Method of reducing scaling of heat transfer surfaces in an evaporation plant of a sulphate cellulose mill
US5647955A · kind A · utility
2Cited by
2References
5Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 13, 1995 |
| Grant date | Jul 15, 1997 |
| Priority date | — |
| Expiry date | Oct 13, 2015 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21C11/106
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Method of reducing scaling of heat transfer surfaces in an evaporation plant of a sulphate cellulose mill when sulphate cellulose is manufactured. In the method, ash to be fed into black liquor is mixed thereto after soap separation when the dry solids content of the black liquor is so low that sodium sulphate and other soluble salts contained in the ash dissolve in the black liquor completely.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.