Apparatus and process for using a nitroalkane as an entrainer for azeotropic removal of water from aqueous acid solution
US9192877B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Dec 7, 2011 |
| Grant date | Nov 24, 2015 |
| Priority date | — |
| Expiry date | Sep 8, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C201/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed are a process and an apparatus for concentrating an organic acid by using a nitroalkane as an entrainer for the azeotropic removal of water from an aqueous organic acid solution. The nitroalkane may be the same as a nitroalkane that is the product of a high pressure nitration process that produces nitroalkanes and aqueous organic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.