Real-time online determination of caustic in process scrubbers using near infrared spectroscopy and chemometrics
US9636629B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | May 27, 2015 |
| Grant date | May 2, 2017 |
| Priority date | — |
| Expiry date | May 27, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/0324
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention is to provide processes, apparatuses, and systems for monitoring and/or controlling caustic concentrations in caustic scrubbers. In various aspects, the processes, apparatuses, and systems comprise a real-time online method for measuring the concentration of caustic in process scrubbers wherein a probe is coupled to a spectrometer; collecting absorption data with wavelength range from about 1000 to about 2000 nm. In a further aspect, this technique tracks the use and recharge of caustic in process scrubbers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.