Removal of contaminants in liquid purification
US4436902A · kind A · utility
24Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1982 |
| Grant date | Mar 13, 1984 |
| Priority date | — |
| Expiry date | Feb 12, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D3/4211
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A liquid containing a contaminant such as water or polymeric solids is purified. Purification of a liquid containing a contaminant is enhanced by the use of second fractionating column in conjunction with a first fractionating column to recover a portion of the liquid to be purified from the kettle product of the first column. Vapor from a second fractionating column is used to control the total energy input to a first fractionating column.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.