Modelling of a distillation column with operating state changes
US11698225B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2018 |
| Grant date | Jul 11, 2023 |
| Priority date | — |
| Expiry date | May 12, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2111/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method is provided for determining a state of a distillation column having multiple column stages for separating a feed fluid stream into individual fluid components. The state is determined by means of a model in a manner dependent on pressure differences prevailing between adjacent column stages. In the model, both gaseous and liquid flows between adjacent column stages are brought about by the pressure differences prevailing between adjacent column stages. A substance quantity flow characterizing gaseous flow between two column stages is given by {dot over (N)}V·RV=CV·ΔpV. A substance quantity flow characterizing liquid flow between two column stages is given by {dot over (N)}L·RL=CL·ΔpL. ΔpV,L is a total pressure difference between two adjacent column stages. RV,L is a coefficient of resistance between two adjacent column stages and CV,L is a conductance value of flow between two adjacent column stages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.