Controlling moisture content of vapor in calcination or oxidation zones
US6442492B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2000 |
| Grant date | Aug 27, 2002 |
| Priority date | — |
| Expiry date | Dec 6, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N25/56
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A process and apparatus for controlling the amount of water in the vapor of multiple zones of a calcination or oxidation operation have been developed. The process begins with calibration of a vessel housing a capacitance probe. The level of water in a vessel housing the capacitance probe is adjusted so as to immerse from about 5 to about 15 percent of the probe and measuring and recording an initial capacitance, CI. A measured amount of vapor is passed through a condenser, the condensed water is conducted to the vessel and a final capacitance, CF, is measured and recorded. The change in capacitance is calculated, &Dgr;C=(CF−CI), and the difference, &Dgr;C, is used along with the calibration to determine the amount of water condensed. With the amount of water condensed and the measured amount of vapor passed through the vessel, the amount of water in the vapor may be readily calculated. An operating parameter of the calcination or oxidation operation is adjusted to maintain the moisture content in the zones within a predetermined range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.