Method for in-line quantitative analysis of a stream in a production plant for the synthesis of urea
US10209191B2 · kind B2 · utility
2Cited by
2References
11Claims
0Family size
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Inventor
Key dates
| Filing date | Jun 2, 2015 |
| Grant date | Feb 19, 2019 |
| Priority date | — |
| Expiry date | Jun 2, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/141
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention discloses the use of Raman spectroscopy to analyze one or more process streams (5) of a urea synthesis production plant, where urea is synthesised from ammonia and carbon dioxide at high pressure (100-300 bar) and high temperature (50-250° C.). The radiation generated by the Raman scattering is analyzed to determine the concentration of components such as urea, ammonia and carbon dioxide in the process streams (5). A logic system implemented in a plant control unit (1) generates signals to target plant actuators to optimize the operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.