Concentration of chlor-alkali membrane cell depleted brine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 30, 2001
Grant Date -
N/A
app pub date -
Sep 20, 2000
filing date -
Sep 20, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
This invention relates to methods, systems and installations for concentrating depleted brine produced by the electrolytic decomposition of concentrated brine in chlor-alkali membrane cells and to the efficient use of power, steam and brine. More particularly, this invention relates to the use of depleted brine directly into evaporation systems, which are used to concentrate the brine for reuse in membrane cells or other processes. This invention employs the phenomena that a week unsaturated brine boiling under reduced pressure has a lower boiling point rise (BPR) than a saturated brine boiling at the same or higher pressure. The concentration of depleted brine at a lower boiling point rise improves the operating efficiency of either mechanical vapor recompression and/or steam jet thermocompression. Further, this invention allows for concentrating the depleted brine at temperatures low enough to utilize plastic materials of construction. The use of plastic materials of construction in place of metals in the major components of the installation eliminates or minimizes the metal contamination of the brine being concentrated.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully