Modular, mobile, and automated solvent extraction and distillation systems, and methods of using the same
US10988704B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2020 |
| Grant date | Apr 27, 2021 |
| Priority date | — |
| Expiry date | Feb 8, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D11/0284
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Some variations provide an automated system for solvent extraction of a feed stock to produce a botanical extract, fats, oils, or other desirable solute, comprising: an extraction reactor; a distillation unit; and a second-stage purge chamber or a second-stage purge process utilizing the extraction reactor itself. The second-stage purge chamber or process receives or holds the solid material along with a heated inert non-condensable gas and/or solvent vapor, to recover residual solvent contained in the solid material. Other variations provide a process comprising: feeding a raw material and a solvent into an extraction reactor; generating dissolved material in rich solvent and extracted solid material; distilling the rich solvent to generate purified product and recovered solvent; conveying the solid material and a heated inert non-condensable gas and/or solvent vapor into a second-stage purge chamber, or holding the solid material in the same vessel, to recover residual solvent; and recovering the purified product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.