Monitoring and control system for selective regeneration of alkanolamine from cation ion exchange resin with sodium hydroxide
US5368818A · kind A · utility
12Cited by
12References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1993 |
| Grant date | Nov 29, 1994 |
| Priority date | — |
| Expiry date | Aug 26, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J49/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A cation exchange resin is regenerated to remove alkanolamine and alkali metal cations from the resin by eluting the resin with alkali metal hydroxide to selectively displace alkanolamine from the resin, followed by elution of the resin with a mineral acid to displace alkali metal cations and any remaining alkanolamine from the resin. During this process, the resin is monitored by measuring and recording the conductance of the effluent from the resin and such recorded conductance is used to control the regenerant streams to provide more efficient regeneration of the resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.