Process and an equipment for the recovery of energy and chemicals in a sulphate process
US5211002A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 10, 1992 |
| Grant date | May 18, 1993 |
| Priority date | — |
| Expiry date | Feb 10, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/10
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method and an equipment for the recovery of energy and chemicals in a sulphate process, wherein black liquor is passed into a gasification reactor (3) in which it is gasified at a pressure above the atmospheric pressure in the presence of an amount of oxygen smaller than the stoichiometric amount, whereby inorganic compounds are recovered as liquid-phase compounds useable in the present pulping process, and the energy of the organic compounds of black liquor is bound mainly to the chemical compounds of the gas phase. Gases formed in the gasification, containing sodium compounds, are passed into a particle cooler (4), in which the compounds are brought into solid state. Gases cooled in the particle cooler (4) are purified by a filter (5) and then passed into a gas turbine (7).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.