System and process for pulping wood
US10392748B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 11, 2014 |
| Grant date | Aug 27, 2019 |
| Priority date | — |
| Expiry date | Dec 2, 2034 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21C11/106
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Wood pulping process including pulping wood to produce a pulping effluent or liquor. Pre-concentrating the liquor in a pre-concentration unit produces concentrated liquor, a contaminated condensate and a non-contaminated condensate. Directing the concentrated liquor to a multi-effect train of forced circulation solids concentrators that further concentrating the concentrated liquor to form a highly concentrated liquor. Directing the contaminated condensate produced by the pre-concentration unit to a steam stripper and stripping gases therefrom and in the process producing a contaminated vapor stream. Utilizing the contaminated vapor stream and its thermal energy to power the forced circulation solids concentrators of the multi-effect train.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.