Liquid level control in gas-liquid mixing operations
US5004571A · kind A · utility
12Cited by
6References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1990 |
| Grant date | Apr 2, 1991 |
| Priority date | — |
| Expiry date | Mar 30, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F27/1144
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A gas-liquid mixing vessel utilizes an axial flow, down-pumping impeller in a draft tube to create vortex development so as to draw gas from the overhead in a body of recirculating liquid. A surge tank is used to accommodate volume changes in the vessel, and a liquid level control feature, in which the gas phase pressures in the mixing vessel and the surge tank are adjusted, is used to maintain the liquid level in the mixing vessel at a desired level for proper vortex development.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.