METHOD AND APPARATUS FOR CONCENTRATING BLACK LIQUOR
A METHOD AND APPARATUS FOR CONCENTRATING BLACK LIQUOR A method and apparatus are disclosed for concentrating an alkaline waste liquor containing sulfur compounds, the so-called black liquor, which is discharged from a step of Kraft-cooking wood fibers, in order to recover the cooking chemicals from...
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| Main Authors | , |
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| Format | Patent |
| Language | English French |
| Published |
10.04.1990
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| Edition | 4 |
| Subjects | |
| Online Access | Get full text |
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| Abstract | A METHOD AND APPARATUS FOR CONCENTRATING BLACK LIQUOR A method and apparatus are disclosed for concentrating an alkaline waste liquor containing sulfur compounds, the so-called black liquor, which is discharged from a step of Kraft-cooking wood fibers, in order to recover the cooking chemicals from said waste liquor, characterized in that CO2 gas and/or a gas containing CO2 gas is added to said waste liquor as a boiling-point-lowering agent, viscositylowering agent and solidification promoter, after a step of oxidizing said waste liquor and in or prior to one or more stages during the step of concentrating said waste liquor. |
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| AbstractList | A METHOD AND APPARATUS FOR CONCENTRATING BLACK LIQUOR A method and apparatus are disclosed for concentrating an alkaline waste liquor containing sulfur compounds, the so-called black liquor, which is discharged from a step of Kraft-cooking wood fibers, in order to recover the cooking chemicals from said waste liquor, characterized in that CO2 gas and/or a gas containing CO2 gas is added to said waste liquor as a boiling-point-lowering agent, viscositylowering agent and solidification promoter, after a step of oxidizing said waste liquor and in or prior to one or more stages during the step of concentrating said waste liquor. |
| Author | SHIMOKURA, AKIRA YAGUCHI, TOKIYA |
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| DocumentTitleAlternate | METHODE ET DISPOSITIF DE CONCENTRATION DE LA LIQUEUR NOIRE |
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| Notes | Application Number: CA19850491196 |
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| Snippet | A METHOD AND APPARATUS FOR CONCENTRATING BLACK LIQUOR A method and apparatus are disclosed for concentrating an alkaline waste liquor containing sulfur... |
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| SubjectTerms | APPARATUS THEREFOR PAPER-MAKING PRODUCTION OF CELLULOSE PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS REGENERATION OF PULPING LIQUORS TEXTILES |
| Title | METHOD AND APPARATUS FOR CONCENTRATING BLACK LIQUOR |
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