Method for adiabatic cooling type crystallization of organic compound and apparatus therefor
US8163970B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2006 |
| Grant date | Apr 24, 2012 |
| Priority date | — |
| Expiry date | Mar 13, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C7/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method including carrying out adiabatic cooling and evaporation operation of a coolant in a crystallizer (20) for a mixture solution of a target organic compound containing the coolant; taking out crystal slurry produced by the operation from the crystallizer (20); pressurizing evaporated vapor to a pressure higher than the operation pressure in the crystallizer (20) by a compressor (30) and then introducing the vapor to an absorption condenser (10); cooling for condensation the mixture solution of organic compound and the evaporated vapor that has been pressurized while allowing them to contact each other in the absorption condenser (10); introducing the crystal slurry taken out of the crystallizer (20) to a purification means (70) for purification of the crystal; and introducing a clarified liquid in the purification means (70) to at least one of the crystallizer (20) and the absorption condenser (10).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.