Process FOR oxidation of concentrated black liquor
US6168685A · kind A · utility
1Cited by
4References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 14, 1994 |
| Grant date | Jan 2, 2001 |
| Priority date | — |
| Expiry date | Oct 14, 2014 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21C11/04
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Concentrated black liquor formed in a kraft pulp mill process is treated to effect exothermal oxidation of black liquor solids, so as to heat the concentrated black liquor and consume a proportion of the black liquor solids. Such procedure eliminates the need to use steam to preheat black liquor and decreases the overall heating value of the concentrated black liquor, allowing an increased black liquor recovery boiler capacity to be achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.