Control system for and method of combining materials
US8616760B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2007 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Aug 10, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D11/132
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An apparatus and method for combining multiple materials into a stream. The multiple materials may include both a major material and one or more minor materials. The minor materials are added using inlet tubes. The major and minor materials are added at transient or steady state flow rates, depending upon a command from a control signal. The apparatus and method utilize a control system which does not have flow control valves, flow control feedback loops or a dynamic mix tank. The actual flow rates track the commanded flow rates, but deviate by an error. The claimed arrangement provides a time-based error believed to be unobtainable in the prior art.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.