FREMGANGSMADE TIL FREMSTILLING AF RACELLULOSE EFTER SULFITMETODEN

Chemical cellulose is produced by treatment in a digester. In the first step, wood in the form of chips is treated for a period of about from 15 to 90 minutes with a cooking acid of a calculated amount of below 5% by weight and at least 2.5% by weight of SO2 and a mole ratio of SO2 to MgO or CaO of...

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1. Verfasser:	SCHADLER R
Format:	Patent
Sprache:	dan
Schlagworte:	APPARATUS THEREFOR PAPER-MAKING PRODUCTION OF CELLULOSE PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS REGENERATION OF PULPING LIQUORS TEXTILES
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creator	SCHADLER R
description	Chemical cellulose is produced by treatment in a digester. In the first step, wood in the form of chips is treated for a period of about from 15 to 90 minutes with a cooking acid of a calculated amount of below 5% by weight and at least 2.5% by weight of SO2 and a mole ratio of SO2 to MgO or CaO of from about 2 : 1 to 3.5 : 1 at a temperature of from about 45 to 90 DEG C. The liquid SO2 is fed into the digester until the total SO2 content of the cooking acid is from about 6 to 10 percent by weight, and completing the digestion in a second step to obtain a pulp by cooking at a temperature of above 110 DEG C., and working up the pulp in a manner known per se to obtain chemical cellulose.
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The liquid SO2 is fed into the digester until the total SO2 content of the cooking acid is from about 6 to 10 percent by weight, and completing the digestion in a second step to obtain a pulp by cooking at a temperature of above 110 DEG C., and working up the pulp in a manner known per se to obtain chemical cellulose.</description><edition>2</edition><language>dan</language><subject>APPARATUS THEREFOR ; PAPER-MAKING ; PRODUCTION OF CELLULOSE ; PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS ; REGENERATION OF PULPING LIQUORS ; TEXTILES</subject><creationdate>1976</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=19760325&DB=EPODOC&CC=DK&NR=425975A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19760325&DB=EPODOC&CC=DK&NR=425975A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SCHADLER R</creatorcontrib><title>FREMGANGSMADE TIL FREMSTILLING AF RACELLULOSE EFTER SULFITMETODEN</title><description>Chemical cellulose is produced by treatment in a digester. 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The liquid SO2 is fed into the digester until the total SO2 content of the cooking acid is from about 6 to 10 percent by weight, and completing the digestion in a second step to obtain a pulp by cooking at a temperature of above 110 DEG C., and working up the pulp in a manner known per se to obtain chemical cellulose.</description><subject>APPARATUS THEREFOR</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>1976</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZHB0C3L1dXf0cw_2dXRxVQjx9FEAiQQDGT6efu4Kjm4KQY7Orj4-oT7-wa4Krm4hrkEKwaE-bp4hvq4h_i6ufjwMrGmJOcWpvFCam0HOzTXE2UM3tSA_PrW4IDE5NS-1JN7F28TI1NLc1NGYoAIA-poqAw</recordid><startdate>19760325</startdate><enddate>19760325</enddate><creator>SCHADLER R</creator><scope>EVB</scope></search><sort><creationdate>19760325</creationdate><title>FREMGANGSMADE TIL FREMSTILLING AF RACELLULOSE EFTER SULFITMETODEN</title><author>SCHADLER R</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_DK425975A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>dan</language><creationdate>1976</creationdate><topic>APPARATUS THEREFOR</topic><topic>PAPER-MAKING</topic><topic>PRODUCTION OF CELLULOSE</topic><topic>PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS</topic><topic>REGENERATION OF PULPING LIQUORS</topic><topic>TEXTILES</topic><toplevel>online_resources</toplevel><creatorcontrib>SCHADLER R</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SCHADLER R</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>FREMGANGSMADE TIL FREMSTILLING AF RACELLULOSE EFTER SULFITMETODEN</title><date>1976-03-25</date><risdate>1976</risdate><abstract>Chemical cellulose is produced by treatment in a digester. In the first step, wood in the form of chips is treated for a period of about from 15 to 90 minutes with a cooking acid of a calculated amount of below 5% by weight and at least 2.5% by weight of SO2 and a mole ratio of SO2 to MgO or CaO of from about 2 : 1 to 3.5 : 1 at a temperature of from about 45 to 90 DEG C. The liquid SO2 is fed into the digester until the total SO2 content of the cooking acid is from about 6 to 10 percent by weight, and completing the digestion in a second step to obtain a pulp by cooking at a temperature of above 110 DEG C., and working up the pulp in a manner known per se to obtain chemical cellulose.</abstract><edition>2</edition><oa>free_for_read</oa></addata></record>
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subjects	APPARATUS THEREFOR PAPER-MAKING PRODUCTION OF CELLULOSE PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS REGENERATION OF PULPING LIQUORS TEXTILES
title	FREMGANGSMADE TIL FREMSTILLING AF RACELLULOSE EFTER SULFITMETODEN
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