Method for cleaning fouled ion exchange resins
US6080696A · kind A · utility
33Cited by
4References
21Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 3, 1998 |
| Grant date | Jun 27, 2000 |
| Priority date | — |
| Expiry date | Aug 3, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J49/60
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Methods are disclosed for the regeneration of fouled ion exchange (IX) resins. In one embodiment, the fouled resin is treated simultaneously with reducing agent and acid. In a preferred embodiment, fouled resin is treated with reducing agent and then with acid. Use of reducing agent prior to the use of acid results in surprisingly unexpected improved cleaning as compared to simultaneous treatment with reducing agent and acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.