Method of inhibiting scale formation and deposition in desalination systems
US9133046B2 · kind B2 · utility
3Cited by
36References
15Claims
0Family size
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Key dates
| Filing date | Jun 30, 2011 |
| Grant date | Sep 15, 2015 |
| Priority date | — |
| Expiry date | Mar 27, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A20/131
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
This invention relates to an improved method of inhibiting corrosion and calcium sulfate and calcium carbonate scaling in thermal and membrane desalination processes. The method includes adding a composition having an acrylic acid 2-acrylamido-2-methylpropyl sulfonic acid copolymer, combined with a synergistically effective amount of oligomeric phosphinosuccinic acid to seawater or recirculation brine in a desalting process to produce water for drinking and industrial applications. The method also includes adding a composition including mono, bis, and oligomeric phosphinosuccinic acid adducts to the desalting process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.