Method and apparatus for conversion of cellulosic material to ethanol
The present invention provides an apparatus and a method for conversion of cellulosic material, such as chopped straw and corn stover, and household waste, to ethanol and other products. The cellulosic material is subjected to continuous hydrothermal pre-treatment without addition of chemicals, and...
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| creator | GERLACH LENA HOLM CHRISTENSEN BOERGE HOLM |
| description | The present invention provides an apparatus and a method for conversion of cellulosic material, such as chopped straw and corn stover, and household waste, to ethanol and other products. The cellulosic material is subjected to continuous hydrothermal pre-treatment without addition of chemicals, and a liquid and a fibre fraction are produced. The fibre fraction is subjected to enzymatic liquefaction and saccharification. The method of the present invention comprises: performing the hydrothermal pre-treatment by subjecting the cellulosic material to at least one soaking operation, and conveying the cellulosic material through at least one pressurised reactor, and subjecting the cellulosic material to at least one pressing operation, creating a fibre fraction and a liquid fraction; selecting the temperature and residence time for the hydrothermal pretreatment, so that the fibrous structure of the feedstock is maintained and at least 80% of the lignin is maintained in the fibre fraction. |
| format | Patent |
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The cellulosic material is subjected to continuous hydrothermal pre-treatment without addition of chemicals, and a liquid and a fibre fraction are produced. The fibre fraction is subjected to enzymatic liquefaction and saccharification. The method of the present invention comprises: performing the hydrothermal pre-treatment by subjecting the cellulosic material to at least one soaking operation, and conveying the cellulosic material through at least one pressurised reactor, and subjecting the cellulosic material to at least one pressing operation, creating a fibre fraction and a liquid fraction; selecting the temperature and residence time for the hydrothermal pretreatment, so that the fibrous structure of the feedstock is maintained and at least 80% of the lignin is maintained in the fibre fraction.</description><language>eng</language><subject>APPARATUS SPECIALLY ADAPTED THEREFOR ; APPARATUS THEREFOR ; CHEMISTRY ; COMPOSITIONS BASED THEREON ; DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS ; FODDER ; FOODS OR FOODSTUFFS ; HUMAN NECESSITIES ; METALLURGY ; ORGANIC MACROMOLECULAR COMPOUNDS ; PAPER-MAKING ; PRODUCTION OF CELLULOSE ; PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS ; PRODUCTION OF SUCROSE ; REGENERATION OF PULPING LIQUORS ; SUGAR INDUSTRY ; TEXTILES ; THEIR PREPARATION OR CHEMICAL WORKING-UP ; THEIR TREATMENT, NOT COVERED BY OTHER CLASSES</subject><creationdate>2012</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=20120607&DB=EPODOC&CC=US&NR=2012138246A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76516</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20120607&DB=EPODOC&CC=US&NR=2012138246A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>GERLACH LENA HOLM</creatorcontrib><creatorcontrib>CHRISTENSEN BOERGE HOLM</creatorcontrib><title>Method and apparatus for conversion of cellulosic material to ethanol</title><description>The present invention provides an apparatus and a method for conversion of cellulosic material, such as chopped straw and corn stover, and household waste, to ethanol and other products. 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| subjects | APPARATUS SPECIALLY ADAPTED THEREFOR APPARATUS THEREFOR CHEMISTRY COMPOSITIONS BASED THEREON DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS FODDER FOODS OR FOODSTUFFS HUMAN NECESSITIES METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PAPER-MAKING PRODUCTION OF CELLULOSE PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS PRODUCTION OF SUCROSE REGENERATION OF PULPING LIQUORS SUGAR INDUSTRY TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR TREATMENT, NOT COVERED BY OTHER CLASSES |
| title | Method and apparatus for conversion of cellulosic material to ethanol |
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