Brown stock wash control
US11072890B2 · kind B2 · utility
0Cited by
13References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 26, 2017 |
| Grant date | Jul 27, 2021 |
| Priority date | — |
| Expiry date | Aug 5, 2039 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H21/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Methods of and systems for controlling dosing of drainage aid and optionally defoamer to brown stock of a brown stock washing process are provided. Certain embodiments of the invention provide independent control of drainage aid and/or defoamer to brown stock, which tends to provide improved efficiency in dosing each of the drainage aid and the defoamer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.