Method for preventing clogging in a strainer construction for a continuous digester
US8449717B2 · kind B2 · utility
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2References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 12, 2009 |
| Grant date | May 28, 2013 |
| Priority date | — |
| Expiry date | Mar 8, 2030 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21C3/24
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The method is for influencing the flow from a strainer construction in a continuous digester. In order to avoid clogging of the withdrawal compartment in the strainer construction, an additive that counteracts precipitation processes is added directly to the withdrawal compartment while the cooking fluid is withdrawn from the withdrawal compartment. The addition of chemicals can take place at the same time as the withdrawn cooking fluid is withdrawn from the digester and the strainer construction, or while the withdrawn cooking fluid is fully or partially re-circulated back to the withdrawal compartment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.