DE2810878
A process for recovering caustic alkali from spent alkali liquor, in which a spent alkali liquor and iron oxide are roasted to obtain a product containing alkali ferrate and the product of roasting is hydrolyzed at a temperature over 110 DEG C. and under pressurized conditions where liquid phase is...
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| creator | IMAGIRE, YOSHIYUKI, TOKIO/TOKYO, JP KURIHARA, TOSHIAKI, IBARAKI, JP KINOSHITA, YOSHIAKI, HINO, TOKIO/TOKYO, JP |
| description | A process for recovering caustic alkali from spent alkali liquor, in which a spent alkali liquor and iron oxide are roasted to obtain a product containing alkali ferrate and the product of roasting is hydrolyzed at a temperature over 110 DEG C. and under pressurized conditions where liquid phase is retained, thereby recovering caustic alkali in the form of an aqueous solution of a concentration higher than approximately 15 wt% containing dissolved iron in an extremely small concentration. |
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CHEMISTRY ; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F ; COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM ; INORGANIC CHEMISTRY ; METALLURGY ; PAPER-MAKING ; PRODUCTION OF CELLULOSE ; PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS ; REGENERATION OF PULPING LIQUORS ; TEXTILES</subject><creationdate>1988</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19880623&DB=EPODOC&CC=DE&NR=2810878C2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19880623&DB=EPODOC&CC=DE&NR=2810878C2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>IMAGIRE, YOSHIYUKI, TOKIO/TOKYO, JP</creatorcontrib><creatorcontrib>KURIHARA, TOSHIAKI, IBARAKI, JP</creatorcontrib><creatorcontrib>KINOSHITA, YOSHIAKI, HINO, TOKIO/TOKYO, JP</creatorcontrib><title>DE2810878</title><description>A process for recovering caustic alkali from spent alkali liquor, in which a spent alkali liquor and iron oxide are roasted to obtain a product containing alkali ferrate and the product of roasting is hydrolyzed at a temperature over 110 DEG C. and under pressurized conditions where liquid phase is retained, thereby recovering caustic alkali in the form of an aqueous solution of a concentration higher than approximately 15 wt% containing dissolved iron in an extremely small concentration.</description><subject>APPARATUS THEREFOR</subject><subject>CHEMISTRY</subject><subject>COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F</subject><subject>COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM</subject><subject>INORGANIC CHEMISTRY</subject><subject>METALLURGY</subject><subject>PAPER-MAKING</subject><subject>PRODUCTION OF CELLULOSE</subject><subject>PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS</subject><subject>REGENERATION OF PULPING LIQUORS</subject><subject>TEXTILES</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1988</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZOB0cTWyMDSwMLfgYWBNS8wpTuWF0twMCm6uIc4euqkF-fGpxQWJyal5qSXxcPXORsZEKAEA0DAahQ</recordid><startdate>19880623</startdate><enddate>19880623</enddate><creator>IMAGIRE, YOSHIYUKI, TOKIO/TOKYO, JP</creator><creator>KURIHARA, TOSHIAKI, IBARAKI, JP</creator><creator>KINOSHITA, YOSHIAKI, HINO, TOKIO/TOKYO, JP</creator><scope>EVB</scope></search><sort><creationdate>19880623</creationdate><title>DE2810878</title><author>IMAGIRE, YOSHIYUKI, TOKIO/TOKYO, JP ; 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| language | eng |
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| subjects | APPARATUS THEREFOR CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM INORGANIC CHEMISTRY METALLURGY PAPER-MAKING PRODUCTION OF CELLULOSE PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS REGENERATION OF PULPING LIQUORS TEXTILES |
| title | DE2810878 |
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