Process for recovering the methanol contained in a liquid hydrocarbon feed
US6679975B2 · kind B2 · utility
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9Claims
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Key dates
| Filing date | Jan 7, 2002 |
| Grant date | Jan 20, 2004 |
| Priority date | — |
| Expiry date | Jan 7, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S203/24
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention aims to isolate the azeotropes formed in a distillation column (B1) by methanol, propane and butane. The azeotropes are then liquefied in heat exchanger (E2) and mixed in contactor (M1) with water in order to dissolve the methanol in water. The mixture is then fed into a decantation tank (D2) to separate the aqueous phase from the liquid hydrocarbon phase. Finally, an aqueous phase containing methanol is discharged and the methanol-depleted hydrocarbon phase is recycled to distillation column (B1) as reflux.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.