chamber to the inl…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.