Methods and apparatus to control pressure in a supercritical fluid reactor
US6766810B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 15, 2002 |
| Grant date | Jul 27, 2004 |
| Priority date | — |
| Expiry date | Oct 5, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8326
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention pertains to methods and apparatus for controlling the pressure in a supercritical processing system. Active methods for controlling the pressure include anticipating a pressure deviation due to a solute addition to a system, and changing the pressure within the system to compensate for the deviation. In this way, a desired pressure is achieved when the solute is added, without phase separation of the solute from the solvent. Pressure is adjusted by changing the volume of the supercritical processing system. Passive methods include adjusting the pressure of a supercritical system by changing the volume in response to a pressure deviation from a desired pressure. Apparatus for controlling the pressure in a supercritical processing system are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.